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Class Information
Number: 714/796
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) > Branch metric calculation
Description: Subject matter where a tree of possible data sequences is constructed identifying the possible data sequences in terms of data states, and from which correlations are computed for selecting the paths which are to survive to the next stage of decoding received data.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7624327 |
Fast decoder and method for front end of convolutionally encoded information stream |
Nov. 24, 2009 |
| 7620882 |
Decoder and decoding method for decoding a code by selecting a path out of paths in a trellis diagram |
Nov. 17, 2009 |
| 7616715 |
Method and system for estimating the speed of a mobile device in a network |
Nov. 10, 2009 |
| 7617440 |
Viterbi traceback initial state index initialization for partial cascade processing |
Nov. 10, 2009 |
| 7613246 |
VSB transmission system |
Nov. 3, 2009 |
| 7613989 |
Decoder for executing a Viterbi algorithm |
Nov. 3, 2009 |
| 7613990 |
Method and system for a multi-channel add-compare-select unit |
Nov. 3, 2009 |
| 7609777 |
Maximum likelihood a posteriori probability detector |
Oct. 27, 2009 |
| 7609615 |
Method and apparatus for performing channel compensation and symbol demodulation for coherent demodulation in an OFDM system |
Oct. 27, 2009 |
| 7603611 |
Maximum likelihood decoding device, signal evaluating method, and reproducing apparatus |
Oct. 13, 2009 |
| 7594162 |
Viterbi pretraceback for partial cascade processing |
Sep. 22, 2009 |
| 7590926 |
Decoding apparatus, decoding method, program-recording medium, program and recording/reproduction apparatus |
Sep. 15, 2009 |
| 7590928 |
Apparatus and method for Viterbi decoding |
Sep. 15, 2009 |
| 7590921 |
Data communication system and method |
Sep. 15, 2009 |
| 7584409 |
Method and device for alternately decoding data in forward and reverse directions |
Sep. 1, 2009 |
| 7584407 |
Decoder and method for performing decoding operation using map algorithm in mobile communication system |
Sep. 1, 2009 |
| 7576935 |
Apparatus for recording and regenerating data |
Aug. 18, 2009 |
| 7571376 |
Viterbi decoder for executing trace-back work in parallel and decoding method |
Aug. 4, 2009 |
| 7565601 |
Circuit for carrying out the add compare select operation with a functionality going beyond this |
Jul. 21, 2009 |
| 7564913 |
Divisionless baseband equalization in symbol modulated communications |
Jul. 21, 2009 |
| 7552380 |
Method and apparatus for encoding and decoding modulation code |
Jun. 23, 2009 |
| 7530010 |
Hybrid trace back apparatus and high-speed viterbi decoding system using the same |
May. 5, 2009 |
| 7530011 |
Turbo decoding method and turbo decoding apparatus |
May. 5, 2009 |
| 7519897 |
Decoding apparatus and decoding method |
Apr. 14, 2009 |
| 7512866 |
Information recording/reproducing apparatus, and information recording medium |
Mar. 31, 2009 |
| 7499498 |
Hybrid memory architecture for reduced state sequence estimation (RSSE) techniques |
Mar. 3, 2009 |
| 7492839 |
Efficient implementation of GSM/GPRS equalizer |
Feb. 17, 2009 |
| 7487432 |
Method and apparatus for multiple step Viterbi detection with local feedback |
Feb. 3, 2009 |
| 7480852 |
Method and system for improving decoding efficiency in wireless receivers |
Jan. 20, 2009 |
| 7467347 |
Method for decoding error correcting code, its program and its device |
Dec. 16, 2008 |
| 7464317 |
Decoding LDPC (low density parity check) code and graphs using multiplication (or addition in log-domain) on both sides of bipartite graph |
Dec. 9, 2008 |
| 7458008 |
Decision voting in a parallel decoder |
Nov. 25, 2008 |
| 7454601 |
N-wide add-compare-select instruction |
Nov. 18, 2008 |
| 7447983 |
Systems and methods for decoding forward error correcting codes |
Nov. 4, 2008 |
| 7441177 |
Information reproduction apparatus and method using maximum likelihood decoding |
Oct. 21, 2008 |
| 7426681 |
Viterbi detector |
Sep. 16, 2008 |
| 7406650 |
Variable code rate and signal constellation turbo trellis coded modulation codec |
Jul. 29, 2008 |
| 7404139 |
Decoder with M-AT-A-Time Traceback |
Jul. 22, 2008 |
| 7400688 |
Path metric normalization |
Jul. 15, 2008 |
| 7398458 |
Method and apparatus for implementing decode operations in a data processor |
Jul. 8, 2008 |
| 7392463 |
Data reproducing apparatus avoiding selection of incorrect path |
Jun. 24, 2008 |
| 7383489 |
Method and apparatus for detecting viterbi decoder errors due to quasi-catastrophic sequences |
Jun. 3, 2008 |
| 7383488 |
Method and apparatus for detecting Viterbi decoder errors due to quasi-catastrophic sequences |
Jun. 3, 2008 |
| 7382831 |
Viterbi decoder utilizing compressed survival metrics for reduced memory size requirements |
Jun. 3, 2008 |
| 7380199 |
Method and apparatus for precomputation and pipelined selection of branch metrics in a reduced-state Viterbi detector |
May. 27, 2008 |
| 7373582 |
Apparatus and method for turbo decoding using a variable window size |
May. 13, 2008 |
| 7370265 |
Bandwidth efficient coded modulation scheme based on MLC (multi-level code) signals having multiple maps |
May. 6, 2008 |
| 7370266 |
Digital signal decoding device and digital signal decoding method |
May. 6, 2008 |
| 7363576 |
Method and apparatus for pipelined joint equalization and decoding for gigabit communications |
Apr. 22, 2008 |
| 7360147 |
Second stage SOVA detector |
Apr. 15, 2008 |
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