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:
Apr. 15, 2008
Filed:
Apr. 29, 2005
Kentarou Yuasa, Kawasaki, JP;
Kentarou Yuasa, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A power supply unit generates a predetermined voltage from power supplied from an external power supply and outputs the voltage to a power supply line. A battery charge/discharge circuit charges a battery with the voltage supplied and determines whether to supply an output voltage of the battery to the power supply line to activate a backup power supply based on an output control signal. A monitoring unit judges whether a disk array apparatus is operable in accordance with an instruction from a host computer, and outputs, when the disk array apparatus is operable, an output signal for activating the backup power supply, and when the disk array apparatus is not in the operation mode, outputs an output control signal for inactivating the backup power supply to the battery charge/discharge circuit.