Optical disc having uniform structure

Details Optical disc having uniform structure Optical disc having uniform structure

G - Physics

11

B

G11B 7/24 (2006.01) G11B 7/0037 (2006.01) G11B 7/007 (2006.01) G11B 27/19 (2006.01) G11B 27/24 (2006.01) G11B 27/30 (2006.01) G11B 20/14 (2006.01)

Patent

CA 2384263

An optical disc is manufactured under a uniform condition by forming grooves and lands on the entire surface of the disc. The optical disc is configured to obtain a reliable reproduction signal, and the grooves and lands are formed on a lead- in area, a user data area and a lead-out area of the optical disc. Since the same manufacturing condition can be adopted in mastering discs, the yield can be enhanced and the manufacturing cost can be reduced.

Un disque optique est fabriqué sous une condition uniforme en formant des rainures et des sillons sur toute la surface du disque. Le disque optique est configuré de façon à obtenir un signal de reproduction fiable, et les rainures et les sillons sont formés sur une zone d'entrée, une zone de données utilisateur et une zone de sortie du disque optique. Etant donné que la même condition de fabrication peut être adoptée pour le matriçage des disques, on peut améliorer le rendement et réduire le coût de fabrication.

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