Self synchronizing system

Claim 1

A COMMUNICATION SYSTEM FOR TRANSMITTING FROM A SENDING EQUIPMENT A CARRIER WAVE MODULATED WITH AN INFORMATION SIGNAL HAVING A PREDETERMINED FREQUENCY BAND TO A RECEIVING EQUIPMENT, SAID SENDING EQUIPMENT COMPRISING AN INPUT, A CARRIER WAVE OSCILLATOR, SYNCHRONIZING PULSE SEPARATOR MEANS CONNECTED TO SAID INPUT FOR DERIVING FROM SAID INFORMATION SIGNAL PORTIONS THEREOF SPACED AT PREDETERMINED TIME POSITIONS, MEANS COUPLED TO SAID SEPARATOR MEANS FOR GENERATING SIGNAL MARKINGS IN COINCIDENCE WITH SAID SPACED PORTIONS EACH OF SAID SIGNAL MARKINGS CONSISTING OF A PLURALITY OF SINE WAVE CYCLES HAVING A RELATIVELY NARROW BANDWIDTH, AND MEANS CONNECTED TO THE SAID INPUT AND THE SAID CARRIER WAVE OSCILLATOR AND THE SAID SIGNAL MARKINGS GENERATING MEANS FOR MODULATING THE CARRIER WAVE OSCILLATIONS WITH THE SUPERPOSED INPUT INFORMATION SIGNAL AND SIGNAL MARKINGS; SAID RECEIVING EQUIPMENT COMPRISING FILTER MEANS FOR DERIVING FROM THE MODULATED CARRIER WAVE THE PORTIONS THAT FALL WITHIN SAID RELATIVELY NARROW BANDWIDTH, MEANS CONNECTED TO THE SAID FILTER MEANS FOR PRODUCING GATE PULSES SPACED AT SAID PREDETERMINED TIME POSITIONS, GATING MEANS CONNECTED TO SAID GATE PULSE PRODUCING MEANS AND ADAPTED TO RECEIVE THE SAID MODULATED CARRIER WAVE FOR DERIVING PORTIONS THEREOF CORRESPONDING TO SAID TIME POSITIONS OF SAID SIGNAL MARKINGS, AND MEANS INDEPENDENT OF SAID TRANSMITTER CARRIER WAVE OSCILLATOR AND COUPLED TO SAID GATING MEANS FOR GENERATING A CONTINUOUS SINUSOIDAL OSCILLATION OF A FREQUENCY EQUAL TO THAT OF SAID CARRIER WAVE OSCILLATOR AND A PHASE LOCKED TO THE PHASE OF THE LASTMENTIONED CARRIER WAVE PORTIONS.