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. 23, 2022
Filed:
May. 13, 2021
Koninklijke Philips N.v., Eindhoven, NL;
Andries Van Wageningen, Wijlre, NL;
Wilhelmus Gerardus Maria Ettes, Leeuwarden, NL;
Eddy Gerrit Veltman, Steenbergen, NL;
Antonius Adriaan Maria Staring, Eindhoven, NL;
Richard Henricus Maria Theelen, Susteren, NL;
Johannes Gerardus Fredericus Kablau, Eindhoven, NL;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
A power transmitter () for a wireless power transfer system comprises a transmitter coil () and a driver () generates a drive signal for the transmitter coil () employing a repeating time frame with a power transfer time interval and a foreign object detection time interval. A test generator () generates a test drive signal for a test coil () during the foreign object detection time interval. A foreign object detector () performs a foreign object detection test based on a measured parameter for the test drive signal. Prior to entering a power transfer phase, an adapter () controls the power transmitter () to operate in a foreign object detection initialization mode in which a preferred value of a signal parameter for the test drive signal is determined in response to at least a first message received from the power receiver (). During the foreign object detection time interval the signal parameter of is set to the preferred value.