Geographic-based watermarking keys
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United States of America Patent
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May 17, 2011
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N/A
app pub date -
Feb 24, 2006
filing date -
Feb 24, 2006
priority date (Note) -
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Abstract
The disclosure relates generally to digital watermarking and steganography, e.g., for use with cell phones and signal processing. One claim recites a method including, in a cell phone, determining a current geographic are of the cell phone; selecting a first digital watermark detector that is associated with the current geographic area, a selected first digital watermark detector being selected from a plurality of different digital watermark detectors; and controlling the cell phone to employ the selected first digital watermark detector to analyze a signal to obtain a digital watermark message there from, wherein the selected first digital watermark detector corresponds to a particular digital watermark embedder that is uniquely assigned to the geographic area. Other claims and combinations are provided too.
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