Patent ID: 11949250
Assignee: LG ELECTRONICS INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. A method for receiving a wireless power from a wireless power transmitter in a wireless power transfer system, the method performed by a wireless power receiver and comprising:
transmitting, to the wireless power transmitter, a first received power packet,
receiving, from the wireless power transmitter, acknowledgement (ACK) in response to the first received power packet, based on that the wireless power transmitter has accepted a first received power value from the first received power packet,
transmitting, to the wireless power transmitter, a second received power packet,
receiving, from the wireless power transmitter, ACK in response to the second received power packet, based on that the wireless power transmitter has accepted a second received power value from the second received power packet,
transmitting, to the wireless power transmitter, a third received power packet, and
receiving, from the wireless power transmitter, ACK in response to the third received power packet, based on that the wireless power transmitter has accepted a third received power value from the third received power packet,
wherein a value of a mode field included in the second received power packet and a value of a mode field included in the third received power packet are the same,
wherein a value of a mode field included in the first received power packet is different from the value of the mode field included in the second received power packet,
wherein the value of the mode field included in the first received power packet is different from the value of the mode field included in the third received power packet,
wherein the value of the mode field included in the first received power packet informs that the first received power value is a first calibration data point,
wherein the value of the mode field included in the second received power packet informs that the second received power value is one additional calibration data point,
wherein the value of the mode field included in the third received power packet informs that the third received power value is another additional calibration data point,
wherein a power calibration is only supported when the wireless power transmitter supports an extended power profile (EPP) used for above 5 W,
wherein the EPP is different from a baseline power protocol (BPP) used for up to 5 W,
wherein, during a power transfer phase, the power calibration is performed based on multi-points including the first calibration data point, the one additional calibration data point and the another additional calibration data point, and
wherein, for the ACK in response to the third received power packet, the wireless power receiver waits for a power level to stabilize and the wireless power receiver receives the ACK in response to the third received power packet when the power level is stabilized based on at least one control error packet.