On head detection by capacitive sensing BCT
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United States of America Patent
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Jun 12, 2018
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app pub date -
Dec 4, 2015
filing date -
Dec 4, 2015
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Abstract
The present application describes on-head detection by a capacitive sensing bone conduction transducer (BCT) system and applications thereof. An example apparatus includes a wearable computing device comprising: (1) the BCT comprising a transducer coupled to a BCT frame, wherein (a) the BCT frame couples the BCT to a component of the wearable computing device, (b) at least a portion of the BCT frame is conductive, wherein the conductive portion of the BCT frame is arranged to capacitively couple the BCT to a wearer when the wearable computing device is worn, and (c) the BCT is configured to receive and be driven by an audio signal; (2) a capacitive sensor controller; and (3) at least one connective component that further couples the conductive portion of the BCT frame to the capacitive sensor controller.
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