发明授权
- 专利标题： Method of controlling stop operation of rotating magnetic field for magnetic bubble memory device
- 专利标题（中）： 控制磁性气泡存储装置旋转磁场停止运行的方法
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申请号： US636671申请日： 1984-08-01
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公开(公告)号： US4550388A公开(公告)日： 1985-10-29
- 发明人: Takashi Toyooka , Kazutoshi Yoshida , Kazuhiro Ishida , Tatsuo Okahashi , Hirokazu Aoki , Ryo Suzuki , Yutaka Sugita
- 申请人： Takashi Toyooka , Kazutoshi Yoshida , Kazuhiro Ishida , Tatsuo Okahashi , Hirokazu Aoki , Ryo Suzuki , Yutaka Sugita
- 申请人地址： JPX Tokyo JPX Tokyo
- 专利权人： Hitachi, Ltd.,Hitachi Microcomputer Engineering Ltd.
- 当前专利权人： Hitachi, Ltd.,Hitachi Microcomputer Engineering Ltd.
- 当前专利权人地址： JPX Tokyo JPX Tokyo
- 优先权： JPX58-141230 19830803
- 主分类号： G11C11/14
- IPC分类号： G11C11/14 ; G11C19/08
摘要：
In a magnetic bubble memory device in which magnetic bubbles are propagated under influence of a rotating magnetic field, a method of controlling a stop operation of a rotating magnetic field in which magnetic field is caused to further rotate beyond the stop direction for a predetermined over-rotation angle and is then caused to return to the stop direction which is followed by the removal of the magnetic field, is presented. The over-rotation angle is in a range of 10 to 40 degrees. The invention is applicable whether bubble drive is performed using a drive current of triangular, square or trapezoidal waveform.
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