Retrace insertion system

Claim 2

APPARATUS FOR USE WITH A CATHODE RAY TUBE INDICATOR PROVIDED WITH A BEAM DEFLECTION CONTROL MEANS AND A BEAM INTENSITY CONTROL MEANS COMPRISING: A GATE GENERATOR PROVIDING A GATE SIGNAL, A FIRST TERMINAL COUPLED TO SAID GATE GENERATOR; TRIGGER GENERATING MEANS COUPLED TO SAID FIRST TERMINAL OPERABLE TO GENERATE A PULSE UPON TERMINATION OF THE GATE SIGNAL; FIRST PULSE GENERATING MEANS COUPLED TO SAID TRIGGER GENERATING MEANS OPERABLE TO GENERATE A FIRST SQUARE WAVE OF SELECTED DURATION INITIATING WITH THE GENERATION OF SAID TRIGGER PULSE; SECOND PULSE GENERATING MEANS COUPLED TO SAID FIRST PULSE GENERATING MEANS OPERABLE TO GENERATE A SECOND SQUARE WAVE OF SELECTED DURATION INITIATING UPON TERMINATION OF SAID FIRST SQUARE WAVE; A SECOND TERMINAL COUPLED TO SAID SECOND PULSE GENERATING MEANS AND COUPLED TO SAID BEAM INTENSITY CONTROL MEANS; THIRD PULSE GENERATING MEANS COUPLED TO SAID TRIGGER GENERATING MEANS AND TO SAID SECOND PULSE GENERATING MEANS OPERABLE TO GENERATE A THIRD SQUARE WAVE INITIATING WITH THE GENERATION OF SAID TRIGGER PULSE AND TERMINATING WITH THE TERMINATION OF SAID SECOND SQUARE WAVE; THIRD TERMINAL MEANS COUPLED TO SAID THIRD PULSE GENERATING MEANS AND COUPLED TO SAID BEAM DEFLECTION CONTROL MEANS.

Claim 3

IN A RADAR INDICATING SYSTEM INCLUDING A GATE GENERATOR AND A CATHODE RAY TUBE INDICATOR COUPLED THROUGH A BEAM INTENSITY CONTROL MEANS TO SAID GATE GENERATOR AND HAVING A BEAM DEFLECTION SYSTEM COUPLED TO A BEAM DEFLECTION CONTROL MEANS, THE APPARATUS IMPROVEMENT WHICH COMPRISES: A FIRST TERMINAL COUPLED TO SAID GATE GENERATOR; TRIGGER GENERATING MEANS COUPLED TO SAID FIRST TERMINAL OPERABLE TO GENERATE A PULSE UPON TERMINATION OF THE GATE SIGNAL; FIRST PULSE GENERATING MEANS COUPLED TO SAID TRIGGER GENERATING MEANS OPERABLE TO GENERATE A FIRST SQUARE WAVE OF SELECTED DURATION INITIATING WITH THE GENERATION OF SAID TRIGGER PULSE; SECOND PULSE GENERATING MEANS COUPLED TO SAID FIRST PULSE GENERATING MEANS OPERABLE TO GENERATE A SECOND SQUARE WAVE OF SELECTED DURATION INITIATING UPON TERMINATION OF SAID FIRST SQUARE WAVE; A SECOND TERMINAL COUPLED TO SAID SECOND PULSE GENERATING MEANS AND COUPLED TO SAID BEAM INTENSITY CONTROL MEANS; THIRD PULSE GENERATING MEANS COUPLED TO SAID TRIGGER GENERATING MEANS AND TO SAID SECOND PULSE GENERATING MEANS OPERABLE TO GENERATE A THIRD SQUARE WAVE INITIATING WITH THE GENERATION OF SAID TRIGGER PULSE AND TERMINATING WITH THE TERMINATION OF SAID SECOND SQUARE WAVE; A THIRD TERMINAL COUPLED TO SAID THIRD PULSE GENERATING MEANS AND COUPLED TO SAID BEAM DEFLECTION CONTROL MEANS; A FOURTH TERMINAL COUPLED TO SAID THIRD PULSE GENERATING MEANS; A SINE WAVE OSCILLATOR INCLUDING A TRIODE AND A TUNED OSCILLATORY CIRCUIT COUPLED IN SERIES WITH A CATHODE RESISTOR BETWEEN THE CATHODE OF SAID TRIODE AND A POINT OF REFERENCE POTENTIAL; CIRCUIT MEANS COUPLING THE GRID OF SAID TRIODE TO SAID FOURTH TERMINAL; A FIFTH TERMINAL; CIRCUIT MEANS COUPLING SAID FIFTH TERMINAL TO SAID TUNED CIRCUIT; SIXTH AND SEVENTH TERMINALS COUPLED TO THE DEFLECTION SYSTEM OF SAID CATHODE RAY TUBE; FIRST PHASE SHIFTING MEANS COMPRISING A RESISTOR CONNECTED BETWEEN SAID FIFTH AND SIXTH TERMINALS AND A CAPACITOR CONNECTED BETWEEN SAID SIXTH TERMINAL AND SAID POINT OF REFERENCE POTENTIAL; SECOND PHASE SHIFTING MEANS COMPRISING A CAPACITOR CONNECTED BETWEEN SAID FIFTH AND SEVENTH TERMINALS AND A RESISTOR CONNECTED BETWEEN SAID SEVENTH TERMINAL AND SAID POINT OF REFERENCE POTENTIAL; AND MEANS TO DISABLE SAID OSCILLATOR.

Claim 4

IN A RADAR INDICATING SYSTEM INCLUDING A GATE GENERATOR AND A CATHODE RAY TUBE INDICATOR COUPLED THROUGH A BEAM INTENSITY CONTROL MEANS TO SAID GATE GENERATOR AND HAVING A BEAM DEFLECTION SYSTEM COUPLED TO A BEAM DEFLECTION CONTROL MEANS, THE APPARATUS IMPROVEMENT WHICH COMPRISES: A FIRST TERMINAL COUPLED TO SAID GATE GENERATOR; TRIGGER GENERATING MEANS COUPLED TO SAID FIRST TERMINAL OPERABLE TO GENERATE A PULSE UPON TERMINATION OF THE GATE SIGNAL; FIRST PULSE GENERATING MEANS COUPLED TO SAID TRIGGER GENERATING MEANS OPERABLE TO GENERATE A FIRST SQUARE WAVE OF SELECTED DURATION INITIATING WITH THE GENERATION OF SAID TRIGGER PULSE; SECOND PULSE GENERATING MEANS COUPLED TO SAID FIRST PULSE GENERATING MEANS OPERABLE TO GENERATE A SECOND SQUARE WAVE OF SELECTED DURATION INITIATING UPON TERMINATION OF SAID FIRST SQUARE WAVE; A SECOND TERMINAL COUPLED TO SAID SECOND PULSE GENERATING MEANS AND COUPLED TO SAID BEAM INTENSITY CONTROL MEANS; THIRD PULSE GENERATING MEANS COUPLED TO SAID TRIGGER GENERATING MEANS AND TO SAID SECOND PULSE GENERATING MEANS OPERABLE TO GENERATE A THIRD SQUARE WAVE INITIATING WITH THE GENERATION OF SAID TRIGGER PULSE AND TERMINATING WITH THE TERMINATION OF SAID SECOND SQUARE WAVE; A THIRD TERMINAL COUPLED TO SAID THIRD PULSE GENERATING MEANS AND COUPLED TO SAID BEAM DEFLECTION CONTROL MEANS; A FOURTH TERMINAL COUPLED TO SAID THIRD PULSE GENERATING MEANS; A SINE WAVE OSCILLATOR INCLUDING A TRIODE AND A TUNED OSCILLATORY CIRCUIT COUPLED IN SERIES WITH A CATHODE RESISTOR BETWEEN THE CATHODE OF SAID TRIODE AND A POINT OF REFERENCE POTENTIAL; CIRCUIT MEANS COUPLING THE GRID OF SAID TRIODE TO SAID FOURTH TERMINAL; A FIFTH TERMINAL; CIRCUIT MEANS COUPLING SAID FIFTH TERMINAL TO SAID TUNED CIRCUIT; SIXTH AND SEVENTH TERMINALS COUPLED TO THE DEFLECTION SYSTEM OF SAID CATHODE RAY TUBE; FIRST PHASE SHIFTING MEANS COMPRISING A RESISTOR CONNECTED BETWEEN SAID FIFTH AND SIXTH TERMINALS AND A CAPACITOR CONNECTED BETWEEN SAID SIXTH TERMINAL AND SAID POINT OF REFERENCE POTENTIAL; SECOND PHASE SHIFTING MEANS COMPRISING A CAPACITOR CONNECTED BETWEEN SAID FIFTH AND SEVENTH TERMINALS AND A RESISTOR CONNECTED BETWEEN SAID SEVENTH TERMINAL AND SAID POINT OF REFERENCE POTENTIAL; AND MEANS TO DISABLE SAID OSCILLATOR.