ES423465A1 - Color television receiver. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Color television receiver that operates according to the secam system and includes a fixing level insertion circuit, one of whose inputs is coupled, while retaining the dc component, to an output of a difference signal demodulator color by means of at least one correction network, input to which a switch is coupled which, during line returns, inserts a level of fixation into the color difference signal, corrected by said correction network, characterized by that on the other side, the switch is coupled, while retaining the dc component, to a capacitor with a memory function that, by means of a second switch, is coupled in turn, always preserving the dc component, at an output of the fixing level correction circuit to which said input is also coupled, while the switches are coupled to a signal generator. Control signal, so that at the end of a period of line suppression, the aforementioned switch loads said capacitor to the level that, at that instant, exists in the color difference signal, while at the beginning of the period of next line suppression and until the instant in which the capacitor is again charged by means of said first mentioned switch, the capacitor in question transmits to the output, by means of the second switch, the voltage that exists at the ends of capacitor at the end of the preceding line suppression period, and that during intermediate line advances or advances, the color difference signal, applied at the input, is supplied at the output. (Machine-translation by Google Translate, not legally binding)