Magneto-optical recording medium having a signal reproducing region of the reproducing layer larger than the record bit in the recording layer
US5982715A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 1998 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | Jul 15, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B11/10515
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magneto-optical recording medium with a reproducing layer that exhibits in-plane magnetization at room temperature and that comes to exhibit perpendicular magnetization as temperature rises. The second shielding layer is used to block the magnetization of record bits other than a record bit to be reproduced from being copied on a signal reproducing area in the reproducing layer. Consequently, even in the case of high-density record bits in the recording layer, only the magnetization of the record bit to be reproduced is copied on the reproducing layer. Therefore, the application of the magneto-optical recording medium makes it possible to produce superior reproducing signals even in the case where the records bits with high density are formed on the recording layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.