Apparatus and method for determining type of optical disk
US7596068B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 3, 2004 |
| Grant date | Sep 29, 2009 |
| Priority date | — |
| Expiry date | Mar 14, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2007/0006
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is an apparatus and method for determining the type of an optical disk so as to implement an optimal servo operation according to the type of a loaded optical disk. In the method, the level of a wobble extraction signal is detected while a focusing servo is turned on, and the type of the loaded optical disk is determined based on the detected signal level, and then a tracking servo adjustment operation is performed according to the determined optical disk type. Accordingly, optical disk reproduction and/or recording characteristics are improved by performing an optimal tracking servo adjustment operation according to the determined optical disk type. Further, if the type of the loaded optical disk is read-only, there is no time loss, thus allowing a swift reproduction operation, since unnecessary operations such as recording mode adjustment and gain adjustment of a digital recording signal processor are omitted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.