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:
Nov. 14, 2017
Filed:
Mar. 24, 2014
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Masayoshi Koizumi, Kanagawa, JP;
Osamu Ohashi, Kanagawa, JP;
Tsuyoshi Nishio, Chiba, JP;
Noriaki Asaoka, Kanagawa, JP;
Abstract
Power supply device is provided with the following: a power supply unit () that includes a spiral coil or a solenoid coil; a frequency characteristic acquisition unit () that acquires the frequency characteristics of the efficiency of the supply of power from the power supply unit to the power receiving device; a peak determining unit () that determines peaks in the frequency characteristics of the efficiency of power supply; and a drive frequency determination unit () that, if two peaks have been found, determines as the drive frequency used for supplying power a frequency near the frequency that is the lower of the frequencies of the two peaks, with the lower frequency being given priority over a frequency near the higher frequency.