Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate
2004-12-15
2010-12-07
Barron, Jr., Gilberto (Department: 2434)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
C705S062000
Reexamination Certificate
active
07849317
ABSTRACT:
The present invention uses an element of digital data that is created during digital postage mark (DPM) generation process from the digital image of the destination address block. The digital data is included into recoverable portion of the digital signature and imprinted on a mailpiece. During DPM verification, a representative portion of a destination address block image is retrieved in its original form from the digital signature itself. The retrieved portion of the image then can be compared with the similar digital data obtained from the scanned destination address block obtained during normal mail scanning and processing activities. If the comparison is under a predetermined threshold, then the DPM is declared authentic and the mailpiece can be processed and delivered with confidence. If, on the other hand, the threshold is not met, the DPM is declared a copy or a counterfeit of another DPM and the mailpiece can be subjected to further investigation.
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Euchner James A.
Martin Murray D.
Pintsov Leon A.
Barron Jr. Gilberto
Bayou Yonas
Chaclas Angelo N.
Cummings Michael J.
Pitney Bowes Inc.
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