发明授权
US5287339A Optical information processing apparatus for holding a lens at a
predetermined position along a tracking path at pulling-in of focusing
control
失效
光学信息处理设备，用于在聚焦控制的拉入期间沿着跟踪路径将透镜保持在预定位置
- 专利标题： Optical information processing apparatus for holding a lens at a predetermined position along a tracking path at pulling-in of focusing control
- 专利标题（中）： 光学信息处理设备，用于在聚焦控制的拉入期间沿着跟踪路径将透镜保持在预定位置
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申请号： US13227申请日： 1993-02-01
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公开(公告)号： US5287339A公开(公告)日： 1994-02-15
- 发明人: Yoshihiko Watanabe
- 申请人： Yoshihiko Watanabe
- 申请人地址： JPX Tokyo
- 专利权人： Canon Kabushiki Kaisha
- 当前专利权人： Canon Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX63-038727 19880223
- 主分类号： G11B7/085
- IPC分类号： G11B7/085 ; G11B7/09 ; G11B7/00
摘要：
An optical information processing apparatus for irradiating a focused light beam to an optical recording medium to record and/or reproduce information. The apparatus includes a device for focus-controlling the light beam, a focus pull-in device for switching the focus control device from an inactive state to an active state, a device for moving an irradiation position of the light beam in a surface of the medium to effect tracking control, and a device for holding the light beam at a center of a movable range by the tracking control device, during the focus pull-in.
公开/授权文献
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