Disc recording and/or reproducing apparatus
US5745451A · kind A · utility
30Cited by
7References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1997 |
| Grant date | Apr 28, 1998 |
| Priority date | — |
| Expiry date | Sep 15, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B11/10508
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disc recording and reproducing apparatus for use with a disc cartridge which includes an exterior indicator for indicating a reflectance of an optical disc housed in a cartridge body thereof, the disc recording and reproducing apparatus including a detector for detecting the exterior indicator and a setting control circuit for initially setting an output level of a laser light irradiated on the optical disc based on a detection output from the detector before beginning recording or reproducing operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.