| 摘要 |
PROBLEM TO BE SOLVED: To effectively obtain the high density and large capacity when the MSR or land/groove recording is adopted. SOLUTION: The reliability of the address reading operation is secured similarly to the conventional manner by recording 1st and 2nd addresses defined as the same address number in the header area, and additionally the adjacent distances of each address in the radial direction are expanded in such a manner that the 1st and 2nd addresses are arranged in the radial direction of the disk from a center line of a groove track or land track so as to be formed at the positions displaced in the opposite direction each other, then the effect of the crosstalk is eliminated. Thus, the redundancy of the head area is evaded, and the high density of the disk is promoted.
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