Optical recording medium processing apparatus
US6363047B1 · kind B1 · utility
6Cited by
1References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 7, 1999 |
| Grant date | Mar 26, 2002 |
| Priority date | — |
| Expiry date | Jul 7, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B11/10597
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is an optical recording medium processing apparatus which can reduce the noise included in a reproduction signal. According to the present invention, light returning from the pit area and light returning from the information signal area of a recording medium are identified, and an RF-Sum signal which corresponds to the level of light returning from the recording medium is used as an APC monitor signal for the information signal area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.