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. 08, 2013
Filed:
Aug. 19, 2011
Keiichi Ichikawa, Nagaokakyo, JP;
Hironori Sakai, Nagaokakyo, JP;
Keiichi Ichikawa, Nagaokakyo, JP;
Hironori Sakai, Nagaokakyo, JP;
Abstract
This disclosure provides a power transmitting apparatus including coupling electrodes couplable to a power receiving apparatus to transmit power to the receiving apparatus. A high-frequency voltage generator circuit is adapted to supply a high-frequency voltage across the coupling electrodes in accordance with a signal output from a control circuit. A driving power supply switching circuit switches between applying a constant voltage and supplying a constant current to the high-frequency voltage generator circuit. First, by sweeping the driving frequency of the high-frequency voltage generator circuit in a state in which a constant current is supplied, it is determined whether there is a maximal value in the frequency characteristics of a voltage applied to the high-frequency voltage generator circuit. When there is a maximal value, the corresponding frequency is set as the driving frequency, and power transmission is started after the driving power supply switching circuit is switched to a constant voltage.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile