Record with encoded data

Details Record with encoded data Record with encoded data

1992-06-01

1994-08-09

Cain, David C.

Cryptography

Electric signal modification

Having production of printed copy

380 23, 380 55, 380 3, 380 59, 235462, H04L 900

Patent

active

053373618

ABSTRACT:
A record contains a graphic image and an information area which are interrelated to discourage misuse of the record. The information area can overlay the graphic image and include information encoded in a error-correctable, machine-readable format which allows recovery of the information despite distortion due to the underlying graphic image. The record may also represent the image by words similar in form to words in the information area. Both the information and graphic words can then be altered when an action regarding the record takes place.

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Wang et al., "Postal Applications of a High Density Bar Code" (Sep. 1990).
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