WIRELESSLY POWERED AUDIO DEVICES
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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Abstract
Techniques herein provide wireless energy transfer to audio devices such as headphones, headsets, hearing aids, and the like. Audio devices are integrated with a device resonator. The device resonator may be positioned and oriented to reduce interaction with lossy or sensitive components of the audio device. A repeater resonator and/or a source resonator is integrated into a headrest of a seat or a chair providing continuous power to the headphones while in use. The audio devices may be recharged wirelessly when positioned near source resonators that may be embedded in pads, tables, carrying cases, cups, and the like.
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Citations
20 Claims
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1. A wirelessly powered audio device comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A wirelessly powered headphones, the headphones comprising:
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a speaker element comprising a diaphragm and an actuator; 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 speaker element; and a power demand monitor adapted to monitor the power demands of the headphones and the power received via the device resonator structure, the power demand monitor further configured to cause the speaker element to generate an audible signal when the power demands of the audio device exceed the power delivered by the device resonator. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. A method for wirelessly powering of an audio device, the method comprising:
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initiating wireless energy transfer from a wireless energy source; monitoring, using a power demand monitor, a power demand of the audio device; monitoring, using a noise monitor, the noise of an audio signal due to the wireless energy transfer; adjusting energy transfer to a minimum level that satisfies the power demand of the audio device; and filtering a noise component from the audio signal.
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Specification