发明名称 |
Servo control apparatus for optical disc player |
摘要 |
A servo control apparatus of an optical pickup includes an extractor for extracting an error signal from the read signal; a driver for changing the servo position; an equalizer for equalizing the error signal to generate a drive signal; a calculator for calculating an integral value of the error signal for each predetermined angular section of rotation; a memory for storing each of the integral values for one rotation of the recording medium; a detector to detect an occurrence of a dropout; a calculator for calculating a variation by comparing the integral value for an angular section of rotation where the dropout occurred with a stored integral value for the identical angular section of rotation prior to the occurrence of the dropout; and a controller for changing an equalization characteristics of the equalizer in accordance with the variation.
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申请公布号 |
US6738327(B2) |
申请公布日期 |
2004.05.18 |
申请号 |
US20010836235 |
申请日期 |
2001.04.18 |
申请人 |
PIONEER CORPORATION |
发明人 |
TATEISHI KIYOSHI;KOBAYASHI MASAKI |
分类号 |
G11B7/09;G11B19/04;G11B21/10;(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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