Optical disk apparatus and disk identification method
US8077573B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 16, 2009 |
| Grant date | Dec 13, 2011 |
| Priority date | — |
| Expiry date | Aug 26, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B19/125
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A highly reliable optical disk apparatus adapted to record and reproduce the information in and from plural types of optical disks is disclosed. An acquisition unit acquires a predetermined signal from the reflected light obtained by radiating a predetermined laser on each of the optical disks. A comparator compares the waveform of the signal acquired by the acquisition unit with the comparative waveform of the signal stored in a memory beforehand and obtained from the radiated laser corresponding to the optical disk. An identification unit identifies the type of the optical disk based on the result of comparison by the comparator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.