Overwritable magnetooptical recording method in which the recording medium is cooled after irradiation
US5751669A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 19, 1996 |
| Grant date | May 12, 1998 |
| Priority date | — |
| Expiry date | Jun 19, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B11/10586
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A light beam modulated according to a data signal to be recorded is irradiates a magnetooptical recording medium while moving the recording medium. During a series of recording operations, a predetermined recording area of the recording medium is heated to a temperature of a second temperature T.sub.2 or higher in accordance with the data signal and at least a part of the area heated to the temperature of second temperature T.sub.2 or higher is once cooled down to a temperature of a third temperature T.sub.3 or lower. Then, it is heated to a temperature of a first temperature T.sub.1 or higher. Thus, the recording medium is locally heated or cooled, so that recording of information is performed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.