| 发明名称 |
Method and apparatus for scrambling program data for furture viewing |
| 摘要 |
A method for managing program data includes deriving a code word from an entitlement control message in the program data. The code word is re-scrambled with a local key. The code word that was re-scrambled with the local key is inserted into the entitlement control message.
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| 申请公布号 |
US2003206631(A1) |
申请公布日期 |
2003.11.06 |
| 申请号 |
US20010771363 |
申请日期 |
2001.01.26 |
| 申请人 |
CANDELORE BRANT L. |
发明人 |
CANDELORE BRANT L. |
| 分类号 |
H04N5/913;H04N7/16;H04N7/167;(IPC1-7):H04N7/167 |
主分类号 |
H04N5/913 |
| 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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