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. 10, 2015
Filed:
May. 17, 2012
Applicants:
Takashi Odate, Tokyo, JP;
Keisuke Samejima, Suntou-gun, JP;
Inventors:
Takashi Odate, Tokyo, JP;
Keisuke Samejima, Suntou-gun, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 15/00 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
G03G 15/80 (2013.01); H02M 2001/0006 (2013.01);
Abstract
A switching power supply includes a transformer, a switching unit configured to switch a voltage input to the primary side of the transformer, a control unit configured to control the operation of the switching unit, and a detection unit configured to detect as a voltage a current flowing through the primary side of the transformer and supply the voltage to the control unit, wherein the detection unit controls the voltage to be supplied to the control unit based on the operating state of the switching unit.