发明名称 |
Method and apparatus for encrypting media programs for later purchase and viewing |
摘要 |
A system and method for storing and retrieving program material for subsequent replay is disclosed. The method includes accepting a receiver ID associated with a receiver key stored in a memory of the receiver, determining a pairing key for encrypting communications between the conditional access module and the receiver, encrypting the pairing key with the receiver key, and transmitting a message comprising the encrypted pairing key to the receiver. The apparatus comprises a receiver for receiving a data stream transmitting a media program encrypted according to a media encryption key and an encrypted media encryption key and a conditional access module, communicatively coupleable with the receiver. |
申请公布号 |
US8677152(B2) |
申请公布日期 |
2014.03.18 |
申请号 |
US20080172901 |
申请日期 |
2008.07.14 |
申请人 |
KAHN RAYNOLD M.;GAGNON GREGORY J.;HA DAVID D.;KLAUSS PETER M.;CURREN CHRISTOPHER P.;COCCHI RONALD P.;JAMES THOMAS H.;THE DIRECTV GROUP, INC. |
发明人 |
KAHN RAYNOLD M.;GAGNON GREGORY J.;HA DAVID D.;KLAUSS PETER M.;CURREN CHRISTOPHER P.;COCCHI RONALD P.;JAMES THOMAS H. |
分类号 |
H04L9/08;H04L9/28;H04L;H04L9/00;H04L9/14;H04N7/167 |
主分类号 |
H04L9/08 |
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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