(19)
(11) EP 0 319 524 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
20.09.1989 Bulletin 1989/38

(43) Date of publication A2:
07.06.1989 Bulletin 1989/23

(21) Application number: 89102127.1

(22) Date of filing: 04.10.1985
(51) International Patent Classification (IPC)4: G07D 7/00
(84) Designated Contracting States:
AT BE CH DE FR GB IT LI LU NL SE

(30) Priority: 10.10.1984 US 659411

(62) Application number of the earlier application in accordance with Art. 76 EPC:
85307126.4 / 0178132

(71) Applicant: MARS INCORPORATED
McLean Virginia 22101-3883 (US)

(72) Inventors:
  • Dobbins, Bob M.
    Phoenixville Pennsylvania 19460 (US)
  • Barnes, Elwood E.
    Parkesburg Pennsylvania 19365 (US)

(74) Representative: Burke, Steven David et al
R.G.C. Jenkins & Co. 26 Caxton Street
London SW1H 0RJ
London SW1H 0RJ (GB)


(56) References cited: : 
   
       


    (54) Method and apparatus for currency validation


    (57) An improved currency validator (1) has one or more sensors (18;24;30) positioned along a bill passageway (4) for testing a bill transported along the bill passageway and for generating electrical signals in response to certain features of the bill. Data derived from the electrical signals is processed by a logic circuit, such as microprocessor (102), to determine the authenticity and denomination of the bill, The data may be normalized during its processing. Either or both a histogram technique or a percent denomination space technique may be used in determining the authenticity and denomination of the bill.







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