摘要 |
An optical disk comprising a substrate, and a plurality of tracks formed on the substrate, wherein the plurality of tracks include groove tracks consisting of a plurality of grooves mutually space apart by a fixed space, and land tracks consisting of areas between the groove tracks, wherein the borders between the groove tracks and the land tracks represent information using the waveforms from their wobbling patterns, wherein the period of the wobbling waveforms of the borders are constant on each border, but the wobbling waveforms of the opposite portions of the borders across the track are shifted in phase by a predetermined phase difference.
|