Optical information reproducing apparatus and method of setting the quantity of light in optical information reproducing apparatus
US6731584B1 · kind B1 · utility
16Cited by
8References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 29, 2000 |
| Grant date | May 4, 2004 |
| Priority date | — |
| Expiry date | Mar 23, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/1267
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical information reproducing apparatus and a method of setting the quantity of light in an optical information reproducing apparatus that can be applied to an optical disk apparatus for accessing a phase-change-type optical disk for easily and reliably selecting conditions for driving a laser diode with a drive signal having a high-frequency signal superimposed thereon. The power of a laser beam is set such that the peak power of the laser beam except for a relaxation oscillation component does not exeed a power Pe required to erase data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.