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. 28, 2017
Filed:
Nov. 25, 2013
Canon Kabushiki Kaisha, Tokyo, JP;
Katsumi Takahashi, Moriya, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A power supply circuit includes a first power supply for a normal power mode, a second power supply for a power saving mode, which is connected in parallel with the first power supply, a controller to which power from the first power supply and power from the second power supply are supplied via a common connection point, and a switch element which is connected between an output terminal of the first power supply and the connection point and controls power that is supplied to the controller, wherein the switch element includes a diode between a source terminal and a drain terminal of the switch element, the drain terminal of the switch element is connected to the first power supply side to prevent current flowing from the connection point toward the first power supply, and the source terminal of the switch element is connected to the connection point side.