Patent ID: 6038096
Filing Date: 2000-03-14
Classification: G11B

Abstract:
An adaptative sector seeking method for reducing disk drive power consumption while moving an actuator head during a movement time from a present track and present sector to a target track and target sector, comprising the steps of:(A) determining a first variable indicative of a first time period in which to move the actuator head from the present track to the target track along a radial arc traced by the movement of the actuator head at a default actuator speed;(B) determining a second variable indicative of a second time period measured from the present servo sector to when the target servo sector advances to the radial arc;(C) moving the actuator head at a first rate if the first variable and the second variable are equal, the first rate being chosen such that a third time period for the actuator head to reach the target track is substantially equal to the first time period;(D) moving the actuator head at a second rate, slower than the first rate, if the first variable is less than the second variable, the second rate being chosen such that a fourth time period for the actuator head to reach the target track is substantially equal to the second time period; and(E) moving the actuator head at a third rate, slower than the first rate, if the first variable is greater than the second variable, the third rate being chosen such that a fifth time period for the actuator head to reach the target track is substantially equal to the second time period plus a sixth time period required for one revolution of a disk drive platter of the disk drive.