Compensated beam deflection system

Claim 1

A DEFLECTION SYSTEM FOR DEVELOPING A SAWTOOTH DEFLECTION SIGNAL FOR A CATHODE RAY TUBE IN RESPONSE T A SYNCHRONIZATION SIGNAL, SAID SYSTEM INCLUDING IN COMBINATION, A SOURCE OF SYNCHRONIZING SIGNALS, A DEFLECTION STAGE INCLUDING A TRANSISTOR HAVING INPUT, OUTPUT, AND COMMON ELECTRODES, A RESISTOR-CAPACITOR NETWORK COUPLED TO SAID SOURCE OF SYNCHRONIZING SIGNALS AND SAID INPUT ELECTRODE FOR APPLYING A SAWTOOTH WAVE SIGNAL TO SAID INPUT ELECTRODE OF SAID TRANSISTOR, OUTPUT CIRCUIT MEANS COUPLED TO SAID OUTPUT ELECTRODE FOR DEVELOPING A SAWTOOTH WAVE SIGNAL FOR THE CATHODE RAY TUBE, AND FEEDBACK MEANS FORMING A LINEARITY CORRECTION NETWORK INCLUDING FIRST AND SECOND FEEDBACK LOOPS, SAID FIRST FEEDBACK LOOP INCLUDING MEANS FOR COUPLING A SIGNAL AT THE FREQUENCY OF THE SAWTOOTH SIGNAL AND IN PHASE THEREWITH TO SAID INPUT ELECTRODE FROM SAID OUTPUT ELECTRODE TO PEAK THE END PORTION OF THE SAWTOUTH WAVE SIGNAL, SAID SECOND FEEDBACK LOOP INLUDING MEANS FOR COUPLING A FURTHER SIGNAL TO SAID INPUT ELECTRODE FROM SAID COMMON ELECTRODE TO PROVIDE FURTHER LINEARITY CORRECTION FOR THE SAWTOOTH WAVE SIGNAL.