发明名称 |
Phase locked state detecting apparatus and image processing apparatus |
摘要 |
There is provided a phase locked state detecting apparatus for accurately detecting whether or not a phase locked state is canceled, the phase locked state detecting apparatus includes a comparator 17 for comparing a phase of a processing clock signal Smc generated by a phase locked loop for use in an information processing with a phase of a reference clock signal Src; an edge counter 18 for detecting a change of a frequency of the processing clock signal Smc; and a CPU 19 for judging to based on a phase comparison result whether or not the processing clock signal Smc is in the phase locked state with respect to the reference clock signal Src, and subsequently judging based on a detection result of the frequency change whether or not the phase locked state is canceled.
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申请公布号 |
US2004090275(A1) |
申请公布日期 |
2004.05.13 |
申请号 |
US20030685592 |
申请日期 |
2003.10.16 |
申请人 |
PIONEER CORPORATION |
发明人 |
MATSUMARU MAKOTO;MINOSHIMA KUNIHIRO |
分类号 |
G11B20/14;H03L7/095;H04L7/033;(IPC1-7):H03L7/00 |
主分类号 |
G11B20/14 |
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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