An HDTV program requires much higher datarates (3-4x) than a standard-definition program.

Simulated HDTV programs, however, will not be of the same quality as those that actually originate in high definition.

But the F.C.C. had decreed that HDTV programs must be broadcast over a conventional channel.

This TV displays HDTV programs in full 1920 x 1080p resolution for a more detailed picture.

Under the agreement, HDTV programs from network broadcasters sent through cable or satellite companies will be completely unrestricted and recordable.

It is compared to anlog TV that can't broadcast HDTV program.

When it comes to watching HDTV programs through a cable system, things become messier.

Watch for Powerline plugs that will use a home's existing wires to move digital content, including HDTV programs or movies, around the house.

That is largely because satellite broadcasters would have to knock four or five conventional channels off the air to offer one HDTV program.

Will people still want to watch when the picture quality is so much worse than the HDTV program on the very next channel?