Patents
Patents for H03M 13 - Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes (37,393)
02/1997
02/24/1997CA2183401A1 Method and apparatus for distinguishing control channel from traffic channels
02/22/1997CA2183778A1 Method for interleaving data frames, forward error correcting device and modulator including such a device
02/20/1997WO1997006624A1 Matched spectral null encoder/decoder
02/20/1997WO1997001841A3 Method of and system for interleaving real-time files
02/19/1997EP0758825A1 Method and apparatus for generating dc-free sequences with conveying partial information by the sequence of codeword digital sums of successive codewords
02/19/1997CN1143296A Signal processing system
02/19/1997CN1143288A Error detection and correction system for stream of encoded data
02/19/1997CN1143286A Communication device with improved echo and noise control in quantization channel
02/18/1997US5604772 Transmission system and modem utilizing coded modulation
02/18/1997US5604752 Communication method and apparatus therefor
02/18/1997US5604724 Maximum likelihood estimation using reference and spontaneous output peaks of partial response equalizer
02/13/1997WO1997005702A1 Data element interleaving/deinterleaving
02/12/1997EP0758167A1 Weighted output decoding process using the Viterbi algorithm in blocks
02/11/1997US5602934 Adaptive digital image signal filtering
02/11/1997US5602875 Method and apparatus for encoding and decoding information in a digtial communication system
02/11/1997US5602858 Digital signal decoding apparatus having a plurality of correlation tables and a method thereof
02/11/1997US5602857 Error correction method and apparatus
02/11/1997US5602767 Galois field polynomial multiply/divide circuit and a digital signal processor incorporating same
02/11/1997US5602591 System for generating a weighting coefficient using inter-frame difference signals at a center pixel for detecting motion information and at pixels surrounding the center pixel and quantizing the difference signal at the center pixel
02/05/1997EP0757455A2 Data transmission system with cyclic redundancy checksum value
02/05/1997EP0757448A2 Method for transmitting discrete information signals
02/04/1997US5600754 Method and system for the arrangement of vocoder data for the masking of transmission channel induced errors
02/04/1997US5600677 Trellis coded modulation system for digital television signal
02/04/1997US5600664 Information reproducing apparatus
02/04/1997US5600663 Adaptive forward error correction system
02/04/1997US5600662 Error correction method and apparatus for headers
02/04/1997US5600659 Low cost symbol error correction coding and decoding
01/1997
01/30/1997WO1997003518A1 Apparatus for decoding video signals encoded in different formats
01/30/1997WO1997003509A1 Apparatus for demodulating and decoding video signals
01/29/1997EP0756385A2 Error correction method and apparatus based on two-dimensional code array with reduced redundancy
01/29/1997CN1141561A Temporal-spatial error concealment apparatus and method for video signal processors
01/28/1997US5598432 Equalizing received signal samples by receiving input in a first register at a first rate greater than or equal to the transmission rate and further receiving samples into a plurality of register at a second rate lower than the first rate
01/28/1997US5598424 Error detection structure and method for serial or parallel data stream using partial polynomial check
01/28/1997US5598422 Digital computer having an error correction code (ECC) system with comparator integrated into re-encoder
01/28/1997US5598155 Variable length decoding method and apparatus
01/23/1997WO1997002529A1 Method and apparatus to protect data within a disk drive buffer
01/22/1997EP0755123A2 A GMD (generalised minimum distance) decoding apparatus and method therefor
01/22/1997EP0755122A2 Method and device for fixing an adaptive interrupt criterion with iterative decoding of multidimensional coded information
01/22/1997EP0754379A1 Method and apparatus for robust communications based upon angular modulation
01/22/1997EP0754341A1 A method and apparatus for protecting data from mis-synchronization errors
01/22/1997EP0754320A1 Circuit arrangement comprising a permutation unit and method of processing a batch of items
01/22/1997EP0720759A4 Programmable redundancy/syndrome generator
01/22/1997EP0516772B1 Process for digital video display and reproduction by the helical-scannning method
01/22/1997CN1141108A Trellis coded modulation system for HDTV
01/22/1997CN1141101A Convolutional interleaver and deinterleaver
01/22/1997CN1141100A Digital transmission and recording system with simple error correction
01/22/1997CN1140881A Data recording/reproducing apparatus corresponding to plurality of error correcting system and data recording medium
01/21/1997US5596589 Method and apparatus for encoding and decoding error correction codes in a radio communication system
01/16/1997WO1997001888A1 Transmission system with improved decoding of a block code
01/16/1997WO1997001842A1 Signal recording/reproduction apparatus and method of changing error recovery process execution sequence
01/16/1997WO1997001841A2 Method of and system for interleaving real-time files
01/15/1997EP0753968A2 Moving picture transmission system and moving picture transmission apparatus
01/15/1997EP0753942A2 Word-wise processing for reed-solomon codes
01/15/1997EP0753219A1 Decoding method
01/15/1997EP0727066A4 Finite field inversion
01/15/1997CN1140514A Method and system for data communication, using M-ary modulation scheme and inleaving means
01/15/1997CN1140363A Error correction coding and decoding method, and circuit using said method
01/15/1997CN1140277A Apparatus for detecting and correcting cyclic redundancy check errors
01/14/1997US5594743 Fifo buffer system having an error detection and correction device
01/14/1997US5594742 Bidirectional trellis coding
01/14/1997CA2074595C Method and apparatus for using orthogonal coding in a communication system
01/09/1997WO1997000972A1 Method and apparatus for determining a mutation
01/09/1997CA2224719A1 Method and apparatus for determining a mutation
01/08/1997EP0752769A1 Bit error rate monitoring in receiver with error correction
01/08/1997EP0752760A1 Puncturing convolutional encoder and depuncturer, both without FIFO buffer and rate conversion
01/08/1997EP0752654A2 Checksum generation circuit and method
01/08/1997CN1139999A Transmission system utilizng different coding principles
01/07/1997US5592498 CRC/EDC checker system
01/07/1997US5592492 Convolutional interleaving/de-interleaving method and apparatus for data transmission
01/07/1997US5592404 For use with a buffer obtaining data in the form of codewords
01/03/1997WO1997000564A2 Communication system for superimposing data onto a video signal
01/03/1997WO1997000559A1 Dedicated alu architecture for 10-bit reed-solomon error correction module
01/03/1997WO1996023360A3 A digital communication system having a punctured convolutional coding system and method
01/03/1997CA2224238A1 Communication system for superimposing data onto a video signal
01/02/1997EP0751643A1 Method and devices for the transmission of data with transmission error checking
01/02/1997EP0751625A2 Viterbi decoder with L=2 best decoding paths
01/02/1997EP0751522A2 A rate 16/17 (d=0, G=6/I=7) modulation code for a magnetic recording channel
01/02/1997EP0751519A2 A reduced complexity EPR4 post-processor for sampled data detection
01/02/1997DE19626076A1 Viterbi decoder for error control of digital data transmission in digital cellular networks
01/01/1997CN1139503A Device for establishing cell boundaries in a bit stream and CRC calculation
01/01/1997CN1139319A Rotationally invariant trellis coding incorporating transparent binary convolutional codes
12/1996
12/31/1996US5590138 Encoding and decoding apparatus
12/31/1996CA2070997C Error detection system
12/27/1996WO1996042052A1 Method and apparatus for detecting duplicate entries in a look-up table
12/27/1996EP0750401A2 Convolutional coder
12/27/1996EP0750400A1 Syndrome computing circuit
12/27/1996EP0750399A2 Cyclic redundancy coder
12/27/1996EP0750306A2 A method of maximum likelihood decoding and a digital information playback apparatus
12/27/1996CA2179082A1 Viterbi decoder with l=2 best decoding paths
12/25/1996CN1138930A Simultaneous demodulation and decording of a digitally modulated radio signal
12/25/1996CN1138795A Signal processing apparatus and method
12/24/1996US5588028 Simplified trellis decoder
12/24/1996US5588011 Tuned viterbi detector and equalizer system
12/24/1996US5588010 Parallel architecture error correction and conversion system
12/19/1996WO1996041424A1 High speed cyclical redundancy check system using a programmable architecture
12/19/1996WO1996041341A1 Trellis code with improved error propagation
12/19/1996DE19521327A1 Secure information transmission method using multi-component coding
12/18/1996EP0749211A2 Method and coding device for a secure transmission of data by means of a multi-component coding
12/18/1996EP0748538A1 Interleaving with low-speed memory
12/18/1996CN1138396A Method and apparatus for decoder optimization