Patent ID: 6700731
Filing Date: 2004-03-02
Classification: G11B

Abstract:
A method in a hard disk drive for linearizing a position error signal of a transducer having a read element and a write element that is offset from the read element by a predetermined offset, comprising:providing a disk including a first plurality of tracks each having first and second servo bursts defining a track reference line of the respective tracks, a second plurality of the first plurality of tracks each including third and fourth servo bursts defining a second plurality of different position offsets from the respective track reference lines, the second plurality being no greater than the first plurality; reading a second plurality of position error signals at the respective second plurality of different position offsets; positioning the read element of the transducer at the track reference line of a track; obtaining a position error signal based on the predetermined offset, at least one of said second plurality of different position offsets, and at least one of said second plurality of position error signals; and using the position error signal to move the read element of the transducer to an off-reference line position for reading information.