Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1996-06-13
1999-12-21
Bacares, Rafael
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359177, H04B 1000
Patent
active
060056959
ABSTRACT:
A verification system for a switch or other element in a digital transmission system includes a sample extraction means for tapping a input to the switch, and a similar means for tapping an output of the switch. Analogue features of the signal passing through the switch are tapped off and compared by pattern matching without demultiplexing digital data from the signal passing through the switch. The result of the match can be used to verify the switch has switched correctly, or to monitor other parameters such as cross-talk.
Bacares Rafael
Crane John D.
Nortel Networks Corporation
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