A migration path from multi-program MPEG-2 to HDTV

Technically it is now possible to produce HDTV encoders and decoders conforming to the MPEG-2 high definition profiles. However, reducing the cost of this equipment for both the broadcaster and consumer remains a challenging issue. Moreover, the widespread adoption of MPEG-2 based systems over the next few years will make the introduction of HDTV even more difficult. Broadcasters for example will be reluctant to invest in new HDTV equipment, unless they can see a return on their investment. This however will not be possible if the viewers do not purchase HDTV decoders in large volumes. Will consumers in the future be prepared to purchase yet another set-top box on top of their existing MPEG-2 MP@ML decoder? The answer to this question depends on the cost of the system and the perceived benefits of the HDTV system over standard definition TV to the consumer. This paper explores ways of reducing the cost of encoding systems by making use of installed MPEG-2 MP@ML equipment and illustrates a method of utilising low-cost MP@ML technology to make an affordable HDTV decoder with the integrated circuits probably costing no more than four times the cost of the components for a standard definition decoder