| 5999622 |
Method and apparatus for protecting widely distributed digital information |
| Dec-7-1999 |
To facilitate protected distribution of digital data files, the files are segmented, and each segment (e.g. disk sector) is encrypted separately. Some segments can be left unencrypted, speeding access... |
| 5995625 |
Electronic cryptographic packing |
| Nov-30-1999 |
A method of unwrapping wrapped digital data that is unusable while wrapped, includes obtaining an acceptance phrase from a user; deriving a cryptographic key from the acceptance phrase; and unwrapping... |
| 5995623 |
Information processing apparatus with a software protecting function |
| Nov-30-1999 |
The present invention provides an information processing apparatus which comprises separating means for separating inputted data into identification data and data to be encrypted, determination means for... |
| 5991402 |
Method and system of dynamic transformation of encrypted material |
| Nov-23-1999 |
The present invention provides a method and system that enables software-on-demand and software subscription services based on a dynamic transformation filter technology. The invention is also useful in... |
| 5991400 |
Time-shifted conditional access |
| Nov-23-1999 |
In a conditional access system, transmitted information is recorded in a scrambled form SV. Accordingly, any access to the recorded information SV is subject to the condition that proper control word(s)... |
| 5991404 |
System for diversifying information in a network for distributing goods or services |
| Nov-23-1999 |
A system for diversifying information carried by a network to apparatuses for providing goods or services. The network includes a plurality of platforms each capable of creating messages including diversification... |
| 5991399 |
Method for securely distributing a conditional use private key to a trusted entity on a remote system |
| Nov-23-1999 |
Secure distribution of a private key to a user's application program (also called a "trusted player" such as a DVD player or CD-ROM player) with conditional access based on verification of the trusted... |
| 5982892 |
System and method for remote authorization for unlocking electronic data |
| Nov-9-1999 |
A system and method for controlling unauthorized access to software distributed to a user by a vendor in which a verification key is generated by a product key generator and either embedded in the software... |
| 5982887 |
Encrypted program executing apparatus |
| Nov-9-1999 |
An encrypted part of the encrypted program loaded in an memory device is received by a one-chip microcomputer and decrypted according to a decrypting program which is stored in advance in an ROM and which... |
| 5978482 |
Method and system for protection of digital information |
| Nov-2-1999 |
An information processing system including an encryption processing logic module and a decryption processing logic module for enabling the encryption of digital information to be decrypted with a decryption... |
| 5978476 |
Access restriction to circuit designs |
| Nov-2-1999 |
A computerized system restricts full revelation of certain information to a user, while also performing limited processing of the information for the user for evaluation. The information is encrypted and... |
| 5970150 |
System for producing verifiable kiosk receipts and records |
| Oct-19-1999 |
A postage meter that is contained in a kiosk may be used to produce verifiable receipts for commercial transactions. The imbedded digital metering cryptographic technology that is contained in a postage... |
| 5969283 |
Music organizer and entertainment center |
| Oct-19-1999 |
A music organizer and entertainment center provides a center having a microprocessor, sound card functions and high-volume data storage and retrieval units for playing back music according to a variety... |
| 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... |
| 5953416 |
Data processing apparatus |
| Sep-14-1999 |
A data processing apparatus serves as I/O units coupled to information processes apparatuses such as computers. The data processing apparatus decodes encrypted data and performs processing according to... |
| 5953415 |
Fingerprinting plain text information |
| Sep-14-1999 |
A system for enhancing security of electronic documents distribution wherein electronic documents are fingerprinted with one or more modifications to the document text. The text modifications may be selected... |
| 5953005 |
System and method for on-line multimedia access |
| Sep-14-1999 |
A method and system for providing access to multimedia content on-line which is updated virtually simultaneously with the vendor's update process. By a user accessing a page on the World Wide Web, for... |
| 5951633 |
System and method for overflow resource allocation |
| Sep-14-1999 |
A system and method for allowing use of an overflow resource on a temporary basis to supplement a standard resource that is engaged, and thus allows the system to satisfy a resource access request that... |
| 5949885 |
Method for protecting content using watermarking |
| Sep-7-1999 |
A watermarking procedure wherein each of a set of copies of the work has a slightly-modified form of a "baseline" watermark that is placed within a critical region of the data. The slight variations in... |
| 5949877 |
Content protection for transmission systems |
| Sep-7-1999 |
A method for protecting digital content from copying and/or other misuse as it is transferred between devices over insecure links, includes authenticating that both a content source and a content sink... |
| 5940505 |
Information recording method and apparatus, function recording method and apparatus, and information reproducing method and apparatus |
| Aug-17-1999 |
A record signal corresponding to record information to be recorded to a record medium is scrambled, and the scrambled record signal is recorded to the record medium. The information recording method is... |
| 5920628 |
Method and apparatus for fingerprinting and authenticating various magnetic media |
| Jul-6-1999 |
A method and apparatus are disclosed for determining the remanent noise in a magnetic medium by, for example, dc saturation of a region thereof and measurement of the remaining dc magnetization. A conventional... |
| 5917914 |
DVD data descrambler for host interface and MPEG interface |
| Jun-29-1999 |
A descrambler for a Digital Versatile Disk (DVD) is provided within a DVD controller to allow for real-time descrambling of DVD data from the DVD buffer. The built-in descrambler also allows the controller... |
| 5915025 |
Data processing apparatus with software protecting functions |
| Jun-22-1999 |
A data processing apparatus with software protecting functions capable of enhancing the level of encryption security independently of the memory management method of the system comprising the apparatus.... |
| 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.... |
| 5903646 |
Access control system for litigation document production |
| May-11-1999 |
An access control system for litigation document production. Documents are produced as stored images on an optical disk. Documents which are to be redacted or maintained confidential are stored in encrypted... |
| 5894516 |
Broadcast software distribution |
| Apr-13-1999 |
A method, apparatus, and article of manufacture for broadcasting encrypted software to a target computer enables simultaneous transmission to a plurality of licensed target computers. An encryption key... |
| 5893132 |
Method and system for encoding a book for reading using an electronic book |
| Apr-6-1999 |
A method and system for encoding a book for reading by an electronic book having an internal machine-readable dictionary includes receiving data representative of text and graphical information of the... |
| 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... |
| 5889860 |
Encryption system with transaction coded decryption key |
| Mar-30-1999 |
The encryption secured computer system (10) includes a server (12) that communicates with clients (14-20) across a public network (21) using a novel transaction coded decryption key technology that discourages... |
| 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... |
| 5872850 |
System for enabling information marketplace |
| Feb-16-1999 |
A system for enabling an information marketplace includes a central server which stores data in a memory element. The data may or may not be encrypted. Regardless of whether the data is encrypted the server... |
| 5857191 |
Web application server with secure common gateway interface |
| Jan-5-1999 |
A web browser communicates through a secure local proxy to a web server that has an interface for secure communications. The application server has an application program conforming to the CGI programming... |
| 5852664 |
Decode access control for encoded multimedia signals |
| Dec-22-1998 |
Multimedia signals are encoded with certain values to control a user's access to the decoding of the multimedia signals. In a preferred embodiment in which the multimedia signals contain video signals,... |
| 5848154 |
Apparatus for managing software using quantity |
| Dec-8-1998 |
A DES decrypting unit decrypts video data frames encrypted and compressed based on MPEG standards, when receiving them. The decrypted video data frames are expanded one by one in a MPEG expansion circuit.... |
| 5845070 |
Security system for internet provider transaction |
| Dec-1-1998 |
This invention provides security controls against exposing Confidential Information that is required to purchase goods and services from Internet Entity 56 offered on a home page site. The Confidential... |
| 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... |
| 5832083 |
Method and device for utilizing data content |
| Nov-3-1998 |
The present invention provides a data content utilizing device having data storing section for storing information obtained by encoding data contents and content identification information specifying the... |
| 5822291 |
Mass storage element and drive unit therefor |
| Oct-13-1998 |
A mass storage drive removably supports a mass storage element and includes a data head having an output for reading tracks of main data elements. The data head, which can be an optical head, is movable... |
| 5805712 |
Apparatus and method for providing secured communications |
| Sep-8-1998 |
A semiconductor device used to store encryption/decryption keys at manufacture in combination with digital certificates to ensure secured communications between the semiconductor device and another device.... |
| 5799090 |
pad encryption method and software |
| Aug-25-1998 |
A pad encryption software architecture includes space on a floppy for storing the pad to be used with the encryption software. The pad is XOR generated with random numbers subject to redetermined offsets.... |
| 5796840 |
Apparatus and method for providing secured communications |
| Aug-18-1998 |
A method of producing a hardware agent being a single integrated circuit encapsulated within a semiconductor device package. The method comprises the steps of generating a device-specific key pair internally... |
| 5796839 |
Encryption method, encryption apparatus, recording method, decoding method, decoding apparatus and recording medium |
| Aug-18-1998 |
There are provided an encryption method, an encryption apparatus, a recording method, a decoding method, a decoding apparatus and a recording medium in which encryption keys can be managed with ease by... |
| 5796824 |
Storage medium for preventing an irregular use by a third party |
| Aug-18-1998 |
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... |
| 5790665 |
Anonymous information retrieval system (ARS) |
| Aug-4-1998 |
An information retrieval system in which data is retrieved anonymously by a user with the assistance of one or more trusted agents. |
| 5787171 |
Data transmitter and receiver |
| Jul-28-1998 |
A data transmitter capable of preventing illegal free reception of transmitted data by scrambling the same, and a data receiver adapted to descramble the received data properly despite any alteration of... |
| 5784460 |
Secured electronic information delivery system having a three-tier structure |
| Jul-21-1998 |
A system is provided for retrieving a selected one of a plurality of encrypted software products stored in at least one storage device, such as a CD-ROM. Each software product is decryptable by a unique... |
| 5784461 |
Security system for controlling access to images and image related services |
| Jul-21-1998 |
A secure method for granting customer access to images and image related services at an image fulfillment center, includes the steps of: scanning a customer film image to generating high and low resolution... |
