Information recording/reproducing apparatus and method

H - Electricity – 04 – L

Patent

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H04L 9/00 (2006.01) G11B 20/00 (2006.01) G11B 20/10 (2006.01) G11B 20/12 (2006.01) H04L 9/08 (2006.01)

Patent

CA 2372552

If the generation of a master key that a reproducing apparatus has is older than that used when data is recorded and consequently the data cannot be reproduced, or if the generation of a master key that a recording apparatus has is older than that required when data is to be recorded on a record medium and consequently the data cannot be recorded, the user is prompted to update the master key, and the user acquires a required master key to perform reproducing or recording. the updated master key is delivered in the form handled only by a specific device through a transmission medium such as a record medium, a network, an IC card, or a telephone line by using, e.g., a tree-structured key delivery system.

Si la création d'un code pilote associé à un dispositif de reproduction est plus ancienne que le code utilisé lors de l'enregistrement des données, ce qui empêche la reproduction des données, ou si la création d'un code pilote associé à un dispositif d'enregistrement est plus ancienne que le code nécessaire à l'enregistrement des données sur un support d'enregistrement, ce qui empêche l'enregistrement des données, l'utilisateur doit obligatoirement mettre à jour ce code pilote et acquérir le code pilote nécessaire à la reproduction ou l'enregistrement. Le code pilote mis à jour est transmis sous une forme gérée uniquement par un système spécifique par l'intermédiaire d'un support de transmission, tel qu'un support d'enregistrement, un réseau, une carte à puce ou une ligne téléphonique mettant en application, par exemple, une structure arborescente de transmission de code.

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