Optical disc apparatus accessing method and system therefor

Details Optical disc apparatus accessing method and system therefor Optical disc apparatus accessing method and system therefor

G - Physics

11

B

G11B 7/28 (2006.01) G11B 7/085 (2006.01) G11B 19/02 (2006.01) G11B 21/08 (2006.01) G11B 7/00 (2006.01) G11B 7/0037 (2006.01)

Patent

CA 2210108

There are provided a plurality of information recording surfaces to be reproduced on one side of an optical disc to be reproduced, and when accessing control of an optical pickup over a plurality of recording layers is performed, first, a beam focal point of the optical pickup is moved using a moving means to the recording layer on which target information is recorded to thereby perform switching processing of information recording layers during reproduction, after which accessing control of the optical pickup is performed using control processing means similar to the access between the same recording layers, and with respect to the pausing operation, in a layer in which information is recorded from the inner circumference to the outer circumference, one track jumping is repeated toward the inner circumference, while in a layer in which information is recorded from the outer circumference to the inner circumference, one track jumping is repeated toward the outer circumference.

L'invention est constituée par une pluralité de couches d'enregistrement créées sur une même face d'un disque optique. Dans la commande du capteur optique, le foyer du faisceau du capteur est placé sur la couche d'enregistrement sur laquelle l'information cible est enregistrée par un mécanisme qui passe d'une couche d'enregistrement à l'autre, puis, sous l'effet d'un second mécanisme, si l'information est enregistrée de l'intérieur vers l'extérieur sur la couche en cause, le foyer du faisceau est déplacé d'une piste à l'autre en progressant vers l'intérieur, alors que si l'information est enregistrée de l'extérieur vers l'intérieur, le foyer du faisceau est déplacé d'une piste à l'autre en progressant vers l'extérieur.

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