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 7/24 (2006.01) G11B 7/007 (2006.01) G11B 20/18 (2006.01) G11B 23/34 (2006.01) G11B 23/36 (2006.01)

Patent

CA 2242161

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.

Disque optique dont la surface d'enregistrement compte une première et une deuxième pistes en spirale; l'information est enregistrée sur la première et la deuxième pistes et/ou reproduite à partir d'elles. La première piste a une forme semblable à une rainure, tandis que la deuxième se trouve entre les spires de la première piste rapprochées ; elle a une forme semblable à une surface entre sillons, et l'information est enregistrée dans la première et la deuxième pistes au moyen de différentes méthodes de modulation.

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