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:
Jul. 21, 1981
Filed:
Jun. 06, 1979
Applicant:
Inventor:
Edmond de Niet, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ; G11B / ;
U.S. Cl.
CPC ...
360113 ; 360 66 ; 360123 ;
Abstract
A magnetic reading head having a magnetoresistive element which is connected to a reading amplifier. In order to reduce the modulation noise (Barkhausen effect) when making the relationship between the resistance variation and the strength of the signal field linear in a negative feedback loop of the reading amplifier an electric turn is present which turn is positioned relative to the magnetoresistive element in such manner that a negative feedback field (Ht) can be generated with it which causes a magnetic flux in the element which is directed oppositely to the magnetic flux caused in the element by a magnetic field (H.sub.y) to be detected.