Patent ID: 8149682

Claim:
A method for producing a track structure of an information recording medium of a disk shape, which comprises a land track and a groove track that is closer to an incident laser beam than the land track, wherein information is to be recorded on only one of the land track and the groove track, and the one of the land track and the groove track to which the information is to be recorded has a wobble to which address information is added by Minimum Shift Keying modulation and Harmonic Modulated Wave modulation to a reference frequency signal of the wobble, the method for producing the track structure comprising: selecting, as a recording system, one of a land recording system, which allows information to be recorded only on the land track, and a groove recording system, which allows information to be recorded only on the groove track; and deciding a first wobble deviation at a wobble start point of the one of the land track and the groove track to which the information is to be recorded, such that the first wobble deviation when the land recording system is selected as the recording system is a reverse of the first wobble deviation when the groove recording system is selected as the recording system, wherein the first wobble deviation, when the groove recording system is selected, is formed such that the first wobble deviation starts from an inner side of the information recording medium in a radial direction and extends towards an outer side of the information recording medium in the radial direction, and wherein the first wobble deviation, when the land recording system is selected, is formed such that the first wobble deviation starts from the outer side of the information recording medium in the radial direction and extends towards the inner side of the information recording medium in the radial direction.