Optical recording method
US4646103A · kind A · utility
46Cited by
7References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1986 |
| Grant date | Feb 24, 1987 |
| Priority date | — |
| Expiry date | Feb 26, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/1403
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In an optical recording system wherein the intensity of a laser beam is modulated with an input modulation signal so as to record information on a recording medium, the intensity modulation of the laser beam is performed after the pulse waveform of the input modulation signal is converted into two pulses which express the front edge and rear edge of the pulse waveform respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.