Waveform signal processor with selective sampling

Details Waveform signal processor with selective sampling Waveform signal processor with selective sampling

1994-09-13

1996-08-13

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

Magnetic information storage element testing

324 7621, 324 7624, 327551, 360 39, 364574, 364576, 369 60, G11B 5455, G11B 2024, G01R 2316

Patent

active

055459889

ABSTRACT:
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.

REFERENCES:
patent: 4710686 (1987-12-01), Guzik
patent: 4720674 (1988-01-01), Takeuchi et al.

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