Patent ID: 6762902
Filing Date: 2004-07-13
Classification: G11B

Abstract:
A rotating disk storage device, comprising:a disk which has a surface; a spindle motor that rotates said disk; a transducer which can write information onto said disk and read information from said disk; an actuator arm that can move said transducer across said surface of said disk; and a controller to (i) control the movement of the actuator arm to move said transducer across said disk surface from a first track to a second track, (ii) determine a position error signal at one or more positions between the first and second tracks, said position error signal including a non-repeatable disturbance signal, (iii) iteratively generate a disturbance correction signal at the one or more positions based on the position error signal, (iv) combine the disturbance correction signal with the position error signal to minimize the non-repeatable disturbance signal to provide a corrected position error signal, and (v) vary, at the one or more positions, the movement of the transducer as a function of the corrected position error signal.