Signal recording method for optical disk and apparatus therefor
US5327414A · kind A · utility
8Cited by
8References
12Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 15, 1993 |
| Grant date | Jul 5, 1994 |
| Priority date | — |
| Expiry date | Oct 15, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B11/1053
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A signal recording method for an optical disk and an apparatus therefor wherein a turn-off duration, during which a laser beam is turned-off, of a binary signal to be recorded on the optical disk is elongated and an irradiation duration, during which the laser beam is irradiated, of the binary signal is shortened, so that it is possible to avoid influence of thermal diffusion which is caused by irradiating the laser beam corresponding to the irradiation duration on the optical disk and to obtain a more precise reproduced signal in comparison with that obtained by prior arts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.