发明名称 |
Pick-up for selectively reading and writing an optical recording medium having pits and magnetic domains |
摘要 |
The beam of light reflected from an optico-magnetic recorded medium is reflected by an optical pick-up onto one optical or another in accordance with the direction that the beam's plane of polarization is rotated in. A data signal is obtained from the difference in the photovoltages of the two photodetectors.
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申请公布号 |
US5325350(A) |
申请公布日期 |
1994.06.28 |
申请号 |
US19930078346 |
申请日期 |
1993.06.21 |
申请人 |
DEUTSCHE THOMSON-BRANDT GMBH |
发明人 |
MORIMOTO, YASUAKI;ZUCKER, FRIEDHELM;BUECHLER, CHRISTIAN;SCHROEDER, HEINZ-JOERG |
分类号 |
G11B11/105;G11B13/04;(IPC1-7):G11B7/00 |
主分类号 |
G11B11/105 |
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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