Wireless, batteryless, audio communications device
First Claim
Patent Images
1. A wireless, batteryless, audio communications device, comprising:
- a first sound transducer, the first sound transducer operable to convert sound energy into electrical energy in the form of electrical signals;
at least a first antenna; and
a first passive circuit operatively coupled to the first sound transducer and to the first antenna to modulate at least some carrier waves received via the first antenna based on the electrical signals from the sound transducer, and to cause the audio communications device to backscatter the modulated carrier waves.
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Abstract
A wireless, batteryless microphone includes an antenna and passive circuitry to backscatter a carrier wave signal modulated with audio information from a sound transducer. A wireless, batteryless speaker or headphone includes an antenna and passive circuitry to drive a sound transducer based on a received modulated carrier wave. A headset may include a wireless, batteryless microphone and one or more wireless, batteryless speakers or headphones.
36 Citations
25 Claims
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1. A wireless, batteryless, audio communications device, comprising:
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a first sound transducer, the first sound transducer operable to convert sound energy into electrical energy in the form of electrical signals; at least a first antenna; and a first passive circuit operatively coupled to the first sound transducer and to the first antenna to modulate at least some carrier waves received via the first antenna based on the electrical signals from the sound transducer, and to cause the audio communications device to backscatter the modulated carrier waves. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A wireless, batteryless, audio communications device, comprising:
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antenna means for receiving carrier waves; transducer means for producing electrical signals in response to sound; and passive circuit means for modulating at least some of the received carrier waves with electrical signals from the first transducer means, and backscattering the modulated carrier waves from the audio communications device. - View Dependent Claims (15, 16, 17)
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18. A method of operating a wireless, batteryless, audio communications device, the method comprising:
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receiving carrier waves at a first antenna; modulating at least some of the received carrier waves at a first passive circuit with audio signals from a first sound transducer; and backscattering the modulated carrier waves from the audio communications device. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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Specification