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. 06, 2001
Filed:
Aug. 31, 1998
Makoto Ishida, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
There is provided a remaining battery capacity display device for use in a communication device powered by a battery, which is capable of displaying an exact remaining battery capacity even if battery current consumption varies. A voltage detection device detects a value of voltage of the battery to deliver the detected voltage value to a remaining battery capacity calculation device within a controller, while a current consumption calculation device calculates a battery current consumption based on a transmission output level of a transmission/reception block to deliver the calculated battery current consumption to the remaining battery capacity calculation device. The remaining battery capacity calculation device calculates a remaining battery capacity based on the received values of the battery voltage and battery current consumption. Functions employed by the current consumption calculation device and the remaining battery capacity calculation device for respective calculating operations are prepared in advance based on measurement data. A display control device causes a display device to carry out display operation based on the remaining battery capacity calculated by the remaining battery capacity calculation device.