发明名称 |
Frequency comparator and clock regenerating device using the same |
摘要 |
A frequency comparator includes a circuit comparing, independently of a phase relationship between first and second clocks, frequencies of the first and second clocks and outputting first and second detection signals when the first clock has frequencies higher and lower than those of the second clock, respectively. The first and second detection signals are output for respective times based on a difference between the frequencies of the first and second clocks.
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申请公布号 |
US6392494(B2) |
申请公布日期 |
2002.05.21 |
申请号 |
US19980115952 |
申请日期 |
1998.07.15 |
申请人 |
FUJITSU LIMITED |
发明人 |
TAKEYABU MASATO;KIKUCHI AKIRA;SAKAI TOSHIYUKI |
分类号 |
H03K5/26;G01R25/00;H03D13/00;H03L7/07;H03L7/085;H03L7/087;H03L7/089;H03L7/14;H04L7/033;(IPC1-7):H03L7/087 |
主分类号 |
H03K5/26 |
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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