Sequential to simultaneous conversion system

Abstract

Apparatus for converting line sequential color signals to simultaneously presented color signals for display by a shadow mask picture tube. Three ring counters generate square wave gating signals which are applied to three gates corresponding to the three colors being displayed. Two of the sequential color signals are applied through delay circuits before gating to enable a simultaneous presentation.

What I claim is: 
     
       1. In a color television receiver having a shadow-mask color picture tube for reproducing simultaneously applied color signals from line-sequential recorded image signals, the combination comprising a video amplifier for amplifying a line-sequential color television signal, a first delay circuit connected to the output of said video amplifier and for delaying the output signals thereof by one horizontal scanning period, a second delay circuit connected to the output of said first delay circuit and for delaying the output signals to said video amplifier by two horizontal scanning periods, three ring counters for generating by turns a square wave having a pulse width of one horizontal scanning period in each three horizontal scanning period with said square wave being produced in each different horizontal scanning period of three horizontal scanning periods, gate circuits for red signals connected to each output of said video amplifier and of said delay circuits and for passing the continued red signals from said each output in each three horizontal scanning period by means of the output signals of said three ring counters, gate circuits for blue signals connected to each output of said video amplifier and of said delay circuits and for passing the continued blue signals from each output in each three horizontal scanning period by means of the output signals of said three ring counters, gate circuits for green signals connected to each output of said video amplifier and of said delay circuits and for passing the continued green signals from said each output in each signals of said three ring counters, and amplifiers for amplifying the respective outputs of said each gate circuit to a level sufficient to reproduce a color image on said color picture tube. 
     
     
       2. In a color television receiver having a shadow-mask color picture tube for reproducing simultaneously applied color signals from line-sequential recorded image signals, the combination comprising a video amplifier for amplifying a line-sequential color television signal, a first delay circuit connected to the output of said video amplifier and for delaying the output signals thereof by one horizontal scanning period, a second delay circuit connected to the output of said first delay circuit and for delaying the output signals of said video amplifier by one horizontal scanning periods, two ring counters for generating a square wave having a pulse width of one horizontal scanning period in each different horizontal scanning period with said square wave being produced in each different horizontal scanning period of three horizontal scanning periods, gate circuits for red signals connected to each output of said video amplifier and of said circuits and for passing the red signals from said each output in each horizontal scanning period by means of the output signals of said two ring counters, said red signals being blanked off in one horizontal scanning period corresponding to a blanking portion of said square wave, gate circuits for blue signals connected to each output of said video amplifier and of said delay circuits and for passing the blue signals from said each output in each horizontal scanning period by means of the output signals of said two ring counters, said blue signals being blanked off in one horizontal scanning period corresponding to a blanking portion of said square wave, gate circuits for green signals connected to each output of said video amplifier and of said delay circuits and for passing the green signals from said each output in each horizontal scanning period by means of the output signals of said two ring counters, said green signals being blanked off in one horizontal scanning period corresponding to a blanking portion of said square wave, and amplifiers for amplifying the respective outputs of each gate circuit to a level sufficient to reproduce a color image of said color picture tube.