| 7043020 |
Smartcard for use with a receiver of encrypted broadcast signals, and receiver |
| May-9-2006 |
A smartcard for use with a receiver of encrypted broadcast signals comprises a microprocessor for enabling or controlling decryption of said signals. A memory is coupled to the microprocessor. The microprocessor... |
| 7039189 |
Stream continuity enforcement |
| May-2-2006 |
A system for enforcing data stream continuity, in accordance with the present invention, includes a server coupled to a transmission link for providing a data stream to at least one client over the transmission... |
| 7035470 |
System for handling errors related to IDCT data and method thereof |
| Apr-25-2006 |
A system and method for handling errors is provided. Errors related to the processing and storage of inverse discrete cosine transform (IDCT) image data cause hardware to become stalled. Stalled hardware... |
| 7017184 |
Image recording apparatus and image processing method therefor |
| Mar-21-2006 |
An image indicating a copyright and its related information are set through a setting input means and those settings are stored in a related information storing means in advance. Registration image data... |
| 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,... |
| 6985584 |
Non-volatile record medium, recording method, and recording apparatus |
| Jan-10-2006 |
A non-volatile recording medium for recording a digital audio signal that has been compressed at a compression rate selectable in a predetermined range and block-segmented in a predetermined data length... |
| 6971008 |
Authorization of services in a conditional access system |
| Nov-29-2005 |
A cable television system provides conditional access to services. The cable television system includes a headend from which service "instances", or programs, are broadcast and a plurality of set top units... |
| 6971011 |
Watermark detection |
| Nov-29-2005 |
Method of detecting a watermark embedded in a signal (S), in which a plurality of frames of the signal (S) is combined to a detection set (Dj) for one detection event. According to the invention, the reliability... |
| 6963972 |
Method and apparatus for networked information dissemination through secure transcoding |
| Nov-8-2005 |
A method and system enables network intermediaries such as proxies to transcode multimedia data without violating end-to-end security guarantees. In one embodiment, a content provider decomposes a data... |
| 6959088 |
Data processing apparatus and method for encryption or decryption of communication data |
| Oct-25-2005 |
In order to shorten the time required for encryption and decryption of communication data, the contents of input data are analyzed by a discrimination method such as pattern matching, and in accordance... |
| 6959088 |
Data processing apparatus and method for encryption or decryption of communication data |
| Oct-25-2005 |
In order to shorten the time required for encryption and decryption of communication data, the contents of input data are analyzed by a discrimination method such as pattern matching, and in accordance... |
| 6956948 |
Apparatus and method for generating multiple scrambling codes in asynchronous mobile communication system |
| Oct-18-2005 |
An apparatus and method for generating multiple scrambling codes in an asynchronous mobile communication system. In a scrambling code generating apparatus for generating a current scrambling code and a... |
| 6928165 |
Communication system using digital watermark for synchronizing multiplexed text data to video frames |
| Aug-9-2005 |
A digital video communication system includes, at a source site, an embedding circuit for embedding a digital watermark in a digital video stream to produce a watermarked digital video stream, and a multiplexer... |
| 6928162 |
Method and system for manipulating and telescoping a hash function |
| Aug-9-2005 |
A method and system for providing a hash and a complement of the hash for an item in a computer system are disclosed. The method and system include providing a plurality of components from the item. The... |
| 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,... |
| 6888943 |
Multimedia adaptive scrambling system (MASS) |
| May-3-2005 |
A system (300, 500) for scrambling digital samples (115, 200, 250, 260, 270) of multimedia data, including audio and video data samples, such that the content of the samples is degraded but still recognizable,... |
| 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.),... |
| 6879703 |
Method and apparatus for watermarking images |
| Apr-12-2005 |
Digital watermarks are embedded in image data (102)in order to enable authentication of the image data and/or replacement of rejected portions of the image data. Authentication codes are derived by comparing... |
| 6798893 |
Digital watermarking technique |
| Sep-28-2004 |
A watermarking system allowing both sufficiently high quality of watermarked moving pictures and enhanced ease of watermark detection is disclosed. A watermark level of a watermark to be embedded into... |
| 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... |
| 6647149 |
Methods and apparatus for securely transmitting and processing digital image data |
| Nov-11-2003 |
Methods and apparatus are provided for securely transmitting and processing digital image data for display. The invention provides for decomposing, compressing, and scrambling digital image data and forwarding... |
| 6532541 |
Method and apparatus for image authentication |
| Mar-11-2003 |
A system for authentication of a digital image includes a signature generator for creating a robust digital signature for an original image based on instrument features of the image. An authentication... |
| 6519341 |
Method and apparatus for outputting a high definition image |
| Feb-11-2003 |
An image processing apparatus separates input image data into low resolution image data and one or more auxiliary image data for interpolating the low resolution image data, and decrypts at least one of... |
| 6516465 |
Digital video receiver, a conditional access module and a method of transmitting data therebetween |
| Feb-4-2003 |
A digital video receiver, a conditional access module and method of transmitting data therebetween, the digital video receiver having a multi line socket for connection to the conditional access module,... |
| 6516412 |
Authorization of services in a conditional access system |
| Feb-4-2003 |
A cable television system provides conditional access to services. The cable television system includes a headend from which service "instances", or programs, are broadcast and a plurality of set top units... |
| 6404924 |
Image processing apparatus and method |
| Jun-11-2002 |
An image processing apparatus and method performs processing for finding a first image by using a second image having a smaller number of pixels than the first image and a third image having a smaller... |
| 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... |
| 6332194 |
Method for data preparation and watermark insertion |
| Dec-18-2001 |
A method for data preparation and watermark insertion. The method includes the step of preparing the data at a first time by manipulating at least one set of the data characteristics for subsequent insertion... |
| 6314188 |
Motion picture data encrypting method and computer system and motion picture data encoding/decoding apparatus to which encrypting method is applied |
| Nov-6-2001 |
Of I, P, and B pictures contained in an MPEG 2 data stream, only the I picture is subjected to encryption such as scramble processing. Scramble rule data used at that time is stored in the lead-in area... |
| 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... |
| 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... |
| 6167136 |
Method for preventing copying of digital video disks |
| Dec-26-2000 |
A method for securely storing analog or digital data on a data storage medium. An analog information signal is combined with a noise signal. The composite noise and information signal is encrypted with... |
| 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... |
| 6115818 |
Method and apparatus for embedding authentication information within digital data |
| Sep-5-2000 |
Arbitrary digital information is embedded within a stream of digital data, in a way that avoids detection by a casual observer and that allows a user to determine whether the digital data have been modified... |
| 6101604 |
Method and apparatus for embedding authentication information within digital data |
| Aug-8-2000 |
Arbitrary digital information is embedded within a stream of digital data, in a way that avoids detection by a casual observer and that allows a user to determine whether the digital data have been modified... |
| 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... |
| 6044157 |
Microprocessor suitable for reproducing AV data while protecting the AV data from illegal copy and image information processing system using the microprocessor |
| Mar-28-2000 |
A microprocessor used in an image information processing system is provided. The microprocessor includes: decryption unit 59 for decrypting the encrypted compressed AV data; IDCT unit 58 for performing... |
| 6037984 |
Method and apparatus for embedding a watermark into a digital image or image sequence |
| Mar-14-2000 |
A method and apparatus for watermarking an image or sequence of images without limiting the watermark signal. The watermarking apparatus includes a conventional DCT unit and quantizer for generating an... |
| 6026164 |
Communication processing system with multiple data layers for digital television broadcasting |
| Feb-15-2000 |
Video signals are encrypted so that only the privileged viewers can watch them. A layer coding unit divides video signals into two layers and encodes each layer. An encrypting unit encrypts the low-quality... |
| 6021199 |
Motion picture data encrypting method and computer system and motion picture data encoding/decoding apparatus to which encrypting method is applied |
| Feb-1-2000 |
Of I, P, and B pictures contained in an MPEG 2 data stream, only the I picture is subjected to encryption such as scramble processing. Scramble rule data used at that time is stored in the lead-in area... |
| 6021197 |
Method and apparatus for controlling the operation of a signal decoder in a broadcasting system |
| Feb-1-2000 |
In a method and apparatus for controlling the operation of a signal decoder in a broadcasting system, a broadcast signal and an encrypted signature are generated and the signature is added to the signal.... |
| 6005643 |
Data hiding and extraction methods |
| Dec-21-1999 |
A method for embedding additional information into a video movie without substantially having an influence on the compression efficiency of the video movie and also without substantially causing degradation... |
| 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... |
| 5933499 |
Image processing apparatus |
| Aug-3-1999 |
An image processing apparatus separates input image data into low resolution image data and one or more auxiliary image data for interpolating the low resolution image data, and decrypts at least one of... |
| 5915020 |
Portable satellite earth station |
| Jun-22-1999 |
A portable device for receiving satellite signals and displaying the signals as video. Preferably, the device includes a portable supporting member such as a hinged enclosure case, a satellite antenna,... |
| 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... |
