04628194 is referenced by 192 patents and cites 8 patents.

An improved currency validator having an electrical signal generating sensor for scanning an area of a bank note and generating a sequence of electrical signals in response to the currency identifying characteristics detected by the sensor in the area scanned is described. Circuitry is provided for measuring the intervals between the generated signals, classifying each of the measured intervals into one of a plurality of sets and determining the difference between the number of intervals in one of said sets and the number of intervals in another of said sets. By comparing the above difference with a constant, information concerning the validity or denomination of the bank note is obtained. Additional circuitry is described for normalizing measured intervals and set bounds to take into effect variations in the speed of transport of banknotes which are to be discriminated.

Title
Method and apparatus for currency validation
Application Number
6/659411
Publication Number
4628194
Application Date
October 10, 1984
Publication Date
December 9, 1986
Inventor
Elwood E Barnes
Parkesburg
PA, US
Bob M Dobbins
Phoenixville
PA, US
Agent
Davis Hoxie Faithfull & Hapgood
Assignee
Mars
VA, US
IPC
G06F 15/30
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