Signal processing of audio and video data, including assessment of embedded data
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United States of America Patent
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Mar 5, 2013
Grant Date -
Nov 10, 2011
app pub date -
Jul 25, 2011
filing date -
Apr 16, 1998
priority date (Note) -
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Abstract
The present invention relates generally to signal processing of media content, e.g., audio or video content. One form of signal processing derives identifying information from media content. One claim recites a method including: upon encountering audio or video content, and using a programmed electronic processor, attempting to derive identifying information from data representing the encountered audio or video content; if a digital watermark is not obtained from the data representing the encountered audio or video content, modifying the encountered audio or video content; and then attempting to attempting to derive identifying information from data representing the modified audio or video content. Of course, other claims are provided too.
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