Image analysis – Applications – Reading paper currency
Patent
1998-02-13
2000-07-25
Johns, Andrew W.
Image analysis
Applications
Reading paper currency
356 71, G06K 900
Patent
active
060945001
ABSTRACT:
A self-service deposit terminal (10) is arranged to authenticate bank notes by exposing them to ultra-violet (UV) light which causes forged notes comprising wood-based paper to fluoresce. Each note (36) is individually transported between a UV light tube (38) and a first photo-diode (40). The level of light emitted by the UV light tube is monitored by a second photo-diode (52). The amplified output of this second photo-diode acts as a threshold value. The amplified outputs of both photo-diodes are applied to a Schmitt trigger (60) which outputs a high signal if the tested note is judged to fluoresce and a low signal if it does not. The output of the Schmitt trigger (60) is applied to a data processing means (24) which determines either solely on this output, or in conjunction with the output from other validation means, whether the tested note is genuine or not.
REFERENCES:
patent: 3573472 (1971-04-01), Madalo
patent: 3774046 (1973-11-01), Hoch et al.
patent: 4296326 (1981-10-01), Haslop et al.
patent: 4435834 (1984-03-01), Pauli et al.
patent: 4558224 (1985-12-01), Gober
patent: 4756557 (1988-07-01), Kaule et al.
patent: 5592561 (1997-01-01), Moore
patent: 5607040 (1997-03-01), Mathurin, Sr.
patent: 5912982 (1999-06-01), Munro et al.
patent: 5918960 (1999-07-01), Hopwood et al.
Heelan Philip J.
Ross Gary A.
Conte Francis L.
Johns Andrew W.
Nakhjavan Shervin
NCR Corporation
LandOfFree
Apparatus for authenticating sheets does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for authenticating sheets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for authenticating sheets will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1342084