Optical information recording and reproducing apparatus
US4985880A · kind A · utility
8Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 21, 1988 |
| Grant date | Jan 15, 1991 |
| Priority date | — |
| Expiry date | Sep 21, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B27/36
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An improved optical information recording and reproducing apparatus which is capable of detecting recording errors simultaneously with recording function for reduction of recording time, without requiring particular high accuracy for an optical system, and avoiding complication in the construction and consequent large size of the optical system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.