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POWER TRANSMISSION DEVICE, POWER TRANSMISSION AND RECEIVING DEVICE, METHOD FOR DETECTING POWER RECEIVING DEVICE, POWER RECEIVING DEVICE DETECTION PROGRAM, AND SEMICONDUCTOR DEVICE

  • US 20160226311A1
  • Filed: 03/11/2014
  • Published: 08/04/2016
  • Est. Priority Date: 03/22/2013
  • Status: Abandoned Application
First Claim
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1. A power transmission device which transmits an electric power to a power receiving device in a noncontact state by using a resonance circuit, comprising:

  • a control unit that sets a drive frequency of a signal for driving the resonance circuit;

    a drive unit that drives the resonance circuit at three or more drive frequencies on the basis of a setting of the control unit; and

    a drive waveform detecting unit that detects a drive waveform of the resonance circuit, whereinthe control unit sets the three or more drive frequencies, compares signal data at the drive frequencies detected by the drive waveform detecting unit with each other, and detects the power receiving device on the basis of the comparison result.

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