Patent ID: 6404576
Filing Date: 2002-06-11
Classification: B82Y,G11B

Abstract:
A magnetic recording disk apparatus, comprising:a magnetic recording disk medium having a plurality of tracks formed thereon in a concentric circle pattern; a plurality of servo areas, in each of which a servo pattern is recorded, formed in said tracks; a data area formed between the servo areas; a plurality of micro-servo areas disposed in said data area, each of which divides said data area into several different areas; and a plurality of patterns disposed between each of said micro-servo areas; a magnetic head including a read element and a write element; a servo decoder for generating a head position signal from said servo pattern; and means for correcting a deviation of the head position by detecting a signal from said plurality of patterns; wherein a length of each of said plurality of patterns in the track length direction is less than a length between said micro-servo areas, a width of said plurality of patterns in the track width direction is less than a track width of said data area, and an area of each said micro-servo area is smaller than that of each said servo area.