Tilt Compensation on Hard Disk Drive
Original Publication Date: 1988-Nov-01
Included in the Prior Art Database: 2005-Feb-15
This article describes a way to compensate for a head-positioning error called tilt which is caused by the change of relative position between heads due to the change of environmental temperature or some other factor. One magnetic head is selected from a plurality of magnetic heads and is used as a reference magnetic head. The relative position error between the reference magnetic head and the other magnetic heads is obtained beforehand. Before reading or writing data at a target track with a desired magnetic head, positioning information at a track corresponding to the target track is read with the reference magnetic head and the position error of the reference magnetic head from the track center is obtained.