Patent ID: 11949467
Assignee: LG ELECTRONICS INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A wireless power transmitter supporting heterogeneous communication, comprising:
a power conversion unit configured to transmit a digital ping signal or wireless power to a wireless power receiver through magnetic coupling with the wireless power receiver at an operating frequency; and
a communication/control unit configured to perform at least one of in-band communication based on the operating frequency or out-band communication based on a frequency other than the operating frequency,
wherein the communication/control unit receives, from the wireless power receiver, a combined signal strength packet including at least one of information for a strength of the digital ping signal or information for switching to the out-band communication through the in-band communication,
wherein the combined signal strength packet includes a signal strength value field including information for the strength of the digital ping signal,
wherein the signal strength value field informs the strength of the digital ping signal based on a signal strength value belonging to a first range and the signal strength value field informs the switching to the out-band communication based on the signal strength value not belonging to the first range,
wherein the communication/control unit performs an operation of receiving a signal strength packet for each of a plurality of coils included in the power conversion unit, and
wherein the power conversion unit transmits the digital ping signal using an operating coil selected based on the signal strength packet and the communication/control unit receives the combined signal strength packet including information about the switching to the out-band communication in response to the digital ping signal.