Trouble surveillance apparatus for a transmission system

Details Trouble surveillance apparatus for a transmission system Trouble surveillance apparatus for a transmission system

1995-08-29

1997-12-23

Marcelo, Melvin

Multiplex communications

Diagnostic testing

Fault detection

370250, 371 682, H04J 314, H04J 1400

Patent

active

057012938

ABSTRACT:
An input memory storing data representing lines and paths of the transmission system. Every time such data is input in the memory, a comparison element compares the previous state of the system stored in the memory with a state of the system currently input in the memory. If no change is found between them, the current state of the system is kept the same as the previous state thereof. This means that no new trouble is caused or that no rectification of trouble is made. It is therefore judged that no trouble is caused. If any change is found, a trouble judging element seeks trouble corresponding to the change to store data as a link in a trouble memory. Unless any change is found, the previous input data is only compared with the currently input data. The process at an idling time can thus be conducted at a higher speed.

REFERENCES:
patent: 4592044 (1986-05-01), Ferenc
patent: 5197062 (1993-03-01), Picklesimer

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