Gated crystal oscillator

Claim 1

A GATED OSCILLATOR APPARATUS COMPRISING FIRST AND SECOND INPUT TERMINALS RESPONSIVE TO FIRST AND SECOND BILEVEL GATING SIGNALS, RESPECTIVELY, EACH OF SAID FIRST AND SECOND GATING SIGNALS DEFINING A COMMON INTERVAL; MEANS COUPLED TO SAID FIRST INPUT TERMINAL FOR DIFFERENTIATING SAID FIRST GATING SIGNAL THEREBY TO PRODUCE FIRST AND SECOND TRIGGER PULSES OF OPPOSITE POLARITY; A BLOCKING OSCILLATOR RESPONSIVE TO SAID FIRST TRIGGER PULSE FOR GENERATING A PULSE OF PREDETERMINED DURATION; A BRIDGE NETWORK INCLUDING A CRYSTAL CAPABLE OF BEING SHOCKED INTO OSCILLATION AT A FREQUENCY HAVING A PERIOD EQUAL TO SUBSTANTIALLY FOUR TIMES SAID PREDETERMINED DURATION; A RESONANT TRANSFORMER COUPLED TO SAID BRIDGE NETWORK AND RESPONSIVE TO SAID PULSE OF PREDETERMINED DURATION FOR SHOCKING SAID CRYSTAL INTO OSCILLATION IN RESPONSE THERETO THEREBY TO PROVIDE CONTROL OSCILLATIONS; MEANS INCLUDING A TRANSISTOR AMPLIFIER STAGE RESPONSIVE TO SAID CONTROL OSCILLATIONS AND HAVING AN OUTPUT COUPLED BACK TO SAID CRYSTAL FOR APPLYING A REGENERATIVE FEEDBACK SIGNAL THERETO, SAID CONTROL OSCILLATIONS BEING OF SUFFICIENT MAGNITUDE TO SATURATE SAID TRANSISTOR AMPLIFIER STAGE WHEREBY SAID REGENERATIVE FEEDBACK SIGNAL HAS A SUBSTANTIALLY CONSTANT AMPLITUDE; AND MEANS HAVING AN INPUT COUPLED TO SAID SECOND INPUT TERMINAL AND BEING RESPONSIVE TO SAID CONTROL OSCILLATIONS AND HAVING AN OUTPUT COUPLED ACROSS SAID RESONANT TRANSFORMER FOR DEVELOPING A DEGENERATIVE FEEDBACK SIGNAL THEREACROSS AT THE TERMINATION OF SAID COMMON INTERVAL.