Page information display method and device and storage medium storing program for displaying page information6765559
Abstract
A page information display method for displaying electronic information includes a page turning operation detecting step of outputting a page turning operation detecting signal when a dragging is made on an operation unit in parallel or unparallel to a predefined page turning direction at a current page read from a storage unit that is to be displayed at present, a next display page setting step of setting a preceding page or a succeeding page immediately before or after a current page depending on a direction of a dragging operation to a next display page to be displayed next, when a page turning operation detecting signal is detected in the page turning operation detecting step, and a page turning process step of displaying the next display page set in the next display page setting step in place of the current page on a display unit.
Claims
What is claimed is:
1. A page information display method for displaying the electronic information, employing an information access device having a storage unit for storing the electronic information having plural pages of information in a unit of page of predetermined size, a display unit for displaying the electronic information stored in said storage unit in said unit of page, and an operation unit for inputting an operation to gain access to said page information, said operation unit being provided in the substantially same area as said display unit, comprising:
a page turning operation detecting step of outputting a page turning operation detecting signal having the number of holding pages and a page turning direction defined, when a page turning operation for turning one or more pages is performed in said operation unit;
a next display page setting step of setting a preceding page or a succeeding page by said number of holding pages before or after the current page depending on said page turning direction to a next display page to be displayed at the next time, when the page turning operation is completed in said page turning operation detecting step and the page turning operation detecting signal is output; and
a page turning process step of displaying the next display page set in said next display page setting step in place of said current page on said display unit,
said page turning process step further comprising:
a next display page reading substep of reading said next display page from said storage unit, when said next display page is set;
a turning state display data creating substep of transforming the current page data making up the current page that is being displayed on said display unit at every unit display time, as well as creating the turning state display data into which said current page is transformed, when said page turning operation detecting signal is output; and
a turning state display data overwriting step of overwriting the turning state display data created in said turning state display data creating substep on the next display data read in said next display page reading substep at every unit display time until said turning state display data is exhausted.
2. The page information display method according to claim 1, wherein turning state display data creating step further comprises an overwriting display control substep of deleting an area on the start point side in the page turning direction at every said unit time.
3. The page information display method according to claim 1, wherein said turning state display data creating step further comprises a slide display control substep of deleting an area on the end point side in the page turning direction at every said unit time as well as shifting the current page data by the amount of said deleted area in the page turning direction.
4. The page information display method according to claim 1, wherein said turning state display data creating step further comprises a compression display control substep of reducing the display length in the page turning direction at every said unit time as well as compressing said current page data to said reduced display length in said page turning direction.
5. The page information display method according to claim 1, wherein said turning state display data creating step further comprises:
a three dimensional space defining substep of defining a virtual space in a normal direction of said display unit;
a current page rotating and transforming substep of rotating and transforming said current page within said virtual space around the end point side in said page turning direction; and
a three dimensional display control sub step of drawing a front side and a back side of the current page rotated and virtually transformed in said current page rotating substep in a two dimensional plane as viewed in a normal direction of said display unit as well as setting said drawing data to the turning state display data.
6. The page information display method according to claim 1, wherein said turning state display data creating step further comprises a substep of creating the turning state display data having said current page integrated with a tag portion, when a tag is appended to said current page.
7. The page information display method according to claim 1, wherein said turning state display data creating step further comprises a substep of transforming said current page ahead of transforming each of said holding pages, when the number of holding pages detected in said page turning operation detecting step is greater than one.
8. A page information display device having an electronic information memory for memorizing the electronic information having plural pages of information in a unit of page of predetermined size, a touch panel for displaying the electronic information stored in said electronic information memory in said unit of page, as well as inputting an operation to gain access to said page information, and a display controller for controlling the display of the page information stored in said electronic information memory on the basis of an operation content input into said touch panel,
wherein said display controller comprises:
a page turning operation detecting portion for outputting a page turning operation detecting signal with the number of holding pages and a page turning direction defined, when a page turning operation for turning one or more pages is performed on said touch panel;
a next display page setting portion for setting a preceding page or a succeeding page by said number of holding pages before or after the current page depending on said page turning direction to a next display page to be displayed at the next time, when the page turning operation is completed in said page turning operation detecting portion and the page turning operation detecting signal is output; and
a page turning process portion for displaying the next display page set in said next display page setting portion in place of said current page on said display unit,
wherein said page turning process portion comprises:
a next display page reading function of reading said next display page from said electronic information memory, when said next display page is set;
a turning state display data creating function of transforming the current page data making up the current page that is being displayed on said touch panel at every unit display time as well as creating the turning state display data into which said current page is transformed, when said page turning operation detecting signal is output; and
a turning state display data overwriting function of overwriting the turning state display data created in said turning state display data creating function on the next display page read in said next display page reading function until said turning state display data is exhausted.
9. A storage medium for storing a page information display program for displaying the electronic information, employing an information access device having an electronic information memory for memorizing the electronic information having plural pages of information in a unit of page of predetermined size, a touch panel for displaying the electronic information stored in said electronic information memory in said unit of page, as well as inputting an operation to gain access to said page information, and a display controller for controlling the display of the page information stored in said electronic information memory on the basis of an operation content input into said touch panel,
wherein said page information display program comprises, as the commands for operating said display controller:
a page turning operation detecting command for outputting a page turning operation detecting signal with the number of holding pages and a page turning direction defined, when a page turning operation for turning one or more pages is performed on said touch panel;
a next display page setting command for setting a preceding page or a succeeding page by said number of holding pages before or after the current page depending on said page turning direction to a next display page to be displayed at the next time, when the page turning operation is completed in accordance with said page turning operation detecting command and the page turning operation detecting signal is output; and
a page turning process command for displaying the next display page set in accordance with said next display page setting command in place of said current page on said display unit,
said page turning process command further comprising:
a next display page reading command for reading said next display page from said electronic information memory, when said next display page is set;
a turning state display data creating command for transforming the current page data making up the current page that is being displayed on said display unit at every unit display time as well as creating the turning state display data into which said current page is transformed, when said page turning operation detecting signal is output; and
a turning state display data overwriting command for overwriting the turning state display data created in accordance with said turning state display data creating command on the next display page read in accordance with said next display page reading command at every unit display time until said turning state display data is exhausted.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a page information display method and device, and in particular to a page information display method and device for displaying electronic information in a unit of page of predetermined size.
2. Description of the Prior Art
Conventionally, the information required for the work, study or life is provided from the origins of information to the reader, using media such as books, or periodical publications, e.g., newspaper or magazines or the like. Also, the administrative or judicial information is provided in publications or documents.
In recent years, the Internet (Inter Network) by a TCP/IP has been well prepared to enable computers for the government, company, college, and individual to be interconnected directly or via a telephone network. With the development of providing the information via the Internet, a variety of information is created as an ML page (e.g., HTML page or XML page) created on the basis of a makeup language, which allows this page (typically referred to as a home page) to be accessed by using a computer. To provide the ML page, a large amount of documents are created in a PDF format, and can be downloaded from respective home pages. Just as a patent gazette is provided in CD-ROM, the important information may be publicized or circulated in the computer readable medium other than the Internet.
The information provided in a format accessible using a computer may include information contents from a wide variety of information sources covering data sheets of products manufactured by the company, the information of new products, documents created by the administration, pieces of legislation in making, the Supreme Court gists, research results of the college laboratory, detailed information of lodgings in a certain region, news, weather forecasts, for example. These maybe duplicately provided in other paper media such as newspaper columns, magazines, or catalogues, but simply provided through the Internet or in the computer readable medium. Most of the past information may be often difficult to obtain substantially in paper media.
As the information infrastructures such as the Internet are prepared throughout the world in the future, more informatization will penetrate into the society increasingly. Thereby, it is apprehended that there occurs a personal difference in the amount or quality of necessary information between the user familiar with the computer and the user unfamiliar with the computer.
Means for operating the computer may be a graphical user interface (GUI, hereinafter referred to as a desktop metaphor) useful in most cases, which is metaphoric to the working environment of desk in the actual world. Through the user interface in the desktop metaphor, the working environment of desk is comically drawn to allow a file structure specific to the computer which is nonobjective and uneasy to understand to correspond with something present in the working environment of desk such as a file or folder. Thus, the computer beginners can operate the computer intuitively. For example, to delete a file, the file indicated by an icon which is metaphoric to paper is dragged and dropped into a garbage box.
However, through use of the user interface of desktop metaphor, many people in the world may think that the simple operation of gaining access to the electronic information in the computer is difficult. That is, through the user interface of desktop metaphor, it is required to make access to the electronic information by instructing or operating indirectly a virtual device such as buttons drawn on the display of computer, a pop-up menu, or a slide bar, using an input device such as a mouse or keyboard peculiar to the computer.
BRIEF SUMMARY OF THE INVENTION
Object of the Invention
In the conventional examples as described above, there was a drawback that the access of information through the use of a computer was difficult. The operation scheme specific to the computer may take considerable time to master the operation. Thus, everyone can not easily make use of electronic information provided by the computer. Accordingly, there is a personal difference in the quality and amount of information available between the users. If many people feel it difficult to use the computer, the information provider abolishes the paper media for the information necessary to be conveyed and cannot entirely transfer to the electronic information.
For example, it was reported that when a large company introduced a computer system to do all business contacts and settlements of accounts by abolishing the paper media, the preparatory period was set to two years, and one year or more was dedicated to an education period for new staff members to get accustomed to the computer, so that the company fully succeeded in computerization. Some colleges provide computer literacy courses to educate the basic usage of computer. Generally, in the study and training of new staff members in the companies or government offices, the computer operation is educated. They are taught about not only access of the information, but also input and origination of the information. However, for the people who never have used the computer at all, it is a difficult work to simply access the information.
Therefore, it is desirable to provide a user interface which is intuitive and easy to operate, rather than a desktop metaphor. Particularly, an information access device which has a simple appearance and enables the operation intended to access the electronic information is promising.
To cope with such a problem, a prior access device which is an improved desktop metaphor was disclosed in Japanese Patent Laid-Open No. 5-165595. This realizes the appearance of a book on the display unit, and relies on a method of visualizing the electronic information on the display unit by outputting the overlapped pages composed of a plurality of sentences dislocated slightly to the display unit. A heading symbolizing a set of sentences is appended with the content of sentences as a unit of set to improve the desktop metaphor. However, in this conventional example, the amount of information to be displayed increases in proportion to an increase in the number of pages. Therefore, it is often difficult to secure the display area sufficiently. Consequently, there is a problem that the access area is reduced to make the access difficult.
A CRT or a liquid crystal display is becoming higher in resolution year after year. For example, if the resolution of about 150 dpi in A4 size is realized, it is possible to access the whole one face of newspaper in A4 size. That is, if the display has substantially a resolution of facsimile class, the newspaper or magazine is made readable in a size which is smaller than the actual size. In such a high-resolution display, the display of 1200.times.1600 dots can be made in A4 actual size. Therefore, the physical size becomes too small to be useful for the icon in the conventional operating system, giving an impression of something intricate to the user, possibly resulting in a user interface which is rather uneasy to understand.
Therefore, the development of a user interface in the next generation which can be intuitively used by the computer beginners as well is required. Then, it is desired to adopt a high-resolution display without changing the operation. In other words, it is desired to develop the user interface which is easy to master the operation and not dependent on the resolution.
OBJECT OF THE INVENTION
It is an object of the present invention to resolve the inconveniences associated with the conventional example, and to provide a user interface for enabling access to the information which is easily understood by all people, irrespective of the computer experiences.
SUMMARY OF THE INVENTION
Therefore, the present invention adopts a user interface having a metaphor like a book, newspaper or magazine. To realize the metaphor of this book, the electronic information is allowed to access in a unit of page of predetermined size. That is, the electronic information is displayed in a unit of page of predetermined size in an information access area of a display unit. And there is only a single information access area and the page can not be turned physically, unlike books. But a user interface which is metaphoric to the operation of turning over pages enables the information access area to be effectively used. This invention has a new feature in the user interface metaphoric to the operation of turning over pages, as will be detailed later.
Based on the above described analysis, and in order to accomplish the aforementioned object, the present invention provides a page information display method for displaying the electronic information using an information access device comprising a storage unit for storing the electronic information having plural pages of information in a unit of page of predetermined size, a display unit for displaying the electronic information stored in the storage unit in the unit of page, and an operation unit for inputting an operation to gain access to the page information, the operation unit being provided in the substantially same area as the display unit, and the method comprises: a page turning operation detecting step of outputting a page turning operation detecting signal when a dragging is made on the operation unit in parallel or anti-parallel to a predefined page turning direction at a current page read from the storage unit that is to be displayed at present; a next display page setting step of setting a preceding page or a succeeding page immediately before or after the current page depending on a direction of the dragging operation to a next display page to be displayed at the next time, when the page turning operation detecting signal is detected in the page turning operation detecting step; and a page turning process step of displaying the next display page set in the next display page setting step in place of the current page on the display unit.
The operation unit, which is provided in the substantially same area as the display unit, corresponds to a touch panel or a computer display, for example. When a dragging is made in a page turning direction on this operation unit, in other words, a dragging operation to press a mouse button and hold it down while moving the pointer in a page turning direction (or an opposite direction), and release the mouse button is performed, a page turning operation detecting signal is output in the page turning operation detecting step. In the next display page setting step, a preceding page or a succeeding page of the current page is set as a next display page, depending on a direction of dragging operation. If the next display page is set, the next display page is displayed in place of the current page on the display unit in the page turning process step. In this way, when a dragging operation is performed in parallel or anti-parallel to the page turning direction, a page turning process is effected one page by one page in accordance with the direction of that dragging operation. Therefore, it is possible to turn over pages of the electronic information with the same operation as the motion of the user's hand.
BRIEF DESCRIPTION OF THE DRAWINGS
This above-mentioned and other objects, features and advantages of this invention will become more apparent by reference to the following detailed description of the invention taken in conjunction with the accompanying drawings, wherein:
FIG. 1 is a flowchart illustrating one example of a page information display method according to a first embodiment of the present invention;
FIGS. 2A and 2B are block diagrams illustrating examples of page information display devices in the first embodiment as shown in FIG. 1, wherein FIG. 2A is a diagram showing an overall configuration, and FIG. 2B is a diagram showing a detailed configuration of a display controller;
FIG. 3 is an explanatory view illustrating an example of a page turning operation with the configuration as shown in FIGS. 1 and 2;
FIG. 4 is a flowchart showing a configuration of a page holding operation according to the second embodiment of the invention;
FIGS. 5A, 5B, 5C and 5D are explanatory views illustrating examples of displaying the number of holding pages with the configuration as shown in FIG. 4, wherein FIG. 5A is a view illustrating a pressure circle, FIG. 5B is a view illustrating a time circle, FIG. 5C is a view illustrating a pressure/time operation performed in a predetermined region, and FIG. 5D is a view illustrating an example of displaying the pressure circle in accordance with the operation as shown in FIG. 5C;
FIGS. 6A and 6B are explanatory views illustrating operation examples in the second embodiment as shown in FIG. 4, wherein FIG. 6A is a view illustrating a configuration of a page information display device, and FIG. 6B is a view illustrating an example of displaying the pressure circle;
FIGS. 7A, 7B and 7C are explanatory views illustrating one example for displaying a multiloop with the configuration as shown in FIG. 4;
FIGS. 8A, 8B and 8C are explanatory views illustrating examples for displaying a coated circles with the configuration as shown in FIG. 4, wherein FIG. 8A is a view illustrating an example of the coated circle in a solid color, FIG. 8B is a view illustrating an example of the coated circle having transparency, and FIG. 8C is a view illustrating an example of the coated circle having gradation;
FIGS. 9A, 9B, 9C and 9D are explanatory views illustrating other examples for displaying a coated circles with the configuration as shown in FIG. 4, wherein FIG. 9A is a view illustrating one example of the coated circle having a distortion, FIG. 9B is a view showing the reference causing the distortion, FIG. 9C is a view illustrating an example of distortion in the instance of a medium pressure, and FIG. 9D is a view illustrating an example of distortion in the instance of a large pressure;
FIG. 10 is a flowchart illustrating an example of selecting a display format according to a third embodiment of the invention;
FIG. 11 is a block diagram illustrating a configuration of a page information display device in the third embodiment;
FIGS. 12A and 12B are explanatory views illustrating examples of the display format at the time of turning a page with the configuration as shown in FIG. 10, wherein FIG. 12A is a view illustrating one example of the display format of an overwrite type, and FIG. 12B is a view illustrating one example of the display format of a slide type;
FIGS. 13A and 13B are explanatory views illustrating other examples of the display format at the time of turning a page with the configuration as shown in FIG. 10, wherein FIG. 13A is a view illustrating one example of the display format of a compression type, and FIG. 13B is a view illustrating one example of the display format of a 3D type;
FIG. 14 is a flowchart showing a configuration of a page information display method according to one embodiment of the invention;
FIG. 15 is a block diagram illustrating a configuration of a page information display device suitable for practicing each step as shown in FIG. 14;
FIG. 16 is an explanatory view illustrating one example of an initial state of a tag display in this embodiment;
FIG. 17 is an explanatory view illustrating a tag display example at the fourth page with the configuration as shown in FIG. 16;
FIG. 18 is an explanatory view for defining various technical terms for use in a fourth embodiment of the present invention;
FIG. 19 is a flowchart showing the configuration of a semantic display process in which the tag length is changed continuously in the fourth embodiment of the present invention;
FIG. 20 is an explanatory view illustrating an example of a semantic display in the configuration as shown in FIG. 19;
FIGS. 21A and 21B are tables showing examples of the page information display data for use in the fourth embodiment, in which FIG. 21A is a table illustrating an example where the minimum reference length is defined by the number of dots, and FIG. 21B is a table illustrating an example where the minimum reference length is defined by the physical length;
FIG. 22 is a block diagram illustrating a configuration of a page data display device in the fourth embodiment;
FIG. 23 is a flowchart illustrating one example of a process for determining the tag width and the tag length using the data of data structure as shown in FIG. 21;
FIG. 24 is a flowchart illustrating one example of a process for switching between a normal display and a semantic display;
FIG. 25 is a flowchart illustrating an example of a process for displaying a tag again after turning a page;
FIG. 26 is an explanatory view illustrating a display example while turning a page with the configuration as shown;
FIG. 27 is a flowchart illustrating one example of a process for expanding the tag during the semantic display;
FIG. 28 is an explanatory view illustrating a display example with the tags near a pointer expanded in the process for expanding the tag as shown in FIG. 27;
FIGS. 29A and 29B are explanatory views illustrating examples of a page turning display format using a tag, wherein FIG. 29A is a view illustrating one example the display format of tag integral type, and FIG. 29B is a view illustrating one example of the display format of pages integral type;
FIG. 30 is a flowchart illustrating one example of a tag display control with a holding operation in the fourth embodiment;
FIG. 31 is an explanatory view illustrating one example of the tag display control as shown in FIG. 30;
FIG. 32 is an explanatory view illustrating one example of a tag coloring process under the tag display control as shown in FIG. 30;
FIG. 33 is an explanatory view illustrating one example of the tag coloring process in an opposite tag display area to that of FIG. 32;
FIG. 34 is a flowchart illustrating one example of the tag display in a process of turning plural pages collectively;
FIGS. 35A and 35B are explanatory views illustrating a tag display example in the process of turning plural pages collectively as shown in FIG. 34;
FIGS. 36A and 36B are explanatory views for highlighting the tag display in an information access area in the process of turning plural pages collectively as shown in FIG. 34;
FIG. 37 is an explanatory view illustrating a tag display example after completing the process of turning plural pages collectively;
FIGS. 38A. 38B and 38C are explanatory views illustrating examples in which a pressure circle is displayed over a tag, wherein FIG. 38A is a view illustrating an example of a left page tag, FIG. 38B is a view illustrating an example of a right page tag, and FIG. 38C is a view illustrating an example in which the tag coloring and the tag pressure circle are employed at the same time;
FIGS. 39A and 39B are explanatory views illustrating examples in which a holding object page is changed depending on an operation direction upon the tag, wherein FIG. 39A is a view illustrating one example of holding a previous page, and FIG. 39B is a view illustrating one example of holding a succeeding page;
FIG. 40 is a block diagram showing the configuration of this example;
FIG. 41 is a flowchart showing the former part of a page information display process in the configuration as shown in FIG. 40;
FIG. 42 is a flowchart showing the latter part of the page information display process continued from the process of FIG. 41;
FIG. 43 is a flowchart illustrating a process for displaying in enlargement the article information in a first example of this invention;
FIG. 44 is an explanatory view illustrating a continuous enlargement operation by dragging plural articles;
FIGS. 45A and 45B are explanatory views illustrating examples of an article enlargement display with wire frame, wherein FIG. 45A is a view illustrating a display example at the time of an enlargement process, and FIG. 45B is a view illustrating one example of the enlarged article information;
FIGS. 46A, 46B and 46C are explanatory views illustrating examples of a process of embossing and enlarging the article information, wherein FIG. 46A is a view illustrating a state in which an article is shaded for embossing, FIG. 46B is a view illustrating a state in which a selected article is being enlarged, and FIG. 46C is a view illustrating a state after the enlargement process is completed;
FIG. 47 is an explanatory view illustrating one example of a tag display when the article information is enlarged;
FIG. 48 is a diagram illustrating one example of an article information table which lists in correspondence the page information and the article information;
FIG. 49 is a flowchart illustrating a process in a second example of the invention;
FIG. 50 is a diagram illustrating the relation between a pointer event and a page turning in the process as shown in FIG. 49;
FIGS. 51A and 51B are explanatory views illustrating examples of a process for selecting one of the page turning and the continuous display of article information in a locus of dragging, wherein FIG. 51A is a view illustrating the locus on the straight line, and FIG. 51B is a view illustrating the locus having a curve;
FIG. 52 is a flowchart illustrating an example of a prefetch process in a third example of the invention;
FIG. 53 is an explanatory view illustrating one example of turning plural pages collectively;
FIG. 54 is an explanatory view illustrating an example in which the page information of high resolution is memorized;
FIG. 55 is an explanatory view illustrating an example in which the page information and the article information are memorized separately;
FIG. 56 is a block diagram illustrating a configuration of a page information processing unit that converts the ML data in a fourth example of the invention;
FIGS. 57A and 57B are explanatory views illustrating examples of the link structure of an ML page, wherein FIG. 57A is a view illustrating one example of the link structure, and FIG. 57B is a view illustrating an example in which the link structure is transformed into a book structure;
FIG. 58 is an explanatory view illustrating another example of the link structure of the ML page;
FIG. 59 is an explanatory view illustrating a further example of the link structure of the ML page;
FIG. 60 is a block diagram illustrating a configuration of a page information display device for controlling the tag display at the time of streaming in a fifth example of the invention;
FIGS. 61A and 61B are views illustrating examples of controlling the tag display in accordance with the amount of downloaded data in the configuration as shown in FIG. 60, wherein FIG. 61A is a view illustrating an example of displaying the tag for the page which has been completely downloaded, and FIG. 61B is a view illustrating an example of setting the tag for the page being downloaded to the tag length in accordance with the downloaded volume;
FIGS. 62A and 62B are views illustrating examples of controlling the tag display in accordance with the amount of downloaded data in all pages in the configuration as shown in FIG. 60, wherein FIG. 62A is a view illustrating an example of normally displaying the page tag only, and FIG. 62B is a view illustrating an example of normally displaying the page tag by the length of tag in accordance with the volume of one page that has been downloaded;
FIGS. 63A and 63B are explanatory views illustrating examples of handling the history information in a sixth example of the invention, wherein FIG. 63A is a view illustrating one example of the history information in which the commands for limited operations are memorized, and FIG. 63B is a view illustrating one example of the history information in which the commands for all operations are memorized;
FIG. 64 is a flowchart illustrating a page information display control process using the history information;
FIG. 65 is a perspective view illustrating a computer that is employed in this example;
FIG. 66 is an explanatory view illustrating a conventional user interface; and
FIGS. 67A and 67B show other conventional user interfaces, in which FIG. 67A is an explanatory view showing the state of selecting the sheet 1, and FIG. 67B is an explanatory view showing the state of selecting the sheet 2.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
The preferred embodiments of the present invention will be described below with reference to the drawings. A first embodiment involves a process of turning one page, a second embodiment involves a process of turning plural pages collectively, and a third embodiment involves the display format during the page turning process. A fourth embodiment involves associating an operation using a tag with an element in each of the above embodiments. The cases where the page information has plural pages of information, and the page information is downloaded from a server, will be described later by way of example.
First Embodiment
In the first embodiment, the intuitive operation is allowed to facilitate the access to the electronic information, and a page turning process is effected in accordance with an operation on an operation unit such as a touch panel. At this time, a page turning direction is determined depending on an operation direction. FIG. 1 is a flowchart illustrating one example of a page information display method according to the first embodiment of the invention. The page information display method of this embodiment displays the electronic information using an information access device comprising a storage unit (electronic information memory) 4 for storing the electronic information having plural pages of information in a unit of page of predetermined size, a display unit 1 for displaying the electronic information stored in this storage unit in the unit of page, and an operation unit 1C for inputting an operation to gain access to the page information, the operation unit being provided in the substantially same area as the display unit. In an example of using a touch panel as the display unit 1, the display unit 1 and the operation unit 1C are integrated.
Referring to FIG. 1, the page information display method comprises a page turning operation detecting step A1 of outputting a page turning operation detecting signal when a dragging is made on the operation unit in parallel or anti-parallel to a predefined page turning direction at a current page read from the storage unit 4 that is to be displayed at present, a next display page setting step A2 of setting a preceding page or a succeeding page immediately before or after the current page depending on a direction of the dragging operation to a next display page to be displayed at the next time, when the page turning operation detecting signal is detected in the page turning operation detecting step A1, and a page turning process step A3 of displaying the next display page set in the next display page setting step in place of the current page on the display unit 1.
The page turning operation detecting step A1 further comprises a page turning operation judging substep of judging, as the page turning operation, an operation exceeding a minimum operation length in the page turning direction within a predefined allowance region in a direction orthogonal to the page turning direction. The next display page setting step sets a page number that is equal to the page number of the current page incremented or decremented by one, depending on the direction of dragging operation, to the next display page. And the page turning process step A3 performs the page turning process to make the next display page a new current page. That is, by dragging a pointer in the page turning direction on the operation unit 1C, the next page is displayed. In the case where the pointer is dragged in a direction anti-parallel to the page turning direction, the previous page is displayed. The pointer may be a pointing device of the mouse, or a fingertip of the user. In the case where the touch panel 1 is employed to perform the page turning operation, the page turning operation is allowed in a broader area than selecting the area where the tag is displayed.
The page turning process involves deleting the current page from the display unit 1, and displaying the next display page on the display unit 1. To present the state of turning a page to the user more intuitively by effecting this page turning process at stages, the current page may be gradually reduced, and the next display page may be displayed on the display unit at stages (refer to the third embodiment). Then, the page turning operation detecting step A4 may further comprise an operation rate calculating substep of calculating a page turning rate that is a speed of the page turning operation, and the page turning process step A3 may further comprise a display rate setting substep of setting a display rate corresponding to the page turning rate calculated in the operation rate calculating step to change the display from the current page to the next display page. Consequently, the relation between the page turning operation and the page turning process can be informed to the user more clearly.
FIG. 2 is a block diagram illustrating one example of a page information display device in the first embodiment as shown in FIG. 1, wherein FIG. 2A is a diagram showing the overall configuration, and FIG. 2B is a diagram showing the detailed configuration of a display controller. The page information display device of this embodiment has an electronic information memory 4 for memorizing the electronic information having plural pages of information in a unit of page of predetermined size, a touch panel 1 for displaying the electronic information stored in this electronic information memory 4 in the unit of page, as well as inputting an operation to gain access to the page information, and a display controller 3 for controlling the display of the page information stored in the electronic information memory 4 on the basis of an operation content input into this touch panel 1.
And the display controller 3 comprises a page turning operation detecting portion 60 for outputting a page turning operation detecting signal when a dragging is made on the touch panel 1 in parallel or anti-parallel to a predetermined page turning direction 34 at a current page read from the electronic information memory that is to be displayed at present, a next display page setting portion 61 for setting a preceding page or a succeeding page immediately before or after the current page depending on a direction of the dragging operation to a next display page to be displayed at the next time, when the page turning operation detecting signal is output by the page turning operation detecting portion 60, and a page turning process portion 62 for displaying the next display page set in the next display page setting portion 61 in place of the current page on the touch panel. The process of FIG. 1 can be implemented under the control of the display controller 3 having the above portions.
FIG. 3 is an explanatory view illustrating one example of the page turning operation with the configuration as shown in FIGS. 1 and 2. As shown in FIG. 3, the page information having a one-dimensional structure (book structure) is accessed by turning pages sequentially, whereby the user unfamiliar with the computer operation can acquire the necessary information surely.
The process contents of FIGS. 1 and 2 can be realized by a page information display program that is executed under the control of the display controller. In this case, the page information display program has the commands corresponding to the configuration as shown in FIGS. 1 and 2. Specifically, the page information display program comprises, as the commands for operating the display controller 3, a page turning operation detecting command for outputting a page turning operation detecting signal when a dragging is made on the touch panel in parallel or anti-parallel to a predetermined page turning direction at a current page read from the electronic information memory that is to be displayed at present, a next display page setting command for setting a preceding page or a succeeding page immediately before or after the current page depending on a direction of the dragging operation to a next display page to be displayed at the next time, when the page turning operation detecting signal is output, and a page turning process command for displaying the next display page set in accordance with the next display page setting command in place of the current page on the touch panel. If each of the commands is executed by the display controller 3, the configuration as shown in FIG. 2B is realized, so that the process of FIG. 1 is performed. When the page information display device has the function added or changed, a command corresponding to the function to be added or changed may be newly introduced.
This page information display program is stored in a storage medium 17 such as a CD-ROM, read by a disk drive 16 as shown in FIG. 2A, and stored in a hard disk, not shown. The page display program stored in the hard disk is employed by the display controller 3.
One example of judging the page turning operation or not is a judgment with the change and locus of operated coordinates. As shown in FIG. 2A, the xy coordinates are defined on the display unit (operation unit) 1, the amount of movement from an input coordinate (Px, Py) when the fingertip first touches at the operation unit IC to an input coordinate (PX, PY) to which the fingertip is moved within a fixed time is measured. Herein, it is assumed that the amount of movement .vertline.PY-Py.vertline. in the Y axis direction is smaller than an arbitrary value (DY), and the amount of movement .vertline.PX-Px.vertline. in the X axis direction is larger than an arbitrary value (DX). That is, the operation in the page turning direction is beyond the arbitrary value (DX), while the amount of movement of pointer in a direction orthogonal to the page turning direction is below the arbitrary value (DY). And if a value of "PX-Px" is negative, the next display page setting portion 61 sets the page information of a succeeding page of the current page to the next display page. On the other hand, if the value of "PX-Px" is positive, it sets a preceding page of the current page to the next display page.
Accordingly, if the pointer 2A is moved to the right on the operation unit 1C in FIG. 2, for example, the page information displayed is turned from left to right, while the next page appears. Similarly, if the pointer 2A is moved to the left, the page information displayed is turned from right to left, while the preceding page gradually appears. In this way, an access method for accessing the page information by turning the pages one after another can be implemented in such a manner as to display the page information while visually presenting how the page is turned. That is, in this example, by detecting the movement direction of the pointer (input cursor) residing on the display unit 1 and the operation unit 1C, an intuitive access operation is enabled by simulating the operation of turning directly the page or chapter with a fingertip.
The operation with the tag or in the information access area may be performed by controlling the number of turning pages or the display rate in continuous display in accordance with the operation rate or pressure. In this way, it is possible to effect the display control in more intricate manner through the more intuitive operation.
Second Embodiment
In the second embodiment, a process of holding plural pages is introduced to improve the operability while maintaining the intuitive operation. FIG. 4 is a flowchart illustrating a configuration of the page holding process according to the second embodiment of the invention. As shown in FIGS. 2 and 4, the page information display method of the second embodiment comprises a page holding operation detecting step A11 of outputting a page holding operation detecting signal when a predetermined page holding operation is made at a current page read from the electronic information memory 4 that is to be displayed at present, a holding page number displaying step A12 of displaying the total number of holding pages in accordance with the amount of the page holding operation on the display unit, when the page holding operation is initially detected in this page holding operation detecting step A11, a next display page setting step A13 of setting a page having a page number that is equal to the current page added or subtracted by the amount of the holding operation to a next display page to be displayed at the next time, when the page holding operation detecting signal is output in the page holding operation detecting step A11, and a page turning process step A14 of displaying the next display page set in this next display page setting step A13 in place of the current page on the display unit.
The page holding operation detecting step further comprises a pressure holding page number calculating substep of calculating the number of holding pages in accordance with the magnitude of a pressure applied to the substantially same position of the operation unit 1C, when the operation unit 1C is a pressure detecting type, for example. Also, the page holding amount operation detecting step may comprise a time holding page number calculating substep of calculating the number of holding pages in accordance with the elapsed time of a depressing operation that continues at the substantially same position of the operation unit 1C, instead of the pressure holding page calculating step. Accordingly, in this embodiment, an operation of turning plural pages continuously while grasping a book at the ends with a pressure to turn a few pages of the book is metaphorically simulated to realize a process of "holding" plural pages in accordance with a pressure applied on the display unit 1.
The page turning process step A14 executes a process of turning pages by effecting a page turning operation of moving the fingertip left or right in a state of holding plural pages. If the user holds plural pages but releases hold of the touch panel without effecting the page turning operation, holding plural pages is canceled, and an original operation state is restored.
To indicate the number of holding pages, various forms of display may be adopted. The total number of holding pages grasped actually may be indicated in numerical value, but the state of holding pages may be indicated in some form. For example, FIG. 5 is an explanatory view illustrating a display example of the number of holding pages with the configuration as shown in FIG. 4, wherein FIG. 5A is a view illustrating a pressure circle, and FIG. 5B is a view illustrating a time circle. In the examples as shown in FIGS. 5A and 5B, the holding page number display step as shown in FIG. 4 comprises a substep of displaying the holding display circles 63, 64 defined with a radius of the size corresponding to the amount of holding pages on the display unit 1.
By displaying this holding display circle 63 on the display unit, the number of holding pages with an operation can be intuitively grasped. In the pressure circle as shown in FIG. 5A, the diameter of the circle around the fingertip is increased or decreased in accordance with the magnitude of pressure. The term "in accordance with the magnitude of pressure" not only means that the diameter of circle is proportional to the pressure, but also means that the diameter of circle is increased acceleratively in accordance with the pressure (the number of holding pages is increased). In the case where the operation of a plurality of turning pages with pressure is performed, the maximum diameter (<.infin.) is set in an initial file, because the number of holding pages may depend on the resolution of a pressure sensor. The radius of the pressure circle can be calculated in accordance with the following expression.
(Diameter of pressure circle)=(maximum diameter).times.(current pressure value)/(resolution of pressure sensor) (Number of holding pages)=(diameter of pressure circle)/(differential threshold for user's pressure)
In order to implement a page turning operation with the finger, and a function of holding plural pages (hereinafter referred to as a plural pages turning operation) with the pressure or time, it is necessary that the system can readily discriminate a difference between the page turning operation and the plural pages turning operation. In this embodiment, to validate the plural pages turning operation, this difference can be discriminated as the fingertip is kept for a certain time while touching at the touch panel as shown in FIG. 5C. To clarify that the plural pages turning operation is effective, the pressure circle is displayed in reduction around the fingertip if the plural pages turning operation is validated, as shown in FIG. 5D.
When plural pages are turned with the time as shown in FIG. 5B, the number of holding pages is increased in accordance with the length of the elapsed time. The diameter of the time circle, unlike the pressure circle, may become infinite unless the maximum diameter is set. In other words, in the case where plural pages are held with the time, it is possible to hold as many turning pages as present. In the case of the pressure circle, the diameter can be set to be infinite, but because the pressure sensor has a limited resolution, the operation becomes very sensitive, if the diameter is set to be infinite. An algorithm for calculating the diameter of the time circle (corresponding to the pressure circle) is as follows.
(Diameter of time circle)=F (elapsed time)
(Number of holding pages)=(constant).times.(diameter of time circle)
F (elapsed time) signifies a function having a variable of the elapsed time. Herein, this function is assumed to be increasing.
FIG. 6A is a view illustrating a configuration of a page information display device. As shown in FIG. 6A, in the page information display device of the second embodiment, the display controller 3 comprises a page holding operation detecting portion 64 for outputting a page holding operation detecting signal when a predetermined page holding operation is performed at a current page read from the electronic information memory 4 that is to be displayed at present, and a holding page number display unit 65 for displaying the total number of holding pages in accordance with the operation amount of the page holding operation on the display unit, when the page holding operation is initially detected by the page holding operation detecting portion. The other configuration is the same as the first embodiment of FIG. 2. The page holding operation detecting portion 64 detects the number of holding pages in accordance with the pressure or elapsed time applied on the operation unit 1C. And the holding page number display unit 65 displays this holding page number on the display unit 1.
In order to realize the display controller 3 as shown in FIG. 6, the page information display program comprises a page holding operation detecting command for outputting a page holding operation detecting signal when a predetermined page holding operation is performed at a current page read from the electronic information memory that is to be displayed at present, and a holding page number display command for displaying the total number of holding pages in accordance with the operation amount of the page holding operation on the display unit, when the page holding operation is initially detected upon the page holding operation detecting command.
In FIG. 6A, a pressure circle 63A is displayed on the display unit. The pressure circle 63A is only drawn with an outer contour, and the article under the circle can be read during the operation. On the other hand, the actual number of holding pages can not be displayed, but the number of holding pages can be approximately grasped in terms of the diameter in this example. Hence, multiple operations may be needed. On the contrary, in the example as shown in FIG. 6B, the number of holding pages is displayed in numerical value inside (or around the circumference of) the pressure circle. In the example as shown in FIG. 6B, four pages are being held, and if the page turning operation is performed in this state, a preceding or succeeding page by four pages before or after the current page is displayed, depending on a direction of the page turning operation.
FIG. 7 is an explanatory view illustrating one example of displaying a multiloop with the configuration as shown in FIG. 4. In the example as shown in FIG. 7, the holding page number displaying step A12 comprises a substep of displaying a multiloop consisting of a number of circles around the same center and corresponding to the page holding amount. With this method of displaying the multiloop, the number of loops increases or decreases like a tree ring with the greater or smaller pressure. Therefore, the loop serves as a memory for holding pages. The number of holding pages is calculated readily by changing the color or the line thickness of loop at every five pages, for example. That is, as the rule of 5 cm or 10 cm has the graduation that is easy to read, the color or the line thickness of loop may be changed as a memory at every five pages. In the example as shown in FIG. 7B, there is a circle indicating the holding in an inner region, with a number of loops corresponding to the number of holding pages around its outer circumference. The multiloop 63C as shown in FIG. 7B indicates that two pages are being held, and the multiloop 63C as shown in FIG. 7C indicates that four pages are being held. Also, the circle indicating the holding may be omitted.
FIG. 8 is an explanatory view illustrating one example of displaying a coated circle with the configuration as shown in FIG. 4. In the example as shown in FIG. 8, the holding page number displaying step A12 comprises a substep of displaying a coated circle defined with a radius of predetermined size, the circle being coated corresponding to the page holding amount. For the coated circle, various forms of coating may exist as shown in FIGS. 8 and 9. The coated circle desirably has its diameter varied corresponding to the holding page number in each form of coating, but the number of holding pages may be indicated according to the coating color or the extent of variation. In this case, the coated circle itself has its fixed diameter.
FIG. 8A is a view illustrating one example of the coated circle in a solid single color. In the coating of solid single color, the content of the page information at the current page can not be read, and hence, this solid coating in single color may be confused with the operation of enlarging part of the page information. FIG. 8B is a view illustrating one example of a coated circle having transparency. If the coated circle is translucent, the article under the coated circle can be read even during the operation of turning plural pages.
FIG. 8C is a view illustrating one example of a coated circle having gradation. This display method is suitable employed when the number of holding pages is detected using the pressure. This gradation makes it possible to display the limit of resolution or the current operation state clearly by making dense the color in the central portion in accordance with the magnitude of pressure. Even if the actual pressure distribution is not displayed, this effect can be obtained. That is, if the actual paper face is pressed strongly (i.e., turning more pages corresponds to an action of pressing on the paper face more strongly), the paper face is sunk physically. Therefore, the circle is gradated so that the color is dense (dark) in the central portion with the high pressure, and becomes lighter toward the outside. Thus, the operation state can be displayed excellently. If the coated circle with gradation is translucent, as shown in FIG. 8B, how the paper face is sunk with pressure can be represented.
FIG. 9 is an explanatory view illustrating another example of displaying a coated circle with the configuration as shown in FIG. 4. This display method represents a sense of how the paper face is sunk at the fingertip by deforming the paper face three-dimensionally in accordance with the pressure. In the example as shown in FIG. 9A, an outside loop of the coated circle is drawn with the line, but this outside loop can be omitted. The term "three-dimensionally" does not necessarily mean dealing the paper face as the three dimensional graphics, but is met if a sense of sinking can be represented. For example, the image data of a part of the current page drawn with the reference as shown in FIG. 9B may be mapped onto a framework as shown in FIG. 9C or 9D to represent the deformation caused by the medium pressure or large pressure.
Third Embodiment
In the third embodiment, the current page being turned and the next display page are displayed effectively to promote an understanding of the correspondence between the operation and process contents by displaying the reaction or process of an access device as a result of operation clearly.
FIG. 10 is a flowchart illustrating a process example of selecting a display format according to the third embodiment. Referring to FIG. 10, the page information display method comprises a page turning operation detecting step A21 of outputting a page turning operation detecting signal having the number of holding pages and a page turning direction defined, when a page turning operation for turning one or more pages is performed in the operation unit, a next display page setting step A22 of setting a preceding page or a succeeding page by the number of holding pages before or after the current page depending on the page turning direction to a next display page to be displayed at the next time, when the page turning operation is completed in the page turning operation detecting step A21 and the page turning operation detecting signal is output, and a page turning process step of displaying the next display page set in the next display page setting step A22 in place of the current page on the display unit.
And the page turning process step comprises a next display page reading substep A23 of reading the next display page from the storage unit, when the next display page is set, a turning state display data creating substep A24 of transforming the current page data making up the current page that is being displayed on the display unit at every unit display time, as well as creating the turning state display data into which the current page is transformed, when the page turning operation detecting signal is output, and a turning state display data overwriting step A25 of overwriting the turning state display data created in the turning state display data creating substep on the next display data read in the next display page reading substep at every unit display time until the turning state display data is exhausted.
In this embodiment, a behavior of the page being actually turned is visually displayed on the display unit in performing the page turning process, to promote an intuitive understanding that the current page is deleted from the display unit 1 and the next display page appears on the display unit 1. Also, if the page turning process is displayed excellently, it is easier to learn that the page turning operation performed by the user is correct. Herein, the page turning operation detecting step A21 detects either turning one page in the first embodiment or holding plural pages in the second embodiment. Turning one page can be also considered as the operation of holding one page. The next display page setting step A22 designates a next display page on the basis of the page turning direction and the number of holding pages detected in the page turning operation detecting step A21. The page turning process comprises displaying the next display page at stages, as well as deleting the current page at stages. Therefore, the transformed current page is overwritten on the next display page. There are various ways of transforming the current page.
FIG. 11 is a block diagram illustrating a configuration of the page information display device according to the third embodiment. Referring to FIG. 11, the page information display device comprises an electronic information memory 4 for memorizing the electronic information having plural pages of information in a unit of page of predetermined size, a touch panel 1 for displaying the electronic information stored in the electronic information memory 4 in the unit of page, as well as inputting an operation to gain access to the page information, and a display controller 3 for controlling the display of the page information stored in the electronic information memory on the basis of an operation content input into the touch panel 1.
And the display controller 3, like that of the first embodiment as shown in FIG. 2B, comprises a page turning operation detecting portion 60 for outputting a page turning operation detecting signal with the number of holding pages and a page turning direction defined, when a page turning operation for turning one or more pages is performed on the touch panel, a next display page setting portion 61 for setting a preceding page or a succeeding page by the number of holding pages before or after the current page depending on the page turning direction to a next display page to be displayed at the next time, when the page turning operation is completed in the page turning operation detecting portion 60 and the page turning operation detecting signal is output, and a page turning process portion 62 for displaying the next display page set in the next display page setting portion in place of the current page on the display unit.
This page turning process portion 62, as shown in FIG. 11, comprises a next display page reading function 68 of reading the next display page from the electronic information memory, when the next display page is set, a turning state display data creating function 69 of transforming the current page data making up the current page that is being displayed on the touch panel 1 at every unit display time as well as creating the turning state display data into which the current page is transformed, when the page turning operation detecting signal is output, and a turning state display data overwriting function 70 of overwriting the turning state display data created in the turning state display data creating function 69 on the next display page read in the next display page reading function 68 until the turning state display data is exhausted.
A page information display program for realizing the page turning process portion as shown in FIG. 11 comprises, as the page turning process commands, a next display page reading command for reading the next display page from the electronic information memory, when the next display page is set, a turning state display data creating command for transforming the current page data making up the current page that is being displayed on the display unit at every unit display time as well as creating the turning state display data into which the current page is transformed, when the page turning operation detecting signal is output, and a turning state display data overwriting command for overwriting the turning state display data created in accordance with the turning state display data creating command on the next display page read in accordance with the next display page reading command at every unit display time until the turning state display data is exhausted.
Referring to FIGS. 12 and 13, a form of transforming the current page (i.e., a display format of the page turning process) will be described below. In the examples as shown in FIGS. 12 and 13, the page turning direction is leftward in the figure, and for the simplification of explanation, the page information has an alphabet or a triangle or circle over the entire surface. FIG. 12A is a view illustrating one example of the display format of overwriting type. In the example as shown in FIG. 12A, the turning state display data creating step A24 further comprises an overwriting display control substep of deleting an area on the start point side in the page turning direction at every unit time. In the example as shown in FIG. 12A, the turning state display data 71A is produced by deleting a current page 71 from the right hand side in the figure at stages. By overwriting this turning state display data 71A on the next display data 72, the turning state is displayed. In this overwriting type, the next display data successively appears from the right hand side of the current page.
FIG. 12B is a view illustrating one example of the display format of slide type. In the example as shown in FIG. 12B, the turning state display data creating step A24 comprises a slide display control substep of deleting an area on the end point side in the page turning direction at every unit time as well as shifting the current page data by the amount of deleted area in the page turning direction. In the example as shown in FIG. 12B, the left hand side of the current page data 71B is deleted in the figure, and the current page data is shifted by the amount of deleted area in the page turning direction. This shifted image data as the turning state display data 71C is overwritten on the next display page 72. In the example as shown in FIG. 12B, the current page is slid gradually in the page turning direction so that the next display page 72 appears.
FIG. 13A is a view illustrating one example of the display format of compression type. In the example as shown in FIG. 13A, the turning state display data creating step A24 comprises a compression display control substep of reducing the display length in the page turning direction at every said unit time as well as compressing the current page data to the reduced display length in the page turning direction. In the example as shown in FIG. 13A, it is allegorized that the current page is lifted in a normal direction (z axis direction) of the display unit at the end (or left end in the figure) along the page turning direction. If the display area of the current page 71 is reduced and compressed in the page turning direction, the current page has a shape as indicated by reference sign 71D. Then if further compressed, the current page has a shape as indicated by reference sign 71E. If they are overwritten on the next display page 72, the current page has its shape changed sequentially from a state indicated by reference sign 73D to a state indicated by reference sign 73E. Defining .theta. in the xy plane as shown in FIG. 13A, the current page 71 is transformed so that the change rate (or angular velocity) of .theta. may be constant. Thereby, the behavior of how the page is turned can be represented dynamically.
FIG. 13B is a view illustrating one example of the display format of 3D type. In the example as shown in FIG. 13B, the turning state display data creating step A24 comprises a three dimensional space defining substep of defining a virtual space in a normal direction of the display unit, a current page rotating substep of rotating the current page within the virtual space around the end point side in the page turning direction, and a three dimensional display control substep of drawing a front side and a back side of the current page rotated virtually in the current page rotating substep in a two dimensional plane as viewed in a normal direction of the display unit as well as setting the drawing data to the turning state display data. In the example as shown in FIG. 13B, the state of turning the paper in the three-dimensional space is displayed on a two-dimensional plane. As an example of rotating the current page, there is a shape as indicated by reference sign 71G in FIG. 13B. In this case, the backside of the current page is indicated by reference sign 71H. The current page is drawn in the two-dimensional plane, and superposed on the next display page 73F, resulting in a shape as indicated by reference sign 73G. In this embodiment, because the page information is not displayed on the back side of the page, the current page may be drawn in a state where the content of the current page is seen through the back side, or the content of the next display page is reflected on the back side of the current page.
Fourth Embodiment
In the fourth embodiment, for the purpose of an easy understanding of the relation between the operation content and the process content in order to enhance the operability with the tag, the tag is effectively used for the display of the operation state. That is, in the fourth embodiment, as a method of indicating the total number of pages and the position of the current page as well as enabling an operation of turning the pages intuitively, the tag is employed. Referring to FIGS. 14 to 28, the method of displaying the tag will be described below, and then the relation between holding plural pages and the tag, and the extended use of the tag in the third embodiment, will be described below.
FIG. 14 is a flowchart showing a page information display process according to the fourth embodiment of the invention. FIG. 15 is a block diagram showing a configuration of a page information display device which is suitable for practicing this process. In this embodiment, a display unit 1 is provided with an information access area 5 for displaying the page information, as shown in FIG. 15. Further, one and other tag display areas 6, 7 are provided to the left and right, or upward and downward of this information access area 5. A tag of a page displayed in the information access area is displayed in a right-side tag display area. Beneath this current page tag, a tag for a succeeding page (succeeding page tag 9) having a page number greater than a current page is appended. And in a left-hand tag display area, a tag for a preceding page (preceding page tag 10) of the current page is appended. In an example of FIG. 15, the fourth page is displayed.
In the example as shown in FIG. 15, the page information display device comprises a storage unit (electronic information memory) 4 for storing the electronic information having a plurality of pages in a unit of page of predetermined size, a display unit (display) 1 having an information access area 5 for displaying the electronic information stored in the storage unit 4 in a unit of the page and a tag display area 6, 7 for displaying a tag indicating the content of the page, the tag display area being provided on both ends of the information access area 5, and a display controller 3 for displaying the page information read from the storage unit 4, with a tag appended, on the display unit. The display controller executes the process as shown in FIG. 14.
Referring to FIG. 14, the display controller first reads the electronic information of a page designated with page designation information (step S1). Subsequently, the height of a current page tag is determined, on the basis of the page number of read current page (step S2, determining the current page tag height). Further, the color and shape of a tag indicating each page preceding and succeeding the current page are determined (step S3). At this step S3, the highlighting of current page tag, the tag color or color variation, and the tag shape variation are set.
Subsequently, the current page of current display object read from the storage unit is displayed in the information access area at step S4. Further, the tag appendant to the current page is displayed in the one or other tag display area at step S5 (displaying the current page). And before or after displaying the current page, a tag 9 appendant to each page (fifth to seventh page) following the current page (fourth page in the example of FIG. 15) is displayed in one tag display area (S6, displaying the succeeding page tag). Also, before or after displaying the current page, a tag appendant to each page preceding the current page in page number is displayed in the other tag display area (S7, displaying the preceding page tag). In the example of FIG. 14, each tag has the tag content displayed, the tag content being a content of tag (step S8). In the example as shown in FIG. 15, the page number is displayed as the tag content (displaying the page number). Other than the page number, a mark or character indicating the place of page may be used.
Referring to FIG. 15, the display controller 3 has a variety of functions to implement the process as shown in FIG. 14. Specifically, it comprises an electronic information display portion 11 for displaying the page information of a current page of current display object read from the storage unit 4 in the information access area 5, and a current page tag display portion 12 for displaying the current page tag in the one or other tag display area. The display controller 3 further comprises a succeeding tag display portion 13 for displaying a tag appendant to each page following the current page at a position forward of the height of the current page tag in the one tag display area, and a preceding page tag display portion 14 for displaying a tag appendant to each page preceding the current page in page number at a position rearward of the height of current page in the other tag display area. In a preferred embodiment, the display controller 3 comprises a tag display mode setting portion 15 for setting the mode of tag (shape and color). The current page tag display portion 12 may have a current page tag height calculating function of calculating the page height of current page, on the basis of the ratio of the page number of current page relative to the total page number of electronic information.
The display controller 4 comprises a CPU for executing a page information display program and a RAM which is a main memory of this CPU. The page information display program is stored in a storage medium such as a CD-ROM and carried to the page information display device. The display controller 4 controls a program reading portion 16 such as a CD-ROM drive to read a program and store it in the storage unit 4. If this page information display program is executed, all or part of the process as shown in FIG. 14 is performed.
This page information display program may comprise the commands for operating the display controller 4 including a current page display command for displaying a current page of current display object read from the storage unit 4 in the information access area 5 and displaying a tag appendant to the current page in the one or other tag display area 6, 7, a succeeding page tag display command for displaying a tag appendant to each page following the current page in the one tag display area, before or after displaying the current page, and a preceding page tag display command for displaying a tag appendant to each page preceding the page number of the current page in the other tag display area, before or after displaying the current page.
As shown in FIG. 15, the display 1 consists of the information access area 5 and the tag display areas 6, 7 provided on the both sides of the information access area 5. For example, the electronic information display portion 11 draws the access information stored in the storage unit 4 in the information access area 5 of the display 1. Further, the tag display mode setting portion 15 specifies the tag display mode in accordance with the preselected setting. Subsequently, each tag display portion 12, 13 and 14 draws one sheet with tags 8, 9, 10 indicating the tag contents 18 such as the page number appended in the tag display area 6, 7, having an appearance with a tag added sheet. The current page tag 8 appended to the current page displayed in the information access area 5 has desirably a specific appearance of color or shape with a highlighted font for the tag content 18 such as the page number, for example, to easily distinguish it from other tags 9, 10.
Each tag 8, 9, 10 is arranged in accordance with the tag content 18 such as the page number. To make the page arranging order of the page information clear, the absolute positional relation of information provided for the computer is clarified by drawing comically the overlapping condition of tags. For example, the tag 10 displayed in one tag display area 6 has a smaller page number than the page number of the current page. The tags are displayed in overlapping condition so that the tag having a greater page number is placed visually in front of the tag having a smaller page number. Further, the tag displayed in the other tag display area 7 has a greater page number than the page number of the current page. The tags are displayed in overlapping condition so that the tag having a greater page number is placed visually in the rear of the tag having a smaller page number.
As compare d with the tag content 18 such as the page number of the tag 8, 9, 10 appended in the information access area 5, the tag having a greater tag content 18 such as page number is displayed in one tag display area 6, and the tag having a smaller page number is displayed in the other tag display area 7. Also, the tags 8, 9, 10 are displayed differently in appearance in accordance with the page number of tag, which is an effective drawing method for clarifying the relative positional relation of access information.
FIG. 16 is an explanatory diagram showing an initial state of the tag display according to this embodiment of the invention. FIG. 17 is an explanatory diagram showing a tag display example in which the fourth page is displayed in the configuration as shown in FIG. 16. Herein, the display unit 1 has the information access area 5 and the tag display areas 6, 7. The electronic information 1A stored in the storage unit 4 is displayed in the information access area 5 by reconstructing, as the page information in a unit of page, the amount of information which can be displayed in the information access area 5. The page information is data in a unit of page of predetermined size.
The page information display device arranges the tags 8, 9, 10 in the order of the tag content 18 such as the page number, with each tag 8, 9, 10 appended to the extremity of each page marking the tag content 18 such as page number, to exhibit that the arrangement of page information has a linear information structure, so that the page information in a unit of page can be superposed in succession like a book.
In the example of FIG. 16, the total page number of electronic information is 7 pages. Seven tags having the length of the tag display area 7 divided by the page number 7 are displayed. In order to overlap the tags, as shown in FIG. 16, this tag length is equal to the length divided plus the overlapping length. Typically, for the tag 8 appendant to the current page, the height or position of tag in a tag display direction may be determined, on the basis of the ratio of the page number of current page to the total page number of electronic information, at a step S2 of determining the current page tag height as shown in FIG. 15.
In the example as shown in FIG. 16, the page number of the page with the tag appended is displayed as the tag content indicated within the tag at a step S8 of displaying the page number. Accordingly, the number appended to the tag in FIG. 16 is the page number of electronic information. As shown in FIG. 16, even in the case where the page information is accessed using only one information access area 5, the tag having the page number is displayed in the tag display area, so that the user can see intuitively the total amount or depth of electronic information. And in the example of marking the tags 8, 9, 10 with the page number, unlike the tag having the heading information marked, there is no problem that the page number can not be fully written in the tags 8, 9, 10. Of course, if there is a sufficient space in the tag display area 6, 7, an icon or the like suggesting the content of character information or page information may be attached.
Before or after the step S8 of displaying the page number, the current page tag 8 may be highlighted. In the example as shown in FIGS. 16 and 17, the bold character is used as the font of current page tag.
Referring to FIGS. 16 and 17, the overlapping of tags will be described below. Firstly, with respect to the current page tag 8, as shown in FIG. 16, the succeeding page tags 9a to 9f are lower level tags. The order is such that the tag is at lower level as the page leaves away from the current page. Accordingly, the current page tag 8 is at the uppermost level. And the tags 9a, 9b, . . . , 9f are placed at lower level in the order of 9a, 9b, . . . , 9f. The overlapping of tags is such that the lowermost tag 9f is at the lowest level, and the tags are overlapped in the order of 9e, 9d, . . . , 9a. Thus, the user can understand the structure from the current page to the seventh page at a glance. In a case where there is an operation of gaining access to the fourth page, the preceding page tags are transferred to the one tag display area 6 in this embodiment, as shown in FIG. 17, rather than changing the overlapping relation only in the other tag display area 7. Thereby, the position of current page relative to the total page number of electronic information can be quickly and correctly informed to the user.
As shown in FIG. 17, among the preceding page tags 10, a tag 10c indicating a previous page (third page) of the current page is at the uppermost level, and the tag having smaller page number is placed at the lower level. Thereby, the depth of electronic information can be represented. After all, the hierarchical relation is such that the current page is at the uppermost level, and the page is positioned at lower level as the absolute value of a difference between the page number of the page and the current page number increases. Therefore, at a step of defining the tag relation, the current page tag 8 or the page tag preceding or succeeding the current page is at the uppermost level, and the page is positioned at lower level as the absolute value of a difference between the current page and the page for appending the tag increases. And at a step of setting the overlapping, the upper level tag overlaps the lower level tag in the one or other tag display area in accordance with the hierarchy of the page defined at the step of defining the tag relation. To clarify the order of arranging the pages, the depth of page can be visualized on the tag display area 6, 7 by comically drawing the overlapping of tags. In this way, in this embodiment, the tag 8, 9, 10 indicating the tag content 18 such as the page number is appended to the page information, which is then displayed in the tag display area 6, 7. Using an input unit 2, the tag 8, 9, 10 can be directly designated. The page information corresponding to the tag content 18 such as the page number for the tag 8, 9, 10 is displayed in the information access area 5. Then, the display mode for the tag 8, 9, 10 appended to the page information is changed, thereby making it possible to easily grasp the amount of information or the information structure provided for the computer. This is because the comparison between the number of tags in one tag display area 6 and that in the other tag display area 7 is visually easily made as shown in FIG. 15.
Further, in this embodiment, it is also possible to detect an input operation for accessing the page information such as turning the page in the information access area 5. For example, using a pointing device for the input operation with a fingertip such as a touch panel over the tag display area 6, 7 for input, there is provided a user interface which enables an access operation to be performed intuitively with the gesture of turning the page.
In the example of effecting the process as shown in FIG. 14, an access area and an operation area are provided in the display area on an output device of the computer to enable the electronic information displayed in the information access area to be fully listed. Further, the amount of information which can be displayed in the information access area is appropriately drawn by appending the tag indicating the page number to the electronic information in a unit of page, with the overlapping of tags. Therefore, the user can easily grasp visually the electronic information arranged for each page. The user, unfamiliar with the computer can also easily understand the information structure in the order of pages for the electronic information.
According to this embodiment of the invention, the user can easily grasp visually the absolute position of the page being currently accessed with respect to the amount of information provided for the computer in the order of arranging the tags. And the user can also easily grasp the relative position between the page or chapter being currently accessed and the arbitrary page or chapter, using the order of arranging the tags.
FIG. 18 is an explanatory diagram for defining the terms such as "tag width" for use in the present specification. Normally, in the English text or Japanese text written laterally, the characters are written from left to right and the page is turned from right to left. On the other hand, for the Japanese text written vertically, the page is turned from right to left. Also, in the case where the A4 sheets of paper for a report are fastened at the upper side, the page is turned from bottom to top. In this way, the direction of turning the pages may exist in the books, reports or magazines. Herein, a term "page turning direction" referred to above means one direction as indicated by reference numeral 34, or a direction of turning the page from right to left in FIG. 18. The page turning direction is typically parallel (or anti-parallel) to the character writing direction, or orthogonal to it. In this embodiment, a term "tag display direction" is defined as a direction orthogonal to the page turning direction. The tag is displayed along this tag display direction 35. When turning the page from right to left, the tag display direction is from top to bottom. When turning the page from bottom to top, the tag display direction is from left to right as shown in FIG. 14.
Herein, a term "tag length" is defined as a distance from the start point of tag to the end point in the tag display direction. A term "tag width" is defined as a length of tag in the page turning direction. Accordingly, if the tag length and the tag width are determined, the size required to display one tag can be determined. In this embodiment, the position of arranging the tag is variable along the tag display direction, depending on various elements. Herein, a term "tag height" can be defined as a length from one end point in the tag display direction. When the tag is trapezoid, the elements specifying one tag are "tag length", "tag width" and "tag height", as far as the angle of trapezoidal side face is determined.
Adjusting the Tag Length at the Start Time of Access
In this embodiment, a method of determining the tag length at the start time of access is disclosed. The electronic information 1A or electronic information 1B has the total page number which is variable depending on its contents. In the example as shown in FIGS. 16 and 17, the length in the tag display direction divided by the total page number is equal to a tag length. However, as the total page number increases, the tag length is too short to effect a simple uniform allocation. In an example as shown in FIG. 19, solving means for favorably effecting the tag display when the total page number is large is shown.
When there are so many number of pages that it is difficult to draw the tags in the operation area with sufficient tag interval, the tag is drawn by gradually narrowing the interval between adjacent tags up to a certain page at the height proportional to the absolute value of a difference in the page number between the tag associated with the access area and other tags as shown in FIG. 20 (semantic display). The tags beyond the certain page range are superposed and drawn densely with a fixed tag interval.
Since in the semantic display the tag length is shorter successively for every tag, the tags for the current page and its neighboring pages can excellently have the tag content such as page number, and the position of the current page relative to the total page number is clear. Further, an interface which enables the user to detect the total page number at a glance can be constructed.
Referring to FIG. 19, first, the length of a current page tag 8 appendant to the current page is determined by referring to the tag length as the reference (step S41, a step of calculating the tag length). Subsequently, the length of each tag is set to be shorter at lower hierarchical level, with the tag length of the current page tag 8 as the maximum value (step S41, a step of creating the semantic display). And when the length of tag display area is too insufficient for the total page number, a line tag display 51A is set for a certain range (step S43, a step of setting the line tag). And the tags are displayed semantically (step S44). Depending on the content of page information, an interval display line for changing the thickness of tag contour line may be inserted at every page intervals (a step of inserting the interval display line). And the tag content such as page number is displayed for the tag capable of indicating the tag content in accordance with the tag length and the font size for display (step S46). Further, the page information of current page is displayed in the information access area.
Referring to FIG. 20, the current page is the 28th page. With the tag length of this current page tag 8 as the maximum value, the tag length is shorter in the order of tags 9a, 9b, . . . , 9e. In this example, the tag length is 0.8 times the previous one for each tag from the current page to effect the semantic display. Among the tag shapes indicated by reference sign 51A, the line tags which have only lower lines displayed are also implemented by this multiplier of 0.8. If the resolution of the display can not follow the line interval of tag, the tags are continuously displayed by the line. In the example of FIG. 20, the previous and next tag lengths are 0.8 times the current tag length, with the tag length of the current page tag 8 in the other tag display area 7 as the reference. As a result, the tag length which is displayed at the uppermost level (tag for 27th page) in the one tag display area is equal to the tag length indicating the 29th page. In this way, by making the tag length of the previous page shorter than the tag length of the current page, the current page tag is highlighted, with more deepness.
The semantic display as shown in FIG. 20 may be made at any time, irrespective of the total page number of page information. But in the case where the total page number is small, the semantic display may impede the effective use of the tag display area. Therefore, it is desirable to switch between the normal display as shown in FIGS. 16 and 17 and the semantic display as shown in FIG. 20 in accordance with the total page number of page information. This switching of display mode can be made based on the minimum reference length of the current page tag. That is, when all the tags are allocated over the entire length of the tag display area in the tag display direction, as shown in FIG. 16, the semantic display may be effected, as far as the tag length per tag is below the reference length.
FIG. 21 is a table showing a data structure of the page information display data required to switch between these display modes. The minimum reference length is simply determined by the number of dots, as shown in FIG. 21A, when the physical length and resolution of the display are predetermined. On the other hand, to provide a data structure not dependent on the actual display, an input of the physical length and the number of dots for display may be accepted at the time of execution, and the minimum reference length may be determined by the physical length in meter or the like. In this way, the user can use uniformly various apparatuses in respect of different page turning operations or different displays of deepness using the tag. When the semantic display is made, the sense of deepness can be represented corresponding to the total number of pages, even if the tag display area is not necessarily provided on the left and right sides. However, from the aspect of recognizing the current page position promptly, the tag display area is desirably provided on the left and right sides.
In the example of FIG. 21A, the page information display data includes the display dot number data of the display unit in each of the page turning direction and the tag display direction, the total page number data of electronic information stored in the storage unit, the dot number data per unit tag which is equal to the number of dots in the dot number data divided by the total page number in the total page number data, and the minimum reference data having the minimum reference width of tag which is predetermined for the tag length in the page turning direction and the minimum reference length of tag which is predetermined for the tag length in the tag display area, which are in comparison with the number of dots per unit tag. In the example of FIG. 21A, the length of unit tag is selected to a larger value between 80 dots which is the minimum reference length and the value of 1600 dots divided by the total page number ap. Using this data, it is possible to determine the tag length of current page tag, and switch between the normal display and the semantic display.
In the example of FIG. 21B, the minimum reference length is selected to a larger value between 2 cm or the value of the tag display area length divided by the total number page ap. The page information manager 43 can obtain the physical length per dot from the relation between the display dot number data and the tag display area length, and thereby the number of dots per unit tag length.
The page information display data may have the tag ratio data which is referred to when the dot number data per unit tag is shorter than the minimum reference data. This tag ratio data is a ratio of the tag length varied successively from the current page of electronic information to the end page or start page relative to the tag length of the minimum reference data. And the tag length is calculated successively from higher to lower hierarchy by referring to this tag ratio data. Then, the tag is overwritten in the tag display area from lower to higher hierarchy. In this way, the tags can be overlapped well. When the total page number is large, the line tag is automatically produced in accordance with the resolution. Consequently, a consistent interface can be constructed.
FIG. 22 is a functional block diagram showing the configuration for designating the tag shape using the page information display data as shown in FIG. 21. In an example of FIG. 22, there are provided a storage unit 4 for storing the electronic information having a plurality of pages in a unit of page of predetermined size, a display 49 having an information access area 5 for displaying the electronic information stored in the storage unit 4 in a unit of the page, and a page information display portion 56 for enabling the electronic information stored in the storage unit 4 to be read on the basis of the page specifying information externally input, and displayed in the information access area.
The display 49 has a tag display area 6 provided along with the information access area on one end or both ends in the page turning direction to turn the page of page information in the information access area 5. Further, it comprises a tag shape calculating portion for calculating the length of tag appendant to each page in the tag display direction on the basis of the length of tag display area in the tag display direction which is orthogonal to the page turning direction, and the total page number ap of electronic information stored in the storage unit 4, and a tag display portion 55 for displaying the tag in the tag display area on the basis of the length of tag which is calculated by this tag shape calculating portion.
The tag shape calculating portion comprises a tag display area width determining portion 53 for determining the width of the tag display area, on the basis of the minimum reference width of tag and the size of electronic information in the page turning direction, for example. For example, if the residual length of the page turning area when the longitudinal length of page information is enlarged or reduced to the longitudinal length of the display is below the minimum reference width, the enlargement or reduction ratio of page information may be changed. Also, the tag shape calculating portion comprises a current page tag length setting portion 54 for setting the tag length of current page to the tag length per unit tag which is the length of the display 49 in the tag display direction, divided by the total page number ap of electronic information, and setting the length of current page tag appendant to the page being currently displayed to the minimum reference length, when the tag length is shorter than the minimum reference length of tag. When the tag length of current page is set to the minimum reference length, the semantic display is made in this example. Or otherwise, the normal display is made.
To display the tags on the basis of the minimum reference length, a tag table (or the page information display data as shown in FIG. 21) containing the minimum reference width of tag in the page turning direction and the minimum reference length of tag in the tag display direction which are predetermined on the basis of the size of the display 49 is stored in the storage unit 4. The tag display portion 55 may display the tag having a width determined by the tag display area width determining portion 53 and a length determined by the current page tag length setting portion 54 in the tag display area.
With the configuration as shown in FIG. 22, the operation of each portion can be realized by the CPU and the program, in the same way as shown in FIG. 15. For example, a program for calculating the tag length, using the page display information of the data structure as shown in FIG. 21, has a tag length calculation command for calculating the length of each tag appendant to each page in the tag display direction on the basis of the length of tag display area in the tag display direction and the total page number ap of electronic information stored in the storage unit 4, and a tag display command for displaying the tag in the tag display area on the basis of the length of each tag calculated in accordance with the tag length calculation command. The tag length calculation command contains a subcommand for effecting translation between the physical length and the number of dots, if the minimum reference length of FIG. 21B is the physical length.
FIG. 23 is s flowchart showing a process of determining the tag width and the tag length using the data of the data structure as shown in FIG. 21B. Firstly, the physical length information of the display 49 in the page turning direction is acquired (step S51, a step of acquiring the physical length). Subsequently, the minimum reference width of tag at the resolution of the display is calculated on the basis of the physical length information acquired at step S51 of acquiring the physical length and the minimum reference width of tag in the page turning direction which is predetermined by the physical length (minimum tag width calculation step). And the width of the tag display area is determined on the basis of the minimum reference width dependent on the display 49 calculated at step S52 of calculating the minimum tag width and the size of electronic information (step S52 of determining the tag display area width).
Subsequently, the physical length information of the display in the tag display direction which is orthogonal to the page turning direction is acquired (step S53, a step of acquiring the physical length). Then, the minimum reference length of tag at the resolution of the display is calculated on the basis of the physical length information acquired at step S53 of acquiring the physical length and the minimum reference length of tag in the tag display direction which is predetermined by the physical length (minimum tag length calculation step). When the tag length per unit tag which is equal to the length of the display in the tag display direction divided by the total page number of electronic information is shorter than the minimum reference length, the length of current page tag appendant to the page being currently displayed is set to the minimum reference length (step S54, a step of setting the current page tag length).
And the tag having a width determined at step S52 of determining the tag display area width and a length determined at step S54 of setting the current page tag length is displayed in the tag display area (step S55, tag display step). Thereby, the tag having an excellent shape can be displayed without being dependent on the resolution.
FIG. 24 is a flowchart showing a process of switching between the normal display and the semantic display. As shown in FIG. 24, the total page number of electronic information is acquired in starting the display of page information (step S61). And the tag length per tag is calculated by dividing the number of dots in the tag display direction by the total page number (step S62). Then, a comparison is made between the calculated tag length and the minimum reference tag length as shown in FIG. 21 for example. If the calculated tag length is longer, the normal display is effected (step S64). On the other hand, if the calculated tag length is shorter than the minimum tag length, the semantic display with a multiplier of 0.8 is effected (step S65).
The page information display device for enabling the selection of the display mode may comprise, in addition to the configuration of FIG. 22, a tag display mode selecting portion for selecting the normal display in which the length of tag to be displayed in the tag display area is a fixed length, when the total page number of electronic information is a predetermined number or less, or selecting the semantic display in which the tag length is reduced stepwise from the current page tag, when the total page number exceeds the predetermined number.
Adjusting the Tag Length After Turning the Page
A specific example will be described below in which the tag is redisplayed, after some operation is applied to the page information and tag on the display, and a different page is displayed. As to how to display the tag after turning the page, the adjustment of the tag height is required. In the example of FIGS. 16 and 17, the normal display is effected. The current page tag is moved from the other tag display area 6 to the one tag display area 7 while maintaining the tag height constant. In the semantic display as shown in FIG. 20, the tag can not be continuously moved with the constant tag height maintained. In the present example, the measures for this point are disclosed.
FIG. 25 is a flowchart showing a process for redisplaying the tag after turning the page. In an example of FIG. 25, firstly, the tag height of current page is calculated (step S71). This step S71 of calculating the current page tag height calculates the height of current page tag appendant to the current page number of current display object, on the basis of the ratio of the current page to the total page number of electronic information. In the normal display, the height of tag once displayed is not changed. On the other hand, in the semantic display, the height of current page tag is changed in accordance with the page number of current page to be displayed.
Subsequently, the current page read from the storage unit 4 is displayed in the information access area. The tag appendant to the current page is displayed in the one or other tag display area 6, 7 at a current page tag height calculated at step S71 of calculating the current page tag height (step S72 of displaying the current page tag). Before or after this step S72 of displaying the current page, the tag 9 appendant to each page succeeding the current page is displayed in the one tag display area 9 at a smaller height than the current page tag height (step S73 of displaying the succeeding page tag). On the other hand, the tag appendant to each page preceding the page number of current page is displayed in the other tag display area 10 at a larger height than the height of current page tag (step S74 of displaying the preceding page tag).
Subsequently, the procedure waits for an operation of turning the page (step S75). Further, when there is the operation of turning the page, the page turning is displayed like animation with the tag appended to the page being turned, while maintaining the tag height of current page tag, as shown in FIG. 26 (step S76). Then, the page after being turned is set as the current page (step S77).
In this example, a process after resetting the current page is different between the normal display and the semantic display. That is, in the semantic display (step S78), the tag height of current page is recalculated on the basis of the ratio of the current page to the total page number (step S71 of redisplaying the same ratio height tag). On the other hand, in the normal display, the current page tag is displayed while maintaining the height of each tag (step S72 of redisplaying the same height tag). Thereafter, this process is repeated.
A page display program for implementing this process may have, for example, a tag length calculation command, a normal display command, a semantic display command, and a tag height control command. Specifically, the tab length calculation command calculates the tag length per tag on the basis of the total page number information of electronic information and the length of the tag display area. The normal display command sets the calculated tag length to a display tag length when the calculated tag length is above a predetermined tag length. The semantic display command sets the predetermined tag length to the tag length of current page when the calculated tag length is below the predetermined tag length and sets the length of tag appended to each page preceding and succeeding the current page to a shorter length stepwise, with the tag length of current page at the uppermost level. The tag height control command redisplays the tag at the constant height of each tag during the normal display or by calculating the tag height on the basis of the page number of a new current page during the semantic display when there is an operation of turning the current page displayed in the information access area. The semantic display command may be initiated when the normal display command can not be executed. Since the tag height control command requires the information of whether the normal display or the semantic display is made, a flag indicating the current display mode may be stored in the page table 41.
Referring to FIG. 26, the current page that is the fourth page is turned when the fourth page is displayed. Then, the fifth page is displayed. To provide the user with an impression like turning pages of the book, the display area of the page being turned is reduced gradually and the display area of a new page to be displayed next is increased gradually in the example of FIG. 26. This display example involves various patterns, which may be selected in accordance with the display processing ability of the controller for use. For example, if the controller can perform a high speed 3D processing (with the CPU and operating system), the state of turning the paper may be displayed in the three dimensions. Also, the page may be revolved around the tag display area 6 in the tag display direction as a central axis while the data being displayed is transformed in accordance with the turning movement.
In the example of FIG. 26, the motion of turned page is followed by the motion of tag, as indicated by reference numeral 58. That is, the page information display method of this example includes a page turning step of moving the current page in the page turning direction, and displaying a page to be displayed by a tag operation in the information access area, when the tag operation is applied to a tag displayed in the tag display area, and a tag moving step of moving the tag appended to the current page between the one and other tag display areas in the page turning direction along with the movement of the current page, when the current page is moved at the page turning step. Thereby the position of page being moved becomes clear. Also, in the example of displaying the page turning in the three dimensions, the tag shape may be deformed and moved while following the page. For example, if the tag width is made gradually slender, the behavior of the page moving upward with the rotation can be represented.
FIG. 27 is a flowchart showing a process of expanding the tag during the semantic display. First of all, the tag is on the semantic display (step S81). And if there is a pointer event near the tag display area, a tag being displayed is designated near the coordinate at which the pointer event occurs, for example, when a pointer 2A comes closer to the tag display area which is selectively displayed. In an example of FIG. 28, the pointer indicated by reference sign 2A comes closer to a line tag indicating the 48th page among the line tags displayed and designates it. In this case, the lengths of the tag indicating the 48th page and its preceding or succeeding three or five tags are reset to substantially as long as the tag length of current page and displayed (step S84 of expanding the tag). Then, the page information of the 48th page may be stored in the cache memory.
If there is no tag operation (step S85), the tag display is restored after the elapse of a certain time (step S87). On the other hand, if there is any operation on the expanded tag displayed, the processing such as turning the page is performed (step S86). A program for executing the processing as shown in FIG. 27 may have a tag expanding command for resetting the tag length displayed on the basis of the relation between the tag displayed in the tag display area and the coordinate or pressure of the pointer, and a tag length return command for returning the tag length resets to its original length after the elapse of a certain time since the coordinate or pressure of the pointer returns to the steady state.
Referring to FIG. 28, the tag expanding process will be described again. A tag which is located closest to the pointer 2A (tag of the 49th page in FIG. 28) when the distance h between the tag and the input cursor is below a certain distance H1, is drawn at a height inversely proportional to the distance h with a gradually wider interval between tags as the coordinate of an input cursor comes closer to the tag (tag of the 49th page). When the distance between the fingertip coordinate and the tag (tag at the 49th page) is greater than a predetermined distance H2, the change of the interval between tags as shown in FIG. 28 gradually returns to a display state of FIG. 20, after the elapse of a fixed time from exceeding it.
Holding Plural Pages and Tag Display
FIG. 29A is a view illustrating one example of the display format of tag integral type. In the example as shown in FIG. 29A, the turning state display data creating step as designated at step A24 in FIG. 10 comprises a substep of creating the turning state display data having a tag portion along with the current page in the case where the tag is appended to the current page. In the example as shown in FIG. 29A, the display of compression type as shown in FIG. 13A is effected along with a tag 74A appended to the current page. Because of the compression type, the tag width of the tag 74B in which the page is more compressed is narrower than the tag width of the tag 74A.
FIG. 29B is a view illustrating one example of the display format of plural pages integral type. In the example as shown in FIG. 29B, the turning state display data creating step A24 as shown in FIG. 10 comprises a substep of deferring the transformation of each held page until transformation of the current page for each of the pages held in the case where the number of holding pages detected in the page turning operation detecting step is two or greater. In the example as shown in FIG. 29B, the display format of slide type as shown in FIG. 12B is applied for three consecutive pages consisting of a current page 75A displaying the character "A", a next page 75B of the current page displaying the character "B", and a next display page 75C displaying the character "C", wherein the current page 75A and the next page 75B are transformed with a time difference. Thereby, the next page 75B is displayed while the page is being turned, whereby the state of turning plural pages is seen more intuitively by the user. As shown in FIG. 29B, in the case where a tag is appended to each page, the tag may be moved along with each page.
FIG. 30 is a flowchart illustrating one example of a tag display control in accordance with a holding operation according to the fourth embodiment of the invention. Referring to FIG. 30, the page information display method comprises a page holding operation detecting step A31 of outputting a page holding operation detecting signal, when a predetermined page holding operation is performed at a current page read from the electronic information memory 4 that is to be displayed at present, and a before-turning holding object page tag coloring step A42 of coloring a tag for a holding object page that is held by the page holding operation with a different color from other tags in one tag display area that is displaying a tag appended to the current page, when the page holding operation is initially detected in the page holding operation detecting step A31. At this step A42, the tag of the page actually held by the page holding operation is colored, whereby the user can confirm the effect on the number of holding pages by the holding operation due to the pressure or time at a glance. In particular, if the position of the page of interest is roughly grasped from the position of page tag, the coloring of the tag is confirmed while the pressure is being changed minutely, thereby making the operation more correct and simpler.
And the page information display method further comprises a next display page setting step A34 of setting a page having a page number that is equal to the current page added or subtracted by the amount of holding operation to a next display page to be displayed at the next time, when the page holding operation detecting signal is output in the page holding operation detecting step A31, and a page turning process step A35 of displaying the next display page set in this next display page setting step A34 in place of the current page on the display unit.
In the example as shown in FIG. 30, the page information display method further comprises, following the page turning process step A35, an after-turning holding object page tag coloring step A36 of coloring a page tag for the holding object page, for which the page turning process is completed, in the other tag display area where a tag appended to a current page that has become the new current page after the page turning process is not displayed, with a different color from other tags.
The holding operation may be performed not only in the information access area but also on the tag. FIG. 31 is an explanatory view illustrating one example of the holding operation on the tag. As shown in FIG. 31, holding plural pages is effected by applying a predetermined pressure on a tag 76 that has been expanded.
A holding display circle may be displayed on the tag. In the examples as shown in FIGS. 32 and 33, the coloring of tag by the holding operation and the display of the holding display circle on the tag are employed at the same time. Though in the example as shown in FIG. 31, the succeeding pages of the current page, or the pages after the expanded tag are only held, the preceding page can be held if the same operation is performed in the tag display area 6 at the preceding page. That is, the pages 77 held in FIG. 32 are pages before the tag being operated currently. On the other hand, in an example as shown in FIG. 33, the pages 77 held are the pages after the tag being operated currently.
FIG. 34 is a flowchart illustrating one example of the tag display when an operation of turning plural pages collectively is performed. In the example as shown in FIG. 34, the page information display method comprises a current page tag height calculating step A41 of calculating a display height of the current page tag on the basis of the position of the current page with respect to the total number of pages for the electronic information stored in the storage unit 4, a succeeding page tag display format designating step A42 of designating a display format of the succeeding page tags on the basis of the tag height of the current page tag calculated in the current page tag height calculating step and the total number of succeeding pages, and a preceding page tag display format designating step A43 of designating a display format of the preceding page tags on the basis of the tag height of the current page tag and the total number of preceding pages before or after the succeeding page tag display format designating step.
Each of the display format designating steps A42, A43 may designate the display format in accordance with the tag display method as described in the fourth embodiment. That is, giving the highest priority to a position of the current page tag height, the display format is determined depending on the number of residual pages at this position.
And the page information display method further comprises a page holding operation detecting step A44 of outputting a page holding operation detecting signal, when a predetermined page holding operation is performed at the current page, a next display page setting step A45 of setting a page having a page number that is equal to the current page added or subtracted by the amount of holding operation to a next display page to be displayed at the next time, when the page holding operation detecting signal is output in the page holding operation detecting step A44, and page turning process steps A46 to A49 of displaying the next display page set in the next display page setting step in place of the current page on the display unit.
And in this page turning process step, first of all, a page turning process is started (step S46). Subsequently, the display control of the holding object page tag is made (step A47). This display control step of the holding object page tag comprises displaying the tags appended to the current page that is to be turned and the holding object pages that are held by the holding operation in the display format in accordance with the page turning direction specified in the preceding page tag display format designating step A42 or the succeeding page tag display format designating step A43 in the information access area, while following the transformation or movement of the current page in the current page turning step. Subsequently, the page turning step is made (step A48). Further, the display control step A47 of the holding object page tag is repeated until the page turning process is completed (step A49).
As shown in FIG. 35A, if the turning of plural pages is executed in a state where the page tag is expanded, a part for holding plural pages and the previous page indicated by the fingertip involving the current page (i.e., the paper face) are turned collectively. At this time, in a process example as shown in FIG. 34, the tag display of a part indicated by reference numeral 79 in FIG. 35 is effected in accordance with the display format in the tag display area 6 for displaying the tag of the previous page in a state where the drawing is inverted in a tag width direction. That is, when the execution of the page turning process is started, the next display page is treated as the current page, and the tag height is recalculated to redisplay the tag in the tag display area for the succeeding page. And the tags appended to the pages from the current page being moved by the page turning process to the last page of the holding object pages are displayed in accordance with the display format for the previous page, while following the movement of the page turning process.
Also, in the example as shown in FIG. 35, the page information display method further comprises, following the page holding operation detecting step A44, a before-turning holding object page tag coloring step of coloring a tag for a holding object page that is held by the page holding operation with a different color from other tags in one tag display area that is displaying a tag appended to the current page, when the page holding operation is initially detected in the page holding operation detecting step A44. For example, in the case where a pressure circle according to the third embodiment is displayed within the access area 5, the coloring of tags for the held pages are changed, because it is considered that the number of holding pages may not be grasped by simply referring to the pressure circle.
FIG. 36 is an explanatory view for highlighting the tag display in the information access area in the process of turning plural pages collectively as shown in FIG. 34. In an example as shown in FIG. 36, the holding object page tag display control step A47 comprises a substep of setting the tags appended to the current page that becomes the turning process object and the holding object pages held in the holding operation in a display format of equal and close interval between tags. As indicated by reference numeral 79B in FIG. 36, the tags are set in the display format in which the interval between tags is close and equal, the position of the current page after being turned can be clarified promptly while the state of turning plural pages collectively is displayed excellently.
FIG. 37 is an explanatory view illustrating a tag display example after completion of turning plural page collectively. In this example as shown in FIG. 37, the page information display method further comprises, following the page turning process step A49, an after-turning holding object page tag coloring step of coloring a page tag for the holding object page, for which the page turning process is completed, in the other tag display area where a tag appended to a current page that has become the new current page after the page turning process is not displayed, with a different color from other tags. Owing to the provision of this after-turning holding object page tag coloring step, the original position of page is apparently seen in the case where plural pages are turned collectively, and particularly as the position is visually memorized, the original page is easily restored after turning pages with the holding operation.
FIG. 38 |
