Recording method for magneto-optic memory medium
US5224068A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 7, 1991 |
| Grant date | Jun 29, 1993 |
| Priority date | — |
| Expiry date | Jan 7, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B11/10586
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A recording method for a magneto-optic memory medium of exchange-coupled type having a recording layer of a low Curie point and high coercive force and a reading layer of a high Curie point and low coercive force, which comprises the steps of: applying a magnetic field to the magneto-optic memory medium to develop a predetermined data in the reading layer, and then applying both an optical beam and a magnetic field to the magneto-optic memory medium for writing the predetermined data in the recording layer, and simultaneously verifying the data upon the writing on the basis of a Kerr effect of the optical beam caused by the reading layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.