Patent ID: 11949254
Assignee: LG ELECTRONICS INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A wireless power receiver comprising:
a power pickup circuit configured to:
receive a wireless power from a wireless power transmitter by a magnetic coupling with the wireless power transmitter having a primary coil at an operating frequency, and
convert an AC signal generated by the wireless power into a DC signal;
a communication circuit configured to:
perform an in-band communication with the wireless power transmitter using the operating frequency, and
perform an out-band communication with the wireless power transmitter or other device using a frequency other than the operating frequency; and
a control circuit configured to control an overall operation of the wireless power receiver,
wherein the communication circuit in the wireless power receiver includes:
a first out-band communication module configured to perform the out-band communication with the other device using the frequency other than the operating frequency; and
a second out-band communication module configured to perform the out-band communication with the wireless power transmitter using the frequency other than the operating frequency,
wherein, according to the second out-band communication module operating as a scanner, the second out-band communication module shares information about a scan record with the first out-band communication module,
wherein, according to the second out-band communication module operating as a master after the second out-band communication module operating as the scanner connects with the wireless power transmitter, the second out-band communication module shares scheduling information with the first out-band communication module,
wherein the second out-band communication module receives or transmits information related to a wireless charging from or to the wireless power transmitter, and
wherein, according to the second out-band communication module receiving a retransmission request for a packet transmitted by the wireless power receiver from the wireless power transmitter, the second out-band communication module reshares the scheduling information with the first out-band communication module.