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.
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
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