Data recording medium and reproducing apparatus thereof

G - Physics – 11 – B

Patent

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Details

G11B 20/12 (2006.01) G06F 3/06 (2006.01) G11B 7/007 (2006.01) G11B 19/12 (2006.01) G11B 20/00 (2006.01) G11B 20/10 (2006.01)

Patent

CA 2408570

A recordable data recording medium for recording modulated inherent data and data decryptable by a decryption key generated therefrom, and an optical disc drive which is not provided with such a function as discriminating a recordable data recording medium from a reproduction-only data recording medium by differentiating the modulation system for the inherent data from that for the reproduction-only data recording medium. Installation of a data recording medium discriminating function is prompted by disabling reproduction of the recordable data recording medium and copyright protective function is ensured.

L'invention concerne un support d'enregistrement de données enregistrables conçu pour enregistrer des données inhérentes modulées et des données déchiffrables par une clé de déchiffrage générée, ainsi qu'une commande à disques optique qui ne possède pas la fonction de différencier un support d'enregistrement de données enregistrable et un support d'enregistrement de données de reproduction uniquement, par différentiation du système de modulation pour le support d'enregistrement de données inhérentes et pour le support d'enregistrement des données de reproduction uniquement. L'installation d'une fonction de discrimination de support d'enregistrement de données empêche la reproduction d'un support d'enregistrement de données enregistrable et la fonction de protection des droits d'auteur est assurée.

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