Method of using plural watermarks to prevent unauthorized image copying
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United States of America Patent
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-
Jan 2, 2007
Grant Date -
Sep 27, 2001
app pub date -
Feb 27, 2001
filing date -
Feb 29, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An increasing number of people are employing a variety of methods of editing and processing digital content in an effort to illegally copy the content. It is difficult to develop digital watermark technology that is able to withstand all types of editing and processing. The present invention addresses the foregoing problems by providing a digital content processing method comprising performing a plurality of copyright protection processes on digital content, each copyright protection process differing in difficulty of being analyzing, and distributing the processed digital content.
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