Apparatus and method for recording, reproducing and erasing on optical recording discs
US4403318A · kind A · utility
34Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1981 |
| Grant date | Sep 6, 1983 |
| Priority date | — |
| Expiry date | Apr 22, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for recording, reproducing and erasing for an optical recording disc capable of recording information data with a high density, and capable of recording new information data and simultaneously erasing the previously recorded information data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.