发明授权
- 专利标题： Magneto-optical recording and reproducing device using the modulation of intensities of the magnetic field and light beam
- 专利标题（中）： 使用磁场和光束的强度调制的磁光记录和再现装置
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申请号： US340771申请日： 1989-04-20
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公开(公告)号： US5077714A公开(公告)日： 1991-12-31
- 发明人: Hiroyuki Katayama , Kenji Ohta , Junichiro Nakayama , Tomoyuki Miyake , Akira Takahashi
- 申请人： Hiroyuki Katayama , Kenji Ohta , Junichiro Nakayama , Tomoyuki Miyake , Akira Takahashi
- 申请人地址： JPX Osaka
- 专利权人： Sharp Kabushiki Kaisha
- 当前专利权人： Sharp Kabushiki Kaisha
- 当前专利权人地址： JPX Osaka
- 优先权： JPX63-97487 19880420
- 主分类号： G11B11/10
- IPC分类号： G11B11/10 ; G11B11/105
摘要：
A magneto-optical recording and reproducing device for recording and reproducing data determined by negative magnetized areas in a magneto-optical recording medium. The device including a laser beam output level control means for controlling the intensity of a laser beam when recording data on the medium. The device prevents the causes of false signals and incorrect detection influenced by residual negative magnetized domains by increasing laser beam intensity when rewriting positive magnetized areas to erase residual negative magnetized areas.
公开/授权文献
- US5508746A Advanced television system 公开/授权日：1996-04-16