发明名称 |
Optical magnetic memory device utilizing non-recorded portions of recording medium to represent data |
摘要 |
An optical magnetic memory device includes an optical magnetic recording medium such as a disc having recording magnetic film at least on one side thereof and initialized in a certain direction in advance, a recording section for recording data in such a manner that data-recorded portions and non-recorded portions are alternately formed, and a reproducing section for reproducing data from the recording medium by detecting the interval between the recorded or non-recorded portions. The reproducing section comprises a detector for detecting positive and negative peaks of signals reproduced from the recorded or non-recorded portion and a selector for selecting either of the detection outputs from the detector according to a control signal.
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申请公布号 |
US4939710(A) |
申请公布日期 |
1990.07.03 |
申请号 |
US19880214930 |
申请日期 |
1988.07.01 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
FUJI, HIROSHI;MAEDA, SHIGEMI;YAMAGUCHI, TAKESHI;DEGUCHI, TOSHIHISA;KOBAYASHI, SHOZOU |
分类号 |
G11B11/105 |
主分类号 |
G11B11/105 |
代理机构 |
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代理人 |
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地址 |
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