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Wireless power charging method and apparatus

  • US 9,444,282 B2
  • Filed: 03/14/2011
  • Issued: 09/13/2016
  • Est. Priority Date: 03/12/2010
  • Status: Active Grant
First Claim
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1. A wireless charging method of a first electronic device, comprising:

  • searching for at least one second electronic device, wherein the at least one second electronic device is chargeable;

    obtain status information related to a power state of the at least one second electronic device and the first electronic device;

    identifying whether the first electronic device is a power supply electronic device or a power demand electronic device, based on the obtained status information;

    receiving power, from the at least one second electronic device, based on a providable power amount determined by the at least one second electronic device, if the first electronic device is identified as the power demand electronic device;

    repeatedly receiving a charging information message from the at least one second electronic device while receiving the determined providable power amount;

    if the charging information message is not received from the at least one second electronic device within a predetermined time, identifying that the wireless charging is interrupted; and

    if the charging information message is received from the at least one second electronic device within the predetermined time, transmitting a charging information response message,wherein the charging information message includes information indicating an amount of power applied by the second electronic device.

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