Secure document design carrying auxiliary machine readable information
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United States of America Patent
Stats
-
Oct 23, 2007
Grant Date -
Nov 20, 2003
app pub date -
Jun 11, 2003
filing date -
Mar 17, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A two dimensional pattern design for secure documents serves as both a machine readable code and an aesthetic part of the documents' design. A method for generating the design generates a variable auxiliary message comprising message values and maps the message values to a two dimensional pattern of areas on the document. The areas each comprise an arrangement of pixels on the printed document. Depending on a value of the message mapped to a corresponding area, the method assigns a visible structure to the corresponding area. Different visible structures are assignable to a single value of the message to create a visible design having a desired aesthetic appearance.
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Cited Art Landscape
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