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)
12/1996
12/18/1996CN1138272A 数据存储装置 Data storage means
12/18/1996CN1138257A Information data transmission through transmission channel as they are or with redundancy bits of apredetermined length added to each datum
12/17/1996US5586128 System for decoding digital data using a variable decision depth
12/17/1996US5586127 Apparatus and method for correcting error in data read from recording medium
12/17/1996CA2036423C Method of reducing the influence of fading of a viterbi receiver having at least two antennas
12/12/1996WO1996039661A1 Error detection and correction method and apparatus
12/12/1996DE19520987A1 Terminating trellis in recursive systematic convolutional code for data security applications
12/11/1996EP0748130A2 Recording and reproducing digital signals
12/11/1996EP0748124A2 Signal processing apparatus and method
12/11/1996EP0748118A2 Signal processing system
12/11/1996EP0748058A2 Implied interleaving, a family of systematic interleavers and deinterleavers
12/11/1996EP0748057A1 Bit error counting method and counter
12/11/1996EP0748056A2 An error detection and correction system for a stream of encoded data
12/11/1996EP0747818A1 Method and error correcting code (ECC) apparatus for storing predefined information with ECC in a direct access storage device
12/11/1996EP0746909A1 De-interleaving and buffering in one memory
12/11/1996EP0746853A1 A method and device for use with helical scan data recording by implementing a reed-solomon product code, a unitary medium comprising such data, and a cassette comprising such medium
12/11/1996EP0746848A1 Synchronous read channel
12/11/1996CN1137708A Digital signal processing method and device
12/10/1996US5583892 Method and system for performing transmission of digital data by coding bit information into the shape of a pulse and decoding the bit information from the shape of the pulse
12/10/1996US5583889 Data receiver
12/10/1996US5583499 Method and apparatus for computing error locator polynomial for use in a Reed-Solomon decoder
12/08/1996CA2178448A1 An error detection and correction system for a stream of encoded data
12/08/1996CA2170469A1 Signal processing apparatus and method
12/05/1996WO1996038923A1 Method and apparatus for determining burst errors in an error pattern
12/05/1996WO1996038922A1 Method for detecting and correcting transmission error of digital signal
12/04/1996EP0746123A1 Method and device for fast synchronisation of received data blocks comprising a checksum field
12/04/1996EP0441968B1 Analog viterbi decoder
12/03/1996US5581577 For use in a digital communication system
12/03/1996US5581575 Method and apparatus for transmission of variable rate digital data
12/03/1996US5581568 Data detection apparatus
12/03/1996CA2177897A1 Method for synchronizing a received data block comprising information data and subsequent checksum field, and a device for carrying out the method
11/1996
11/28/1996WO1996037964A1 Sound decoding device
11/27/1996EP0744848A1 Synchronisation of Viterbi detector with feedback to sampling means
11/27/1996EP0744847A1 Redundant data transmission system using at least two channels
11/27/1996EP0328637B1 Apparatus for computing multiplicative inverses in data encoding decoding devices
11/27/1996CN1136740A Error detecting apparatus for packet exchanger
11/26/1996US5579475 Method and means for encoding and rebuilding the data contents of up to two unavailable DASDS in a DASD array using simple non-recursive diagonal and row parity
11/26/1996US5579344 Adaptive maximum likelihood sequence estimation apparatus and adaptive maximum likelihood sequence estimation method
11/26/1996CA2079287C Coded modulation with unequal error protection for fading channels
11/26/1996CA2069993C Adaptive maximum likelihood sequence estimator using channel estimators of respective order of impulse response
11/21/1996WO1996037050A1 Reconfigurable interleaver/deinterleaver and address generator for data streams interleaved according to one of a plurality of interleaving schemes
11/21/1996DE19518648A1 Error correction procedure for asynchronous transmission mode cells
11/21/1996DE19518204A1 Multilevel trellis coding system using binary convolutional code
11/20/1996EP0743642A2 Data recording/reproducing apparatus corresponding to a plurality of error correcting system and a data recording medium
11/19/1996US5577068 Generalized direct update viterbi equalizer
11/19/1996US5577054 Device and method for performing error detection on an interleaved signal portion, and a receiver and decoding method employing such error detection
11/19/1996US5577053 Method and apparatus for decoder optimization
11/19/1996US5576903 Method and apparatus for administering data on magnetic tape medium by way of a header segment
11/14/1996WO1996036130A1 Encoding data with variable block lengths
11/13/1996CN1135685A Multi-level coding for decimalplace
11/12/1996US5574751 Method for a soft-decision modulation system
11/12/1996US5574735 Error correction circuit which substitutes bits into data stream during periods of data loss
11/12/1996US5574717 Line terminating equipment in SDH networks, using forward error correcting codes
11/12/1996US5574570 Video signal recording/reproduction apparatus and method for recording/reproducing two kinds of video signals carrying different amounts of information
11/12/1996US5574566 Apparatus of digitally recording and reproducing video signals
11/12/1996US5574448 Method and apparatus for encoding data with variable block lengths
11/12/1996CA2087020C Device and method for asynchronous cyclic redundancy checking for digital receivers
11/05/1996US5572532 Convolutional interleaver and deinterleaver
10/1996
10/31/1996WO1996034463A1 High integrity transport for time critical multimedia networking applications
10/31/1996CA2219379A1 High integrity transport for time critical multimedia networking applications
10/30/1996EP0740438A1 Method and apparatus for detecting cyclic code
10/30/1996EP0740437A1 Hardware-efficient frequency de-interleaving
10/30/1996CN1134581A Error hiding method and its apparatus for audible signal
10/29/1996US5570394 Signal transmission system
10/29/1996US5570391 Trellis coding method using a multilevel delay device
10/29/1996US5570382 Clock signal fault detector
10/29/1996US5570379 Coded modulation apparatus
10/29/1996US5570378 Error-correcting apparatus
10/23/1996EP0739010A2 Drop-out location detection circuit
10/23/1996EP0739009A2 PPM decoder utilizing drop-out location information
10/23/1996EP0491868B1 Error detection for fiber distributed interfaced optic link
10/23/1996CN1134195A Signal modulation method, signal modulator, signal demodulation method and signal demodulator
10/22/1996US5568520 Slope drift and offset compensation in zero-IF receivers
10/22/1996US5568518 Fast automatic gain control
10/22/1996US5568517 Decoding device for performing amplitude-phase demodulation and viterbi decoding
10/22/1996US5568494 Encoding or decoding device comprising a paged memory
10/22/1996US5568483 Method and apparatus for the formatting of data for transmission
10/22/1996US5568330 Recording/reproducing apparatus with maximum likelihood sequence estimation
10/17/1996WO1996032781A1 Data transmission method, and transmitter
10/17/1996WO1996032718A1 Data processing method for generating error correction product code block, data processing method for recording data in recording medium, and data processing device for data
10/17/1996WO1996027963A3 Method and apparatus to improve pstn access to wireless subscribers using a low bit rate system
10/16/1996EP0737390A1 Device for establishing cell boundaries in a bit stream and crc calculation
10/16/1996EP0737389A1 Transmission system with soft output decoding and reduced storage capacity requirement
10/16/1996EP0737386A1 Method and system for data communication, using a m-ary modulation scheme and inleaving means
10/16/1996EP0737384A1 Digital transmission and recording system with simple error correction
10/16/1996CN1133661A Method and apparatus for the transmission of variable rate digital data
10/16/1996CN1133660A Multirate serial viterbi decoder for code division multiple access system applications
10/15/1996US5566191 Soft decision maximum likelihood decoding method with adaptive metric
10/15/1996US5566190 Apparatus and methods for correcting lost data
10/15/1996US5566189 Method and device for puncturing data
10/15/1996US5566183 For recording elements of an interleaved digital data sequence
10/15/1996US5566155 Digital signal reproducing apparatus using a viterbi decoder
10/14/1996CA2147087A1 Method and apparatus for correcting and decoding a sequence of branches representing encoded data bits into estimated information bits
10/10/1996WO1996031953A1 Multiport ram for use within a viterbi decoder
10/10/1996WO1996031952A1 Data transmission system, data recording and reproducing apparatus and recording medium each having data structure of error correcting code
10/10/1996WO1996031881A1 Recording medium, data transmission method and apparatus, and data reproduction method and apparatus
10/10/1996WO1996016483A3 A system for decoding digital data using a variable decision depth
10/10/1996DE19612715A1 Dekoder und zugehöriges Verfahren Decoder and associated method
10/10/1996DE19607710A1 Digital fault correction appts. for fault in rate-one orthogonal folding code, using linear feedback shift register
10/08/1996US5563897 Method for detecting information bits processed by concatenated block codes