发明名称 |
SCRAMBLING UNIT FOR A DIGITAL TRANSMISSION SYSTEM |
摘要 |
<p>An independant scrambling unit 1 for a digital audiovisual transmission system, the scrambling unit 1 comprising an input for receiving an assembled transport packet stream from a physically separate multiplexer 4, a scrambling device for scrambling the received transport stream according to a randomising control word and an output for sending the scrambled transport stream to a transmitter means for subsequent transmission. The scrambling unit 1 may also be used to introduce other packet data in the data stream. <IMAGE></p> |
申请公布号 |
EP1040663(A1) |
申请公布日期 |
2000.10.04 |
申请号 |
EP19980962647 |
申请日期 |
1998.12.23 |
申请人 |
CANAL+ SOCIETE ANONYME |
发明人 |
TRANCHARD, LIONEL;DECLERCK, CHRISTOPHE |
分类号 |
H04H20/00;H04L9/08;H04N7/167;H04N7/24;H04N7/52;(IPC1-7):H04N7/167 |
主分类号 |
H04H20/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|