Decoding device and method, program recording medium, and program using modulation code encoded in accordance with a variable length table
US7388525B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 5, 2004 |
| Grant date | Jun 17, 2008 |
| Priority date | — |
| Expiry date | Apr 3, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2020/1453
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a decoding apparatus and method, a program storage medium, and a program, which allow high-performance decoding of a modulation code encoded in accordance with a variable-length table. A 17PP-SISO decoder 181 performs SISO decoding on a signal supplied from a PR-SISO decoder 81 by using a Viterbi decoding algorithm or a BCJR decoding algorithm in accordance with a trellis represented by paths corresponding, in a one-to-one fashion, to overall transitions in an entire encoding process in accordance with an encoding table 201 of a 17PP code. A resultant SISO-decoded signal is supplied to a turbo decoder 84 via a deinterleaver 83. The turbo decoder 84 performs turbo decoding on the signal output from the 17PP-SISO decoder 181. The present invention can be applied to a recording/reproducing apparatus for recording/reproducing a signal on/from a storage medium such as a high-density optical disk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.