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. 21, 2017
Filed:
Sep. 29, 2014
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Yohei Hirota, Tokyo, JP;
Hiraku Hirabayashi, Tokyo, JP;
Assignee:
TDK CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B 7/30 (2006.01); G01D 5/16 (2006.01); G01D 5/14 (2006.01); G01R 33/09 (2006.01);
U.S. Cl.
CPC ...
G01D 5/16 (2013.01); G01D 5/145 (2013.01); G01R 33/09 (2013.01);
Abstract
A rotating field sensor includes four detection circuits each of which generates an output signal responsive to the direction of a rotating magnetic field, and an angle calculation unit configured to calculate four angle values in correspondence to four groups each consisting of two detection circuits selected from the four detection circuits. The angle calculation unit calculates each of the four angle values on the basis of two output signals of the two detection circuits constituting a corresponding one of the four groups.