发明名称 |
DYNAMICALLY SHIFTING CONTROL WORD |
摘要 |
A method for generating a plurality of control words, each control word controlling access to an object. The method includes providing a control word packet (CWP), generating a first control word (CW) from the CWP, providing a second CW generation input and producing a second CW based, at least in part, on both of the following the first CW and the second CW generation input. Control word generating apparatus for generating a plurality of control words is also disclosed. |
申请公布号 |
WO0191466(A3) |
申请公布日期 |
2002.04.11 |
申请号 |
WO2001IL00434 |
申请日期 |
2001.05.16 |
申请人 |
NDS LIMITED;PATINKIN, AKIVA;WALD, STEPHANIE;POUPKO, AVRAHAM |
发明人 |
PATINKIN, AKIVA;WALD, STEPHANIE;POUPKO, AVRAHAM |
分类号 |
H04N7/16;H04N7/167;H04N21/2343;H04N21/258;H04N21/266;H04N21/418;H04N21/478 |
主分类号 |
H04N7/16 |
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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