US 12,438,403 B2
Method and apparatus for NFC communication and detection during charging in wireless power transmission system
Jinho Youn, Seoul (KR); and Jonggu Kim, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 18/687,171
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Aug. 31, 2022, PCT No. PCT/KR2022/013036
§ 371(c)(1), (2) Date Feb. 27, 2024,
PCT Pub. No. WO2023/033540, PCT Pub. Date Mar. 9, 2023.
Claims priority of application No. 10-2021-0115762 (KR), filed on Aug. 31, 2021.
Prior Publication US 2024/0372415 A1, Nov. 7, 2024
Int. Cl. H02J 50/80 (2016.01); H04B 5/79 (2024.01); H02J 50/12 (2016.01)
CPC H02J 50/80 (2016.02) [H04B 5/79 (2024.01); H02J 50/12 (2016.02)] 19 Claims
OG exemplary drawing
 
1. A method for transferring a wireless power in a wireless power transfer system, the method performed by a wireless power transmitter and comprising:
entering a power transfer phase related to transferring the wireless power; and
receiving, from a wireless power receiver, a first near field communication (NFC) signal on a slot during the power transfer phase,
wherein the slot is a period where a power signal is reduced or operating frequency is increased.