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 WO03028287(A1) 申请公布日期 2003.04.03
申请号 WO2002US29881 申请日期 2002.09.20
申请人 HUGHES ELECTRONICS CORPORATION;NDS LIMITED;KAHN, RAYNOLD, M.;LEVY, JORDAN 发明人 KAHN, RAYNOLD, M.;LEVY, JORDAN
分类号 H04L9/00;H04L9/08;H04L9/16;H04N7/16;H04N7/167;H04N21/266;H04N21/418;H04N21/4367;H04N21/4405;H04N21/4623;H04N21/472;H04N21/61 主分类号 H04L9/00
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