METHOD FOR CONTROLLING MOVEMENT OF HEAD IN DATA STORAGE DEVICE, DISK DRIVE EMPLOYING IT AND METHOD FOR DESIGNING THE DISK DRIVE

摘要

PROBLEM TO BE SOLVED: To provide a method to control movement of a head in a data storage device in which the head is moved to a safe region when an external impact is applied to a disk drive and to provide the disk drive using the method. SOLUTION: The method for controlling the disk drive includes: detecting an amount of an impact applied to the disk drive, and determining whether the detected amount exceeds a critical value or not; reading position information of a cylinder, over which a head is positioned, when the detected amount exceeds the critical value, and suspending a command being implemented; determining whether the read cylinder number exceeds a reference cylinder number or not, and moving the head in an innermost peripheral direction of the disk when the read cylinder number exceeds the reference cylinder number, and moving the head in an outermost peripheral direction of the disk when the read cylinder number does not exceed the reference cylinder number. COPYRIGHT: (C)2005,JPO&NCIPI