An HDTV codec conforming to MPEG-2 MP@HL was developed to study digital HDTV broadcasting systems. The newly developed codec is expected to be applicable to various purposes ranging from program material transmission to broadcasting. In order to develop the digital broadcasting system, it is necessary to check the coded picture quality with diverse image sequences under different coding conditions in real time. Using the codec, a relationship between bit-rate and picture quality for the digital HDTV broadcasting has been identified through coding experiments and subjective evaluation tests.
