Stabilized signal generator

Claim 1

A FREQUENCY STABILIZED SIGNAL GENERATING SYSTEM FOR PRODUCING FREQUENCY MODULATED OSCILLATIONS INCLUDING IN COMBINATION, FIRST OSCILLATOR MEANS FOR GENERATING A WAVE SIGNAL, INCLUDING, MEANS FOR SUPPLYING A MODULATING SIGNAL THERETO, SECOND OSCILLATOR MEANS FOR GENERATING A STABLE REFERENCE FREQUENCY, FREQUENCY DETECTION MEANS, GATING MEANS FOR RESPECTIVELY COUPLING SIGNALS REPRESENTATIVE OF THE OUTPUT OF SAID FIRST AND SECOND OSCILLATOR MEANS TO SAID FREQUENCY DETECTION MEANS, MEANS FOR ACTIVATING SAID GATING MEANS ON A TIME SHARED BASIS SO THAT SAID FREQUENCY DETECTION MEANS PROVIDES AN OUTPUT SIGNAL ALTERNATELY INDICATIVE OF THE FREQUENCY OF SAID FIRST AND SECOND OSCILLATOR MEANS, SIGNAL COMBINING MEANS COUPLED TO THE OUTPUT OF SAID FREQUENCY DETECTION MEANS, DEGENERATIVE FEEDBACK CIRCUIT MEANS FOR COUPLING A PORTION OF SAID MODULATING SIGNAL TO SAID SIGNAL COMBINING MEANS, MEANS FOR SYNCHRONOUSLY ACTIVATING SAID DEGENERATIVE FEEDBACK CIRCUIT MEANS WITH SAID GATING MEANS TO THEREBY PRODUCE CANCELLATION OF MODULATION COMPONENTS APPEARING IN THE OUTPUT OF SAID FREQUENCY DETECTION MEANS DURING INTERVALS THAT THE OUTPUT OF SAID FIRST OSCILLATOR MEANS IS DETECTED, MEANS COUPLED TO SAID SIGNAL COMBINING MEANS TO PROVIDE A CONTROL SIGNAL INDICATIVE OF THE CENTER FREQUENCY SHIFT OF SAID FIRST OSCILLATOR MEANS WITH RESPECT TO THE FREQUENCY OF SAID SECOND OSCILLATOR MEANS, AND MEANS COUPLING SAID CONTROL SIGNAL TO SAID FIRST OSCILLATOR MEANS TO CORRECT THE CENTER FREQUENCY THEREOF IN RESPONSE TO SAID CONTROL SIGNAL.