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)
01/1995
01/24/1995US5384560 Maximum likelihood sequence metric calculator
01/19/1995WO1995002291A1 Improved device and method for precoding
01/19/1995WO1995002283A1 Encoding data
01/18/1995EP0634840A1 Unequal error protection for combined information signals
01/17/1995US5383219 Fast forward link power control in a code division multiple access system
01/17/1995US5383205 Semiconductor memory device having an error correction circuit and an error correction method of data in a semiconductor memory device
01/17/1995US5383204 Parallel encoding apparatus and method implementing cyclic redundancy check and Reed-Solomon codes
01/17/1995US5383203 Compact device for correcting a header error in ATM cells
01/12/1995WO1995001683A1 Method and apparatus for detecting cyclic code
01/11/1995EP0633679A1 Intersymbol interference channel coding scheme
01/11/1995EP0632947A1 Method and apparatus of adaptive maximum likelihood sequence estimation using filtered correlation synchronization
01/11/1995EP0632911A1 Error detector circuit for receiver operative to receive discretely-encoded signals
01/10/1995US5381425 System for encoding and decoding of convolutionally encoded data
01/10/1995US5381424 Method and apparatus for fault-tolerant identification of the header field of a recording device
01/10/1995US5381423 Process and device for the decoding of a shortened, cyclic binary code using error correction
01/10/1995US5381422 Device for correcting code error
01/10/1995US5381274 Apparatus and method for recycling and reproducing a digital video signal
01/05/1995WO1995001018A1 Receiver for a direct sequence spread spectrum orthogonally encoded signal employing rake principle
01/05/1995WO1995001008A1 Bit error counting method and counter
01/04/1995EP0632623A2 Adaptive maximum likelihood sequence estimator
01/04/1995EP0632612A1 Error detection method using convolutional code and viterbi decoding
01/04/1995EP0632376A2 Encoding and rebuilding the data content of up to two unavailable DASDs in a DASD array
01/04/1995EP0631703A1 Efficient crc remainder coefficient generation and checking device and method
01/04/1995CN1097079A Error correcting memory system
01/04/1995CN1027335C Signal weighting system for digital receiver
01/03/1995US5379415 Fault tolerant memory system
01/03/1995US5379306 Viterbi decoding method
01/03/1995US5379305 Error correction system with selectable error correction capabilities
01/03/1995CA2127233A1 Adaptive maximum likelihood sequence estimator
12/1994
12/28/1994EP0631396A2 Real-time convolutional decoder with block synchronising function
12/28/1994EP0631391A1 Decoded counter with error check and self-correction
12/28/1994EP0393080B1 Hypersystolic reed-solomon encoder
12/27/1994US5377208 Transmission system with random error and burst error correction for a cyclically coded digital signal
12/27/1994US5377207 Mappings between codewords of two distinct (N,K) Reed-Solomon codes over GF (2J)
12/27/1994US5377194 Multiplexed coded modulation with unequal error protection
12/27/1994US5377133 System for enhanced implementation of add-compare-select (ACS) functions
12/27/1994US5376969 Method and apparatus for conveying compressed video data over a noisy communication channel
12/27/1994CA2045882C Convolutional code decoding circuit for the stocking and inverse scanning of the surviving paths of a viterbi algorithm
12/26/1994CA2126374A1 Real-time convolutional decoder with block synchronizing function
12/22/1994WO1994029990A1 Delay detecting method of maximum likelihood estimation and delay detector using it
12/21/1994EP0630128A2 Autorate method for simultaneous transmission of voice and data
12/21/1994EP0630117A2 Trellis coding in a simultaneous voice and data system
12/21/1994EP0630016A2 A system and method for synchronisation character detection in a data storage system
12/20/1994US5375129 For estimating a data symbol
12/15/1994CA2125520A1 Trellis coding in a simultaneous voice and data system
12/15/1994CA2125511A1 Autorate method for simultaneous transmission of voice and data
12/14/1994EP0629068A1 4B6B coding scheme
12/14/1994EP0629067A1 4B6B Coding
12/14/1994EP0629066A1 Checksum arrangement
12/14/1994EP0629060A1 Modifying check codes in data packet transmission
12/14/1994EP0629052A1 Method of and circuit for correcting errors
12/14/1994EP0629051A1 Digital information error correcting apparatus for correcting single errors(sec),detecting double errors(ded)and single byte multiple errors(sbd),and the correction of an odd number of single byte errors(odd sbc).
12/13/1994US5373513 Shift correction code system for correcting additive errors and synchronization slips
12/13/1994US5373512 Memory controller with parity generator for an I/O control unit
12/13/1994US5373511 Method for decoding a reed solomon encoded signal with inner code and apparatus for doing same
12/08/1994WO1994028656A1 Transmitting and receiving apparatus and method including punctured convolutional encoding and decoding
12/08/1994WO1994028622A1 A data decoder and method for use therein using a dynamically indexed channel state metric
12/08/1994WO1994028546A1 Method and device for correcting error in digital data
12/08/1994WO1994027787A1 Grinding tape and method of manufacturing the same
12/07/1994EP0627821A1 Method and apparatus for interleaving a sequence of data elements
12/07/1994EP0627141A1 High speed modem systems incorporating distribution preserving tomlinson encoding and decoding for secondary channels
12/06/1994US5371751 Method of correcting errors of coded data
12/06/1994US5371750 Error-correction encoding and decoding system
11/1994
11/30/1994CN1026830C Method for genermation of parity symbols and circuit design for carrying out this process
11/29/1994US5369671 System and method for decoding tail-biting code especially applicable to digital cellular base stations and mobile units
11/29/1994US5369652 Error detection and correction having one data format recordable on record media using a diverse number of concurrently recorded tracks
11/29/1994US5369650 Error detection and correction apparatus in a BY-4 RAM Device
11/29/1994US5369641 Method and apparatus for detecting and correcting errors in data on magnetic tape media
11/29/1994US5369535 Fixed block architecture disk file with improved position identification and error handling
11/24/1994WO1994027390A1 Method and apparatus for encoding data
11/24/1994DE4316813A1 Reed/Solomon decoder
11/23/1994EP0625829A2 Post processing method and apparatus symbol reliability generation
11/22/1994US5367666 Inconsistency-protected multiprocessor system with broadcasting of symbol-error protected code words
11/22/1994US5367479 Divider device to divide a first polynomial by a second one
11/22/1994US5367478 Mutual division circuit
11/17/1994EP0624291A1 Error protection in a subband coder.
11/17/1994EP0624275A1 Method and system for the arrangement of vocoder data for the masking of transmission channel induced errors
11/15/1994US5365604 Error concealment apparatus for video signal processors
11/15/1994US5365530 Error-correction encoding and decoding system
11/15/1994US5365529 Circuitry for detecting and correcting errors in data words occurring in Reed-Solomon coded blocks and determining when errors are uncorrectable by syndrome analysis, Euclid's algorithm and a Chien search
11/09/1994EP0624019A2 Trellis coded QAM using punctured convolutional codes
11/09/1994EP0624018A1 Rotationally invariant multilevel coded systems
11/08/1994US5363413 Data decoder and method for use therein using a dynamically indexed channel state metric
11/08/1994US5363412 Method and apparatus of adaptive maximum likelihood sequence estimation using filtered correlation synchronization
11/08/1994US5363099 Method and apparatus for entropy coding
11/03/1994DE4342454A1 Verfahren zum Verarbeiten digitaler Bilddaten A method for processing digital image data
11/02/1994EP0489035B1 Process and circuit for producing parity symbols
11/02/1994CN1094553A Error detector circuit for receiver operative to receive discretely-encoded signals
11/01/1994US5361266 Error correction circuit
10/1994
10/26/1994EP0621698A2 Error correction method including erasure correction, and apparatus therefore
10/26/1994CN1094205A Error-correcting tandem encoding system
10/25/1994US5359627 Channel codec apparatus and method utilizing flat codes
10/25/1994US5359610 Error detection encoding system
10/19/1994EP0620654A2 Decoder
10/19/1994CN1093844A Method of and circuit for detecting synchronism in viterbi decoder
10/18/1994US5357526 Method and apparatus for correcting errors of compressed data
10/18/1994US5357524 Apparatus for converting a digital signal
10/12/1994EP0619666A2 Rotationally invariant trellis coded modulation system
10/12/1994EP0619654A2 Error correction by detection of a degree difference between dividend and divisor polynomials used in euclidean algorithm
10/11/1994US5355379 Error protection for VLC coded data