Calibration of focus error signal offset in a focus servo system
US7092322B2 · kind B2 · utility
10Cited by
57References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2001 |
| Grant date | Aug 15, 2006 |
| Priority date | — |
| Expiry date | Jan 14, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/094
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A focus error signal offset calibration is presented. The focus error signal offset can be calibrated by varying the focus error signal offset to optimize an operating characteristic of the optical disk drive. In some embodiments, the operating characteristic can be a servo function. In some embodiments, the operating characteristics can be a read function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.