That 200Hz TV does interpolation in the "time"-dimension (inserts three new frames between each two from the 50Hz input source). The inputs are standard video-like (HDMI with 1920x1080/60Hz max = single link).
The reason is to smooth out motion (e.g. at camera panning), because on large screen the 50hz content moves a big distance between frames and thats bad. I'm working now on a LED matrix screen: when tested scrolling at 300 hz or 50hz with the same px/sec speed, the one with higher refresh looks smoother and nicer. To the contrary, the mentioned (best) LCD monitor can accept a 120hz source and display it. (and as you calculated, it requires dual-link connection). I see no confusion.. Daniel PS. the reason for such a high refresh rate LCD is the further elimination of blur from switching black-white: the transitions are not backlit, just the "stable" state, so it requires a flashy backlight. Doing that on the current 60Hz LCD is not nice.. but on 240+ Hz you wont notice it and when you do not see the transitions, you think the screen is just faster/sharper. The same principle as projecting celuloid in cinemas - it's lit only when stable, the moving phase is masked out :) Dieter wrote: > So I'm reading about 200 Hz tvs/monitors at > > http://DansData.com/askdan00043.htm > > and a few questions come to mind. If a single-link DVI > maxes out at 1920x1200 60 Hz, then 1920x1200 120 Hz should > max out dual-link DVI. So even dual-link isn't fast enough > for 200 Hz. A first order wild guess calculation says > dual-link might be good for 1920x1080 at approx 133 Hz. > Does HDMI or Displayport have a higher limit than DVI? > > Last time I looked at LCD speeds, they weren't fast enough > to do 60 Hz properly. For 200 Hz you'd want the worst case > change time to be < 5 milliseconds. The marketing numbers > they throw around are *not* worst case. Dan neglects to > mention this problem. > > Dan's writing is confusing. First he says that 200 Hz TVs > "have a genuine 200Hz frame-rate". Then later he says > " "200Hz" televisions are not the same as "200Hz" computer > monitors " and "we'll be seeing complaints from poor schmoes > who've spent all week trying to make 3D Vision work with their > new $US2000 "200Hz" LCD TV". As far as I can see, the > difference is that TVs include fancy image processing (and a > tuner). Surely you can turn off the image processing? > Or is there some other difference that would spoil shutter > glasses 3D? > > Speaking of 3D, does anyone have a pair of the recent yellow/purple > glasses they could run through a transparency scanner? Given > the various descriptions of the colors (yellow-amber-brown, and > blue-purple) it's hard to know what colors to look for to build > a pair. > _______________________________________________ > Open-graphics mailing list > [email protected] > http://lists.duskglow.com/mailman/listinfo/open-graphics > List service provided by Duskglow Consulting, LLC (www.duskglow.com) _______________________________________________ Open-graphics mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com)
