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. 23, 1999
Filed:
Mar. 25, 1998
Applicant:
Inventors:
Kaoru Kawata, Tokyo, JP;
Minoru Nakamura, Tokyo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J / ;
U.S. Cl.
CPC ...
320162 ; 320164 ;
Abstract
A power circuit for a device having a secondary battery receives commercial electric power supplied externally and supplies electric power to a target in the device and to the secondary battery. The power circuit includes a measuring circuit and a current control circuit. The measuring circuit measures power consumption of the target circuit in the device. The current control circuit controls a charging current to the secondary battery so that the power consumption and the charging current have a negative correlation based on a measurement result of the measuring circuit.