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Class Information
Number: 714/795
Name: Error detection/correction and fault detection/recovery > Pulse or data error handling > Digital data error correction > Forward error correction by tree code (e.g., convolutional) > Viterbi decoding
Description: Subject matter where data is not decoded as soon as it is received, instead, a sequence of data, having a predetermined decoding depth, following the digit to be decoded is first collected, then, by computing what are known as path metrics, a limited number of possible messages are selected, each extending throughout the decoding depth far beyond the digit presently to be decoded, with one such survivor sequence ending in each of the data states.

Patents under this class:

Patent Number Title Of Patent Date Issued
8713401 Error recovery storage along a memory string Apr. 29, 2014
8707147 Viterbi decoder method and apparatus with RI detector in servo channel Apr. 22, 2014
8707145 System, method and apparatus for tail biting convolutional code decoding Apr. 22, 2014
8705666 Decoding for MIMO systems Apr. 22, 2014
8694878 Processor instructions to accelerate Viterbi decoding Apr. 8, 2014
8694877 Max-log-map equivalence log likelihood ratio generation soft viterbi architecture system and method Apr. 8, 2014
8677218 LDPC decoding with on the fly error recovery Mar. 18, 2014
8671335 Soft output Viterbi detector with error event output Mar. 11, 2014
8661325 Iterative decoder systems and methods Feb. 25, 2014
8654873 Method to invoke channel decoder early to decrease the acquisition time in demodulators Feb. 18, 2014
8644432 Viterbi decoder for decoding convolutionally encoded data stream Feb. 4, 2014
8644431 Parallel execution of trellis-based methods Feb. 4, 2014
8639100 Accelerated access to frames from a compressed digital video stream without keyframes Jan. 28, 2014
8638886 Parallel viterbi decoder with end-state information passing Jan. 28, 2014
8631309 Forward error correction with extended effective block size Jan. 14, 2014
8631306 Method and memory system using a priori probability information to read stored data Jan. 14, 2014
8630377 Detection of wideband interference Jan. 14, 2014
8627189 High performance digital signal processing in software radios Jan. 7, 2014
8625723 Method and apparatus for performing demapping in wireless communication system Jan. 7, 2014
8621335 Optimized Viterbi decoder and GNSS receiver Dec. 31, 2013
8612837 BM/LLR computations for multi-dimensional TCM/BCM codes Dec. 17, 2013
8612825 Data classification based on cyclic redundancy check and decoder metric Dec. 17, 2013
8605832 Joint sequence estimation of symbol and phase with high tolerance of nonlinearity Dec. 10, 2013
8601354 Methods and apparatus for identification of likely errors in data blocks Dec. 3, 2013
8601340 Time varying data permutation apparatus and methods Dec. 3, 2013
RE44614 Reliability unit for determining a reliability value for at least one bit decision Nov. 26, 2013
8595576 Systems and methods for evaluating and debugging LDPC iterative decoders Nov. 26, 2013
8594245 Digital broadcasting receiving system and method Nov. 26, 2013
8594217 Parallel implementation of maximum a posteriori probability decoder Nov. 26, 2013
8589774 Averaging signals to improve signal interpretation Nov. 19, 2013
8589758 Method and system for cyclic redundancy check Nov. 19, 2013
8583998 System and method for Viterbi decoding using application specific extensions Nov. 12, 2013
8583996 Method and apparatus for determining bits in a convolutionally decoded output bit stream to be marked for erasure Nov. 12, 2013
8582696 Method and apparatus for data quantization and packing with variable bit width and period Nov. 12, 2013
8582677 Communication apparatus, communication method and computer program Nov. 12, 2013
8578254 Modified trace-back using soft output Viterbi algorithm (SOVA) Nov. 5, 2013
8578253 Systems and methods for updating detector parameters in a data processing circuit Nov. 5, 2013
8578250 Data classification in a wireless communication system Nov. 5, 2013
8576958 Method for soft modulation in a wireless telecommunication network Nov. 5, 2013
8572471 SOVA sharing during LDPC global iteration Oct. 29, 2013
8572469 Turbo decoder employing ARP (almost regular permutation) interleave and arbitrary number of decoding processors Oct. 29, 2013
8571119 Software defined radio for modulation and demodulation of multiple communication standards Oct. 29, 2013
8570879 Obtaining parameters for minimizing an error event probability Oct. 29, 2013
8566683 Power-reduced preliminary decoded bits in viterbi decoders Oct. 22, 2013
8565356 Method and apparatus to detect a symbol in receiver including multiple receiving antennas Oct. 22, 2013
8560929 Systems and methods for non-binary decoding Oct. 15, 2013
8548102 Tail-biting convolutional decoding Oct. 1, 2013
8543895 List Viterbi decoding of tail biting convolutional codes Sep. 24, 2013
8539323 Encoding and decoding methods and apparatus for use in a wireless communication system Sep. 17, 2013
8539317 Hybrid error-control algorithm Sep. 17, 2013

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