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:
Apr. 02, 2013
Filed:
Jun. 14, 2010
Kyozo Terao, Sumoto, JP;
Shoichi Toya, Minamiawaji, JP;
Kyozo Terao, Sumoto, JP;
Shoichi Toya, Minamiawaji, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
A device housing a battery () includes a receiving coil (), and a charging pad () includes a transmitting coil () that magnetically couples with, and supplies charging power to the receiving coil. The device further includes a modulator circuit () that changes the impedance of the receiving coil according to internal battery data. The charging pad further includes a detection circuit () that detects receiving coil impedance changes to detect the battery data. The modulator circuit has a load circuit () connected in parallel with the receiving coil and has a series-connected switching device () and impedance modulating capacitor (), and a control circuit () that switches the load circuit switching device ON and OFF according to the battery data. The modulator circuit switches the switching deviceON and OFF to transmit battery data to the charging pad.