Don-Doff Detection using Antenna Detuning
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United States of America Patent
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Sep 10, 2015
app pub date -
Mar 7, 2014
filing date -
Mar 7, 2014
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Abstract
A wearable device having corresponding computer-readable media comprises: an antenna; a radio-frequency transmitter configured to provide radio-frequency signals to the antenna; a radio-frequency detector having an input electrically coupled to the antenna; an analog-to-digital converter electrically coupled to an output of the radio-frequency detector; and a controller configured to determine whether the wearable device is being worn based on an output of the analog-to-digital converter.
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