Patent ID: 11949255
Assignee: KONINKLIJKE PHILIPS N.V.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 20:
21. A method of operation of a power receiver device for wireless power transfer from a power transmitter to a power receiver using an power transfer signal,
wherein the power transfer signal during a power transfer phase uses at least one repeating frame(s),
wherein the at least one repeating time frame(s) comprise at least one power transfer interval(s), at least one object detection interval(s) and at least one communication interval(s),
wherein the power receiver device comprises a communication resonance circuit,
wherein the communication resonance circuit comprises a communication antenna and a power transfer circuit,
wherein the communication antenna is arranged to transmit and receive a communication signal,
wherein the power transfer circuit comprises a power transfer coil, the method comprising:
receiving the power transfer signal during the at least one power transfer interval(s) using the power transfer coil;
communicating with a power receiver via an communication signal;
controlling the communication resonance circuit to provide a resonance at a first resonance frequency to the communicator circuit;
adapting the communication resonance circuit so as to not provide the resonance at the first resonance frequency to the communicator circuit during the at least one object detection interval(s);
adapting the communication resonance circuit so as to provide the resonance at the first resonance frequency to the communicator circuit during the at least one communication interval(s).