发明名称 |
SIGNAL TRACING SYSTEM AND METHOD |
摘要 |
The invention relates to a system and method for determining the origin of a signal received by a pay-per-view television subscriber in a given region. The invention makes use of a system comprising encryption means which are located at the premises of a main operator, means for transmitting an encrypted video signal to at least one local operator and decryption means which are located at the premises of said local operator. The invention is characterised in that the decryption means comprise identification means that replace all or part of the decrypted video signal by an identification signal characterising the decryption means. |
申请公布号 |
WO02069635(A1) |
申请公布日期 |
2002.09.06 |
申请号 |
WO2002IB00555 |
申请日期 |
2002.02.25 |
申请人 |
NAGRAVISION SA;GOEKE, MAXIME |
发明人 |
GOEKE, MAXIME |
分类号 |
G09C1/00;H04N7/16;(IPC1-7):H04N7/16 |
主分类号 |
G09C1/00 |
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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