ABSTRACT
We have seen already, however, that there are several major considerations, both technical and commercial, which make it unlikely that there will suddenly be a technological revolution which persuades all the people to throw away their existing equipment and rush around to the local shop to buy brand new HDTV receivers. It is therefore very important to give the strongest consideration to the various ways in which HDTV might be introduced, assuming that in the longer term HDTV will become the normal method of watching television.
