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System for transmitting ultrasonic short-range wireless power and method of charging ultrasonic wireless power

  • US 10,554,079 B2
  • Filed: 01/03/2019
  • Issued: 02/04/2020
  • Est. Priority Date: 06/13/2014
  • Status: Active Grant
First Claim
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1. An ultrasonic wireless power charging method performed by a transmission device and a reception device, comprising:

  • sensing a transmission device and a reception device which are within a range using signals generated by a communication unit of the transmission device and a communication unit of the reception device;

    transmitting a sensed signal of the transmission device to the reception device;

    transmitting a response signal of the reception device to the transmission device;

    forming a resonance frequency to match resonance frequencies of the transmission device and the reception device;

    receiving and recognizing a charged-state signal of the reception device by the transmission device; and

    charging a capacitor included in the reception device by receiving power transmitted using the resonance frequency of the transmission device.

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