发明名称 |
Optical disk apparatus and PLL circuit |
摘要 |
This invention relates to an optical disk apparatus for optically reproducing information recorded on an information carrier by an optical beam emitted by a light source, the optical disk apparatus comprising: a converging section for directing the optical beam to the information carrier in a converged state; a light detection section for generating a reproduction signal corresponding to the optical beam reflected by or transmitted through the information carrier; a waveform equalization section for varying a frequency characteristic of the reproduction signal generated by the light detection section; a jitter measuring section for measuring a jitter of a signal output from the waveform equalization section; and a minimum jitter value searching section for determining a minimum value of the jitter in an initial area of an X-Y plane defined by a variable x and a variable y which can vary the jitter measured by the jitter measuring section. A PLL circuit is disclosed.
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申请公布号 |
US6680887(B2) |
申请公布日期 |
2004.01.20 |
申请号 |
US20010853086 |
申请日期 |
2001.05.10 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
SHIHARA TETSUYA;NARUTANI TAKASHI;WATANABE KATSUYA |
分类号 |
G11B7/005;G11B7/095;G11B20/10;H03L7/08;H03L7/089;(IPC1-7):G11B7/00 |
主分类号 |
G11B7/005 |
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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