Frequency stabilized sweep frequency generator

Claim 1

A STABILIZED SIGNAL GENERATOR RESPONSIVE TO AN APPLIED INPUT SIGNAL COMPRISING: MEANS FOR GENERATING AN OUTPUT SIGNAL HAVING A FREQUENCY WHICH VARIES AS A FUNCTION OF THE MAGNITUDE OF A CONTROL SIGNED APPLIED TO ITS INPUT, DISCRIMINATOR MEANS FOR DEVELOPING A FIRST SIGNAL PROPORTIONATE TO THE FREQUENCY OF AN APPLIED SIGNAL, A REFERENCE OSCILLATOR, MEANS FOR APPLYING SAID OUTPUT SIGNAL TO SAID DISCRIMINATOR MEANS AND PERIODICALLY SUBSTITUTING A SIGNAL FROM SAID REFERENCE OSICLLATOR, MEANS FOR DEVELOPING SIMULTANEOUSLY WITH THE SUBSTITUTION OF A REFERENCE SIGNAL FROM SAID OSCILLATOR, AN ERROR SIGNAL SEPARATE AND DISTINCT FROM SAID FIRST SIGNAL PROPORTIONATE SEPARATE AND DISTINCT FROM SAID FIRST ALGEBRAIC SUMMATION OF SAID INPUT SIGNAL, SAID CONTROL SIGNAL AND SAID FIRST SIGNAL FROM THE MAGNITUDE OF A SIGNAL DEVELOPED BY SAID DISCRIMINATOR MEANS, AND SUMMING MEANS RESPONSIVE TO SAID INPUT, SAID FIRST AND SAID ERROR SIGNAL FOR DEVELOPING SAID CONTROL SIGNAL.