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. 17, 2025
Filed:
Feb. 07, 2023
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventors:
Assignee:
Panasonic Automotive Systems Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M 1/44 (2007.01); B60R 16/02 (2006.01); G01R 31/28 (2006.01); H02M 3/155 (2006.01);
U.S. Cl.
CPC ...
H02M 1/44 (2013.01); B60R 16/02 (2013.01); G01R 31/282 (2013.01); H02M 3/155 (2013.01);
Abstract
A noise reduction device according to one embodiment includes a noise reduction circuit and a failure diagnosis circuit. The noise reduction circuit generates an offset signal with reverse polarity of a noise component generated in a load. The failure diagnosis circuit detects a level of the offset signal. The failure diagnosis circuit determines whether or not a detected level of the offset signal deviates from an appropriate range. The failure diagnosis circuit diagnoses, on the basis of a determination result, whether or not a failure has occurred in the noise reduction circuit.