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)
10/1982
10/19/1982CA1134047A1 Device for measuring the quality of a digital radio link
10/19/1982CA1134023A1 Process for the transmission of an audio-frequency analog signal during line-frame synchronization intervals of a television signal and apparatus for performing this process
10/12/1982US4354269 Apparatus for the processing of an information stream with the aid of an error-correcting convolutional code and apparatus for the detection of an error still irremediable in this processing
10/06/1982EP0061616A2 Error checking of mutually-exclusive control signals
09/1982
09/29/1982EP0061345A2 Processing circuits for operating on digital data words which are elements of a Galois field
09/29/1982EP0061288A2 Digital television signal processing
09/21/1982CA1132256A1 Video player-recorder with non-linear mark length modulation
09/15/1982EP0060095A2 Shuffling digital data
09/07/1982CA1131363A1 Pcm signal transmitting system
08/1982
08/24/1982US4346474 Even-odd parity checking for synchronous data transmission
08/24/1982US4346472 Method and apparatus for eliminating double bit errosion in a differential phase shift keying system
08/03/1982CA1129030A1 Error correction on burst channels by sequential coding
07/1982
07/27/1982CA1128664A1 Memory, incorporating error detection and correction
07/21/1982EP0056140A2 Signal copy device for digital record/reproduction system
06/1982
06/29/1982US4337457 Method for the serial transmission of binary data and devices for its implementation
06/24/1982WO1982002103A1 Bit serial encoder
06/22/1982US4336612 Error correction encoding and decoding system
06/15/1982US4335458 Memory incorporating error detection and correction
06/09/1982EP0053505A2 Pulse code modulated signal processing apparatus
06/09/1982EP0053474A1 Pulse code modulated signal processing apparatus
06/08/1982US4334309 Error correcting code system
06/01/1982CA1124852A1 Method and apparatus employing an improved format for recording and reproducing digital audio
05/1982
05/26/1982EP0052463A1 Soft decision convolutional code transmission system
05/26/1982EP0052433A2 Signal error detecting
05/26/1982EP0052216A2 Data storage systems
05/18/1982US4330860 Error correcting device
05/18/1982CA1123958A1 System for transmitting binary data via a number of channels
05/05/1982EP0050930A1 Improvements in or relating to data transmission systems
05/04/1982CA1123105A1 Method and apparatus for an efficient error detection and correction system
04/1982
04/29/1982EP0034142A4 Galois field computer.
04/20/1982US4326291 Error detection system
04/07/1982EP0048933A1 Circuit for correcting error in digital information signal
03/1982
03/30/1982CA1121059A1 Apparatus and method for providing error recognition and correction of recorded digital information
03/24/1982EP0048152A1 A PCM signal processor
03/24/1982EP0048151A1 A PCM signal processor
03/24/1982EP0048150A1 A PCM signal processor
03/23/1982US4321704 Parity checking circuitry for use in multi-bit cell PCM recording and reproducing apparatus
03/10/1982EP0046963A2 Circuit configuration for the recognition and correction of error bursts
03/09/1982CA1119729A1 Error correcting system
03/02/1982CA1119312A1 Recording of digital signals
02/1982
02/23/1982US4317202 Circuit arrangement for correction of data
02/23/1982CA1118902A1 Apparatus for performing single error correction and double error detection
02/16/1982US4316223 Recording of digital signals
02/02/1982US4314369 Digital coding process for recording sound channels with a television signal and apparatus realizing this process
02/02/1982CA1117661A1 Error correcting systm for serial by byte data
01/1982
01/19/1982US4312069 Serial encoding-decoding for cyclic block codes
01/19/1982US4312068 Parallel generation of serial cyclic redundancy check
01/13/1982EP0043432A2 Error detecting device for synchronous data transmission system
01/06/1982EP0042966A1 Digital data storage error detecting and correcting system and method
12/1981
12/30/1981EP0042776A1 Real-time fault correcting apparatus for data recorded on a magnetic carrier
12/30/1981EP0042522A1 System for processing and/or transmitting PCM data signals
12/29/1981US4308557 Video disc system
12/23/1981EP0042121A1 System for processing and transmitting PCM signals
12/15/1981US4306305 PCM Signal transmitting system with error detecting and correcting capability
12/08/1981CA1114067A1 Error detection system
11/1981
11/11/1981EP0039565A1 Methods of and apparatuses for processing binary data
11/04/1981EP0039150A2 Methods of and apparatuses for processing binary data
11/03/1981US4298981 Decoding shortened cyclic block codes
10/1981
10/20/1981US4296495 Device for measuring the quality of a digital radio link
10/13/1981US4295218 Error-correcting coding system
10/06/1981US4293951 Method and apparatus for encoding/decoding a convolutional code to a periodic convolutional code block
09/1981
09/29/1981CA1109964A1 Error-rejecting data transmission system
09/22/1981US4291406 Error correction on burst channels by sequential decoding
09/08/1981CA1108766A1 Digital signal transmitting system
08/1981
08/26/1981EP0034142A1 Galois field computer.
08/25/1981CA1107863A1 Programmable polynomial generator
08/20/1981WO1981002352A1 Serial encoding-decoding for cyclic block codes
08/19/1981EP0034036A2 Encoders and decoders for cyclic block codes
08/11/1981US4283787 Cyclic redundancy data check encoding method and apparatus
07/1981
07/15/1981EP0032055A1 Document processing system
07/07/1981US4277807 Recording digital signals
07/01/1981EP0031183A2 Multi-processor computer system
06/1981
06/30/1981US4276647 High speed Hamming code circuit and method for the correction of error bursts
06/16/1981CA1103360A1 Plural channel error correcting methods and means using adaptive reallocation of redundant channels among groups of channels
06/09/1981CA1102880A1 Method and apparatus to permit substantial cancellation of interference between a received first and second signal
06/02/1981US4271517 Circuit arrangement for the formation of check bits for binary data
04/1981
04/30/1981WO1981001209A1 Method and device for detecting errors in mass data represented in p-code
04/08/1981EP0026516A1 Apparatus for the processing of an information stream with the aid of an error-correcting convolutional code and for the detection of an error still irremediable in this processing
04/07/1981CA1099023A1 Method and system for transmitting and receiving interleaved blocks of encoded data words to minimize error distortion in the recovery of said data words
04/07/1981CA1099022A1 Parallel calculation of serial cyclic redundancy check
04/01/1981EP0026050A1 Improvements in or relating to interleavers and de-interleavers
03/1981
03/24/1981CA1098212A1 Code transmission method and apparatus therefor
02/1981
02/24/1981US4253182 Optimization of error detection and correction circuit
02/24/1981US4253115 Process for the transmission of an audiofrequency analog signal during line-frame synchronization intervals of a television signal and apparatus for performing this process
02/18/1981EP0024020A1 Sequential decoder and system for error correction on burst noise channels by sequential decoding
02/05/1981WO1981000316A1 Galois field computer
01/1981
01/07/1981EP0020669A1 A process and an apparatus for transferring binary information representing at least two parameters.
01/07/1981EP0020531A1 Error recognition and correction of digital information
01/06/1981CA1093213A1 Apparatus and method for the storing parity encoded data from a plurality of input/output sources
12/1980
12/30/1980US4242752 Circuit arrangement for coding or decoding of binary data
12/23/1980US4241446 Apparatus for performing single error correction and double error detection
12/16/1980US4240156 Concatenated error correcting system
12/10/1980EP0019689A1 Method and circuit for checking the presence of a marking signal on only one of the signal wires of line bundles comprising m signal wires
12/09/1980US4238852 Error correcting system
12/09/1980CA1091353A1 Vital digital communication system
10/1980
10/15/1980EP0016823A1 Data processing system having error detection and correction circuits
09/1980
09/09/1980US4222072 Video player/recorder with non-linear mark length modulation
09/09/1980CA1085506A1 Variable cyclic redundancy character detector
09/02/1980CA1085057A1 Method of transmitting digital signals
08/1980
08/12/1980US4217660 Method and apparatus for the coding and decoding of digital data