Multiple-spiral hybrid disc for e-book applications

Details Multiple-spiral hybrid disc for e-book applications Multiple-spiral hybrid disc for e-book applications

G - Physics

11

B

G11B 7/007 (2006.01)

Patent

CA 2557292

The invention relates to an optical disc (10) comprising a hybrid information layer with at least two congruently adjoining spirals, whereby a first spiral (12) of said adjoining spirals comprises a ROM section containing read only data and a second spiral (14) of said adjoining spirals comprises a recordable section having a pre-groove provided for tracking purposes during recording. Said ROM section and said recordable section are arranged at least partially adjoining each other thereby forming an overlap region where a track of said first spiral containing read only data is arranged next to an associated track of said second spiral containing a pre-groove.

L'invention concerne un disque optique (10) comprenant une couche d'informations hybride pourvue d'au moins deux spirales adjacentes congruentes. La première spirale (12) comprend une section de mémoire ROM contenant des données non inscriptibles et la deuxième spirale (14) comprend une section enregistrable comprenant un pré-sillon prévu à des fins d'alignement pendant l'enregistrement. La section de mémoire ROM et la section enregistrable sont disposées de façon qu'elles soient au moins partiellement adjacentes l'une à l'autre, formant ainsi une zone de chevauchement dans laquelle une piste de la première spirale contenant des données non inscriptibles est disposée près d'une piste associée de la seconde spirale contenant un pré-sillon.

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