Optical recording medium, information processing device...

G - Physics – 11 – B

Patent

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G11B 20/12 (2006.01) G11B 7/00 (2006.01)

Patent

CA 2489948

An optical disc (2) onto which data can be recorded. The optical disc has a buffer area (data run in DRi, data run out DRo) for random access before and after each of the blocks (BLK, BLK1, CLK2). When starting recording of a new block, buffer areas of the new block and the existing block are overlapped when recording so that no empty space is caused. In the buffer area, phase synchronization loop for data reproduction, signal patterns for automatic gain adjustment and light source power automatic adjustment, synchronization pattern, and signal patterns used for generating reproduction clock and detecting a block reproduction end are recorded.

Cette invention concerne un disque optique (2) sur lequel des données peuvent être enregistrées. Ce disque optique comprend une zone tampon (entrée de données DRi, sortie de données DRo) permettant un accès aléatoire avant et après chacun des blocs (BLK, BLK1, BLK2). Lorsque l'enregistrement d'un nouveau bloc commence, les zones tampons du nouveau bloc et du bloc en cours se chevauchent pendant l'enregistrement pour qu'aucun espace vide ne soit créé. Dans la zone tampon, la boucle de synchronisation de phase servant à reproduire les données, les motifs de signaux de réglage automatique du gain et de réglage automatique de l'intensité de la source lumineuse, le motif de synchronisation et les motifs de signaux servant à générer une horloge de reproduction et à détecter la fin de la reproduction d'un bloc sont enregistrés.

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