发明名称 |
Photomagnetic recording device and photomagnetic reproducing device |
摘要 |
In a photomagnetic recording device where a record light beam irradiates a photomagnetic record medium to form a pit on the photomagnetic record medium, and a reproducing light beam irradiates the pit to reproduce the record information, the record light beam is pulsed intermittently at least at the beginning of the irradiation period so that a pit of substantially circular shape is formed on the photomagnetic record medium, whereby information is recorded with high accuracy.
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申请公布号 |
US5640379(A) |
申请公布日期 |
1997.06.17 |
申请号 |
US19910646222 |
申请日期 |
1991.01.28 |
申请人 |
SONY CORPORATION |
发明人 |
TATSUZAWA, KAICHI;TANAKA, SHOSUKE;KOIKE, SHIGEAKI |
分类号 |
G11B7/0045;G11B11/105;(IPC1-7):G11B7/00 |
主分类号 |
G11B7/0045 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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