Wireless methods and devices employing plural-bit data derived from audio information
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United States of America Patent
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Feb 5, 2013
Grant Date -
Nov 25, 2010
app pub date -
May 11, 2010
filing date -
Apr 25, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
A portable wireless device includes a processor portion, which is adapted to process audio information in two different ways, for two different purposes. One is to help generate a signal that drives a speaker of the device, so that a user can listen thereto. Another is to process audio information to derive plural-bit data therefrom. The device can then take an action based on the derived plural-bit data. In one particular arrangement, the processor is configured as a steganographic decoder. A variety of other features and arrangements are also detailed, including image-based methods, and arrangements employing various types of fingerprinting.
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