发明授权
US6088308A System for creating, reading and writing on rotatable information
storage media, a tracking circuit for providing positioning information
失效
用于在可旋转信息存储介质上创建，读取和写入系统，用于提供定位信息的跟踪电路
- 专利标题： System for creating, reading and writing on rotatable information storage media, a tracking circuit for providing positioning information
- 专利标题（中）： 用于在可旋转信息存储介质上创建，读取和写入系统，用于提供定位信息的跟踪电路
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申请号： US23550申请日： 1998-02-13
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公开(公告)号： US6088308A公开(公告)日： 2000-07-11
- 发明人: Lawrence Jacobowitz , Casimer M. DeCusatis
- 申请人： Lawrence Jacobowitz , Casimer M. DeCusatis
- 申请人地址： NY Armonk
- 专利权人： International Business Machines Corporation
- 当前专利权人： International Business Machines Corporation
- 当前专利权人地址： NY Armonk
- 主分类号： G11B7/00
- IPC分类号： G11B7/00 ; G11B7/007 ; G11B7/09 ; G11B7/14
摘要：
A photodetector and a threshold detector are employed to determine from which side (left or right) of an embedded track light is being reflected from. This information is encoded in the light signal reflected from a rotatable storage medium by oscillatorily moving a laser beam back and forth across an edge of the embedded track. A waveform detector provides a signal, based on the output of the photodetector, which provides an indication of distance away from the edge of a subject track. The output of the threshold detector and waveform detector drive an up-down counter which thus associates a unique binary number with each information track.
公开/授权文献
- US5311027A Apparatus and method for uniformly irradiating a strand 公开/授权日：1994-05-10
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