SIGNAL PROCESSING DEVICE AND RADIATION MEASUREMENT DEVICE

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...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KOIZUMI Kazuhiro, ASANO Takamasa, MASUNAGA Yasuyuki
Format:	Patent
Sprache:	eng
Schlagworte:	MEASUREMENT OF NUCLEAR OR X-RADIATION MEASURING PHYSICS TESTING
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	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.