| 摘要 |
A recording disk and a recording apparatus prevent illegal copying. In a reproduction control data area, pits of a pit train on a plurality of adjacent tracks are aligned in the directions which cross the tracks perpendicularly, wherein the pit train represents reproduction control data indicative of a reproduction control method to be used for reproducing information data. The length of a unit interval on the track corresponding to one bit of the reproduction control data is made shorter than a length that is twice as long as a length of rotation jitter which is generated when a spindle motor is rotated under a rotation control method using a frequency generator
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