Optical disk drive
US7898930B2 · kind B2 · utility
0Cited by
5References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 31, 2008 |
| Grant date | Mar 1, 2011 |
| Priority date | — |
| Expiry date | Jun 16, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2020/1274
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In an embodiment, an optical disk drive includes a land prepit detection circuit. With such circuit, if the optical disk drive reads a poor-quality disk on which, in terms of signals, LPP-like noises are caused by a defect of a land area, it is possible to increase the noise immunity and LPP detection accuracy of the optical disk drive so that the optical disk drive is capable of successfully detecting LPP without fail.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.