SYSTEM AND METHOD FOR COMBINED OPTICAL AND ULTRA SONIC DETECTION OF BANK NOTES
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United States of America Patent
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Issued Date -
Feb 19, 2015
app pub date -
Aug 15, 2013
filing date -
Aug 15, 2013
priority date (Note) -
Abandoned
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Abstract
Methods and systems for automated detection of a transparent gap present between subsequent bank notes undergoing high-speed processing are disclosed. A system for distinguishing between bank notes in a bank note processing machine comprises a conveyance device for transporting a bank note along a transport path and a detector comprising an optical sensor and an ultrasonic sensor disposed at a desired location along the path. The optical sensor identifies a transparent region at the desired location and the ultrasonic sensor determines if the transparent region corresponds to a transparent gap.
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