发明名称 |
Tracking control apparatus for an optical disk device |
摘要 |
The temperature around the tracking actuator is detected with a temperature sensor, and the characteristics of an equivalent digital filter are changed to match the characteristics of the tracking actuator at the detected temperature. When the temperature is low, a current is applied to the focus control coil to raise the temperature of the tracking actuator, thereby essentially matching the transfer functions of the tracking actuator and the equivalent filter.
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申请公布号 |
US5331615(A) |
申请公布日期 |
1994.07.19 |
申请号 |
US19920964784 |
申请日期 |
1992.10.22 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
YAMADA, SHINICHI;MORIYA, MITSURO;SHIBANO, MASAYUKI;YAMAGUCHI, HIROYUKI |
分类号 |
G11B7/09;(IPC1-7):G11B7/00 |
主分类号 |
G11B7/09 |
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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