Patent ID: 11870271
Assignee: LG ELECTRONICS INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 2:
3. A wireless power transmitter comprising:
a power conversion circuit being configured to transmit wireless power to a wireless power receiver by using a primary coil, the primary coil having formed magnetic coupling with the wireless power receiver in an operating frequency; and
a communication/control circuit being configured to perform out-band communication with the wireless power receiver using frequencies other than the operating frequency,
wherein the wireless power transmitter is configured to:
receive, from the wireless power receiver, a configuration (CFG) packet,
wherein the CFG packet includes an out-band packet informing whether the out-band communication is supported;
establish a connection of the out-band communication with the wireless power receiver;
transmit, to the wireless power receiver, a firmware transmission request through the out-band communication; and
receive, from the wireless power receiver, firmware information through the out-band communication,
wherein the wireless power receiver and the wireless power transmitter exchange the firmware information which is longer than a maximum transmission unit (MTU) based on repeating a blob request and a blob response by increasing an offset value as much as the MTU.