Quasi-reprographics with variable embedded data with application

Details Quasi-reprographics with variable embedded data with application Quasi-reprographics with variable embedded data with application

1996-10-21

1999-05-04

Hayes, Gail O.

Cryptography

Cryptanalysis

380 51, 283113, 399366, H04L 900

Patent

active

059012242

ABSTRACT:
A method and apparatus for quasi-reprographically replicating a source document. The source document is digitized, appropriate locations for embedded code are detected, and any embedded code located in the digitized document along with the detected locations are forwarded to a decoder. The decoder forwards the decoded information to a control unit which processes this information and forwards it to a encoder whereafter it is inserted in the digitized document. The hardcopy replication of the source document being substantially visually identical to the source document, even though new or additional embedded machine-readable data has been added or existing data has been changed. The process occurs without intervention by an operator and without knowledge of the operator producing the replicated documents.

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