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. 11, 1977
Filed:
Jul. 21, 1975
Tsunehiro Maruo, Yokohama, JA;
Sony Corporation, Tokyo, JA;
Abstract
Apparatus for detecting the direction of a magnetic field includes a magnetoresistive device comprising an insulating substrate, first and second ferromagnetic metal film strips on the substrate for providing first and second main current conducting paths respectively perpendicular to each other, the ends of the strips being connected together to form an output terminal and having current input terminals connected to the opposed ends of the strips. A stationary bias magnet is disposed adjacent the magnetoresistive device for supplying a bias flux at a predetermined angle relative to a main current conducting path. In one application of this apparatus, the magnetic field is supplied from, for example, a magnet, such as a rotary magnet, thereby to apply, with the bias flux, a composite flux to the magnetoresistive device. An output signal is derived from the output terminal that is a function of the direction in which the magnetic field is supplied.