Optical disk, and information recording/reproduction apparatus

Details Optical disk, and information recording/reproduction apparatus Optical disk, and information recording/reproduction apparatus

G - Physics

11

B

G11B 7/007 (2006.01) G11B 7/004 (2006.01) G11B 7/013 (2006.01) G11B 7/085 (2006.01) G11B 20/12 (2006.01) G11B 20/18 (2006.01) G11B 27/19 (2006.01) G11B 27/24 (2006.01) G11B 27/30 (2006.01) G11B 7/0045 (2006.01) G11B 7/005 (2006.01) G11B 7/09 (2006.01) G11B 27/32 (2006.01)

Patent

CA 2125331

In an optical disk having a recording plane with a spiral first track and a spiral second track, information being recorded into and/or reproduced from said first and second tracks, the first track is formed in a groove-like shape, the second track is formed between adjacent first tracks and in a land-like shape, and information is recorded in the first and second tracks in different modulation methods.

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