发明名称 |
Asymmetry detection apparatus, jitter detection apparatus, and recording/reproduction apparatus |
摘要 |
An asymmetry detection apparatus includes: a clock signal generator for generating a clock signal based on a reproduced signal; an A/D converter for sampling the reproduced signal in synchronization with the clock signal; a determiner for determining whether a level of each of a plurality of sampled data obtained by the sampling operation is equal to or greater than a predetermined level; and a detector for detecting asymmetry in the reproduced signal by using predetermined ones of the sampled data based on an output from the determiner. A jitter detection apparatus includes: a clock signal generator for generating a clock signal based on a reproduced signal; an A/D converter for sampling the reproduced signal in synchronization with the clock signal; a determiner for determining whether a level of each of a plurality of sampled data obtained by the sampling operation is equal to or greater than a predetermined level; and a detector for detecting jitter in the reproduced signal by using predetermined ones of the plurality of sampled data based on an output from the determiner.
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申请公布号 |
US6807134(B2) |
申请公布日期 |
2004.10.19 |
申请号 |
US20000749079 |
申请日期 |
2000.12.27 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
NAKAJIMA TAKESHI;KONISHI SHINICHI;MIYASHITA HARUMITSU;TAKAHASHI TOSHIHIKO |
分类号 |
G11B7/005;G11B7/125;G11B20/10;G11B20/14;G11B20/24;(IPC1-7):G11B5/09 |
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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