Optical disk having a continuous recording track formed of alternating land and groove revolutions

An optical disk comprising:

• grooves formed on a surface of the disk;
• and
• lands positioned between said grooves, information recording tracks being formed both in said grooves and on said lands, the information recording tracks each having a plurality of track sectors respectively forming information recording units;
• wherein
• said grooves are wobbled in a radial direction of the disk to represent rotation and sector management information of the disk such as a sector address,
• at least one pair of a wobbled Tart and an unwobbled part arranged one after another are provided every revolution, such that wobbled parts in the grooves next to each other do not overlap in the radial direction of the disk,
• the tracks on the disk are divided into a plurality of annular zones,
• land and groove tracks alternate every revolution to form a continuous information recording spiral, and
• a track sector immediately before a connecting point between a land and groove track has a connection mark part formed of a wobbled part having a wobbling period different from the wobbling period of the wobbled part representing the sector management information and the wobbled part representing the disk rotation information.

An optical disk, comprising:

• grooves formed on a surface of the disk;
• and
• lands positioned between said grooves, information recording tracks being formed both in said grooves and on said lands, the information recording tracks each having a plurality of track sectors respectively forming information recording units;
• wherein
• said grooves are wobbled in a radial direction of the disk to represent rotation and sector management information of the disk such as a sector address,
• at least one pair of a wobbled part and an unwobbled part arranged one after another are provided every revolution, such that wobbled parts in the grooves next to each other do not overlap in the radial direction of the disk,
• the tracks on the disk are divided into a plurality of annular zones,
• land and groove tracks alternate every revolution to form a continuous information recording spiral, and
• the total length of a wobbled part and an unwobbled part which are arranged one after another in a part of a sector immediately before a connecting point is different from the total length of a wobbled part and an unwobbled part which are arranged one after another in other sectors.

An optical disk comprising:

• grooves physically formed on a surface of the disk;
• and
• lands positioned between said grooves, information recording tracks being formed both in the grooves and on the lands, the information recording tracks each having a plurality of track sectors respectively forming information recording units;
• wherein
• the information recording tracks include intermittent wobbled regions,
• said wobbled regions include regions which are not frequency-modulated,
• said wobbled regions represent a rotation control signal which ensures, during playback of signals, that the disk is rotated at a constant linear velocity, and
• said wobbled regions which are not frequency modulated represent a reference clock used for writing during signal recording.