发明名称 |
System and method for providing a secure environment for performing conditional access functions for a set top box |
摘要 |
A system and method are provided for decrypting a selected program. The system and method can receive at least one authorization message and at least one control message associated with a selected program. The system and method stores the at least one authorization message. The system and method transmits a first control signal if the at least one control message specifies a type of program that can be decrypted given the at least one authorization message and transmits a second control signal if the at least one control message specifies a type of program that can not be decrypted by the decryption device given the at least one authorization message.
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申请公布号 |
US7461396(B2) |
申请公布日期 |
2008.12.02 |
申请号 |
US20060342766 |
申请日期 |
2006.01.30 |
申请人 |
PALADIN PATENTS INC. |
发明人 |
BROWN CHRIS;SO NICOL;KAZMIERCZAK GREGORY |
分类号 |
H04L9/32;G06F15/16;H04N7/16 |
主分类号 |
H04L9/32 |
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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