Patent ID: 7403353

Claim:
A magnetic recording/reproducing system, comprising a magnetic recording medium having a data information recording portion and a servo information portion for tracking, and a magnetic head operable to detect servo information at said servo information portion and record and reproduce data information on and from said data information recording portion, wherein: said data information recording portion comprises a data track having a data track pitch Tp, said servo information portion comprises a magnetic recording layer formed in a given concave-convex pattern, said servo information portion comprises a burst division on which tracking burst signals are recorded, said burst division comprises a first burst, a second burst, a third burst and a fourth burst, each comprising a plurality of convex-form magnetic recording layers with the burst signals recorded thereon, said first burst and said second burst in pair form are located such that the convex-form magnetic recording layers are formed with centerlines defined at positions mutually offset by two track pitches of distance (2Tp) in a track width direction, said third burst and said fourth burst in pair form are located such that the convex-form magnetic recording layers are formed with centerlines defined at positions mutually offset by two track pitches of distance (2Tp) in the track width direction, and said third burst and said fourth burst are located such that the convex-form magnetic recording layers are formed with centerlines defined at positions offset from centerlines of said first burst and said second burst by one track pitch of distance (1Tp), said convex-form magnetic layers are each configured in a substantially trapezoidal shape (truncated quadrangular pyramid shape) in the track width direction and in a track circumference direction, respectively, and said magnetic recording/reproducing system satisfies the following condition provided that W 1 >Tp: 1.25W2>Wr≧0.5W2 where W 1 is an upper side of said trapezoidal shape in the track width direction, which corresponds to a surface of said convex-form magnetic recoding layer, W 2 is a lower side of said trapezoidal shape in the track width direction, which corresponds to a bottom surface of said convex-form magnetic layer, Tp is a data track pitch at said data information recording portion, and Wr is a read width of said magnetic head.