Differential detection coin discrimination systems and methods for use with consumer-operated kiosks and the like
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United States of America Patent
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Dec 2, 2014
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app pub date -
Jan 22, 2014
filing date -
Nov 30, 2012
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Abstract
Systems and associated methods for coin discrimination are disclosed herein. In one embodiment, a method for discriminating coins includes obtaining an electromagnetic sensor signal of a coin, generating a contour signal by digitizing the sensor signal, identifying an active interval in the contour signal by eliminating the segments of the contour signal which are close to zero, and detecting the coin approach, pivot and departure points (coin features) from the contour signal in the active interval. The coin features can be compared to known values for different coins to discriminate the coin.
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