| 7023996 |
Encryption for asymmetric data links |
| Apr-4-2006 |
A method is provided for asymmetrically encrypting data communicated between a ground platform and multiple airborne platforms. The method includes packet encrypting ground-based data so as to preserve... |
| 7007165 |
Watermark system |
| Feb-28-2006 |
A method for examining an electronic representation of an item for a watermark, the method including examining at least a first electronic representation of an item for a watermark in accordance with a... |
| 7006631 |
Method and system for embedding binary data sequences into video bitstreams |
| Feb-28-2006 |
The present invention is a method and system which extracts, manipulates and embeds data from a compressed and standard compliant video bitstream which may be used for digital rights management, e.g. controlling... |
| 6990202 |
Packetizing devices for secure scalable data streaming |
| Jan-24-2006 |
A device and method thereof for packetizing scalably encoded and progressively encrypted data. The device includes a receiver adapted to receive a stream of data from an encoding and encrypting device,... |
| 6985589 |
Apparatus and method for encoding and storage of digital image and audio signals |
| Jan-10-2006 |
An apparatus and method for the encoding and storage of signals representing at least image information onto a storage medium is claimed. A source generator is configured to convert the signals into digitized... |
| 6985590 |
Electronic watermarking method and apparatus for compressed audio data, and system therefor |
| Jan-10-2006 |
The present invention provides a method and a system with which information embedded in compressed digital audio data can be directly operated. An embodiment of the system for embedding additional information... |
| 6961428 |
Method of videotext information encryption and security transmission in a network |
| Nov-1-2005 |
A technique of enciphering the graph-text document and its security transfer on a network. The sender of the graph-text document enciphers at least one graph-text document with digitizing algorithm provided... |
| 6948073 |
Protecting decrypted compressed content and decrypted decompressed content at a digital rights management client |
| Sep-20-2005 |
Theft of decompressed digital content as the content is being rendered is prevented. A requested slow-down of the rendering of the content is detected. Transfers of relatively large amounts of data are... |
| 6941461 |
System and method of uniquely authenticating each replication of a group of soft-copy documents |
| Sep-6-2005 |
A system and method for unique authentication of each replication of a plurality of soft-copy documents, forming a group. One soft-copy document, out of the group, becomes a carrier for an authentication... |
| 6907123 |
Secure voice communication system |
| Jun-14-2005 |
A secure real time voice communication system 70 is provided that allows for the secure transmission of voice communications between a sending device 72 and a receiving device 78 through the public switch... |
| 6892246 |
Computer system and method for storing video data |
| May-10-2005 |
A computer system and method for storing video data in memory is disclosed. Memory capacity is evaluated. If the memory capacity is sufficient to allow the storing of video data in the mass storage device,... |
| 6888944 |
Method for assigning encryption keys |
| May-3-2005 |
Sets of encryption keys useful by devices for decrypting encrypted content are defined using an error-correcting code such as a Reed-Solomon code to define vectors of length "n" over an alphabet of (0,... |
| 6885749 |
Scrambling a compression-coded signal |
| Apr-26-2005 |
This invention provides methods and apparatus for protecting data transmitted using standard compression techniques such as Huffman coding. After input data is preprocessed (filtered, quantized, etc.),... |
| 6883137 |
System and method for schema-driven compression of extensible mark-up language (XML) documents |
| Apr-19-2005 |
A method (and system) for compressing an extensible markup language (XML) document, includes compressing an XML document such that information in a markup portion therein is maintained in a compressed... |
| 6856686 |
Method and apparatus for securing e-mail attachments |
| Feb-15-2005 |
In accordance with a first aspect, a method for operating an electronic device adapted to be electronically coupled to at least one microprocessor based device and prevent unauthorized access to data exchanged... |
| 6856687 |
Portable telecommunication security device |
| Feb-15-2005 |
A portable security device for providing secure communications over a plurality of networks is presented. In one embodiment, the device comprises, at least one communication port for transfer of audio... |
| 6845159 |
Processing method and apparatus for converting information from a first format into a second format |
| Jan-18-2005 |
A data processing method and apparatus are proposed for used in the encryption, decryption and authentication of messages. A memory for storing input information, a set of operations and a processor for... |
| 6760443 |
Custom character-coding compression for encoding and watermarking media content |
| Jul-6-2004 |
A method of compressing media content in which a first predetermined portion of a media content is compressed using a first data-based compression algorithm and inserted into a first portion of a data... |
| 6704866 |
Compression and encryption protocol for controlling data flow in a network |
| Mar-9-2004 |
Process for controlling frames transporting data from a transmitting Terminal (DTE 1) to at least a receiving Terminal (DTE 2) through a plurality of consecutive nodes including a start access node (NODE... |
| 6654501 |
Method of integrating a watermark into an image |
| Nov-25-2003 |
In accordance with one embodiment of the invention, a method of integrating a watermark, or portion thereof, into an image, or portion thereof, includes the following. The watermark, or portion thereof,... |
| 6591365 |
Copy protection control system |
| Jul-8-2003 |
A system for protecting against use of pirated music. Two watermarks are inserted into the music to be protected by the music publisher. One watermark is robust--it will not be destroyed by compression.... |
| 6542992 |
Control and coordination of encryption and compression between network entities |
| Apr-1-2003 |
Two network entities allocate the performance of encryption and compression algorithms amongst each other in a controlled and coordinated manner so as to avoid unnecessary duplication of encryption and... |
| 6411714 |
Data decompression/decryption method and system |
| Jun-25-2002 |
An information processing system including a data input means (203, 208, 217, 219) for inputting or receiving data, a data compressing means (206) for compressing the data, a decompressing means (221)... |
| 6400824 |
Semiconductor imaging sensor with on-chip encryption |
| Jun-4-2002 |
An imaging device integrating a photosensing array, at least one analog-to-digital converter, and an encryption circuit on a single substrate. An optical image can be directly converted into encrypted... |
| 6334187 |
Information embedding method, information extracting method, information embedding apparatus, information extracting apparatus, and recording media |
| Dec-25-2001 |
An apparatus for embedding secret information in an image signal transmitted with a shape signal showing the shape of an object is described. This apparatus comprises an embedding position decision unit... |
| 6330334 |
Method and system for information dissemination using television signals |
| Dec-11-2001 |
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... |
| 6275588 |
Apparatus and method for performing and controlling encryption/decryption for data to be transmitted on local area network |
| Aug-14-2001 |
A technique for performing compression, encryption and transmission, and reception, decryption and decompression, respectively, of data communication packages on an area network. |
| 6272633 |
Methods and apparatus for transmitting, receiving, and processing secure voice over internet protocol |
| Aug-7-2001 |
This disclosure describes systems and methods for processing voice data for secure transmission and secure receipt over a network, such as the Internet. The systems and methods include the processing of... |
| 6266418 |
Encryption and authentication methods and apparatus for securing telephone communications |
| Jul-24-2001 |
An encryption device for a telephone having a handset and a base unit is disclosed. The device includes a handset interface, a first converter, an encryption processor, a second converter, and a host interface.... |
| 6266419 |
Custom character-coding compression for encoding and watermarking media content |
| Jul-24-2001 |
A method of compressing media content in which a first predetermined portion of a media content is compressed using a first data-based compression algorithm and inserted into a first portion of a data... |
| 6219420 |
High assurance encryption system and method |
| Apr-17-2001 |
A processor (22) of an encryption system (20) receives plain text (24) and operates an encryption algorithm to convert the plain text (24) to cipher text (26). A state monitor (30) confirms a conversion... |
| 6157720 |
Method and apparatus for encrypting data |
| Dec-5-2000 |
In the process of compressing and encrypting data, without increase of a processing time, a cipher capability is secured against the latest cryptanalysis such as differential and linear cryptanalyses.... |
| 6154542 |
Method and apparatus for simultaneously encrypting and compressing data |
| Nov-28-2000 |
A method and apparatus for simultaneously encrypting and compressing data identifies an encryption key and uses the encryption key to identify one compression algorithm from a set of compression algorithms.... |
| 6141421 |
Method and apparatus for generating hash value |
| Oct-31-2000 |
A method and apparatus for generating a highly secured hash value without deteriorating the processing speed is provided. A hash function such that when a message M is given, the message M is compressed... |
| 6122378 |
Data compression/encryption method and system |
| Sep-19-2000 |
An information processing system including a data input means (203, 208, 217, 219) for inputting or receiving data, a data compressing means (206) for compressing the data, a decompressing means (221)... |
| 6122379 |
Method and apparatus for performing simultaneous data compression and encryption |
| Sep-19-2000 |
A method and apparatus for performing simultaneous data compression and encryption both compresses and encrypts data in a single step. The invention includes a novel modeling method for use in conjunction... |
| 6072873 |
Digital video broadcasting |
| Jun-6-2000 |
In order to implement the Digital Video Broadcasting descrambling algorithm in the context of MPEG compressed data streams containing interleaved sections of scrambled and unscrambled data, at a data rate... |
| 6058186 |
Information signal transmission system |
| May-2-2000 |
The information signal transmission system of the present invention is so designed as to convert the analog information signal into digital information data and to transmit these digital data after enciphering... |
| 6041409 |
Device and method for data integrity and authentication |
| Mar-21-2000 |
Various aspects of data security such as validation, authentication and encryption are accomplished by the combinations of encoding and decoding employing a mapping or inverse mapping controllable by a... |
| 6021201 |
Method and apparatus for integrated ciphering and hashing |
| Feb-1-2000 |
A cryptography unit having a cipher unit and a hash unit coupled in parallel for simultaneous ciphering and hashing. The cipher unit implements a cipher algorithm that operates on a data block having a... |
| 6021198 |
Apparatus, system and method for secure, recoverable, adaptably compressed file transfer |
| Feb-1-2000 |
The present invention provides a system for handling and transmitting a file over a communication channel wherein the file may be adaptably compressed to improve throughput. The invention also provides... |
| 5991403 |
Recoverable cryptographic transformation on YUV data suitable for compressions |
| Nov-23-1999 |
A method for encoding MPEG compatible video data for subsequent compression comprises detecting a plurality of frames of video data organized as a GOP, generating an encryption key for the GOP, and encrypting... |
| 5943421 |
Processor having compression and encryption circuitry |
| Aug-24-1999 |
A data processing system (100) includes a data processor or CPU (102) having decompression circuitry (208, 212) and decryption circuitry (210, 214) that operates on compressed/encrypted data to produce... |
| 5805700 |
Policy based selective encryption of compressed video data |
| Sep-8-1998 |
Basic transfer units (BTUs) of compressed video data of video images are selectively encrypted in accordance with an encryption policy to degrade the video images to at least a virtually useless state,... |
| 5793869 |
Method and apparatus for encoding and data compressing text information |
| Aug-11-1998 |
A method and apparatus for encoding and compressing a text word of ASCII code by substituting a binary number for said word and sending, storing or recording said binary number. The binary number is retrieved... |
| 5771292 |
Device and method for data integrity and authentication |
| Jun-23-1998 |
Various aspects of data security such as validation, authentication and encryption are accomplished by the combinations of encoding and decoding employing a mapping or inverse mapping controllable by a... |
| 5768372 |
Method and apparatus for securing programming data of a programmable logic device |
| Jun-16-1998 |
An SRAM-based programmable logic device having decompression and decryption circuits between its EPROM nonvolatile programming data storage and its SRAM programming registers is secured against copying... |
| 5764774 |
Source data compression and decompression in code symbol printing and decoding |
| Jun-9-1998 |
A coded symbol encoding and decoding system and method provides improved efficiency and security by compressing and/or encrypting data prior to encoding the data into a coded symbol symbology. Prior to... |
| 5761303 |
Inclusion of audio signal within video signal, at band edges |
| Jun-2-1998 |
A system wherein audio samples are added to a video signal, but within the time-frame allocated to video information, thereby displacing video data. Two audio samples are preferably placed in each video... |
| 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... |
