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:
Jun. 30, 2015
Filed:
Sep. 10, 2012
Hiroshi Nakao, Yamato, JP;
Hiroshi Nakao, Yamato, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
A power supply switching apparatus includes a controller and a switch. The controller includes a first comparator, an integrator circuit and a second comparator. The first comparator is configured to output a binary signal having a level corresponding to a magnitude of a signal input from the power supply being connected thereto. The integrator circuit is configured to integrate an output from the first comparator. The second comparator is configured to output a binary signal having a level corresponding to a magnitude of a single input from the integrator circuit. The switch has an input side connected to the first and the second power supply and is configured to switch an outputting current between a current supplied from the first power supply and a current supplied from the second power supply in accordance with a value of the signal output from the second comparator.