Digital watermarks
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United States of America Patent
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Aug 28, 2007
Grant Date -
Nov 27, 2003
app pub date -
Mar 3, 2003
filing date -
May 8, 1995
priority date (Note) -
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Abstract
An iterative encoding technique assesses trial watermark encoding of an object, and redresses any detected shortcomings in one or more successive re-encodings of the object. Other improvements concern web crawler-based watermark detectors, novel uses of meta-data in watermarks, applications of watermarks in merchandising, embedding of active computer code via watermarks, watermark-based asset management systems, watermark processing of computer system clock signals, and watermarks in labels and tags.
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