发明名称 |
Conditional access information arrangement. |
摘要 |
The present invention is a system/method for layered entitlement data transmission/reception. A receiver embodiment includes a packet transport processor for selecting packets having payloads containing a conditional access payload header and a remaining payload of entitlement data. Respective payload headers include groups of bytes which are coded in a manner to allow or disallow the respective receiver from processing the entitlement data. A conditional access filter preprogrammed with a subscriber specific conditional access codeword examines respective byte groupings of the conditional access header for a match with the subscriber specific conditional access codeword. Only if a match occurs is the processor permitted to process the entitlement data. |
申请公布号 |
HK1005403(A1) |
申请公布日期 |
2004.12.24 |
申请号 |
HK19980104418 |
申请日期 |
1998.05.22 |
申请人 |
THOMSON CONSUMER ELECTRONICS, INC. |
发明人 |
GREGORY GEORGE TAMER;MICHAEL SCOTT DEISS;JOHN WILLIAM CHANEY;JAMES EDWIN HAILEY |
分类号 |
H04N5/00;H04N5/44;H04N7/16;H04N7/167;H04N21/266;H04N21/418;H04N21/426;H04N21/4385;H04N21/4405;H04N21/4623;H04N21/4627 |
主分类号 |
H04N5/00 |
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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