Read-out information signal processing circuit in an optical recording and reproducing system
US5001698A · kind A · utility
2Cited by
2References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 1, 1990 |
| Grant date | Mar 19, 1991 |
| Priority date | — |
| Expiry date | Aug 1, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/004
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A read-out information signal processing circuit having a switching device for relaying the read-out information signal read-out from a recording medium in an optical recording and reproducing system. The read-out information signal relayed by the switching device is supplied to an A/D converting circuit through DC interrupt means. The switching device is turned off during the recording period. Thus, the variations of DC level supplied to the A/D converting circuit at the transient time from a recording mode to a reproducing mode can be prevented and the dynamic range of A/D converting circuit can be effectively used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.