Pulse forming circuit for horizontal deflection output transistor

Claim 1

IN A HORIZONTAL DEFLECTION CIRCUIT FOR A TRANSISTORIZED TELEVISION RECEIVER HAVING AN OUTPUT TRANSISTOR RESPONSIVE TO AN APPLIED VOLTAGE WAVEFORM IN EXCESS OF A PREDETERMINED CUT-OFF AMPLITUDE FOR PASSING FROM A CONDUCTIVE TO A NON-CONDUCTIVE STATE AND ADAPTED TO BE CONNECTED TO THE HORIZONTAL ELECTROMAGNETIC DEFLECTION MEANS OF THE KINESCOPE IN THE TELEVISION RECEIVER FOR DEVELOPING SUBSTANTIALLY SAWTOOTH SHAPED OUTPUT CURRENTS UPON BEING RENDERED ALTERNATELY CONDUCTIVE AND NONCONDUCTIVE BY SHAPED PULSES APPLIED TO SAID OUTPUT TRANSISTOR, THE PULSE SHAPING BEING SUCH THAT THE LEADING EDGE OF EACH OF SAID SHAPED PULSES HAS AN AMPLITUDE SUBSTANTIALLY HIGHER THAN THE CUT-OFF VOLTAGE FOR SAID OUTPUT TRANSISTOR AND THE TRAILING EDGE AMPLITUDE OF EACH OF SAID SHAPED PULSES IS HIGHER THAN SAID CUT-OFF VOLTAGE AND SUBSTANTIALLY LOWER THAN SAID LEADING EDGE AMPLITUDE, MEANS FOR GENERATING SAID SHAPED PULSES COMPRISING: A BLOCKING OSCILLATOR TRANSISTOR; A BLOCKING OSCILLATOR TRANSFORMER CONNECTED IN CIRCUIT WITH SAID BLOCKING OSCILLATOR TRANSISTOR AND HAVING A PLURALITY OF WINDINGS; AND BILATERALLY CONDUCTIVE IMPEDANCE MEANS ARRANGED IN SERIES WITH ONE OF SAID WINDINGS OF SAID BLOCKING OSCILLATOR TRANSFORMER TO EFFECT SAID PULSE SHAPING.