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. 27, 1979
Filed:
Apr. 14, 1976
Frederik W Gorter, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
A magnetic reading device having two electrically series-arranged magnetoresistive elements, in particular for interference compensation and positioning control. A pattern of equipotential strips is provided on each element to adjust the quiescent angle .alpha. between the direction of magnetisation and the direction of current passage of one element between 30.degree. and 60.degree. and between 210.degree. and 240.degree., respectively, and that of the other element at 360.degree. - .alpha. and 180.degree. - .alpha., respectively, the device has for various applications an automatic compensation of the signals across the elements so that the use of difference amplifiers is superfluous. In addition, due to this adjustment, the reproduction characteristics has a linear variation.