Panoramic receiver for multiplexing communication signals from multiple sources

Claim 1

IN A SUPERHETERODYNE RECEIVER FOR RECEIVING SIGNALS FROM MULTIPLE SOURCES, COMPRISING A MIXER HAVING AN INPUT FOR THE SIGNALS, A LOCAL OSCILLATOR INPUT AND AN OUTPUT, AN OUTPUT DETECTOR, NARROW-BAND INTERMEDIATEFREQUENCY CIRCUITS CONNECTED TO RECEIVE SIGNALS FROM THE OUTPUT OF SAID MIXER AND TO SUPPLY SIGNALS TO SAID DETECTOR, AND A LOCAL OSCILLATOR, SAID LOCAL OSCILLATOR CONNECTED TO THE OSCILLATOR INPUT OF SAID MIXER AND HAVING AN INPUT RESPONSIVE TO APPLICATION TO SWEEP SIGNALS TO VARY ITS OUTPUT FREQUENCY, THEREBY TO TUNE RECEIVER SUCCESSIVELY OT DIFFERENCT RADIO-FREQUECNY CHANNELS WITHIN A PRESCRIBED FREQUENCY BAND, A SWEEP GENERATOR HAVING AN OUTPUT CONNECTED TO SAID INPUT OF SAID LOCAL OSCILLATOR TO APPLY A REPETITIVE SWEEP WAVEFORM TO SAID RECEIVER TO CAUSE IT TO BE TUNED SUCCESSIVELY THROUGH DIFFERENT FREQUENCY CHANNELS REPEATEDLY WITHIN SAID PRESCRIBED FREQUENCY BAND; A PLURALITY OF AUDIO-FREQUENCY OUTPUT CHANNELS EACH OF SAID AUDIO-FREQUENCY OUTPUT CHANNELS HAVING AN INTEGRATOR AND A GATE, THE OUTPUT OF SAID DETECTOR BEING CONNECTED THROUGH EACH OF SAID GATES TO THE INPUT OF THE RESPECTIVE INTEGRATOR, SAID GATES NORMALLY BEING OPEN TO ISOLATE SAID AUDIO-FREQUENCY CHANNELS FROM SAID DETECTOR EACH OF SAID GATES HAVING A CONTROL CIRCUIT, A TIME DELAY CIRCUIT CONNECTED TO EAC OF SAID CONTROL CIRCUITS, MEANS CONNECTED TO SAID SWEEP GENERATOR FOR APPLYING TO EACH OF SAID TIME DELAY CIRCUITS A PULSE SYNCHRONIZED WITH THE START OF EACH OF SAID SWEEP WAVEFORMS, EACH OF SAID TIME DELAY CIRCUITS HAVING A DIFFERENT SELECTED TIME CONSTANT FOR APPLYING A CONTROL PULSE TO A RESPECTIVE GATE CONTROL CIRCUIT AT A DIFFERENT PREDETERMINED TIME AFTER THE START OF EACH SAID SWEEP WAVEFORM, AND EACH OF SAID GATES CONNECTING THE OUTPUT OF SAID DETECTOR TO THE RESPECTIVE AUDIO-FREQUENCY CHANNEL DURING THE APPLICATION OF SAID CONTROL PULSE TO THE GATE.