| 5778421 |
Information processing system which can check disk-like storage medium having prescribed relation therewith and disk-like storage medium therefor |
| Jul-7-1998 |
This is invention provides an information processing system for a disk-like storage medium such as flexible magnetic disks or a DVD-RAMs. The disk-like storage medium stores a first data including at least... |
| 5771347 |
Apparatus and method to allow a user a trial period before licensing a software program product |
| Jun-23-1998 |
A method is provided to permit copies of software products to be installed on systems, with a predetermined delay before commencement of a designated test period. The predetermined delay provides for a... |
| 5758257 |
System and method for scheduling broadcast of and access to video programs and other data using customer profiles |
| May-26-1998 |
A system and method for scheduling the receipt of desired movies and other forms of data from a network which simultaneously distributes many sources of such data to many customers, as in a cable television... |
| 5757922 |
Method and system for packet scrambling communication with reduced processing overhead |
| May-26-1998 |
A packet scrambling communication scheme capable of reducing the processing amount and the processing time required for the scrambling processing and the descrambling processing at the transmitting side... |
| 5757908 |
Method and apparatus for enabling trial period use of software products: method and apparatus for utilizing an encryption header |
| May-26-1998 |
A method and apparatus is provided in a data processing system for securing access to particular files which are stored in a computer-accessible memory media. A file management program is provided as an... |
| 5754647 |
Software protection apparatus and the method of protection utilizing read-write memory means having inconsistent input and output data |
| May-19-1998 |
An apparatus and method for software protection utilizing a read-write memory device having output data that is inconsistent with the corresponding input data. An emulator detector monitors address inputs... |
| 5751806 |
Audio information dissemination using various transmission modes |
| May-12-1998 |
A system and method of information dissemination that permits the user to listen to the specific content of information when and where he or she wants to. A radio or television receiver system receives... |
| 5745678 |
Method and system for the secured distribution of multimedia titles |
| Apr-28-1998 |
A method and system for detecting authorized programs within a data processing system. The present invention creates a validation structure for validating a program. The validation structure is embedded... |
| 5737424 |
Method and system for secure distribution of protected data using elliptic curve systems |
| Apr-7-1998 |
A method and system for secure distribution of protected data using elliptic curve systems includes a program to unlock software. The user obtains an encrypted unlocking code from a processing center and... |
| 5734719 |
Digital information accessing, delivery and production system |
| Mar-31-1998 |
A digital data on-demand turnkey system at a customer premise wherein N number of sewers provide for 100% of content distribution of remotely stored digitized information, which information may be previewed... |
| 5724427 |
Method and apparatus for autokey rotor encryption |
| Mar-3-1998 |
A method an apparatus for block or stream encrypting text uses an autokeyed rotational state vector to encrypt plain text to yield cipher text. The text is stored as a block in a buffer of an arbitrary... |
| 5715448 |
Open database system wherein access by subscribers to a network is limited |
| Feb-3-1998 |
Data of textiles for various types of items offered by a different textile company stored in an integrated database (DR) of a data service company item by item, and data of business results relating to... |
| 5703951 |
System and method for access data control |
| Dec-30-1997 |
The system and method of the present invention provides the support of high density removable media, such as CD-ROM or MO, to be used as a distributed media for storing data where access thereto is securely... |
| 5701343 |
Method and system for digital information protection |
| Dec-23-1997 |
A digital information protection scheme using an improved security protocol. In a system in which a user makes an access to a digital information provided by an information center by connecting a computer... |
| 5694469 |
Method and system for disseminating stored programs and data |
| Dec-2-1997 |
A method for accessing a selected group of data which is stored on a machine readable storage medium, which method includes: assigning a first identifying designation to the storage medium; assigning a... |
| 5689560 |
Method and apparatus for enabling trial period use of software products: method and apparatus for allowing a try-and-buy user interaction |
| Nov-18-1997 |
A method and apparatus is provided for distributing software objects from a producer to a potential user. The software object is reversibly functionally limited, preferably through encryption, and loaded... |
| 5677953 |
System and method for access control for portable data storage media |
| Oct-14-1997 |
The system and method of the present invention provides the support of high density removable media, such as CD-ROM or MO, to be used as a distributed media for storing data where access thereto is securely... |
| 5673316 |
Creation and distribution of cryptographic envelope |
| Sep-30-1997 |
A method and apparatus to create, distribute, sell and control access to digital documents using secure cryptographic envelopes. An envelope is an aggregation of information parts, where each of the parts... |
| 5668945 |
Data security apparatus and method |
| Sep-16-1997 |
A data security apparatus and method permits programmed data stored in a replaceable external storage medium to be processed by the data processor when it is determined that a security code is stored on... |
| 5666411 |
System for computer software protection |
| Sep-9-1997 |
This system protects proprietary software from disclosure and unauthorized use, enforces license limits on number of users of the software, and prevents corruption of protected software by computer viruses.... |
| 5655021 |
Method for checking data sequences |
| Aug-5-1997 |
The invention relates to a method for checking data sequences, comprising a protection step and a verification step, with a control sequence being formed in the protection step on the basis of an identification... |
| 5652868 |
Data processor having BIOS decryption of emulated media images |
| Jul-29-1997 |
Multiple applications or versions of an application in different languages are distributed on a single mass storage medium, such as a CD-ROM. The BIOS is programmed to emulate different drives individually... |
| 5651066 |
Cipher key distribution system effectively preventing illegitimate use and charging of enciphered information |
| Jul-22-1997 |
A method and a system for cipher key distribution realizing an effective prevention of the illegitimate use and the illegitimate charging. A key request signal containing a first random number generated... |
| 5651064 |
System for preventing piracy of recorded media |
| Jul-22-1997 |
A system for preventing unauthorized copying of recorded information has a number of independently identifiable storage media holding the information in encrypted form and a number of drives for the storage... |
| 5640453 |
Universal interactive set-top controller for downloading and playback of information and entertainment services |
| Jun-17-1997 |
A universal interactive control system for the downloading and playback of information and entertainment services from one or more network distribution centers, said one or more network distribution centers... |
| 5638446 |
Method for the secure distribution of electronic files in a distributed environment |
| Jun-10-1997 |
A process for using a trusted third party to create an electronic certificate for an electronic file that can be used to establish the file and verify the identity of the creator of the file. The process... |
| 5627895 |
Electronic device for detecting selected visually perceptible indication information on an information storage medium for security comparison |
| May-6-1997 |
The electronic device, such as the game device, which can reduce a reading time of reading visually recognizable indication information formed in a CD-ROM, and which can ensure the security and effectively... |
| 5615261 |
Method and apparatus for detecting illicit RF data transmissions |
| Mar-25-1997 |
Detection of illicit radio frequency (RF) data transmissions is accomplished by employing an RF security monitor (120) positioned within the transmission range of a wireless communication system (101).... |
| 5598470 |
Method and apparatus for enabling trial period use of software products: Method and apparatus for utilizing a decryption block |
| Jan-28-1997 |
A method and apparatus is provided in a data processing system for securing access to particular files which are stored in a computer-accessible memory media. A file management program is provided as an... |
| 5590195 |
Information dissemination using various transmission modes |
| Dec-31-1996 |
A system and method of information dissemination that permits the user to listen to the specific content of information when and where he or she wants to. A radio or television receiver system receives... |
| 5590192 |
Smart disk software protection system |
| Dec-31-1996 |
A floppy disk, having a microprocessor and battery power supply, a magnetic field sensor, and an on switch on the central hub. A plurality of magnetic fields are placed on the disk housing, in a circular... |
| 5586186 |
Method and system for controlling unauthorized access to information distributed to users |
| Dec-17-1996 |
A system for controlling unauthorized access to information distributed to users and, more particularly, for controlling unauthorized access to software distributed to users is provided. One method utilizing... |
| 5564038 |
Method and apparatus for providing a trial period for a software license product using a date stamp and designated test period |
| Oct-8-1996 |
A method is provided to permit copies of software products to be installed on systems, with a predetermined delay before commencement of a designated test period. The predetermined delay provides for a... |
| 5563947 |
CD-PROM |
| Oct-8-1996 |
Encrypted data on a CD-PROM disk is managed by selectively encoding binary digital decryption keys onto the same disk in a separate data area. A decryption key or keys may be programmed onto the disk after... |
| 5557677 |
Method and arrangement for communication of information |
| Sep-17-1996 |
In a transmitter, information for transmission is received in the form of a digital signal, electrical or optical, which is converted into short signal fragments, each of which is assigned an index. A... |
| 5555308 |
Encryption of signals to insure viewership of commercials |
| Sep-10-1996 |
A system for distributing data to attract consumers to a commercial message provides for the delivery of free data to the consumer. The commercial message includes instructions in the form of a code, which... |
| 5555304 |
Storage medium for preventing an illegal use by a third party |
| Sep-10-1996 |
A storage medium stores encrypted electronic data, a medium personal number which is unique for each storage medium and encrypted permission information. At least the medium personal number is written... |
| 5528490 |
Electronic catalog system and method |
| Jun-18-1996 |
An electronic catalog system and apparatus is provided for producing information related to a selected product on a remote computer. The system and method performs the steps of storing and maintaining... |
| 5524051 |
Method and system for audio information dissemination using various modes of transmission |
| Jun-4-1996 |
A system and method of information dissemination that permits the user to listen to the specific content of information when and where he or she wants to. A radio or television receiver system receives... |
| 5513169 |
CD-ROM with machine-readable i.d. code |
| Apr-30-1996 |
A machine-readable serial number is formed on a CD-ROM by using a laser to selectively remove a reflective layer from the CD-ROM, Removal of the reflective layer creates defects in addressable information... |
| 5509074 |
Method of protecting electronically published materials using cryptographic protocols |
| Apr-16-1996 |
A method for protecting electronically published documents involves operating a computer system and network for electronic publication of documents, and includes the steps of receiving requests for documents... |
| 5506902 |
Data broadcasting system |
| Apr-9-1996 |
A data broadcasting system for the low-cost delivery of character-heavy data such as newspapers and magazines. Newspaper or other data are transmitted from a newspaper publisher or service to an artificial... |
| 5491751 |
Intelligent accompaniment apparatus and method |
| Feb-13-1996 |
A system for interpreting the requests and performance of an instrumental soloist, stated in the parlance of the musician and within the context of a specific published edition of music the soloist is... |
| 5488410 |
System and method for disk software publishers to control disk distribution |
| Jan-30-1996 |
A system for allowing software publishers to control which video standard(s) can be recovered from an optical disk containing video source material. The disk may be digitally encoded so that any of NTSC,... |
| 5479512 |
Method and apparatus for performing concryption |
| Dec-26-1995 |
A method and apparatus for the integrated compression and encryption (concryption) of clear data and for the deconcryption of concrypted data to obtain the clear data for utilization. For concryption,... |
| 5473688 |
Auditing system for single play tape cassette |
| Dec-5-1995 |
A tape cassette or the like employs a resettable counter that disables the playing of the cassette after a limited number of playings consistent with home use. The small number of playings is supported... |
| 5473687 |
Method for retrieving secure information from a database |
| Dec-5-1995 |
A system for retrieving a packet of informational digital data which is stored on a secure storage medium. The informational data packet (IDP) is read from the secure storage medium and then expanded in... |
| 5457746 |
System and method for access control for portable data storage media |
| Oct-10-1995 |
The system and method of the present invention provides the support of high density removable media, such as CD-ROM or MO, to be used as a distributed media for storing data where access thereto is securely... |
| 5450489 |
System and method for authenticating software carriers |
| Sep-12-1995 |
A disk player that will play only authorized disks. Predetermined data blocks, including those in the lead-in section of the disk which contain content-related data, are processed to derive an authorization... |
| 5428685 |
IC memory card and method of protecting data therein |
| Jun-27-1995 |
A method of protecting data in an IC memory card (11) having a ROM area (11a) and a RAM area (11b) and used as an external storage medium of a computer system includes storing key data for preventing copying... |
