发明名称 |
SECURE FAST CHANNEL CHANGING |
摘要 |
<p>A method for communication, including distributing over a communication network multiple channels of digital content, which are encrypted using different, channel- specific control words, and transmitting over the communication network, different, channel-specific entitlement control messages from which the control words are derivable such that each of the different channel- specific control words is derivable from any of the different channel-specific entitlement control messages by authorized receivers of the channels on the communication network. Related methods and apparatus are also included.</p> |
申请公布号 |
WO2012172442(A1) |
申请公布日期 |
2012.12.20 |
申请号 |
WO2012IB52428 |
申请日期 |
2012.05.15 |
申请人 |
NDS LIMITED;WAISBARD, EREZ;SCHNAIDERMAN, ANNA |
发明人 |
WAISBARD, EREZ;SCHNAIDERMAN, ANNA |
分类号 |
H04N21/418;H04N21/438;H04N21/4623 |
主分类号 |
H04N21/418 |
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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