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Method for transmitting signal by wireless power transmitter in wireless charging system, wireless power transmitter and wireless power receiver

  • US 10,075,020 B2
  • Filed: 06/24/2015
  • Issued: 09/11/2018
  • Est. Priority Date: 06/24/2014
  • Status: Active Grant
First Claim
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1. A method of transmitting a signal by a wireless power transmitter in a wireless charging system, the method comprising:

  • transmitting a first beacon power for a first duration time in every first period;

    transmitting a second beacon power for a second duration time in every second period;

    detecting load changes while transmitting the second beacon power;

    in response to the detected load changes, extending the second duration time to a predetermined third duration time, wherein the predetermined third duration time is determined before the second beacon power is transmitted; and

    continually transmitting the second beacon power for the predetermined third duration time.

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