[quote name=\'clemon79\' post=\'150073\' date=\'Apr 12 2007, 06:14 PM\']Would Master have to switch over from feeding an HD signal during, say, commercial breaks? If so, they could forget to switch back.[/quote]
I think you're correct...I've been watching "Jeopardy!" in HD on my computer on occasion for the last couple of months, and a handful of times, I've seen KABC's broadcast come back from commercials in SD and then "jump" to HD after a second or two.
[quote name=\'TimK2003\' post=\'150076\' date=\'Apr 12 2007, 07:09 PM\']Of course, all these problems will be fixed by Feb 19, 2009 when everybody is required to switch to HD...[/quote]
Everybody is required to switch to digital. They are perfectly free to broadcast in HD, or in SD, or in a 200-line black-and-white format previously used only to broadcast a rotating Felix the Cat figurine...just as long as they do it digitally.