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:
Feb. 12, 2019
Koninklijke Philips N.v., Eindhoven, NL;
Wilhelmus Gerardus Maria Ettes, Leeuwarden, NL;
Andries Van Wageningen, Wijlre, 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 reduced power time interval during which a power level of the power transfer signal is reduced. A driver () generates a drive signal for the transmitter coil () to generate the power transfer signal. A communicator () receives messages from the power receiver () and an adapter () adapts a timing property of the reduced power time interval in response to at least a first message received from the power receiver (). A synchronizer () for synchronizing a foreign object detection and the generation of a test signal to occur during the reduced power time interval. The operation may typically be a foreign object detection or communication, and the timing property may e.g. be a duration of the reduced power time interval.