Apparatus and method for providing servo gain linearization for a magneto-resistive head

摘要

A method and apparatus for generating a position information signal for the head of a hard disk drive. The disk has a track which contains a plurality of servo bursts that allow the head to be centered with the centerline of the track. The servo bursts are first sensed and an upper and a lower threshold values, based on the values of servo bursts, are generated. A position error signal based on the upper and lower threshold and the values of the servo bursts are generated and stored in a memory device.