Signal processing device and radiation measurement device
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United States of America Patent
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May 29, 2018
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N/A
app pub date -
Jun 30, 2016
filing date -
Aug 25, 2015
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Abstract
A signal processing device for detecting a weak signal in an input signal. The device includes first and second pulse detectors and a determining circuit. The first pulse detector adds noise to the input signal, and processes the noise-added signal using a first threshold, to thereby output a first signal having a first pulse waveform component, which corresponds to an interval in which a level of the noise-added input signal exceeds the first threshold. The second pulse detector receives the input signal in parallel with the first pulse detector, and processes the input signal using a second threshold, to thereby output a second signal having a second pulse waveform component, which corresponds to an interval in which a level of the input signal exceeds the second threshold. The determining circuit determines whether each of the first and second pulse waveform components conforms to the weak signal.
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