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:
Feb. 11, 2020
Filed:
May. 16, 2016
Applicant:
Sony Corporation, Tokyo, JP;
Inventor:
Hiroyuki Watanabe, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M 7/12 (2006.01); H02J 9/06 (2006.01); H02M 1/32 (2007.01);
U.S. Cl.
CPC ...
H02M 7/125 (2013.01); H02J 9/062 (2013.01); H02M 2001/322 (2013.01);
Abstract
[Object] [Solving Means] A discharge device includes a discharge unit and a cut-off detection unit. The discharge unit is configured to discharge a capacitor at a variable discharge current value on the basis of a voltage of a rectified signal obtained by full-wave rectifying an AC voltage input via an input filter including the capacitor. The cut-off detection unit is configured to monitor the voltage of the rectified signal and to detect whether or not a power supply is cut off on the basis of a change of the voltage when the capacitor is discharged by the discharge unit at a specific discharge current value.