Phase detector for timing recovery loop
US7974369B2 · kind B2 · utility
4Cited by
3References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2009 |
| Grant date | Jul 5, 2011 |
| Priority date | — |
| Expiry date | Dec 2, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2516
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In one embodiment, a (hard-drive) read channel has a phase detector used in a timing recovery loop. The phase detector utilizes the sign bit and confidence value from a received log-likelihood ratio (LLR) signal to generate a mean value. The mean value is convolved with a partial response target to generate an estimated timing error signal. When implemented in a hard-drive read channel, the phase detector allows for timing recovery with lower loss-of-lock rates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.