| 发明名称 |
MAGNETO-OPTICAL APPARATUS |
| 摘要 |
<p>A magneto-optical apparatus records, reads and erases information by radiating a laser beam on a magneto-optical medium which uses an amorphous material for a recording layer and which is subjected to information writing and erasure, wherein a predetermined DC signal is added to a focus error signal in the erasure mode, and the laser beam irradiates the magneto-optical medium in a defocused state.</p> |
| 申请公布号 |
CA1228919(A) |
申请公布日期 |
1987.11.03 |
| 申请号 |
CA19840462325 |
申请日期 |
1984.09.04 |
| 申请人 |
SONY CORPORATION |
发明人 |
AOKI, YOSHIO;TSUKAMURA, YOSHIHIRO |
| 分类号 |
G11B11/10;G11B7/085;G11B11/105;(IPC1-7):G11B13/04;G11B7/09 |
主分类号 |
G11B11/10 |
| 代理机构 |
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代理人 |
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