Measuring-counting system for determining and control-circuit for continuously providing exact multiple of unknown frequency input

Claim 1

A FREQUENCY MULTIPLIER COMPRISING A VARIABLE FREQUENCY OSCILLATOR HAVING FIRST AND SECOND INPUT TERMINALS AND AN OUTPUT TERMINAL, MEANS RESPONSIVE TO AN INPUT SIGNAL HAVING A FREQUENCY TO BE MULTIPLIED AND CONNECTED TO SAID FIRST INPUT TERMINAL OF SAID OSCILLATOR TO RENDER SAID OSCILLATOR OPERATIVE IN RESPONSE THERETO, MEANS FOR RENDERING SAID OSCILLATOR INOPERATIVE AFTER A PREDETERMINED NUMBER OF PULSES HAVE BEEN GENERATED BY SAID OSCILLATOR, MEANS RESPONSIVE TO SAID OSCILLATOR BEING RENDERED INOPERATIVE AND TO A ZERO CROSSING AT THE END OF A FULL CYCLE OF SAID INPUT SIGNAL TO PRODUCE A CONTROL SIGNAL HAVING A VALUE DEPENDENT UPON THE TIME DIFFERENCE BETWEEN THE RENDERING OF SAID OSCILLATOR INOPERATIVE AND THE SUBSEQUENT ZERO CROSSING AT THE END OF SAID FULL CYCLE OF SAID INPUT SIGNAL AND CONNECTED TO SAID SECOND INPUT TERMINAL OF SAID OSCILLATOR, AND MEANS IN SAID OSCILLATOR RESPOONSIVE TO SAID CONTROL SIGNAL TO VARY THE FREQUENCY THEREIN TO A PREDETERMINED MULTIPLE FREQUENCY OF THE FREQUENCY TO BE MULTIPLIED.