Method for automatically calibrating output power of optical pick-up head and optical disc driver using the method
US7843783B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2008 |
| Grant date | Nov 30, 2010 |
| Priority date | — |
| Expiry date | Apr 29, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/00456
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for automatically calibrating an output power of an optical pick-up head is provided. First, an optical disc is provided, wherein a relationship between the output power for writing the optical disc and a specific parameter corresponding thereto is defined as a first function. Next, the optical pick-up head is controlled to perform a writing operation on the optical disc according to an instruction value, and obtain the specific parameter corresponding to the instruction value. Next, the output power corresponding to the instruction value is obtained according to the first function and the specific parameter. Next, the instruction value is adjusted according to the instruction value and the output power, and the output power of the optical pick-up head is calibrated according to the adjusted instruction value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.