PIPELINE COMMUNICATION SYSTEM Russian patent published in 2006 - IPC H04B13/02 

FIELD: communications engineering, possible use in telecontrol systems for diagnostics and control over remote objects via the pipeline.

SUBSTANCE: in accordance to invention, variable component is extracted from received signal, then signal is amplified and limited by amplitude, then differentiated - result of differentiation is sent to comparator, where it is compared to positive and negative thresholds, due to that impulses reservoir formed, controlling amplifier operation mode (amplification, weakening), after differentiation signal is filtered, and then through controlled amplifier useful signal passes in amplified fashion, and interference is suppressed, then signal is divided on two branches, both branches consist of band filters (750 Hz, 500 Hz) and signal detectors, after those signal is sent to balance divider, evening out signal amplitudes, and then to differential comparator, and then - to controller for decoding. For control over amplifier-limiter signal after detectors is sent to OR circuit and, further, to smoothing filter, output level of which is used for controlling aforementioned amplifier-limiter.

EFFECT: increased sensitivity and interference resistance of communication system receiver, and successively, increased speed of transmission and decreased consumption of electric energy.

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