Correlation receiver for demodulating servo track information
US7230782B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 28, 2003 |
| Grant date | Jun 12, 2007 |
| Priority date | — |
| Expiry date | May 22, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/584
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A correlation receiver, among other functions, detects peaks of a correlation signal. The correlation receiver includes a master peak detector for determining whether an amplitude of a pulse of the correlation signal exceeds by at least a first delta an amplitude of a prior peak. If so, the master peak detector designates the pulse as a peak and sets an amplitude of the peak as the amplitude of the prior peak increased by a second delta. The master peak detector may also determine whether the amplitude of the correlation signal pulse falls below an amplitude of the prior peak less a droop value; and, if so, the master peak detector does not designate the pulse as a peak.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.