Parallel spectral equalization channels with low density parity check codes
US7478315B1 · kind B1 · utility
2Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2003 |
| Grant date | Jan 13, 2009 |
| Priority date | — |
| Expiry date | Oct 28, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/6331
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention combines low density parity checking with parallel equalization channels to enhance data retrieval from tape. Viterbi analysis is done as a precursor to the use of at least one low density parity decoder. A signal decoder may include a plurality of viterbi processors and at least one low density parity check decoder. The decoder may receive a plurality of pulse-shaped signals and produces decoded output signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.