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:
May. 16, 2017
Filed:
Aug. 22, 2011
Katsumi Taguchi, Yokohama, JP;
Takashi Sato, Tokyo, JP;
Katsumi Taguchi, Yokohama, JP;
Takashi Sato, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A power supply device supplying power to a device via a power line is provided, where the power supply device includes a first voltage generation unit configured to generate and supply a first direct voltage to the power line, a second voltage generation unit configured to generate and supply a second direct voltage lower than the first direct voltage to the power line, a measurement unit configured to measure a voltage of the power line, a control unit configured to control supply of the first direct voltage with the first voltage generation unit after starting supply of the second direct voltage with the second voltage generation unit, and a determination unit configured to determine a state of the power supply device based on the measured voltage and a first threshold value after starting the supply of the second direct voltage.