A Versatile Approach to the Measurement of Amplitude Distortion in Color Television

The reasons for making gamma corrections are briefly reviewed. The need for maintaining linearity throughout the transmission system is emphasized. An instrument is described which enables the user to more conveniently obtain an expression for the degree of nonlinearity and therefore exercise greater control over it. This instrument is based on early proposals made by the I.R.E. Committee on Video Techniques. Wider use of such instruments should prove beneficial to the industry and result in further refinements.