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Document Title |
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7596703 |
Hidden data backup and retrieval for a secure device
An agent computer system, acting on behalf of the user, provides the personal information to various wide area network sites for conducting online transactions. A user has a secure device with a...
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7571316 |
Method and device for transforming a digital signal
The invention relates to a method of transforming a digital signal for it to be transmitted, the signal being decomposed into several regions each containing digital data, the signal comprising...
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7558968 |
Information processing apparatus and method
A nonvolatile memory stores encrypted data, which is obtained by linking and encrypting program data, in which combined data is compressed, and first information data indicating the number of...
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7545938 |
Digital watermarking which allows tampering to be detected on a block-specific basis
An apparatus for generating codes includes a quantization unit which generates quantization coefficients by performing discrete wavelet transform with respect to each of tiles into which an image...
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7526089 |
Device and method for controlling digital bidirectional communication
An interface block ( 11 ) converts the format of input downstream data (STRM). A CPU ( 12 ) receives the format-converted data (DIF) and realizes the MAC function. A TEK process block ( 13 )...
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7522727 |
Method and apparatus for providing authentication in a communication system
A method includes receiving an authentication request from a mobile station ( 401 ) and determining whether to forward the request to an authentication agent. When it is determined to forward the...
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7515711 |
Methods and apparatuses for encrypting video and for decrypting video
An encryption technique and a decryption technique that are applied to video data that is encrypted on a predetermined domain of compressed video data are disclosed. For example, JPEG2000...
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7492902 |
Custom character-coding compression for encoding and watermarking media content
An apparatus for compressing media content is disclosed. The apparatus divides the media content into at least three predetermined portions, compresses each of the at least three portions using one...
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7474750 |
Dynamic content-aware memory compression and encryption architecture
An architecture for content-aware compression and/or encryption of various segments of a application is disclosed. The architecture advantageously allows decompression and decryption units to be...
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7463735 |
Encoding and decoding methods for secure scalable streaming and related systems
A method and system for securely and scalably encoding data are disclosed. A method and system for decoding data which has been securely and scalably encoding are also disclosed. In one encoding...
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7440569 |
Tate pairing techniques for use with hyperelliptic curves
Methods and apparati are provided for determining a “Squared Tate pairing” for hyperelliptic curves and using the results to support at least one cryptographic process. The improved techniques...
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7370120 |
Method and system for reducing network latency in data communication
Methods and systems for accelerating data communication by reducing network latency particularly by data compression in which requested data is recursively compressed by an encoder and sent to the...
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7349539 |
Encoding and encrypting devices for secure scalable data streaming
A device and method thereof for encoding and encrypting data. The device includes a segmenter adapted to receive the data and segment at least a portion of the data into regions, a scalable encoder...
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7328342 |
Method for secure communication between two devices
A method for a secure transmission of information between a first and a second module is disclosed. Each module contains one of the keys of two pairs of keys. A first number and a second number are...
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7324735 |
Image processing
An image data processing system is configured to store image data with redundant protection in the form of a redundant array of inexpensive disks (RAID). An input card is configured to receive an...
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7286670 |
Method and apparatus for chaotic opportunistic lossless compression of data
The present invention is a compression method for compressing digital data. The data is strings of digital values, which can be broken down to a series of 1's and 0's. The present inventive method...
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7277546 |
Methods and apparatus for multi-level dynamic security system
Methods and apparatus for converting original data into a plurality of sub-bands using wavelet decomposition; encrypting at least one of the sub-bands using a key to produce encrypted sub-band...
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7272718 |
Device, method and storage medium for superimposing first and second watermarking information on an audio signal based on psychological auditory sense analysis
In a signal processing device and its method as well as a program storing medium, psychological auditory sense analysis of the survival state of an input signal of the time when the input signal...
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7254234 |
Method and apparatus for encrypting and decrypting information
An encryption key is generated in response to a plurality of information pieces being bases for the encryption key. Original information is encrypted into encryption-resultant information in...
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7242767 |
Recording medium, data recording method and apparatus, data regenerating method and apparatus, and copy control method
Data is recorded in a first part PA 1 in accordance with a signal format same as that of an existing CD at the lower limit (1.5 μm) of an allowable value of a Wreck pitch and the lower limit (1.2...
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7239708 |
Protecting decrypted compressed content and decrypted decompressed content at a digital rights management client
Encrypted compressed content is produced by encrypting content based at least in part on a content key, and compressing the content based at least in part on the content key. Thus, the content key...
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7200751 |
Watermark system
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...
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7200603 |
In a data storage server, for each subsets which does not contain compressed data after the compression, a predetermined value is stored in the corresponding entry of the corresponding compression group to indicate that corresponding data is compressed
In a technique for compressing data, a data storage server receives a set of data, which includes a first number of subsets. The storage server defines a number of compression groups for the set of...
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7174020 |
System and method for real-time secure communication based on multi-level transform and encryption
A stream of data is encoded by applying a multilevel transform to the stream of data, each level of the transform producing one or more transform coefficients for each block of a sequence of blocks...
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7164767 |
Data transfer system, data transfer apparatus, data recording apparatus, and data transfer method
It is an object to provide an efficient transfer of content data. In a case of transferring the content data from a data transfer device on a primary recording medium side to a data recording...
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7123720 |
Key scheduler for encryption apparatus using data encryption standard algorithm
A key scheduler for an encryption apparatus using a DES encryption algorithm is disclosed. The key scheduler includes: a first permutation choice unit for permuting a 56-bit block; a first register...
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7085379 |
Image compression device and image decompressing device, and computer-readable recorded medium on which program for allowing computer to execute image compressing method and image decompressing method
An image compression apparatus capable of efficiently encoding an image without causing color deviation to the eye compresses luminance element image data and two types of chrominance element image...
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7082413 |
System and method for authorized compression of digitized music
A system and method for enabling authorized music from a CD or DVD to be compressed by a user for the user's own use, but to prevent the recompression of unauthorized music from, e.g., the...
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7050588 |
System for processing an information signal
A system for processing an information signal comprises a system ( 1 ) for scrambling the information signal and at least one system ( 2 ) for descrambling the scrambled information signal. The...
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7050583 |
Method and apparatus for streaming data using rotating cryptographic keys
A method of producing a stream of digital data. The method includes determining a plurality of portions within the stream of digital data, such that a portion of the stream of digital data is...
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7023996 |
Encryption for asymmetric data links
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...
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7006631 |
Method and system for embedding binary data sequences into video bitstreams
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,...
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6990202 |
Packetizing devices for secure scalable data streaming
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...
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6985590 |
Electronic watermarking method and apparatus for compressed audio data, and system therefor
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...
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6985589 |
Apparatus and method for encoding and storage of digital image and audio signals
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...
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6961428 |
Method of videotext information encryption and security transmission in a network
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...
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6941461 |
System and method of uniquely authenticating each replication of a group of soft-copy documents
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...
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6907123 |
Secure voice communication system
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...
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6892246 |
Computer system and method for storing video data
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...
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6888944 |
Method for assigning encryption keys
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...
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6885749 |
Scrambling a compression-coded signal
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,...
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6883137 |
System and method for schema-driven compression of extensible mark-up language (XML) documents
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...
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6856686 |
Method and apparatus for securing e-mail attachments
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...
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6845159 |
Processing method and apparatus for converting information from a first format into a second format
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...
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6704866 |
Compression and encryption protocol for controlling data flow in a network
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...
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6654501 |
Method of integrating a watermark into an image
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...
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6591365 |
Copy protection control system
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...
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6542992 |
Control and coordination of encryption and compression between network entities
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...
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6411714 |
Data decompression/decryption method and system
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...
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6400824 |
Semiconductor imaging sensor with on-chip encryption
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...
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