Abstract: The full range of available steps provided by n-bit samples is utilized to digitalize television line picture signals of a composite video signal. The synchronizing signals in the blanking intervals which separate the picture signals of successive television lines are confined to the same range of multibit word values as the television line picture signals. This reduces quantization noise in the picture signals. The necessary processing may precede digitalization and be performed by superposing a d.c. voltage in the blanking intervals of a standard composite television signal so as to shift the voltage range of the synchronizing signals and bring them within the voltage range of the picture signals, or it may be performed after digitalization by interposing a digital synchronizing signal, obtained from a store, having a same multibit word value range as the digitalized picture signals, into the blanking intervals.

Abstract: Digitalized luminance and color difference signals, the former sampled at twice the sampling frequency of the latter, are interleaved into two data streams (k, m) in each of which a sample of the luminance signal separates samples of different color television signals, one of these streams then being delayed by one period, so the two data streams will simultaneously present successive samples of the same signal component (luminance or color difference). A system of transfer switches and two pairs of 1-kilobyte (one line) stores then makes possible the sequencing, at twice the sampling rate of the luminance component, of all the luminance signal bytes of a television line followed by all of the bytes for that line of one color difference component and finally all of the bytes for that line of the other color television component, with the desired ratio of component segment length in each line, as a time-multiplex color television signal.