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Dec 5, 2016
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Dec 7, 2015
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Abstract
A method for sonic acoustic beacon processing. The method may include constantly operating a microphone and a chip, even when an application processor is asleep; receiving by the microphone, while the application processor is asleep, an acoustic beacon; converting by the acoustic beacon to electrical signals representative of the acoustic beacon; receiving by the chip the electrical signals representative of the acoustic beacon; searching, by the chip and in the electrical signals representative of the acoustic beacon for a predefined preamble; when detecting the predefined preamble then decoding, by the chip, electrical signals representative of a rest of the acoustic beacon to provide digital data, and determining by the chip whether to awake the application processor; when determining to awake the application processor then participating, by the chip, in an awakening of the application processor; and sending, by the chip, the digital data to the application processor, after the awakening of the application processor.
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