发明名称 |
System til optisk signaltransmission,navnlig optisk kabelfjernsynssystem med overvågnings- og servicekanalordning |
摘要 |
<p>Operators of fibre-optical transmission networks would like to monitor the signal quality at certain points in the network (for example at the network termination points). The invention specifies a system for this in which … … - the useful signal (S1) is monitored indirectly, i.e. by monitoring an auxiliary signal (S2); … - the means (4, 5, 6, 7) necessary for this can be simultaneously used for setting up a service channel between network node (1) and monitoring point (4); … - the means necessary for this can be supplemented with little expenditure so that the signal monitoring can be coupled with an (advantageous) signal amplification. … …<IMAGE>… </p> |
申请公布号 |
DK0505829(T3) |
申请公布日期 |
1997.06.23 |
申请号 |
DK19920104121T |
申请日期 |
1992.03.11 |
申请人 |
ALCATEL N.V.;ALCATEL SEL AKTIENGESELLSCHAFT |
发明人 |
HEIDEMANN, ROLF, DR. |
分类号 |
H04B3/46;H04B10/00;H04B10/02;H04B10/077;H04B10/08;H04B17/00;H04N7/22;H04N17/00;(IPC1-7):H04B10/08 |
主分类号 |
H04B3/46 |
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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