An optical information recording system in which the energy when transmitted to the recording layer is constant
US4051329A · kind A · utility
37Cited by
7References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1976 |
| Grant date | Sep 27, 1977 |
| Priority date | — |
| Expiry date | Mar 16, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/126
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to a system optically recording information, by the insolation of a photosensitive layer deposited on a substrate, on a track of substantially constant width. The system comprises a device for controlling the energy emitted by the source in response to the non-uniformity of the reflexion coefficient of said surface, said control device being such that the energy actually transmitted to the photosensitive layer is constant when the modulation signal has the value 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.