Patent ID: 6608460
Filing Date: 2003-08-19
Classification: G11B

Abstract:
A method for driving a head, said method comprising:(a) a step for determining a minimum integer N holding a relation of: (a target-sector-accessible-time)&gE;(a shortest time within which the head moves to a track including a target sector), when a sector-arrival-time is defined as a necessary time from an instance the head starts moving to the track including the target sector to another instance a disc rotates thereby the target sector arrives at a position accessible by the head for a first time, and the target-sector-accessible-time is a sum of the sector-arrival-time and a latency which is obtained by multiplying a disc-rotation-period by an integer N (zero or greater than zero); (b) a step for moving the head by determining a moving-speed and an acceleration/deceleration pattern so that the head finishes a head-moving and a head-positioning to the track including the target sector within the target-sector-accessible-time determined by substituting the integer N.