×

Optically-based system for processing banknotes based on security feature emissions

  • US 20020105654A1
  • Filed: 03/04/2002
  • Published: 08/08/2002
  • Est. Priority Date: 11/25/1997
  • Status: Active Grant
First Claim
Patent Images

1. A method for processing a banknote, comprising:

  • providing a banknote having at least one photonically active security feature, the banknote being moved along a conveyance path;

    illuminating the at least one security feature with light from a stimulus source;

    identifying a location of the at least one security feature by detecting an emission from the security feature;

    directing an excitation source at the identified location;

    illuminating the at least security feature with light from the excitation source; and

    detecting a further emission from the photonically active security feature in response to the light from the excitation source.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×