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)
01/1999
01/12/1999US5859601 Method and apparatus for implementing maximum transition run codes
01/07/1999WO1999000905A1 Processor and processing method
01/07/1999EP0889612A2 Viterbi decoder and decision feedback equalizer for coded modulation
01/07/1999DE19827815A1 Data transmission system e.g. for image data
01/07/1999DE19747888A1 Control circuit apparatus for CD-ROM optical disk driver
01/05/1999US5856988 Method and apparatus for data transmission
01/05/1999US5856987 Encoder and decoder for an SEC-DED-S4ED rotational code
01/05/1999US5856980 Baseband encoding method and apparatus for increasing the transmission rate over a communication medium
01/05/1999CA2134996C Apparatus and method for trellis decoder
12/1998
12/30/1998WO1998059473A1 Channel coding and interleaving for transmissions on a multicarrier system
12/30/1998WO1998059424A1 Trellis coding with punctured convolutional code
12/30/1998WO1998059423A1 Method and device for source-controlled channel decoding using a kalman filter
12/30/1998EP0887976A2 Receiver, transmitter-receiver and communication method
12/30/1998EP0887975A2 Sequence estimation for multicarrier signals
12/30/1998EP0887966A1 Convolutional encoding method and system
12/30/1998EP0887942A1 High rate trellis coding and decoding method and apparatus
12/30/1998CN1203707A Coding system and method providing unequal error protection by puncturing less significant symbols
12/29/1998US5854810 Apparatus and methods for use in transmitting and relieving a digital signal and a record carrier obtained by a transmitted apparatus or method
12/29/1998US5854800 Method and apparatus for a high speed cyclical redundancy check system
12/24/1998DE19725275A1 Block and convolutional codes decoding method for digital communication
12/23/1998WO1998058496A2 Transmission of digital signals by orthogonal frequency division multiplexing
12/23/1998WO1998058468A1 Information data multiplexing transmission system, multiplexer and demultiplexer used therefor, and error correcting encoder and decoder
12/23/1998WO1998058467A2 Source-controlled channel decoding using intra-frame correlation
12/23/1998EP0886407A2 5B6B coding for split channel transmission
12/23/1998EP0885488A1 Method and apparatus for generating a transform
12/23/1998CN1202992A Bit-interleaved rate 16/17 modulation code with three-way byte interleaved ECC
12/23/1998CN1202766A Quality calculator for viterbi-decoded data using zero-state metrics
12/23/1998CN1202699A Digital recording/playback apparatus with improved error correction capability and method therefor
12/22/1998US5852639 Resynchronization apparatus for error correction code decoder
12/22/1998US5852614 Weighted interleaving for correlated channel coding
12/22/1998CA2129236C Efficient crc remainder coefficient generation and checking device and method
12/22/1998CA2074549C Method and apparatus for communicating digital information, such as compressed video, using trellis coded qam
12/17/1998WO1998057473A1 Multilevel coding with time diversity
12/17/1998WO1998057433A1 Block decoding with soft output information
12/17/1998WO1998038747A3 A reception method and a receiver
12/16/1998EP0884879A2 QAM transmission using spread spectrum and sequence estimation
12/16/1998EP0884853A2 Fast Viterbi decoder
12/16/1998EP0884852A2 Quality calculator for viterbi-decoded data using zerostate metrics
12/16/1998EP0884850A2 Scalable audio coding/decoding method and apparatus
12/16/1998EP0883945A1 Method and apparatus for encoding and decoding information in a digital communication system
12/16/1998CN1202286A Data transmission method
12/16/1998CN1201939A Syndrome computing apparatus
12/15/1998US5850405 Method for error recognition of a digital bit data stream transmitted by a transmitter to a receiver
12/15/1998US5850403 Process of selectively protecting information bits against transmission errors
12/15/1998CA2122753C Apparatus and method for communicating digital data using trellis coding with punctured convolutional codes
12/10/1998WO1998056119A2 Non-coherent sequence estimation receiver for digital modulations
12/10/1998DE19736676C1 Data packet transmission method in digital transmission system
12/10/1998DE19736653C1 Service quality estimation method for channels of digital transmission system
12/10/1998DE19736626C1 Data transmission method in digital transmission system
12/09/1998EP0882327A2 A method for enhancing data transmission
12/09/1998CN1201310A Multi-carrier-wave transmission interleaving apparatus and method thereof
12/09/1998CN1201296A Error-correcting method and apparatus thereof
12/08/1998US5848437 Method of and system for interleaving real-time files with different periods
12/08/1998US5848106 Receiver decoder circuitry, and associated method, for decoding an encoded signal
12/08/1998US5848102 Method and apparatus for encoding/decoding QAM trellis coded data
12/08/1998US5848076 Memory card with capability of error correction and error correction method therefore
12/08/1998US5847763 Moving picture transmission system and moving picture transmission apparatus
12/03/1998WO1998054866A2 Method and apparatus for providing error protection for over the air file transfer
12/03/1998DE19736625C1 Data transmission method in digital transmission system
12/02/1998EP0881803A2 Weighted interleaving for correlated channel coding
12/02/1998EP0881795A2 Communication system for broadcasting to mobile users
12/02/1998EP0881639A2 Automatic equalization system
12/02/1998EP0880868A2 Method and apparatus for compressing and transmitting high speed data
12/02/1998EP0880836A1 Process for editing of data, in particular for transmission with variable channel bit rate
12/02/1998CN1200849A Viterbi co-processor and method of operation therefor
12/02/1998CN1200603A Automatic equalization system
12/02/1998CN1200509A Method and apparatus for performing error correcting process with small memory capacity
12/01/1998US5845021 Image information encoding/decoding system
12/01/1998US5844947 Viterbi decoder with reduced metric computation
12/01/1998US5844946 Soft-decision receiver and decoder for digital communication
12/01/1998US5844925 For transforming an n-bit value into a transformed n-bit output value
12/01/1998US5844922 High rate trellis coding and decoding method and apparatus
12/01/1998US5844919 Sector and track level error correction system for disc storage systems
12/01/1998US5844918 Digital transmission/receiving method, digital communications method, and data receiving apparatus
12/01/1998US5844741 System for reproducing high-density magnetic record data with viterbi detector for generating quadripartite reproduction data
12/01/1998US5844738 Synchronous read channel employing a sequence detector with programmable detector levels
12/01/1998US5844509 Synchronous read channel employing a data randomizer
12/01/1998US5844507 Rate 16/17 ENDEC with independent high/low byte decoding
11/1998
11/26/1998WO1998053574A1 Bit detection method in a radio communications system
11/26/1998WO1998053454A1 Digital modulation and digital demodulation
11/26/1998CA2290342A1 Bit detection method in a radio communications system
11/25/1998EP0880284A2 Error correction in data encoding
11/25/1998EP0880237A1 Error correction circuit
11/25/1998EP0880236A1 Method and apparatus for performing error correcting process with small memory capacity
11/25/1998EP0879503A1 A receiver, de-interleaving means and a method for a reduced time de-interleaving memory
11/25/1998EP0879464A2 Encoder for digital data storage
11/25/1998CN1200212A Forward error correction method using repeated data words
11/25/1998CN1040918C Method and apparatus for securing data mixed into an image
11/24/1998US5841819 In a system for processing a trellis-encoded video input signal
11/24/1998US5841818 Decoding method for trellis codes employing a convolutional processor
11/24/1998US5841796 Apparatus and method for calculating viterbi path metric using exponentially-weighted moving average
11/24/1998US5841794 Error correction processing method and apparatus for digital data
11/24/1998US5841793 Optical reproduction system having function of rationally changing error data chunk and reproducing multimedia information as code data
11/24/1998US5841781 For rearranging video data
11/24/1998US5841749 Method for recording (sending) /reproducing (receiving) data, apparatus thereof and data recording medium
11/24/1998US5841562 Bidirectional modular optoelectronic transceiver assembly
11/24/1998US5841478 Code sequence detection in a trellis decoder
11/19/1998WO1998052365A2 Subscriber unit with plural control and data sources for cdma wireless communication system
11/19/1998WO1998052362A2 Channel coding method
11/19/1998WO1998052330A1 Apparatus and method for noise-predictive maximum likelihood detection