Tekade Felten & Guilleaume Fernmeldeanlagen Gmbh

Gerd Rohrbach

Ludwig Kittel

Edgar Bader

Jurgen Petersen

Disclosed is a full duplex communication system connecting by a two wire link a main station and a local station. Both the main station and the local station has a clock pulse generator. The local clock pulse generator is switchable between a pulse rate which corresponds to that of the main clock and another pulse rate which defers about a fixed value. A comparator compares the phase of the incoming signal with the local clock signal and switches the local clock generator when its output is out of phase with the received signals.

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Nuremberg, Germany

Gerd Rohrbach