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:
Mar. 27, 2001
Filed:
Mar. 29, 2000
Michio Hibi, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
When a power supply activating signal is inputted from an input terminal by depressing a main power supply switch of an electronic apparatus, electric power is supplied from a battery to a protection circuit portion and a management circuit portion through a pack power supply control circuit. Thus, the self discharge of the battery is reduced when a battery pack is not used. The protection circuit portion is operative to output a detection signal to the management circuit portion. Further, the management circuit portion posts a state of the battery to the electronic apparatus. The protection circuit portion is not controlled by the management circuit portion. Thus, even when a bug or a runaway occurs in MCU circuit of the management circuit portion, the battery can be safely protected.