| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical disc, its manufacturing method, a drive method and a drive unit in order to recording/reproducing with high density and at a high speed. <P>SOLUTION: In the optical disc with address information or record information recorded with radial deflection, the record information is positioned to not to face deflection of an adjacent record track, a data-recording part or an address information recording part is arranged with plural deflection areas distributed on a track running full circle, and recorded with the frequency of deflection which is altered by units of several tracks. <P>COPYRIGHT: (C)2003,JPO |
