Communication receiver incorporating tone operated pulser circuit and electronic switch

Abstract

Abstract 1. A COMMUNCIATION RECEIVER FOR RECEIVING CARRIER SIGNALS MODULATED BY AT LEAST ONE CONTROL TONE, SAID RECEIVER COMPRISING A PROCESSING CIRCUIT FOR RECEIVING THE MODULATED CARRIER SIGNALS AND DETECTING THE CONTROL TONE THEREIN, A PULSER CIRCUIT COUPLED TO SAID PROCESSING CIRCUIT AND OPERATIVE TO PRODUCE A SERIES OF PULSES FOR INTERMITTENTLY RENDERING SAID PROCESSING CIRCUIT OPERATIVE, A DECODER CIRCUIT COUPLED TO SAID PROCESSING CIRCUIT AND HAVING FIRST AND SECOND OUTPUTS, SAID DECODER CIRCUIT PRODUCING AT SAID FIRST OUTPUT A FIRST CONTROL SIGNAL COMMENCING WITH THE INITIATION OF THE CONTROL TONE AND PRODUCING AT SAID SECOND OUTPUT A SECOND CONTROL SIGNAL COMMENCING A PREDETERMINED TIME AFTER INITIATION OF THE CONTROL TONE, SAID PULSER CIRCUIT HAVING AN INPUT COUPLED TO THE FIRST OUTPUT OF SAID DECODER CIRCUIT AND RESPONSIVE TO THE APPLICATION THERETO OF SAID FIRST CONTROL SIGNAL TO FURNISH A CONTINUOUS SUPPLY VOLTAGE FOR SAID PROCESSING CIRCUIT FOR AN INTERVAL SUBSTANTIALLY LONGER THAN THE DURATION OF EACH PULSE IN SAID SERIES OF PULSES, AN ELECTRONIC SWITCH CIRCUIT COUPLED TO THE SECOND OUTPUT OF SAID DECODER CIRCUIT AND RESPONSIVE TO SAID SECOND CONTROL SIGNAL TO PROVIDE AN ENABLING SIGNAL, A UTILIZATION CIRCUIT HAVING AN INPUT COUPLED TO SAID SWITCH CIRCUIT AND RESPONSIVE TO THE ENABLING SIGNAL TO PROVIDE AN OUTPUT SIGNAL, AND AN ANNUNCIATOR COUPLED TO SAID UTILIZATION CIRCUIT FOR CONVERTING THE OUTPUT SIGNAL INTO USABLE FORM.

Inventors

No inventors recorded.

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