Means for converting an input signal to a representative voltage

Claim 1

A DEMODULATOR CIRCUIT FOR CONVERTING A FREQUENCY MODULATED INPUT SIGNAL TO A REPRESENTATIVE VOLTAGE THECOMBINATION COMPRISING: PULSE GENERATOR MEANS FOR GENERATING A SERIES OF SIMULTANEOUS POSITIVE AND NEGATIVE PULSES IN PROPORTION TO THE FREQUENCY OF SAID INPUT SIGNAL; FUNCTION GENERATOR MEANS CONNECTED TO SAID PULSE GENERATOR MEANS FOR GENERATING AN APPROXIMATE HYPERBOLIC OUTPUT SIGNAL IN RESPONSE TO THE POSITIVE PULSES OF THE PULSE GENERATOR MEANS; SAID APPROXIMATE HYPERBOLIC OUTPUT SIGNAL INSTIGATED PERIODICALLY BY THE PULSES FROM SAID PULSE GENERATOR MEANS; GATED AMPLIFIER MEANS CONNECTED TO SAID FUNCTION GENERATOR MEANS AND TO SAID PULSE GENERATOR MEANS FOR SAMPLING SAID APPROXIMATE HYPERBOLIC OUTPUT SIGNAL OF SAID FUNCTION GENERATOR MEANS IN RESPONSE TO THE POSITIVE AND NEGATIVE PULSES FROM SAID PULSE GENERATOR MEANS;