发明名称 |
FREQUENCY ERROR DETECTION APPARATUS |
摘要 |
Embodiments are provided: a known signal extraction circuit a distributing arrangement circuit which distributes a known signal in a fixed section; a frequency conversion circuit which causes the distributed output to be a frequency-domain signal; a delay detection circuit which determines an amount of phase variation between adjacent frequency components in the frequency-domain signal; a distributing arrangement circuit which distributes a signal of the same sequence as the known signal described above in a fixed section; a frequency conversion circuit which causes the distributed output to be a frequency-domain signal; a delay detection circuit which determines an amount of phase variation between adjacent frequency components in the frequency-domain signal; a correlation operation circuit which obtains a correlation value between two delay detection outputs; and a peak detection circuit which detects one or more high power peaks among the correlation values and obtain frequency difference from a reference value.
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申请公布号 |
US2012242324(A1) |
申请公布日期 |
2012.09.27 |
申请号 |
US201113233229 |
申请日期 |
2011.09.15 |
申请人 |
SASAHARA SHOICHI;FURUKAWA TATSUHISA;KABUSHIKI KAISHA TOSHIBA |
发明人 |
SASAHARA SHOICHI;FURUKAWA TATSUHISA |
分类号 |
G01R23/02 |
主分类号 |
G01R23/02 |
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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