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. 08, 2011
Filed:
Feb. 15, 2008
Kota Onishi, Nagoya, JP;
Kentaro Yoda, Chino, JP;
Takahiro Kamijo, Fujimi-cho, JP;
Haruhiko Sogabe, Chino, JP;
Kuniharu Suzuki, Tokyo, JP;
Hiroshi Kato, Yokohama, JP;
Katsuya Suzuki, Takasaki, JP;
Manabu Yamazaki, Hiratsuka, JP;
Kota Onishi, Nagoya, JP;
Kentaro Yoda, Chino, JP;
Takahiro Kamijo, Fujimi-cho, JP;
Haruhiko Sogabe, Chino, JP;
Kuniharu Suzuki, Tokyo, JP;
Hiroshi Kato, Yokohama, JP;
Katsuya Suzuki, Takasaki, JP;
Manabu Yamazaki, Hiratsuka, JP;
Seiko Epson Corporation, Tokyo, JP;
Sony Ericsson Mobile Communications Japan, Inc., Tokyo, JP;
Abstract
A power transmission device performs power-saving power transmission that transmits a small amount of power as compared with normal power transmission when the power transmission device has detected that a battery of a load has been fully charged so that the operation of a charge control device (charge control IC) of the load is maintained, thereby enabling recharging due to a charge management function of the charge control device. Since the load state of a power reception device increases when recharging has started, the power transmission device detects an increase in the load state and changes power transmission from power-saving power transmission to normal power transmission. When the power reception device has been removed during power-saving power transmission, the power transmission device detects that the power reception device has been removed, and stops continuous power transmission so that unnecessary power consumption does not occur.