Patent ID: 7447142

Claim:
An information recording medium on which a meandered wobble is formed by displacing a groove position in a direction crossing a spiral standard locus according to record data, wherein the wobble is formed such that an average value of displacement of the groove position with the standard locus as a reference is zero for each predetermined data unit of the record data, and wherein the wobble corresponding to the predetermined data unit comprises: a first wobble; and a second wobble, and the second wobble is formed such that the average value of the displacement of the groove position with the standard locus as a reference in the second wobble is set to cancel the average value of the displacement of the groove position with the standard locus as a reference in the first wobble, the record data corresponding to the predetermined data unit comprises: main data; and cancel data having a DC offset value to cancel a DC offset value of the main data, the groove position in the first wobble is displaced according to the main data with the standard locus as a reference, and the groove position in the second wobble is displaced according to the cancel data with the standard locus as a reference.