Capacitance sensor with improved noise filtering characteristics, method for noise filtering of capacitance sensor and computer-readable recording medium
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United States of America Patent
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Jan 3, 2017
Grant Date -
Dec 27, 2012
app pub date -
Jun 25, 2012
filing date -
Jun 24, 2011
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Abstract
Disclosed is a capacitance sensor including: a capacitance-voltage/current converter which converts a capacitance value of a sense capacitor into a voltage signal or a current signal by using an input signal; a multiplier which applies a weight to an output signal of the capacitance-voltage/current converter and outputs the weighted output signal; and an accumulator which accumulates continuously the output signal of the multiplier.
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