Wirelessly powered audio devices

  • US 9,544,683 B2
  • Filed: 10/17/2013
  • Issued: 01/10/2017
  • Est. Priority Date: 09/27/2008
  • Status: Active Grant
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First Claim
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1. A wirelessly powered audio device comprising:

  • an audio output element adapted to generate sounds audible to a user;

    a device resonator structure adapted to wirelessly receive energy via oscillating magnetic fields, the device resonator configured to reduce the interaction of the magnetic fields with the audio output element; and

    a power demand monitor adapted to monitor the power demands of the audio device and the power received via the device resonator structure, the power demand monitor further configured to cause the audio output element to generate an audible signal when the power demands of the audio device exceed the power delivered by the device resonator.

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