Optical storage apparatus and method for automatically adjusting loop gain thereof
US8531928B2 · kind B2 · utility
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13Claims
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Key dates
| Filing date | Apr 24, 2009 |
| Grant date | Sep 10, 2013 |
| Priority date | — |
| Expiry date | Nov 27, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/0956
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical storage apparatus and a method for automatically adjusting a loop gain thereof are provided. The method includes the following steps. Firstly, a compact disk is written by an erase power. Next, a writing state of the erase power is detected to generate an error signal. Finally, a loop gain of a servo control loop is corrected according to the error signal. Therefore, the loop gain can be corrected by the present invention according to a reflectance of the compact disk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.