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. 19, 2014
Filed:
Mar. 31, 2009
Georg Sauerlaender, Aachen, DE;
Eberhard Waffenschmidt, Aachen, DE;
Georg Sauerlaender, Aachen, DE;
Eberhard Waffenschmidt, Aachen, DE;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
A Wireless power transmission system comprises a base unit () with multiple magnetic field generator circuits and a device (), separable from said base unit () having a receiving inductor, adapted to receive power inductively when said device () is in proximity to one of said generator circuits, wherein said base unit () comprises a controller (), configured to determine a transmission circuit (') from said generator circuits when said receiving inductor is in proximity to said transmission circuit (′), whereupon said transmission circuit (′) is operated to generate a first magnetic field (), having a first phase, to induce a current in said receiving inductor and at least one of the remaining generator circuits is operated as a compensation circuit () to generate a second magnetic field (), having an opposite phase to said first phase.