Patent ID: 9698620
Date: 2017-07-04
CPC Classifications: H02J,H04B

Claim:
1. A method for charging at least one device by a power transmitter in a wireless charging environment, the method comprising: broadcasting a discovery request; determining whether a discovery response is received in response to the discovery request from at least one device within a wait time; retransmitting the discovery request if the discovery response is not received from the at least one device within the wait time; transmitting, to the at least one device transmitting the discovery response, confirmation information if the discovery response is received from the at least one device within the wait time; and transmitting electromagnetic radiation to charge the at least one device if the discovery response is received from the at least one device within the wait time and an acknowledgment is received from the at least one device in response to the confirmation information, wherein the wait time is configured to be less than a threshold response time, and wherein the retransmitting of the discovery request is stopped after a predetermined number of times.