Carrier generator for suppressed-carrier single-sideband transmission

Claim 1

A SINGLE-SIDEBAND SUPPRESSED-CARRIER SYSTEM RECEIVING SINGLE-SIDEBAND SUPPRESSED-CARRIER SIGNALS OF HARMONICALLY RELATED AUDIO FREQUENCIES AND COMPRISING: A MIXER RECEIVING SAID SIGNALS, A LOCAL OSCILLATOR CONNECTED TO HETERODYNE SAID SIGNALS IN SAID MIXER TO DERIVE SINGLE-SIDEBAND SUPPRESSEDCARRIER INTERMEDIATE FREQUENCY ENERGY COMPOSED OF WAVES RETAINING THE HARMONIC RELATION, REACTANCE MEANS FOR CONTROLLING THE FREQUENCY OF SAID OSCILLATOR, AN OSCILLATOR OF CONSTANT FREQUENCY, DETECTING MEANS COUPLED TO SAID MIXER AND TO SAID CONSTANT FREQUENCY OSCILLATOR FOR DEMODULATING SAID SINGLE-SIDEBAND SUPPRESSED-CARRIER INTERMEDIATE FREQUENCY ENERGY, LIMITING MEANS COUPLED TO SAID MIXER FOR SMOOTHING AMPLITUDE VARIATIONS OF SAID SINGLE-BAND SUPPRESSEDCARRIER INTERMEDIATE ENERGY, MEANS FED BY SAID LIMITING MEANS FOR INTERMODULATING THE AMPLITUDE LIMITED WAVE TO PRODUCE AN ALTERNATING POTENTIAL VARYING AT THE CARRIER FREQUENCY OF SAID SINGLE-SIDEBAND SUPPRESSED-CARRIER INTERMEDIATE FREQUENCY ENERGY, AND AN AUTOMATIC FREQUENCY CONTROL MEANS HAVING THE FREQUENCY OF SAID CONSTANT FREQUENCY OSCILLATOR AS A REFERENCE FREQUENCY, SAID CONTROL MEANS INTERCONNECTING SAID INTERMODULATING MEANS AND SAID REACTANCE MEANS FOR GENERATING FROM SAID CARRIER FREQUENCY ENERGY A CORRECTIVE VOLTAGE WHICH SO ADJUSTS THE FREQUENCY OF SAID LOCAL OSCILLATOR THAT THE FREQUENCY OF THE SUPPRESSED-CARRIER OF SAID INTERMEDIATE FREQUENCY ENERGY IS MAINTAINED IN EQUALITY WITH SAID REFERENCE FREQUENCY.