The Effects of Analog Filtering on the Picture Quality of Component Digital Television Systems

Abstract

The analog filtering performed in conjunction with component digital video systems has a dramatic effect on picture quality. This paper discusses filter trade-offs for several levels of a hierarchy of component digital television systems and illustrates the effects of these trade-offs on picture quality. The optimization of subjective picture quality results in unconventional filter characteristics and challenges the headroom <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">*</sup> requirements that are often cited for digital video systems.