G - Physics – 07 – D
Patent
G - Physics
07
D
354/57.1
G07D 7/00 (2006.01) G06K 9/00 (2006.01) G07D 7/04 (2006.01) G07D 7/12 (2006.01)
Patent
CA 1240059
ABSTRACT: The present invention relates to a method and apparatus for determining the authenticity and denomination of paper currency wherein the currency has a plurality of distinct areas each containing currency identifying characteristics. The method comprising the steps of scanning one of the areas with an electrical signal generating sensor and thereby generating a sequence of electrical signals in response to the currency identifying characteristics detected by the sensor in the area scanned. The method further comprises the steps of measuring the intervals between the generated signals, and classifying each of the measured intervals into one of a plurality of sets. The classification of each of the measured intervals is dependent upon the length of that interval. The method includes determining the difference between the number of intervals in one of the sets and the number of intervals in another of the sets.
492633
Barnes Elwood E.
Dobbins Bob M.
Kirby Eades Gale Baker
Mars Inc.
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