Short pulse eliminator discriminator utilizing feed-back to effect desired output pulses

Claim 1

A SHORT PULSE ELIMINATOR CIRCUIT FOR PREVENTING TRANSMISSION OF VIDEO PULSES OF SHORTER THAN A MINIMUM DESIRED DURATION, COMPRISING A DELAY LINE REQUIRING A TIME EQUAL TO THE MINIMUM DESIRED DURATION OF SAID PULSES FOR A PULSE APPLIED AT THE INPUT THEREOF TO BE PROPAGATED ITS LENGTH, AN "AND" GATE INCLUDING A PAIR OF DIODES BIASED FOR NORMAL CONDUCTION, MEANS APPLYING THE OUTPUT OF SAID DELAY LINE TO ONE OF THE DIODES OF SAID GATE, AN AMPLIFIER ARRANGED TO PROVIDE AN OUTPUT OF THE SAME PHASE AS AN INPUT THERETO, MEANS APPLYING THE OUTPUT OF SAID AMPLIFIER TO THE OTHER DIODE OF SAID GATE, MEANS SIMULTANEOUSLY APPLYING A VIDEO PULSE TO THE INPUT OF SAID DELAY AND TO THE INPUT OF SAID AMPLIFIER, SAID PULSE BEING OF SUCH POLARITY AS TO RENDER THE DIODES OF SAID GATE NON-CONDUCTIVE UPON APPLICATION THERETO, MEANS FEEDING BACK TO THE INPUT OF SAID AMPLIFIER A PORTION OF THE OUTPUT OF SAID GATE, AND MEANS IN SAID FEED-BACK MEANS FOR BLOCKING TRANSMISSION BY SAID FEED-BACK MEANS OF SPURIOUS OUTPUTS FROM SAID GATE RESULTING FROM THE NON-CONDUCTION OF ONLY ONE OF SAID DIODES.