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    PROTOCOLE DE COMMANDE A DISTANCE D UNE ACTION LOCALE DE GENE RATION D UN MESSAGE D ORDRE
    81.
    发明公开
    PROTOCOLE DE COMMANDE A DISTANCE D UNE ACTION LOCALE DE GENE RATION D UN MESSAGE D ORDRE 有权
    对于一个本地行动的远程控制方法，以产生命令消息

    公开(公告)号：EP1470712A2

    公开(公告)日：2004-10-27

    申请号：EP03743908.0

    申请日：2003-01-21

    申请人： Viaccess

    发明人： VIGARIE, Jean-Pierre ,  BECKER, Claudia ,  CODET, André ,  FEVRIER, Pierre ,  GUIONNET, Chantal

    IPC分类号： H04N7/16

    CPC分类号： H04N21/6543 ,  H04N7/163 ,  H04N7/17345 ,  H04N21/266 ,  H04N2005/91364

    摘要： The invention relates to a remote control protocol for a local action to generate a command message (OM), which permits a broadcaster to control a local action in at least one receiving station comprising: a step for transmission of an authorisation message (HM) from the broadcaster to the receiving station(s) and a verification step (4) in said receiving station(s), for transmitted authenticity parameters and addresses, with regard to parameters memorised in each of said receiving stations. The invention is characterised in that the authorisation message (HM) comprises a generation action (CM), at the level of the receiving station(s), a command message (OM), calculated locally and said protocol also comprises, conditional on the verification step (4), an interpretation step (10) of said action (CM) transmitted with said authorisation message (HM) and a local generation step (20) for a command message (OM) in response to said interpretation step (10). The above finds application particularly in transmission of encoded television information (I*).