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:
May. 26, 1992
Filed:
Oct. 12, 1989
Applicant:
Inventor:
Ichiro Tokunaga, Miyagi, JP;
Assignee:
Alps Electric Co., Ltd., Tokyo, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360113 ;
Abstract
A magnetic sensor for an encoder having tracks arranged alternately with N- and S-poles, comprising two MR thin films arranged at a near interval in the track direction with a direction perpendicular to the tracks as a longitudinal direction, oblique electrode formed obliquely to the longitudinal direction on the magnetoresistance effect detecting magnetic thin films to generate a bias magnetic field of opposite directions parallel to the tracks by a current flowing to the oblique electrodes in the MR thin films, thereby detecting poles arranged at random intervals.