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:
Oct. 18, 2022
Filed:
Jan. 06, 2021
Applicant:
Mediatek Inc., Hsin-Chu, TW;
Inventors:
Vladimir Alexander Muratov, San Jose, CA (US);
Patrick Stanley Riehl, Lynnfield, MA (US);
William Plumb, Charlestown, MA (US);
Assignee:
MediaTek Inc., Hsin-Chu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02J 50/60 (2016.01); H02J 50/12 (2016.01); H02J 50/10 (2016.01); H02J 7/02 (2016.01);
U.S. Cl.
CPC ...
H02J 50/60 (2016.02); H02J 7/025 (2013.01); H02J 50/10 (2016.02); H02J 50/12 (2016.02);
Abstract
An apparatus and method for performing foreign object detection for a wireless power transmitter. A matching network and transmit coil are energized, and a resonance is excited. The resonance is allowed to decay. A temporal characteristic of the decay is measured. The temporal characteristic is analyzed to determine whether a foreign object is coupled to an electromagnetic field generated by the transmit coil.