Patent ID: 6876506

Claim:
An information recording medium having a servo burst pattern pre-recorded at a predetermined position so as to allow a recording head or a reproduction head to follow a predetermined information track, for recording information on said information track by scanning the predetermined information track with said recording head when recording the information or reproducing information on said information track by scanning said track with said reproduction head when reproducing the information, comprising: a group of servo burst patterns, each of said servo burst patterns having the same width in the orthogonal direction to said information track and two integer times or more integer times as long a width as said information track, each of said servo burst patterns being located to have respective ends thereof not coinciding with a center line of said information track, each of said servo burst patterns being located so as to repetitively alternate a recording portion with a non-recording portion in the orthogonal direction to said information track, and each of said servo burst patterns is shifted in the orthogonal direction to said information track with respect to an adjacent of said servo burst patterns by a predetermined value.