Raster size control with constant aspect ratio

Claim 1

IN A CIRCUIT ARRANGEMENT FOR STEPLESSLY REGULATING THE AMPLITUDES IN THE HORIZONTAL AND VERTICAL DEFLECTION CIRCUIT OF A TELEVISION RECEIVER COMPRISING A HORIZONTAL SAWTOOTH SCAN GENERATOR FOR PROVIDING A HIGH VOLTAGE FOR THE PICTURE TUBE AND MEANS FOR REGAINING THE REACTIVE POWER REQUIRED FOR THE BEAM DEFLECTION THROUGH A LINEARIZING DIODE AS A BIAS VOLTAGE FOR SAID DIODE, AS A DRIVING VOLTAGE FOR THE HORIZONTAL SAWTOOTH GENERATOR AND AS CHARGING VOLTAGE FOR THE VERTICAL DEFLECTION SAWTOOTH GENERATOR, IN COMBINATION, A HORIZONTAL SCAN SAWTOOTH CURRENT OUTPUT TRANSFORMER HAVING A PLURALITY OF WINDINGS CONNECTED IN THE HORIZONTAL DEFLECTION CIRCUIT OF SAID TELEVISION RECEIVER, VARIABLE INDUCTANCE MEANS CONNECTED IN PARALLEL WITH ONE WINDING OF THE HORIZONTAL SCAN SAWTOOTH CURRENT OUTPUT TRANSFORMER, SAID VARIABLE INDUCTANCE MEANS INCLUDING VARYING MEANS FOR PROVIDING VARIATION OF THE INDUCTANCE OF SAID VARIABLE INDUCTANCE MEANS BETWEEN TWO EXTREME CONDITIONS, AND TIME CONSTANT CIRCUIT COMPONENTS CONNECTED IN SAID HORIZONTAL DEFLECTION CIRCUIT HAVING VALUES SELECTED TO PROVIDE THE SAME MAGNETIC ENERGY OF THE INDUCTANCE OF SAID OUTPUT TRANSFORMER AT THE TWO EXTREME CONDITIONS OF SAID VARIABLE INDUCTANCE MEANS SO THAT WITH CONSTANT HIGH VOLTAGE AND PICTURE FOCUS THE HORIZONTAL SWEEP AMPLITUDE AND THE VERTICAL DEFLECTION AMPLITUDE ARE REGULATED SIMULTANEOUSLY IN FIXED PROPORTION AND BY VARIATION OF ONLY SAID ONE VARIABLE INDUCTANCE.