Transistor camera circuitry

Claim 1

IN A TELEVISION SYSTEM, A CATHODE RAY TUBE INCLUDING A SCREEN, ELECTRODES FOR IMPINGING A CATHODE RAY BEAM ON SAID SCREEN AND DEFLECTION MEANS FOR CAUSING SAID BEAM TO SCAN SAID SCREEN, A BLOCKING OSCILLATOR COMPRISING A PRIMARY COIL AND A TRANSISTOR ARRANGED TO PERODICALLY CONDUCT A LARGE CURRENT PULSE THROUGH SAID COIL, A SECONDARY COIL INDUCTIVELY COUPLED TO SAID PRIMARY COIL AND HAVING A HIGH RATIO OF TURNS TO SAID PRIMARY COIL TO PERIODICALLY DEVELOP HIGH VOLTAGE PULSES IN RESPONSE TO SAID HIGH CURRENT PULSES, SWEEP CAPACITOR MEANS, RECTIFIER MEANS FOR APPLYING SAID HIGH VOLTAGE PULSES TO SAID SWEEP CAPACITOR MEANS, RESISTANCE MEANS CONNECTED TO SAID CAPACITOR MEANS TO GRADUALLY REDUCE THE VOLTAGE ACROSS SAID CAPACITOR MEANS BETWEEN SAID HIGH VOLTAGE PULSES, THEREBY TO DEVELOP A VOLTAGE OF SAW-TOOTH FORM, MEANS FOR APPLYING SAID VOLTAGE OF SAW-TOOTH FORM TO SAID DEFLECTION MEANS, AND MEANS COUPLING SAID BLOCKING OSCILLATOR TO ONE OF SAID ELECTRODES TO APPLY A BLANKING SIGNAL UPON CONDUCTION OF SAID TRANSISTOR.