Magneto-optical recording medium exclusively for reproduction, method of manufacturing the same and method of reproducing information from the medium
US5962154A · kind A · utility
9Cited by
8References
9Claims
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Key dates
| Filing date | Dec 11, 1997 |
| Grant date | Oct 5, 1999 |
| Priority date | — |
| Expiry date | Dec 11, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magneto-optical recording medium, in which a magnetic wall is displaced to thereby enlarge a magnetic domain so as to reproduce a micro magnetic domain representing information, that has a non-magnetic substrate, a magnetic layer laminated on the substrate, and a projection-recess portion representing information formed on the surface of the substrate. The direction of magnetization of the magnetic layer on the projection-recess portion and the direction of magnetization of the magnetic layer on a region other than the projection-recess portion are oriented oppositely to each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.