| 5968175 |
Software use method control system |
| Oct-19-1999 |
A software use method control system including a storage device and an access controller. The storage device stores information for designating a right to access system resources of operating systems which... |
| 5966440 |
System and method for transmitting desired digital video or digital audio signals |
| Oct-12-1999 |
A method for transferring desired digital video or audio signals. The method comprises the steps of forming a connection through telecommunications lines between a first memory of a first party and a second... |
| 5963909 |
Multi-media copy management system |
| Oct-5-1999 |
Reproduction of a multi-media data signal which is stored on a source media or distributed via a communication network is controlled by inserting master tag data and control tag data into the data signal.... |
| 5953533 |
Computer software distribution, installation and maintenance method and apparatus |
| Sep-14-1999 |
A computer software installation, distribution and maintenance method that manufactures one or more software products on an end user's target computer system. The method operates by generating a set of... |
| 5930367 |
Apparatus for recording/reproducing or transmitting/receiving signal data having a portion of an error correction code replaced with other information and methods thereof |
| Jul-27-1999 |
An apparatus for processing digital data signals which may be used in recording/reproducing and transmitting/receiving of such signals. During recording or transmission, error correction codes are added... |
| 5923754 |
Copy protection for recorded media |
| Jul-13-1999 |
A method and apparatus for securely transferring an encrypted-data key and a medium key, from a media storage such as a DVD disk to an output device in a computer system, using a randomly generated first... |
| 5917910 |
Encrypting method and apparatus, recording method, decrypting method and apparatus, and recording medium |
| Jun-29-1999 |
When information to be recorded is encrypted by using an encryption key, an encryption key based on inherent information inherent in a recording medium is generated. The information to be recorded on the... |
| 5917619 |
Image forming apparatus |
| Jun-29-1999 |
The present invention provides a color tone detection sensor for detecting the tone of a color actually printed, a color conversion processing section for executing color conversion to inputted image data,... |
| 5915018 |
Key management system for DVD copyright management |
| Jun-22-1999 |
A cryptographic system and method for secure distribution and management of cryptographic keys for use in a DVD copy protection scheme is disclosed. A DVD disc having compressed, encrypted content written... |
| 5912969 |
Information receiving and recording/reproducing apparatus/method having function for limiting/delimiting for protecting copyright of recording information |
| Jun-15-1999 |
An apparatus comprising a transmission system for transmitting an information signal, and a reception system including an information receiving unit for receiving the information signal, and an information... |
| 5907443 |
Recording and reproducing apparatus adapted to selectively control the number of copies made |
| May-25-1999 |
A recording and reproducing apparatus comprising a reproducing member for reproducing number-of-times-of-copy information and possible-number-of-times-of-copy information recorded on a recording medium,... |
| 5905798 |
TIRIS based kernal for protection of "copyrighted" program material |
| May-18-1999 |
The invention consists of attaching or embedding a "TIRIS" transponder (or other RF or IR or barcode or other identifying device) physically into the center of the proposed DVD disk. Within the memory... |
| 5905797 |
Interactive compact disc system |
| May-18-1999 |
A system for controlling the playing of rented compact discs on an end-user's compact disc player. The end-user obtains a validation disc on which is stored a control program and an expiry date. When the... |
| 5903647 |
Self-launching encrypted digital information distribution system |
| May-11-1999 |
A computer-based self-launching system associated with a software program or other digital information is provided for distributing the software program or other digital information to a potential purchaser.... |
| 5901224 |
Quasi-reprographics with variable embedded data with applications to copyright management, and distribution control |
| May-4-1999 |
A method and apparatus for quasi-reprographically replicating a source document. The source document is digitized, appropriate locations for embedded code are detected, and any embedded code located in... |
| 5896454 |
System and method for controlling copying and playing of digital programs |
| Apr-20-1999 |
A system and method for preventing effective copying of digital recordings. A copy-state code accompanies each recording, one state of which represents that no copies at all are to be made of the recording.... |
| 5892825 |
Method of secure server control of local media via a trigger through a network for instant local access of encrypted data on local media |
| Apr-6-1999 |
A method of triggering video imaging and/or audio data on a "HyperCD" (CD-ROM) via a trigger through a network for instant local access of encrypted data on local media. The CD-ROM contains video/audio... |
| 5887060 |
Central database system for automatic software program sales |
| Mar-23-1999 |
A computer-based system is provided for automatic sales of software programs. The system accesses a software program within a computer database and maintains the software program in a locked state in order... |
| 5883958 |
Method and device for data decryption, a method and device for device identification, a recording medium, a method of disk production, and a method and apparatus for disk recording |
| Mar-16-1999 |
A video disk playback apparatus includes a disk driver which retrieves video data and a key data table from a digital video disk, and a decoder board which has its own ID. The disk driver receives the... |
| 5883957 |
Methods and apparatus for encrypting and decrypting MIDI files |
| Mar-16-1999 |
Techniques for playing and distributing MIDI tracks in the context of a non-real-time network such as the Internet. One of the techniques makes it possible to begin playing a multi-track MIDI file that... |
| 5883955 |
On-line try before you buy software distribution system |
| Mar-16-1999 |
A computer-based on-line system is provided for demonstrating software programs to a potential purchaser. The system receives from an on-line system a software program to be demonstrated, and maintains... |
| 5883954 |
Self-launching encrypted try before you buy software distribution system |
| Mar-16-1999 |
A computer-based self-launching system associated with a software program is provided for demonstrating the software program to a potential purchaser of the program. The self-launching system is attached... |
| 5881287 |
Method and apparatus for copy protection of images in a computer system |
| Mar-9-1999 |
A method and apparatus for securing images from unlicensed appropriation on a computer system. Prior art graphics security measures, such as encryption, cease to protect the images once the images are... |
| 5870467 |
Method and apparatus for data input/output management suitable for protection of electronic writing data |
| Feb-9-1999 |
A data input/output management scheme suitable for protection of electronic writing data. Whether the data entered into the program is a protected data or not is judged, and when it is, at least the identifier... |
| 5867579 |
Apparatus for data copyright management system |
| Feb-2-1999 |
A data copyright management apparatus for handling data copyrights, and data of digital cash and video conference system is provided. The data copyright management apparatus comprises a CPU, ROM, EEPROM,... |
| 5848158 |
Data copyright management system |
| Dec-8-1998 |
A data copyright management system is provided, in which a primary user edits a received data and supplies the edited data to a secondary user. The copyright management system comprises a database and... |
| 5841861 |
Optical recording medium and reproducing apparatus for optical recording medium |
| Nov-24-1998 |
An optical recording medium has a plurality of layers of recorded information including at least digital data of picture, music, or computer software in a form of recorded marks or pits readable by optical... |
| 5835595 |
Method and apparatus for crytographically protecting data |
| Nov-10-1998 |
A method and apparatus for transferring encrypted information to a database. First certification information is transferred from a first database to a second database. Second certification information... |
| 5835589 |
Optical recording medium to store and access large volumes of data |
| Nov-10-1998 |
When recording a large volume of data such as video data, audio data, or the like, it is desirable to delete menus for unnecessary files and thereby enable quick and efficient access to data. An optical... |
| 5832088 |
Method and apparatus for preventing data copying from a disk using data lengths too large for a pirate medium |
| Nov-3-1998 |
Recording data is recorded on a CD-ROM so as to satisfy a relationship expressed as W.gtoreq.D and W>m where W is the data length of recording data recorded on the CD-ROM, D is the data length of effective... |
| 5828754 |
Method of inhibiting copying of digital data |
| Oct-27-1998 |
A method of inhibiting copying of digital data. In a first embodiment, a sequence of symbols is added to original data, the sequence of symbols selected to encode into channel bits having a large accumulated... |
| 5818933 |
Copyright control system |
| Oct-6-1998 |
A copyright control system for performing access control to copyright digital information. The copyright control system is equipped with an encryption/decryption hardware 11 which accepts encrypted copyright... |
| 5805551 |
Method and apparatus for preventing illegal copy or illegal installation of information of optical recording medium |
| Sep-8-1998 |
A recording and reproducing system for performing the reproduction using an optical recording medium. A physical feature of a ROM type disk is extracted and enciphered before being recorded in an optical... |
| 5799081 |
Illegal view/copy protection method and apparatus for digital broadcasting system |
| Aug-25-1998 |
An illegal view/copy protection method for a digital broadcasting system is disclosed including an audio/video signal transmission step for multiplexing and transmitting audio/video bit stream scrambled... |
| 5796828 |
Controlled-access broadcast signal receiving system |
| Aug-18-1998 |
An apparatus and method for transferring from a broadcaster to a receiver a limited reproduction right in data. A signal indicating the limited reproduction right is transmitted by the broadcaster and... |
| 5796826 |
Apparatus for limiting reproducible number of magnetic recording medium |
| Aug-18-1998 |
A reproducible number limiting apparatus for a magnetic recording medium using a reproducible number limiting algorithm is disclosed including: scrambling means for scrambling an input bit stream using... |
| 5778064 |
Apparatus and method for processing a high definition video signal |
| Jul-7-1998 |
Digital video tape recorder which reproduces from a record medium a digital high definition video signal having copy-prevention data therein, extracts the copy-prevention data from the reproduced signal,... |
| 5761302 |
Copy prevention method and apparatus for digital video system |
| Jun-2-1998 |
A copy prevention method and apparatus for a digital video system is disclosed including the steps of: (a) adding a header area of a header start code and key field to a reproduced bit stream; (b) decrypting... |
| 5761301 |
Mark forming apparatus, method of forming laser mark on optical disk, reproducing apparatus, optical disk and method of producing optical disk |
| Jun-2-1998 |
An object of the present invention is to provide a marking forming apparatus, a method of forming a laser marking on an optical disk, a reproduction apparatus, an optical disk, and a method of manufacturing... |
| 5757910 |
Apparatus for preventing illegal copying of a digital broadcasting signal |
| May-26-1998 |
An apparatus for preventing illegal copying of a digital broadcasting signal, comprises a transmission section for generating a copy prevention signal to determine a display time of each field of a digital... |
| 5757909 |
Illegal view and copy protection method in digital video system and controlling method thereof |
| May-26-1998 |
Illegal view and copy protection method in a digital video system for preventing an illegal user from viewing the digital video system and copying therefrom, by setting a descrambling method which decrypts... |
| 5754649 |
Video media security and tracking system |
| May-19-1998 |
A video disc designed for providing security and tracking data in the rental video media market. Those new formats for video players and media allow for inclusion of security features which both allow... |
| 5754648 |
Video media security and tracking system |
| May-19-1998 |
A system for providing security and tracking data for rental video media, including digital video discs and digital video cassettes. Those new formats for video players and media allow for inclusion of... |
| 5754646 |
Method for protecting publicly distributed software |
| May-19-1998 |
A system for protecting software from copying wherein the software to be protected is placed on the computer system in two parts. A first part is stored in non-volatile storage, such as a hard disk or... |
| 5751671 |
Information recording media and optical disk, disk having specific data so that a visible pattern of characters or graphics appear on a copy disk |
| May-12-1998 |
A character and/or graphics pattern area for recording specific data is provided on a CD-ROM. When an original disk is prepared, a specific pit pattern corresponding to the specific data is recorded at... |
| 5748731 |
Electronic trading cards |
| May-5-1998 |
Electronic trading cards are composed of a plurality of individual trading card files encoded on a single data storage device such as a computer diskette or laser disk, each with an associated deciphering... |
| 5737415 |
Data management module, data reproduction management device and data reproduction management system |
| Apr-7-1998 |
The present invention was developed in order to provide a software management module incorporated in hardware or freely attachably/detachably set therein for encrypted software data to be obtained from... |
| 5719937 |
Multi-media copy management system |
| Feb-17-1998 |
Reproduction of a data signal which is stored on a source media or distributed via a communication network is controlled by inserting master tag data and control tag data into the data signal. A player/recorder... |
| 5715403 |
System for controlling the distribution and use of digital works having attached usage rights where the usage rights are defined by a usage rights grammar |
| Feb-3-1998 |
A system for controlling use and distribution of digital works. The present invention allows the owner of a digital work to attach usage rights to their work. The usage rights define how the individual... |
| 5699434 |
Method of inhibiting copying of digital data |
| Dec-16-1997 |
A method of inhibiting copying of digital data. In a first embodiment, a sequence of symbols is added to original data, the sequence of symbols selected to encode into channel bits having a large accumulated... |
