Optical disk device and recording power determining method
US7239586B2 · kind B2 · utility
1Cited by
2References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2001 |
| Grant date | Jul 3, 2007 |
| Priority date | — |
| Expiry date | Feb 20, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/1879
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical disk drive and recording power determination method determine the optimum power with consideration for the recording state of a base layer track when determining the optimum power by test recording before recording user data. After recording at a second recording power that is higher than a first recording power by a specific amount, recording is performed at a third recording power that is lower than the first recording power by a specific amount, and the first recording power is set to the recording power for data recording when a specified playback signal quality is achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.