The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 09, 1986
Filed:
Oct. 10, 1984
Bob M Dobbins, Phoenixville, PA (US);
Elwood E Barnes, Parkesburg, PA (US);
Mars, Inc., McLean, VA (US);
Abstract
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.