| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent interference of wobble signals from both side groups for the land track when a groove is wobbled to control the disk rotation and to generate a clock signal, in an optical disk of a land/groove recording system having a pre-format ID for each sector. <P>SOLUTION: This disk is an optical disk of a zone format in which a disk surface is divided into a plurality of zones at a radial position, in the optical disk of land/groove recording format in which the track of one rotation of the disk is constituted in sectors of the number of integer, wobble of the cycles of the prescribed integer is added to a groove in each sector. Wobble of each cycle is adjusted so as to be made the same phase between adjacent groups in each zone. Wobble of the cycles of the prescribed integer is divided into a plurality of unit wobble columns for each prescribed unit cycle, Binary information relating to a sector address is expressed by modulating a period of wobble in the unit wobble string. The binary information relating to the sector address comprises zone numbers to which each sector belongs. <P>COPYRIGHT: (C)2004,JPO |
