发明名称 |
Method and apparatus for controlling the operation of a signal decoder in a broadcasting system |
摘要 |
In a method and apparatus for controlling the operation of a signal decoder in a broadcasting system, a broadcast signal and an encrypted signature are generated and the signature is added to the signal. The signal together with the signature is broadcasted and received in the decoder, where the signature is decrypted and compared with a verification value. If a match occurs, further operation of the decoder is allowed. If a match does not occur, further operation of the decoder is disallowed.
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申请公布号 |
US6021197(A) |
申请公布日期 |
2000.02.01 |
申请号 |
US19960665605 |
申请日期 |
1996.06.18 |
申请人 |
IRDETO B.V. |
发明人 |
VON WILLICH, MANFRED;RIX, SIMON PAUL ASHLEY |
分类号 |
H04B7/005;H04B7/08;H04H1/00;H04N7/167;(IPC1-7):H04N7/167;G11B23/28;H04L9/00;H04K1/00 |
主分类号 |
H04B7/005 |
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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