发明授权
- 专利标题： Bias-magnetic-field generating apparatus in magneto-optical information writing and erasing system
- 专利标题（中）： 磁光信息写入和擦除系统中的偏磁场产生装置
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申请号： US780662申请日： 1985-09-26
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公开(公告)号： US4748605A公开(公告)日： 1988-05-31
- 发明人: Mitsugu Sakai , Shozi Yoshikawa
- 申请人： Mitsugu Sakai , Shozi Yoshikawa
- 申请人地址： JPX Tokyo
- 专利权人： Olympus Optical Company Limited
- 当前专利权人： Olympus Optical Company Limited
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX59-145905[U] 19840928
- 主分类号： G11B11/10
- IPC分类号： G11B11/10 ; G11B11/105 ; G11B20/10 ; G11B5/02 ; G11B11/00
摘要：
A magneto-optical information system writes and erases information on and from a magneto-optical information recording medium under application of a bias-magnetic-field to the recording medium according to writing and erasing command signals. A differential amplifying circuit differentially processes the writing and erasing command signals to produce a differential output signal, and a constant current power amplifying circuit produces a stable drive current according to the differential output signal. A bias-magnetic-field generating coil is driven by the stable drive current so that a stable bias-magnetic-field is applied to the information recording medium according to the differential output signal.
公开/授权文献
- US5832080A Method and apparatus for routing conductors through a hinge 公开/授权日：1998-11-03
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