Electrical pulse width discriminators

Claim 1

AN ELECTRICAL PULSE WIDTH DISCRIMINATOR, COMPRISING A SWITCHING CIRCUIT, MEANS FOR FEEDING AN INPUT PULSE TO THE SWITCHING CIRCUIT, MEANS WITHIN THE SWITCHING CIRCUIT CONTROLLED BY THE SAID PULSE FOR PROVIDING RESPECTIVELY AT TWO OUTPUT POINTS FIRST AND SECOND OUTPUT PULSES OF OPPOSITE POLARITY EACH OF WIDTH EQUAL TO THAT OF THE INPUT PULSE, A MONOSTABLE CIRCUIT HAVING AN UNSTABLE CONDITION INTO WHICH THE CIRCUIT CAN BE TRIGGERED AND INCORPORATING TIME DELAY MEANS WHEREBY THE UNSTABLE CONDITION IS MAINTAINED FOR A PREDETERMINED PERIOD BEFORE THE CIRCUIT NATURALLY REVERTS TO ITS STABLE CONDITION THEREBY PROVIDING AT AN OUTPUT POINT OF THE CIRCUIT A PULSE OF PREDETERMINED WIDTH, TWO GATING CIRCUIT THROUGH WHICH THE TWO OUTPUT PULSES FROM THE SWITCHING CIRCUIT ARE RESPECTIVELY FED TO DIFFERENT POINTS OF THE MONOSTABLE CIRCUIT, MEANS WHEREBY THE TRIGGERING OF THE MONOSTABLE CIRCUIT IS EFFECTED BY THE FIRST OF SUCH OUTPUT PULSES IN SYNCHRONISM WITH THE LEADING EDGE THEREOF, MEANS WHEREBY WHEN THE DURATION OF EACH OF SUCH OUTPUT PULSES IS SHORTER THAN THE TIME DELAY OF THE MONOSTABLE CIRCUIT SUCH CIRCUIT IS CAUSED BY THE SECOND OF SUCH OUTPUT PULSES TO REVERT PREMATURELY TO ITS STABLE CONDITION IN SYNCHRONISM WITH THE TRAILING EDGE OF SUCH SECOND OUTPUT PULSE, AN OUTPUT GATE CIRCUIT OF THE KIND WHICH WHEN FED AT TWO INPUT POINTS RESPECTIVELY WITH A FIRST INPUT SIGNAL AND WITH A SECOND INPUT SIGNAL PROVIDES AN OUTPUT SIGNAL ONLY WHEN THE DURATION OF THE FIRST INPUT SIGNAL EXCEEDS THAT OF THE SECOND INPUT SIGNAL, CONNECTING MEANS FOR FEEDING ONE OF THE TWO OUTPUT PULSES FROM THE SWITCHING CIRCUIT TO THE OUTPUT GATE CIRCUIT TO CONSTITUTE THE FIRST INPUT SIGNAL THERETO, AND CONNECTING MEANS FOR FEEDING THE OUTPUT PULSE OF PREDETERMINED WIDTH FROM THE MONOSTABLE CIRCUIT TO THE OUTPUT GATE CIRCUIT TO CONSTITUTE THE SECOND INPUT SIGNAL THERETO.