Circuit arrangement in a color television receiver of the beam index type

Claim 1

A COLOR TELEVISION RECEIVER COMPRISING AN IMAGE REPRODUCING DEVICE HAVING A SCREEN AND ELECTRON GUN MEANS FOR DIRECTING A BEAM OF ELECTRONS TOWARD SAID SCREEN, SAID SCREEN COMPRISING A PLURALITY OF GROUPS OF PARALLEL PHOSPHOR STRIPES RESPONSIVE TO SID BEAM TO REPRODUCE COLOR INFORMATION, SAID GROUPS BEING SEPARATED BY INDEXING STRIPES EXTENDING PARALLEL TO SAID PHOSPHOR STRIPES, SAID INDEXING STRIPES BEING RESPONSIVE TO SAID BEAM TO PRODUCE AN INDEXING SIGNAL, MEANS FOR SCANNING SAID BEAM IN A DIRECTION NORMAL TO SAID STRIPES, FIRST GATE CIRCUIT MEANS, MEANS APPLYING SAID INDEXING SIGNALS TO SAID FIRST GATE CIRCUIT MEANS, A SOURCE OF A VIDEO SIGNAL, SECOND GATE CIRCUIT MEANS, MEANS APPLYING SAID VIDEO SIGNAL TO SAID SECOND GATE CIRCUIT MEANS, MEANS APPLYING THE OUTPUT OF SAID SECOND GATE CIRCUIT MEANS TO SAID ELECTRON GUN MEANS TO MODULATE SAID BEAM, MEANS FOR OPENING SAID FIRST AND SECOND GATE CIRCUIT MEANS COMPRISING MEANS PROVIDING GATE SIGNALS, MEANS APPLYING SAID GATGE SIGNALS TO SAID FIRST AND SECOND GATE CIRCUIT MEANS, AND MEANS CONNECTED TO THE OUTPUT OF SAID FIRST GATE CIRCUIT MEANS FOR CONTROLLING THE FREQUENCY OF SAID GATE SIGNALS, THE FREQUENCY OF SAID GATE SIGNALS BEING INTEGRALLY RELATED TO AND NO GREATER THAN THE RATE AT WHICH SAID BEAM SCANS SUCCESSIVE SAID INDEXING STRIPES.