发明名称 |
Digital tracking and focus servo system with TES to FES crosstalk calibration |
摘要 |
A servo system that calibrates a cross-talk gain parameter in a tracking error signal to focus error signal crosstalk correction is provided. The cross-talk gain parameter can be optimized such that the effects of a perturbation applied to the tracking servo loop on an adjusted focus error signal, i.e. a focus error signal that has been corrected for crosstalk, is minimized. The optimized cross-talk gain, then, can be set to the cross-talk gain of a set of cross-talk gains that results in the lowest value of a frequency component of the adjusted focus error signal while a perturbation at the frequency is being applied to the tracking servo loop.
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申请公布号 |
US2002141302(A1) |
申请公布日期 |
2002.10.03 |
申请号 |
US20010950396 |
申请日期 |
2001.09.10 |
申请人 |
KADLEC RON J.;WATT CHARLES R.;WACH HANS B. |
发明人 |
KADLEC RON J.;WATT CHARLES R.;WACH HANS B. |
分类号 |
G11B7/09;G11B7/095;(IPC1-7):G11B7/095 |
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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