Patent ID: 6297631
Filing Date: 2001-10-02
Classification: G11B,Y10T

Abstract:
A magnetic signal reproducing apparatus, comprising:a magneto-resistive effect type magnetic head having a magneto-resistive effect element that is subject to abrasive wear from an initial state; anda sense current supplying section for supplying a sense current to said magneto-resistive effect element, wherein a value of the sense current supplied to said magneto-resistive effect element from said sense current supplying section is set to be greater than a predetermined value of sense current I0 whereat an asymmetry of said magneto-resistive effect element, caused by a difference between a detected voltage level of the sense current when a magnetic field in a predetermined direction is applied to the magnetic-resistive effect element and a detected voltage level of the sense current when the magnetic field in a direction opposite to said predetermined direction is applied, in the initial state is zeroed.