Systems and methods for enumerative encoding and decoding of maximum-transition-run codes and PRML (G,I,M) codes
US7616134B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 19, 2008 |
| Grant date | Nov 10, 2009 |
| Priority date | — |
| Expiry date | Jun 19, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2020/1836
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods for encoding/decoding are provided. The systems and methods include encoding a stream of K-bit input sequences into a stream of (G, I, M)-constrained 2N-bit output sequences by transforming each K-bit input bit sequence into two separate data paths including even and odd bits. Enumerative maximum-transition-run (eMTR) encoding of the even bits generates constrained even bits, and enumerative maximum-transition-run (MTR) encoding of the odd bits generates constrained odd bits. The constrained even and constrained odd bits are interleaved to form a stream of (G, I, M)-constrained 2N-bit output sequences where G is a global constraint, I is an interleave constraint, and M is a variable frequency oscillator constraint of a partial-response maximum-likelihood (PRML) codeword. Decoding systems and methods are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.