Patent ID: 6337780
Filing Date: 2002-01-08
Classification: G11B

Abstract:
A method of enhancing the accuracy of positioning a read head in a center of a track of a disk recording medium, a write head having a width equal to that of the width of the track, comprising the steps of:writing a pair of servo burst signals, one of said servo burst signals being centered on one edge of said track and the other of said servo burst signals being centered on an edge opposite to said one edge of said track, each servo burst signal having a shape of a cross, said servo burst signals having a first section centered on at a border between two adjacent tracks having a width less than a track width, a second section having a width equal to the width of a track and centered at said border between two adjacent tracks, a third section centered at said border between two adjacent tracks having a width less than a track width, said first section being adjacent to a first side of said second section and said third section being adjacent to a second side of said second section, said second side of said second section being opposite to said first side of said second section; reading said pair of servo burst signals using said read head; determining uniquely a position of said read head with respect to a center of said track by examining a magnitude of a first of said pair of servo burst signals and a magnitude of a second of said pair of said servo burst signals; and repositioning said read head based on said position of said read head.