Patent Number: 6,298,033

Title: Recording/reproducing optical disk with constant product of rotation number and number of sector areas and recording/reproducing apparatus using same

Abstract: A data recording/reproducing optical disk comprises a plurality of land areas and a plurality of groove areas, which are formed in configuration as concentric circles in such a manner that a plurality of tracks are formed on the plurality of land areas and the plurality of groove areas, the plurality of tracks are partitioned into a plurality of zones provided on the disk from the inner side to the outer side thereof and a plurality of sector areas are formed on a track in a continuous manner with the plurality of sector areas on a next track, wherein the disk in use is rotated such that a rotation number of the disk in a zone is sequentially slowed in successive zones toward the outer side of the disk along a radial direction under a condition of a constant product of a rotation number and the number of sector areas in one track in each zone.

Inventors: Tanoue; Koki (Yokohama, JP), Osawa; Hideaki (Yokohama, JP)

Assignee: Kabushiki Kaisha Toshiba

International Classification: G11B 20/10 (20060101); G11B 20/12 (20060101); G11B 27/30 (20060101); G11B 27/24 (20060101); G11B 27/19 (20060101); G11B 7/007 (20060101); G11B 7/26 (20060101); G11B 007/24 ()

Expiration Date: 10/02/2018