| 摘要 |
PROBLEM TO BE SOLVED: To provide an information recording and reproducing system in which stable signal quality is guaranteed at all recording positions of inner and outer peripheries, and which has high reliability and a large capacity. SOLUTION: The recording region of a disk type recording medium 1 is sectioned to a plurality of zones 2a-2f being adjacent successively in the radial direction, a clock for recording and reproducing is allocated for every zone of zone 2a-2f, and recording/reproducing of data is performed by clocks allocated for every zone of zones 2a-2f. COPYRIGHT: (C)2004,JPO
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