[Open-graphics] Interlaced vs. progressive scan HDTV

[Dieter]

> It appears that many HDTV sets display 1080p which they generate 
> internally (those with so-called 3:2 pull down have to do it) and all 
> flat panels are progressive (although most of them are currently 720 
> lines).  Strange thing about 3:2 is that they don't display it at 48 fps 
> as theaters do (24 fps movie projectors have a two blade shutter to 
> avoid flicker)

If you display a 24 fps movie on a LCD, how do you avoid flicker?
Once a pixel settles into a new value, it just stays there constantly,
unlike a CRT where the phospher is constantly fading and being refreshed.
LCDs aren't fast enough (yet?) to simulate the double shutter they do
with film.