Halftone watermarking and related applications
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Oct 23, 2007
Grant Date -
Sep 21, 2006
app pub date -
Jan 31, 2006
filing date -
Oct 11, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention relates generally to digital watermarking. In one embodiment, a method of detecting copying of a printed object is provided. In another embodiment, a method is provided to measure digital watermark strength. In yet another embodiment, and for printing applications, an embedded digital watermark may be used to carry printer information that is later decoded by a watermark decoder and used to examine a digital scan of a printed object and determine whether the printed object is authentic. Other embodiments are provided as well.
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