MAGNETIC DISK, EQUIPMENT FOR CONTROLLING MAGNETIC HEAD POSITION, METHOD FOR CONTROLLING MAGNETIC HEAD POSITION, MAGNETIC HEAD POSITION CONTROL PROGRAM, RECORDING MEDIUM WITH THE CONTROL PROGRAM RECORDED, AND MAGNETIC DISK RECORDING AND REPRODUCING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a magnetic disk containing servo patterns for measuring a magnetic head position independent of the amplitude of a burst signal, and equipment used for controlling a magnetic head position, for realizing highly accurate servo control with respect to the magnetic head position by using the magnetic head and a control method therefor.;SOLUTION: A servo sector 1 contains first to fourth servo patterns, 21 to 24. The tip portion 2a of the first servo pattern 21, the terminal portion 2c of the second servo pattern 22, and the terminal portion 2e of the fourth servo pattern 24 are in parallel to a radius direction. A boundary 2b between the first and the second servo pattern and a boundary 2d between the third and the fourth servo pattern decline to the radius direction. From a difference C-D between the length of the third servo pattern and that of the fourth servo pattern, whether or not the magnetic head position is on an odd-number track To or on an even-number track Te is judged. The magnetic head position is specified from a length ratio, A:B of he first servo pattern to the second servo pattern.;COPYRIGHT: (C)2003,JPO