发明授权
US5659527A Optical disk drive with use of sampled preceding focus or tracking error
signal in response to detection of spiked noise or offset
失效
响应于尖峰噪声或偏移的检测，使用采样的先前聚焦或跟踪误差信号的光盘驱动器
- 专利标题： Optical disk drive with use of sampled preceding focus or tracking error signal in response to detection of spiked noise or offset
- 专利标题（中）： 响应于尖峰噪声或偏移的检测，使用采样的先前聚焦或跟踪误差信号的光盘驱动器
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申请号： US607489申请日： 1996-02-27
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公开(公告)号： US5659527A公开(公告)日： 1997-08-19
- 发明人: Takeshi Sasaki
- 申请人： Takeshi Sasaki
- 申请人地址： JPX Tokyo
- 专利权人： NEC Corporation
- 当前专利权人： NEC Corporation
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX7-038360 19950227
- 主分类号： G11B7/095
- IPC分类号： G11B7/095 ; G11B7/09
摘要：
By making the servo system insensitive to the spiked noise having high frequency components, a stable focus control and/or tracking control of an optical disk drive is realized. A digital signal processor is provided for sampling an output of an error detecting circuit for detecting an amount of deviation of control with a constant period to perform a phase compensation therefor and outputting a drive instruction value for the focus or track control on the basis of a signal sampled in a just preceding period when an error signal value sampled in a current period is larger than the error signal value sampled in the just preceding period.
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