Patent ID: 7751143

Claim:
A head position control method comprising: a first step of fixing and rotating a discrete-track magnetic recording medium on which a plurality of tracks are concentrically formed and magnetically separate from each other onto a rotation driving mechanism, positioning a magnetic head on the magnetic recording medium, and detecting a first rotation angle of the rotation driving mechanism at which the relative displacement between the magnetic head and the tracks has a peak, from the read signal of the magnetic head; a second step of calculating first vibration data so that the relative displacement between the magnetic head and the tracks has a peak at a second rotation angle of the rotation driving mechanism, which is displaced from the first rotation angle by a predetermined angle; a third step of adding the first vibration data to vibrate the magnetic head, and detecting a third rotation angle of the rotation driving mechanism at which the relative displacement between the magnetic head and the tracks has a peak, from the read signal of the magnetic head; a step of calculating head position compensation data based on the first rotation angle, the second rotation angle, the third rotation angle, and the vibration amplitude of the magnetic head; and a step of compensating the position of the magnetic head according to the head position compensation data.