The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 11, 2025
Filed:
Aug. 12, 2022
Power transmission apparatus, power receiving apparatus, control methods thereof, and storage medium
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Takahiro Shichino, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J 50/60 (2016.01); G01V 3/10 (2006.01); H02J 50/12 (2016.01); H02J 50/80 (2016.01);
U.S. Cl.
CPC ...
H02J 50/60 (2016.02); G01V 3/101 (2013.01); H02J 50/12 (2016.02); H02J 50/80 (2016.02);
Abstract
A power transmission apparatuswirelessly transmits power to a power receiving devicevia a power transmission coil, measures a Q factor of the power transmission coilin the time domain, and determines presence or absence of an object (foreign object) different from the power receiving apparatusbased on the Q factor measured in the time domain and a reference value of the Q factor which is based on information obtained from the power receiving apparatus