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. 01, 2011
Filed:
Oct. 14, 2009
Hiroshi Suzuki, Sagamihara, JP;
Hiromi Matsushige, Hiratsuka, JP;
Tetsuya Inoue, Odawara, JP;
Masato Ogawa, Chigasaki, JP;
Tomokazu Yokoyama, Fujisawa, JP;
Hiroshi Suzuki, Sagamihara, JP;
Hiromi Matsushige, Hiratsuka, JP;
Tetsuya Inoue, Odawara, JP;
Masato Ogawa, Chigasaki, JP;
Tomokazu Yokoyama, Fujisawa, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A power device of the present invention makes a plurality of DC/DC converters redundant, and supplies power individually to a plurality of disk drives. Each first DC/DC converter is respectively made correspondent to a subgroup. One first DC/DC converter is connected to the disk drives respectively inside one subgroup, and the other first DC/DC converter is connected to the disk drives inside the other subgroup. A second DC/DC converter is made correspondent to all of the subgroups. Second DC/DC converters respectively supply direct-current power to any one disk drive of the disk drives in the subgroups.