Patent ID: 7894152

Claim:
A perpendicular recording discrete track medium, comprising: a recording area having a plurality of recording tracks; and a servo area having servo patterns for detecting width-direction positions of each of the tracks, wherein each of the plurality of tracks comprises a soft magnetic layer formed on a substrate, wherein each of the plurality of tracks is separated from each adjacent track, and a magnetic recording layer formed on the soft magnetic layer separated from other tracks and having an easy axis of magnetization in a direction perpendicular to the substrate surface; the servo area has a plurality of servo blocks patterned into a servo pattern for detection of the width-direction position of each track, and the plurality of servo blocks have a soft magnetic layer, formed on the substrate, wherein each of the plurality of servo blocks is separated from each adjacent servo block, and a magnetic recording layer, formed on the soft magnetic layer, separated from other servo blocks and having an easy axis of magnetization in a direction perpendicular to the substrate surface; and each of the plurality of servo blocks has magnetization in the direction perpendicular to the substrate and in opposite directions, wherein each of the plurality of servo blocks has downward magnetization recorded near one of its edges and upward magnetization recorded near its other edge.