发明名称 |
METHODS FOR BROADCASTING AND RECEIVING A SCRAMBLED MULTIMEDIA PROGRAMME, NETWORK HEAD, TERMINAL, RECEIVER AND SECURITY PROCESSOR FOR THESE METHODS |
摘要 |
<p>A method of broadcasting a scrambled multimedia program, by way of a broadcast network, in which before transmitting a license key; a network head carries out a step of authenticating a terminal, and if the terminal has successfully authenticated, the network heads sends the terminal a license transmission message containing the license key or cryptogram of the license key, by way of a point-to-point link, and if the terminal is not successfully authenticated, the network head acts (at 200) in such a way as to prevent the complete descrambling by this terminal of the scrambled multimedia program broadcast.</p> |
申请公布号 |
EP2027667(A1) |
申请公布日期 |
2009.02.25 |
申请号 |
EP20070788889 |
申请日期 |
2007.06.13 |
申请人 |
VIACCESS |
发明人 |
CARLES, PHILIPPE;CHEVALLIER, ANTHONY;DUBROEUCQ, GILLES;LANFRANCHI, STEPHANE |
分类号 |
H04L9/32;H04N7/167 |
主分类号 |
H04L9/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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