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SYSTEMS AND METHODS FOR DETECTING AND IDENTIFYING A WIRELESS POWER DEVICE

  • US 20130062959A1
  • Filed: 05/04/2012
  • Published: 03/14/2013
  • Est. Priority Date: 09/09/2011
  • Status: Active Grant
First Claim
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1. An apparatus for detecting an object within a power delivery region of a wireless power transmitter configured to transfer power to a device having a wireless power receiver, the apparatus comprising:

  • a driver configured to generate a driving signal to drive a circuit to output a wireless power field;

    a sensor configured to sense an amount of power drawn by the driver to generate a sensing signal;

    a communication unit configured to receive, from the wireless power receiver, a signal indicative of a change in power received by the wireless power receiver; and

    a controller configured to monitor a change in a power drawn by the driver based on the sensing signal and identify the type of object based on at least one of the monitored change in the power drawn and the received signal.

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