JPS5621491A - Time division color television signal transmission system - Google Patents

Abstract

PURPOSE:To realize a time division color television signal transmission system where brightness and hue of the screen is not fluctuated, by transmitting amplitude representative values of the synchronizing signal in the color television signal and a color burst flag at a fixed interval. CONSTITUTION:Luminance signal Y and chromaticity signals C1 and C2 from terminals 11-13 are not only multiplexed by multiplexing circuit 10 but also input to horizontal synchronizing signal representative value extracting circuit 20 and color burst flag representative value extracting circits 30 and 40. Outputs of these extracting circuits 20-40 are multiplexed together with the output of multiplexing circuit 10 by multiplexing circuit 50, and the result is transmitted. Representative value separating circuit 60 of the receiving part separates representative values above from one another to give various representative values to memories 70-80 and applies the multiplexed television signal to luminance.chromaticity separating circuit 100. Synchronizing signal adding circuit 110 and color burst adding circuits 120 and 130 reproduce prescribed-level luminance signal and chromaticity signal on a basis of signals Y, C1 and C2 from separating circuit 100 and representative values of memories 70-90.