Pulse-generator providing output-pulse width determined by pair of preselected voltage levels of ramp function signal

Claim 1

A PULSE-FORMING CIRCUIT COMPRISING AN INPUT SIGNAL TERMINAL ADAPTED TO RECEIVE A STEP INPUT SIGNAL, A RAMP FUNCTION GENERATOR, MEANS CONNECTING SAID INPUT TERMINAL TO SAID RAMP FUNCTION GENERATOR SO THAT THE LATTER WILL BE ACTIVATED TO PRODUCE A RAMP FUNCTION SIGNAL UPON THE APPLICATION OF A STEP INPUT SIGNAL, A PULSE GENERATOR CONNECTED TO THE OUTPUT OF SAID RAMP FUNCTION GENERATOR, SAID PULSE GENERATOR BEING ADAPTED TO PRODUCE AN OUTPUT PULSE OF A PREDETERMINED DURACTION DURING THE TIME THE OUTPUT OF SAID RAMP FUNCTION GENERATOR IS ACTIVE, GATING MEANS COUPLED BETWEEN THE OUTPUT OF SAID PULSE GENERATOR AND A SIGNAL OUTPUT TERMINAL, MEANS CONNECTING SAID INPUT SIGNAL TERMINAL TO SAID GATING MEANS TO ACTIVATE SAID GATING MEANS TO PASS THE OUTPUT OF SAID PULSE GENERATOR ONLY SO LONG AS THE INPUT STEP SIGNAL IS PRESENT AND MEANS CONNECTING SAID OUTPUT TERMINAL TO SAID RAMP FUNCTION GENERATOR TO SUSTAIN THE ACTIVATION OF THE LATTER WHEN SAID GATING MEANS IS ACTIVATED.