发明授权
US5970033A Tracking control unit for optical disk drive capable of suppressing
control residual derived from disturbance
失效
用于光盘驱动器的跟踪控制单元,其能够抑制来自扰动的控制残差
- 专利标题: Tracking control unit for optical disk drive capable of suppressing control residual derived from disturbance
- 专利标题(中): 用于光盘驱动器的跟踪控制单元,其能够抑制来自扰动的控制残差
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申请号: US928470申请日: 1997-09-12
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公开(公告)号: US5970033A公开(公告)日: 1999-10-19
- 发明人: Junichi Nakano , Takeru Hokkezu
- 申请人: Junichi Nakano , Takeru Hokkezu
- 申请人地址: JPX Tokyo
- 专利权人: Olympus Optical Co., Ltd.
- 当前专利权人: Olympus Optical Co., Ltd.
- 当前专利权人地址: JPX Tokyo
- 主分类号: G11B7/085
- IPC分类号: G11B7/085 ; G11B7/09 ; G11B7/095
摘要:
A tracking control unit for an optical disk drive comprises a TES detection circuit for detecting a tracking error signal (TES) in an output of a photodetector included in a stationary optical system, a frictional state prediction circuit for predicting a frictional state between guide shafts and a carriage on the basis of the TES detected by the TES detection circuit, a phase compensation filter for compensating for a phase difference of the TES detected by the TES detection circuit so as to stabilize a tracking control system on the basis of the result of the prediction performed by the frictional state prediction circuit, and a driver for moving the carriage in a direction in which a tracking error can be corrected for according to an output of the phase compensation filter and for thus controlling tracking.
公开/授权文献
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