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. 26, 2019
Filed:
Dec. 06, 2016
Alps Electric Co., Ltd., Ota-ku, Tokyo, JP;
Hiroyuki Hebiguchi, Miyagi-ken, JP;
Alps Alpine Co., Ltd., Tokyo, JP;
Abstract
First and second magnetic detection units are disposed at positions where an S/N ratio, which is a ratio between the strength of a magnetic field generated by a current to be measured flowing through a current path and the strength of an external magnetic field, is the same. A processing unit determines a normal operation state in a case where the detection signal of the first magnetic detection unit and the detection signal of the second magnetic detection unit approximately match each other. The processing unit determines that either one of the first and second magnetic detection units has failed in a case where the detection signals do not match each other.