Some aspects of V.S.B. transmission of colour television with envelope detection

The assessment of the merits of a colour television system in fulfilling the principle of constant luminance must take into account the errors that can result from the use of a vestigial-sideband emission with envelope detection. Comparison is made between the N.T.S.C. system and the modified form of this proposed by James and Karwowski. As regards the reproduction of colour in large areas, the N.T.S.C. system is in some respects superior to the James and Karwowski system.