Method for controlling the farm of a magnetic domain of a magneto-optical disk using pre-write testing
US5513165A · kind A · utility
60Cited by
7References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1993 |
| Grant date | Apr 30, 1996 |
| Priority date | — |
| Expiry date | Nov 10, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/1258
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical recording control method determines an optimum recording laser power by effecting a test recording before information to be recorded is recorded on a disk. The recording laser power is formed of a plurality of powers. A relationship among the plurality of laser powers is regulated by power level ratios between respective powers, whereby a power used when a laser light is radiated on the disk can be controlled to be constant independent of an ambient temperature and a structure of a disk. Therefore, accurate recording marks can be formed on the disk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.