发明名称 |
Waveform signal processor with selective sampling |
摘要 |
To perform digital processing of cyclical waveform signals that include random noise with high accuracy and high reliability without being practically affected by the noise. This is a waveform signal processor into which cyclical waveform signals are input and which outputs corresponding signals. It samples a cyclical waveform signal a plurality of times and then, based upon the obtained sampling values, it performs a Fourier Transform for all the various cycles. Next, the phase angle of a pre-selected frequency component in the Fourier series is determined based upon the Fourier Transform. Then a sampling point at the same phase for all cycles is specified by using the phase angle as a reference. The average of the sampling values at the same phase is calculated and output.
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申请公布号 |
US5545988(A) |
申请公布日期 |
1996.08.13 |
申请号 |
US19940305368 |
申请日期 |
1994.09.13 |
申请人 |
TDK CORPORATION;NIHON TECHNO BUTE LIMITED |
发明人 |
SAKAI, MASANORI;TOMITA, KATSUHIKO;EZAKI, JOICHIRO;SUZUKI, KAZUO;FUKUDA, SEIJI;HATAKEYAMA, KOUICHI |
分类号 |
G11B5/012;G11B5/455;G11B20/10;G11B20/22;(IPC1-7):G11B5/455;G01R23/16;G11B20/24 |
主分类号 |
G11B5/012 |
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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