Java conditional access apparatus

H - Electricity – 04 – L

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Details

H04L 9/18 (2006.01) H04N 7/167 (2006.01)

Patent

CA 2596583

A java (registered trademark) limited receiver in which description of CA control means in a Java (registered trademark) computer program obviates the need for porting a CA control computer program, enables development of a CA system over terminals in a short time, and obviates the need for terminal replacement. The Java (registered trademark) limited receiver comprises a descramble circuit, a key generation information acquisition library, a Java (registered trademark) VM, storage means, limit cancel control means, and an API having registering means. On receiving a function from a CA control computer program, the registering means registers the received function. When the API receives channel information, channel information to be reproduced is sent to the CA control computer program. The CA control computer program requires the key generation information acquisition library to acquire key generation information corresponding to the received channel information and transfers the received key generation information to the limit cancel control means.

La présente invention a trait à un récepteur limité Java (marque déposée) dans lequel une description d'un moyen de commande CA dans un programme informatique Java élimine la nécessité de portage d'un programme informatique de commande CA, permettant le développement d'un système CA sur des terminaux en un court laps de temps, et élimine la nécessité de remplacement de terminaux. Le récepteur limité Java comporte un circuit de désembrouillage, une bibliothèque d'acquisition d'information de génération de clé, une machine virtuelle Java, un moyen de stockage, un moyen de commande d'annulation de limites, et une interface de programmation comprenant un moyen d'enregistrement. Lorsque l'interface de programmation reçoit une information de canal, l'information de canal à être reproduite est transmise au programme informatique de commande CA. Le programme informatique de commande CA a besoin de la bibliothèque d'acquisition d'information de génération de clé pour l'acquisition de l'information de génération de clé correspondant à l'information de canal reçue et transfère l'information de génération de clé reçue au moyen de commande d'annulation de limites.

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