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. 27, 2010
Filed:
Aug. 30, 2006
Fumikazu Takahashi, Hitachi, JP;
Akihiko Kanouda, Hitachinaka, JP;
Kuniyoshi Watanabe, Nakai, JP;
Masahiro Hamaogi, Odawara, JP;
Yoshihide Takahashi, Odawara, JP;
Fumikazu Takahashi, Hitachi, JP;
Akihiko Kanouda, Hitachinaka, JP;
Kuniyoshi Watanabe, Nakai, JP;
Masahiro Hamaogi, Odawara, JP;
Yoshihide Takahashi, Odawara, JP;
Hitachi Computer Peripherals Co., Ltd., Kanagawa-ken, JP;
Abstract
An object of the invention is to provide a small and low-cost switching power supply unit with a backup function in which a proper circuit construction can be selected by simple method when it is necessary to compensate for the instantaneous drop or power failure and a disk array system having the switching power supply unit. To accomplish the object, a backup unit which can insert and pull out its hot line into a switching power supply unit casing and has a secondary battery and its state monitoring/control unit is built in the unit, and proper charge/discharge management of the secondary battery can be made. When the backup unit is unnecessary, a backup unit formed by a plurality of capacitors whose hot lines can be similarly inserted and pulled out can be built in an enclosing space of the backup unit.