Magnetic transducer head

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United States of America Patent

PATENT NO 4277808
SERIAL NO

06041439

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A magnetic transducer head having first and second magneto-resistance effect elements, each of which is made of a thin film having the magneto-resistance effect and which are arranged on approximately one line, a current source for flowing currents through the first and second magneto-resistance effect elements, and a bias source for applying bias magnetic fields to the first and second magneto-resistance effect elements. In this case, the bias magnetic field is selected from bias magnetic fields which have the direction of about .+-.(.pi./4).+-.(n/2).pi., where n is an integer, with respect to the currents flowing through the first and second magneto-resistance effect elements, and the current source and the bias source are so connected that when a uniform signal magnetic field is applied to the first and second magneto-resistance effect elements, the resistances thereof are varied in the opposite directions with respect to each other and the outputs from the first and second magneto-resistance effect elements are derived differentially.

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Patent Owner(s)

  • SONY CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nagaki, Takehiro Komae, JP 6 50

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