发明授权
- 专利标题： Method of processing information signal with respect to opto-magnetic record medium
- 专利标题（中）： 相对于光磁记录介质处理信息信号的方法
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申请号： US336319申请日： 1981-12-31
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公开(公告)号： US4472748A公开(公告)日： 1984-09-18
- 发明人: Kiichi Kato , Tsuneo Yanagida
- 申请人： Kiichi Kato , Tsuneo Yanagida
- 申请人地址： JPX
- 专利权人： Olympus Optical Co. Ltd.
- 当前专利权人： Olympus Optical Co. Ltd.
- 当前专利权人地址： JPX
- 优先权： JPX56-1161 19810109
- 主分类号： G11B5/02
- IPC分类号： G11B5/02 ; G11B11/10 ; G11B11/105
摘要：
In a method of recording an information signal in an opto-magnetic record disc which has an easily magnetizable axis perpendicular to its surface, a constant erasing light beam and a modulated recording light beam are focussed by a single objective lens on adjacent tracks and an external magnetic field is applied to the record medium. The erasing and recording operations can be carried out at the same time by inverting the polarity of the external magnetic field track by track.
公开/授权文献
- US5508560A Semiconductor module 公开/授权日：1996-04-16