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. 15, 2023
Filed:
Jun. 29, 2020
Applicant:
Renesas Electronics America Inc., Milpitas, CA (US);
Inventors:
Nicholaus Smith, La Mesa, CA (US);
Gustavo Mehas, Mercer Island, WA (US);
Tao Qi, San Diego, CA (US);
Assignee:
Renesas Electronics America Inc., Milpitas, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J 50/60 (2016.01); H02J 50/12 (2016.01); H02J 50/90 (2016.01); H02J 50/80 (2016.01);
U.S. Cl.
CPC ...
H02J 50/60 (2016.02); H02J 50/12 (2016.02); H02J 50/80 (2016.02); H02J 50/90 (2016.02);
Abstract
A wireless power transmitter pulses the transmit power level unresponsively to the wireless power receiver's power requests in order to perform foreign object detection (FOD). The FOD is performed by the transmitter analyzing the receiver's responses to the pulsed power. Some embodiments avoid mistaking FOD for coil misalignment. Other features are also provided.