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:
Oct. 22, 2013
Filed:
Feb. 03, 2009
Masahiro Mita, Kumagaya, JP;
Kyohei Aimuta, Kumagaya, JP;
Osamu Shimoe, Kumagaya, JP;
Rihito Kagawa, Kumagaya, JP;
Masahiro Mita, Kumagaya, JP;
Kyohei Aimuta, Kumagaya, JP;
Osamu Shimoe, Kumagaya, JP;
Rihito Kagawa, Kumagaya, JP;
Hitachi Metals, Ltd., Tokyo, JP;
Abstract
An apparatus for detecting a rotation angle using a magnet rotor comprising a magnet having 2N poles, wherein N is a natural number, and a sensor device for detecting the direction of a magnetic flux from the magnet rotor, at least one of two output voltages obtained in radial and rotational directions by the sensor device being multiplied by a correction coefficient, and the rotation angle being calculated from the two corrected output voltages to increase the detection accuracy of the rotation angle.