US 12,230,979 B2
Method and apparatus for controlling wireless power transmission
Yu Ri Park, Seoul (KR); and Yong Il Kwon, Seoul (KR)
Assigned to LG INNOTEK CO., LTD., Seoul (KR)
Filed by LG INNOTEK CO., LTD., Seoul (KR)
Filed on Mar. 6, 2023, as Appl. No. 18/117,631.
Application 18/117,631 is a continuation of application No. 17/830,993, filed on Jun. 2, 2022, granted, now 11,626,762.
Application 17/830,993 is a continuation of application No. 17/055,404, granted, now 11,381,119, issued on Jul. 5, 2022, previously published as PCT/KR2019/005881, filed on May 16, 2019.
Claims priority of application No. 10-2018-0056166 (KR), filed on May 16, 2018; and application No. 10-2018-0068751 (KR), filed on Jun. 15, 2018.
Prior Publication US 2023/0208203 A1, Jun. 29, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H02J 50/60 (2016.01); H02J 7/02 (2016.01); H02J 50/12 (2016.01); H02J 50/20 (2016.01); H02J 50/80 (2016.01); H02J 50/90 (2016.01); H04L 5/00 (2006.01); H02J 50/40 (2016.01)
CPC H02J 50/60 (2016.02) [H02J 7/02 (2013.01); H02J 50/12 (2016.02); H02J 50/20 (2016.02); H02J 50/80 (2016.02); H02J 50/90 (2016.02); H04L 5/0055 (2013.01); H02J 50/402 (2020.01)] 10 Claims
OG exemplary drawing
 
1. A method of controlling a power transmitter, the method comprising:
entering a negotiation phase with a power receiver including receiving a foreign object detection status packet including at least one of a reference quality factor and a reference quality factor peak frequency from the power receiver, detecting whether a foreign object is present based on the foreign object detection status packet, and transmitting a NACK response to the power receiver indicating the power transmitter has detected the foreign object is present or transmitting an ACK response to the power receiver indicating the power transmitter has detected the foreign object is not present; and
entering a power transfer phase including transmitting a first power to the power receiver in response to the transmitted NACK response or transmitting a second power greater than the first power in response to the transmitted ACK response.