Optical information recording device
US4773060A · kind A · utility
25Cited by
4References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1985 |
| Grant date | Sep 20, 1988 |
| Priority date | — |
| Expiry date | Dec 3, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2007/24312
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A film of a crystal - crystal phase transformation type optical recording alloy is formed on an insulating substrate. Information is erased from the alloy film by heating it with an expedient other than a laser beam. Information is read by sensing reflected light of light projected on the alloy film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.