Color television picture display device having a flicker reduction circuit

Claim 1

A color television picture display device comprising an analog-to-digital converter for supplying, at a plurality of outputs, a digital signal representing at least a luminance signal, applied to an input thereof, of a color television signal combination to be displayed; an arrangement for converting the number of fields having a plurality of inputs coupled, respectively, to said plurality of outputs of said analog-to-digital converter, and a corresponding plurality of outputs; a digital-to-analog converter having a plurality of inputs coupled, respectively, to said plurality of outputs of said converting arrangement, and an output; and a display part coupled to the output of said digital-to-analog converter; characterized in that said color television picture display device further comprises a source for providing a binary signal combination; a first change-over switch having a control input, a first set of inputs coupled to a number of said plurality of outputs of said analog-to-digital converter, a second set of inputs coupled to a respective number of outputs of said source, and a set of outputs coupled to a respective number of said plurality of inputs of said converting arrangement; and a second change-over switch having a control input, a first set of inputs coupled to the output of said digital-to-analog converter, a second set of inputs coupled to a number of said plurality of outputs of said converting arrangement which correspond with said number of inputs thereof, and an output coupled to said display device, whereby, on application of respective switching signals to the control input of said first change-over switch and to the control input of said second change-over switch, the binary signal combination from said source is applied to said converting arrangement and the corresponding outputs from said converting arrangement are applied directly to said display part.