Radiant energy – Luminophor irradiation
Reexamination Certificate
2006-05-17
2009-02-24
Hannaher, Constantine (Department: 2884)
Radiant energy
Luminophor irradiation
C250S459100
Reexamination Certificate
active
07495234
ABSTRACT:
A device for validating a secure tag comprises: an optical source (such as one or more LEDs); a processor coupled to the optical source for controlling emissions therefrom; and a luminescence detector coupled to the processor. The processor is programmed to control the optical source to create a first and a second pulse sequence having first and second excitation parameters respectfully. The processor is also programmed to control the luminescence detector to measure first and second luminescence in response to the first and second pulse sequences respectively. The processor is programmed to validate the secure tag in the event that the first and second luminescence meet an acceptance criterion. A method of validating a secure tag is also described.
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Hannaher Constantine
Maney Charles Q.
NCR Corporation
Ricci Christopher P.
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