Information recording medium
A technology for recording media and identifying information, which is applied in data recording, information arrangement, information storage, etc., and can solve problems such as information cannot be recorded, recording capacity is limited, and information volume is reduced.
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[0022] Referring to FIG. 3, there is shown an optical disc having land and groove signal tracks 20 and 22 according to one embodiment of the present invention. The land and groove signal tracks 20 and 22 are defined as mutually parallel spiral patterns from the innermost circumference to the outermost circumference of the disc as shown in FIG. 4, or from the innermost circumference to the outermost circumference as shown in FIG. The outer circumference is alternately arranged in each rotation period to form a spiral signal track. Each of the land and groove signal tracks 20 and 22 includes in-phase wobble areas 24A and out-of-phase wobble areas 24B intersecting at each predetermined area and appearing alternately in the circumferential direction, ie, the advancing direction of the respective tracks. These in-phase wobbling areas 24A are arranged alternately with out-of-phase wobbling areas 24B in the diameter direction, that is, in the width direction of the land and groove tr...
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