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)
08/1980
08/06/1980EP0013990A1 Serial binary information transmission method and devices for implementing the method
08/05/1980US4216540 Programmable polynomial generator
08/05/1980US4216531 Finite field multiplier
07/1980
07/29/1980CA1082815A1 Table lookup direct decoder for double-error- correcting (dec) bch codes using general pair of syndromes
07/22/1980US4214228 Error-correcting and error-detecting system
07/09/1980EP0013070A1 Video record systems
07/09/1980EP0012828A1 Correction circuit for byte-structured errors
07/08/1980US4211997 Method and apparatus employing an improved format for recording and reproducing digital audio
06/1980
06/12/1980WO1980001228A1 A process and an apparatus for transferring information representing at least two parameters
06/11/1980EP0011749A1 Data correction circuit
06/03/1980US4206440 Encoding for error correction of recorded digital signals
05/1980
05/28/1980EP0011353A1 Cyclic redundancy data check encoding method and apparatus
05/27/1980US4205374 Method and means for CPU recovery of non-logged data from a storage subsystem subject to selective resets
05/14/1980EP0011014A1 Device for measuring the quality of a digital connection and transmission equipments including such a device
05/06/1980US4202018 Apparatus and method for providing error recognition and correction of recorded digital information
05/06/1980US4201976 Plural channel error correcting methods and means using adaptive reallocation of redundant channels among groups of channels
05/06/1980US4201337 Data processing system having error detection and correction circuits
04/1980
04/30/1980EP0010506A1 Digital coding and decoding methods and devices for the recording of audio signals with a television signal, particularly on a video disk
04/30/1980EP0010211A1 Data storage subsystem comprising a pair of control units and method for the automatic recovery of data from a defaulting one of these control units
04/17/1980WO1980000760A1 Error recognition and correction of digital information
04/16/1980EP0010040A1 Method for transmitting an analog audiofrequency signal during line-field synchronisation intervals of a television signal, and apparatus for utilising this method
04/03/1980WO1980000626A1 Data processing system having error detection and correction circuits
04/01/1980CA1074919A1 Error checking and correcting device
03/1980
03/11/1980US4193062 Triple random error correcting convolutional code
02/1980
02/26/1980US4190893 Modular modulo 3 module
02/20/1980EP0008016A1 Method as well as transmitting and receiving apparatus for data transmission with adaptive error correctron
02/19/1980US4189710 Method and apparatus for detecting errors in a transmitted code
02/12/1980US4188616 Method and system for transmitting and receiving blocks of encoded data words to minimize error distortion in the recovery of said data words
02/05/1980US4187500 Method and device for reduction of Fibonacci p-codes to minimal form
01/1980
01/22/1980US4185269 Error correcting system for serial by byte data
01/09/1980EP0006480A1 Method and apparatus for generating error locating and parity check bytes
12/1979
12/18/1979CA1068410A1 Error correction code and apparatus for the correction of differentially encoded quadrature phase shift keyed data (dqpsk)
12/11/1979US4178550 Method and apparatus to permit substantial cancellation of interference between a received first and second signal
12/11/1979CA1067998A1 Plo phase detector and corrector
11/1979
11/27/1979US4176287 Versatile CMOS decoder
10/1979
10/17/1979EP0004718A1 Method of and apparatus for decoding shortened cyclic block codes
09/1979
09/18/1979US4168486 Segmented error-correction system
09/11/1979US4167701 Decoder for error-correcting code data
08/1979
08/22/1979EP0003480A2 Circuit for converting binary information by means of check bits
08/08/1979EP0003232A1 Circuit for converting binary information by means of check bits
07/1979
07/24/1979US4162480 Galois field computer
07/24/1979CA1059237A1 Apparatus for detecting and correcting errors in an encoded memory word
06/1979
06/12/1979CA1056509A1 Enhanced error correction
05/1979
05/08/1979CA1054254A1 Signal transferring
04/1979
04/24/1979US4151510 Method and apparatus for an efficient error detection and correction system
03/1979
03/20/1979US4145683 Single track audio-digital recorder and circuit for use therein having error correction
03/06/1979US4143406 Pcm recording and reproducing system
02/1979
02/27/1979US4142174 High speed decoding of Reed-Solomon codes
01/1979
01/09/1979US4134103 Error-rejecting data transmission system
12/1978
12/20/1978EP0000039A1 A data transmission process and system to permit substantial reduction of interference between a received first and second digital signal
12/19/1978CA1044800A1 Data resynchronization
10/1978
10/31/1978CA1041671A1 Serial digital bit stream code detector
10/10/1978US4119945 Error detection and correction
09/1978
09/26/1978US4117458 High speed double error correction plus triple error detection system
08/1978
08/15/1978US4107652 Error correcting and controlling system
08/15/1978US4107650 Error correction encoder and decoder
08/15/1978US4107649 Check system for detecting malfunction of an error detection circuit
08/08/1978US4105999 Parallel-processing error correction system
08/01/1978US4103823 Parity checking scheme for detecting word line failure in multiple byte arrays
07/1978
07/04/1978US4099160 Error location apparatus and methods
05/1978
05/16/1978US4090173 Vital digital communication system
05/02/1978US4087787 Decoder for implementing an approximation of the Viterbi algorithm using analog processing techniques
03/1978
03/07/1978US4077565 Error detection and correction locator circuits
02/1978
02/28/1978US4077028 Error checking and correcting device
12/1977
12/20/1977US4064483 Error correcting circuit arrangement using cube circuits
11/1977
11/29/1977US4060797 Serial digital bit stream code detector
11/22/1977US4059825 Slip correction decoder and method
09/1977
09/06/1977US4047151 Adaptive error correcting transmission system
08/1977
08/23/1977US4044329 Variable cyclic redundancy character detector
08/23/1977US4044328 Data coding and error correcting methods and apparatus
07/1977
07/26/1977US4038636 Multiple decoding system
07/19/1977US4037093 Matrix multiplier in GF(2m)
07/12/1977US4035767 Error correction code and apparatus for the correction of differentially encoded quadrature phase shift keyed data (DQPSK)
07/12/1977US4035626 Parity predict network for M-level N'th power galois arithmetic gate
06/1977
06/14/1977US4030067 Table lookup direct decoder for double-error correcting (DEC) BCH codes using a pair of syndromes
06/07/1977US4027952 Single optical lens with large aperture and large field
04/1977
04/26/1977US4020461 Method of and apparatus for transmitting and receiving coded digital signals
04/26/1977US4020460 Method and apparatus of checking to determine if a signal is present on more than one of n lines
03/1977
03/22/1977US4013997 Error detection/correction system
02/1977
02/22/1977US4009490 PLO phase detector and corrector
01/1977
01/04/1977US4001779 Digital error correcting decoder
12/1976
12/14/1976US3997727 Time division multiplexed digital switching apparatus
12/07/1976US3996558 Error detection and recovery from magnetic tape
10/1976
10/26/1976US3988580 Storage of information
10/12/1976US3986015 Arithmetic unit for use in a digital data processor and having an improved system for parity check bit generation and error detection
09/1976
09/21/1976US3982226 Means and method for error detection and correction of digital data
06/1976
06/22/1976US3965457 Digital control processor
06/01/1976US3961311 Circuit arrangement for correcting slip errors in receiver of cyclic binary codes
05/1976
05/18/1976US3958220 Enhanced error correction
04/1976
04/06/1976US3949208 Apparatus for detecting and correcting errors in an encoded memory word
03/1976
03/30/1976US3947725 Protective system for a capacitor voltage transformer
03/16/1976US3944973 Error syndrome and correction code forming devices
02/1976
02/10/1976US3938086 Circuit arrangement for correcting slip errors in pcm receivers