发明名称 |
Method and apparatus for producing an accurate error signal in an optical recording medium driver |
摘要 |
When recording, reproducing or erasing data signal by illuminating a recording medium surface with a condensed light spot, a tracking sensor signal or a focusing sensor signal is detected from light reflected from the recording medium surface. The detected signal is subjected to current-to-voltage conversion, and the current-to-voltage conversion gain is switched by estimating reflected light power from the recording medium surface.
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申请公布号 |
US5007038(A) |
申请公布日期 |
1991.04.09 |
申请号 |
US19880226722 |
申请日期 |
1988.08.01 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
NAKANE, KAZUHIKO;FURUKAWA, TERUO;SHIMAMOTO, MASAYOSHI;YOSHIMOTO, KYOSUKE |
分类号 |
G11B7/00;G11B7/004;G11B7/0055;G11B7/09;G11B19/04 |
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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