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:
Jun. 02, 2015
Filed:
Oct. 13, 2010
Takahiro Tsuji, Osaka, JP;
Keiichi Ashida, Amagasaki, JP;
Takahiro Tsuji, Osaka, JP;
Keiichi Ashida, Amagasaki, JP;
RICOH ELECTRONIC DEVICES CO., LTD., Osaka, JP;
Abstract
A charging circuit that simultaneously charges a battery with an electrical current supplied from an external power source and supplies the electrical current supplied from the external power source to a load includes a power supply circuit to supply an electrical current from the battery to the load when a load current required by the load is greater than a maximum supply current of the external power source, a detector to detect a voltage of the battery, and a controller to control power supply to the load as well as charging the battery. When the detected voltage of the battery is lower than the predetermined threshold, the controller stops supplying the electrical current from the battery to the load and charges the battery with the electrical current supplied from the external power source.