Optical disk having wobble patterns

An optical disk which comprises a track groove and on which information is recorded along the track groove,

• wherein the track groove includes a plurality of unit sections that are arranged along the track groove and that have side faces displaced periodically along the track groove, and
• wherein the side faces of the unit sections are displaced in a single fundamental period, and
• wherein subdivided information allocated to each said unit section is represented by a combination of wobble patterns selected from multiple types of wobble patterns that have been defined so as to correspond to respective signal waveforms that rise and fall mutually differently.