发明授权
- 专利标题： Optical information processor and method for accessing rotating record carrier utilizing acousto-optic light deflector including holding a focus error signal during track jumping
- 专利标题（中）： 光信息处理器和利用声光偏转器访问旋转记录载体的方法，包括在轨道跳跃期间保持聚焦误差信号
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申请号： US842200申请日： 1986-03-21
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公开(公告)号： US4802153A公开(公告)日： 1989-01-31
- 发明人: Keiji Kataoka , Takeshi Maeda , Yoshito Tsunoda
- 申请人： Keiji Kataoka , Takeshi Maeda , Yoshito Tsunoda
- 申请人地址： JPX Tokyo
- 专利权人： Hitachi, Ltd.
- 当前专利权人： Hitachi, Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX60-55829 19850322
- 主分类号： G11B7/085
- IPC分类号： G11B7/085 ; G11B7/09 ; G11B7/12
摘要：
Accessing method and an apparatus therefor in an optical disc apparatus having an acousto-optic light deflector for deflecting a light spot to a different address or different track on an optical disc are disclosed. An auto-focus signal is held at a constant level for a predetermined period when the acousto-optic light deflector deflects the light spot. Thus, an affect caused by coexistence of a plurality of acoustic frequencies in the acoustic-optic device is eliminated and fast light accessing is attained.
公开/授权文献
- US5834026A Water dispersible dietary composition 公开/授权日：1998-11-10