Patent ID: 11916615
Assignee: LG ELECTRONICS INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A wireless power receiver for receiving wireless power based on an out-band communication, comprising:
a power pickup circuit configured to receive wireless power from a wireless power transmitter based on magnetic coupling with the wireless power transmitter in an operation frequency and transform an alternate current (AC) signal generated by the wireless power to a direct current (DC) signal;
a communication/control circuit configured to be provided with the DC signal from the power pickup circuit, perform a handover to the out-band communication using a frequency except the operating frequency in an in-band communication using the operation frequency, transmit power characteristic information to the wireless power transmitter or receive the power characteristic information from the wireless power receiver based on the out-band communication before entering a power transfer phase, and perform a process of saving power state information determined during the power transfer phase; and
a load configured to receive the direct current from the power pickup circuit.