发明授权
US4787076A Optical disc tracking system with switching of tracking error signals at
boundary between track guide and track address
失效
光盘跟踪系统，在跟踪导轨和轨道地址之间的边界处切换跟踪误差信号
- 专利标题： Optical disc tracking system with switching of tracking error signals at boundary between track guide and track address
- 专利标题（中）： 光盘跟踪系统，在跟踪导轨和轨道地址之间的边界处切换跟踪误差信号
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申请号： US911410申请日： 1986-09-25
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公开(公告)号： US4787076A公开(公告)日： 1988-11-22
- 发明人: Toshihisa Deguchi , Tetsuya Inui , Kenji Ohta , Shohichi Katoh
- 申请人： Toshihisa Deguchi , Tetsuya Inui , Kenji Ohta , Shohichi Katoh
- 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： JPX60-215695 19850927; JPX60-245095 19851030
- 主分类号： G11B7/09
- IPC分类号： G11B7/09 ; G11B7/095 ; G11B21/10
摘要：
A tracking system for positioning a light spot onto a magneto-optic disc having a beam guide track preformatted thereon, includes a main light beam and two auxiliary light beams, and a circuit for switching between a low frequency component of a tracking error signal, detected by respective auxiliary light beam detectors, and a tracking error signal detected by a main light beam detector.
公开/授权文献
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