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:
Aug. 07, 2018
Filed:
Jun. 15, 2016
Power feeding device, wireless power feeding system using the same and wireless power feeding method
Applicant:
Semiconductor Energy Laboratory Co., Ltd., Atsugi-shi, Kanagawa-ken, JP;
Inventors:
Assignee:
Semiconductor Energy Laboratory Co., Ltd., Kanagawa-ken, JP;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F 27/42 (2006.01); H01F 37/00 (2006.01); H01F 38/00 (2006.01); H02J 50/10 (2016.01); H04B 1/44 (2006.01); H02J 50/90 (2016.01); H02J 50/40 (2016.01); H02J 5/00 (2016.01); H02J 17/00 (2006.01); H02J 50/12 (2016.01); H02J 50/80 (2016.01); H02J 50/20 (2016.01); H02J 7/02 (2016.01); H02J 50/05 (2016.01);
U.S. Cl.
CPC ...
H02J 50/10 (2016.02); H02J 5/005 (2013.01); H02J 7/025 (2013.01); H02J 17/00 (2013.01); H02J 50/12 (2016.02); H02J 50/20 (2016.02); H02J 50/40 (2016.02); H02J 50/80 (2016.02); H02J 50/90 (2016.02); H04B 1/44 (2013.01); H02J 50/05 (2016.02);
Abstract
An object is to provide a power feeding device, a power feeding system, and a power feeding method which are more convenient for a power feeding user at the power receiving end. The power feeding device includes a means of controlling a frequency of a power signal transmitted to a power receiver, based on a proportion of signals, among power signals output to an antenna circuit, that return from the power receiver to the antenna circuit without feeding power to the power receiver.