发明名称 |
Method and apparatus for controlling paired operation of a conditional access module and an integrated receiver and decoder |
摘要 |
A method and apparatus that selectively pairs a receiver (132) configured to receive a media program encrypted according to a media encryption key and a conditional access module. In one embodiment, the apparatus comprises a security module (508) for receiving and modifying the media encryption key, and a transport module (412), comprising a decryptor (524) for decrypting the media program. The media encryption key has a portion indicating a first state in which the media program is to be viewable by a set of receivers or a second state in which the media program is to be viewable only by a subset of the set of receivers.
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申请公布号 |
US7797552(B2) |
申请公布日期 |
2010.09.14 |
申请号 |
US20040490261 |
申请日期 |
2004.08.05 |
申请人 |
THE DIRECTV GROUP, INC.;NDS GROUP LTD. |
发明人 |
KAHN RAYNOLD;LEVY JORDAN |
分类号 |
G06F12/14;H04L9/00;H04L9/08;H04L9/16;H04N7/16;H04N7/167 |
主分类号 |
G06F12/14 |
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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