Optical disc drive, timing signal generator, and information recording and reproduction method
US6181655A · kind A · utility
11Cited by
10References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 27, 1998 |
| Grant date | Jan 30, 2001 |
| Priority date | — |
| Expiry date | Nov 27, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical disc drive produces read gate signals for controlling the address and data read timing, and write gate signals for controlling the timing of data writing. During the disc speed is stable, the read gate signals and write gate signals are formed using the clock signal generated by an internal oscillator. However, when the disc speed becomes unstable, the read gates and write gates are formed using the clock signal generated by the signal reproduced from the disc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.