发明名称 |
Tracking Control Apparatus And Method, And Signal Processing Apparatus |
摘要 |
To improve a precision of tracking control. A tracking control apparatus includes a filter section ( 106 ) including a plurality of low-pass filters (LPFs). Each of the plurality of low-pass filters (LPFs) removes components having frequencies equal to or higher than a predetermined cutoff frequency from a corresponding received light quantity signal among a plurality of received light quantity signals output from light detection means ( 6 ). The tracking control apparatus includes: a tracking error detection section ( 104 ) for generating a tracking error signal indicating an amount of deviation of an optical beam spot from a track to be scanned on a recording surface of an optical disc by performing predetermined calculations with respect to a plurality of signals output from the filter section ( 106 ); and a tracking control section ( 102 ) for driving moving means ( 101 ) such that the optical beam spot follows the track on the recording surface of the optical disc in accordance with the tracking error signal.
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申请公布号 |
US2007217294(A1) |
申请公布日期 |
2007.09.20 |
申请号 |
US20040595476 |
申请日期 |
2004.10.22 |
申请人 |
TAKAHASHI RIE;WATANABE KATSUYA |
发明人 |
TAKAHASHI RIE;WATANABE KATSUYA |
分类号 |
G11B7/00;G11B7/09;G11B7/13 |
主分类号 |
G11B7/00 |
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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