Method and related apparatus for diagnosing crosstalk within an optical pick-up unit by utilizing firmware
US7257055B2 · kind B2 · utility
0Cited by
3References
20Claims
0Family size
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Key dates
| Filing date | May 3, 2004 |
| Grant date | Aug 14, 2007 |
| Priority date | — |
| Expiry date | Apr 15, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/0945
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and a related apparatus for diagnosing crosstalk within an optical pick-up unit by utilizing firmware. The method includes calculating a tracking driving signal and a focusing driving signal according to a tracking error signal and a focusing error signal respectively, adding a noise to the focusing driving signal to form a test focusing driving signal through executing firmware, driving an optical pick-up unit by the tracking driving signal and the test focusing driving signal, and diagnosing characteristics of the pick-up unit through observing the tracking error signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.