Demodulation compensation for spiral servo tracks in hard disk drives
US7307806B1 · kind B1 · utility
9Cited by
27References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 17, 2006 |
| Grant date | Dec 11, 2007 |
| Priority date | — |
| Expiry date | Feb 3, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/59605
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A servo compensation system, comprises a sampler that generates a plurality of samples of a waveform that is generated as a read head moves across a servo track, which includes servo data and at least one synchronization symbol. A processor determines an estimated location of a peak amplitude of the waveform with respect to the plurality of samples of the waveform, determines a sampling phase, determines a compensation amount based on a compensation curve and the sampling phase, and determines a refined estimated location of the peak amplitude based on the estimated location and the compensation amount.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.