AbstractWhen the information of a color imaging system is efficiently stored or transmitted, it is desirable that the image information which is decomposed into three primaries is transformed for transmitting primaries and its signal is processed and transmitted so that it is compatible with the visual and channel properties. In color imaging systems (color TV's), R, G, B, primaries are transformed into a luminance signal and chrominance signal while allocating the bandwidth and the value of the transmission signal to them for broadcasting. In this paper, when the three primary signals to be transmitted consist of a luminance and two chrominance components, we propose a method to quantitatively deal with these transmission signal values, an experiment, and the results of observation. In addition, we describe the results of an examination of how to allocate signal values for multiplexing the primary signals based on the above observation. Also, we examine what property and performance the standard color TV signals possess for various transmission systems. The above discussion is effectively applicable to the selection of the transmission primaries or the form of the transmission system for new color imaging systems of the future.