发明名称 |
Tracking control unit for optical disk drive capable of suppressing control residual derived from disturbance |
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.
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申请公布号 |
US5970033(A) |
申请公布日期 |
1999.10.19 |
申请号 |
US19970928470 |
申请日期 |
1997.09.12 |
申请人 |
OLYMPUS OPTICAL CO., LTD. |
发明人 |
NAKANO, JUNICHI;HOKKEZU, TAKERU |
分类号 |
G11B7/085;G11B7/09;G11B7/095;(IPC1-7):G11B7/09 |
主分类号 |
G11B7/085 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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