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Discussion Starter · #1 ·
Did anybody try to hook up any HD TV source to IBM T221 or Viewsonic with the same panel ? How they perform in 1920x1080p mode ? What are refresh rate in case of DVI and RGB inputs ? Is there any PC card capable of input 1080i or 720p in RGB or component video or DVI or FireWire and output through (2) or (4) DVI to up-convert to 1080p (1920x1080x60Hz) and further to 3840x2160 (which I would call 2180p) ?
 

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Unfortunately, T210 is to small and low resolution. 1920x1080 is not a problem - for example 24" Samsung TLM-245W.


Is there any way to input un-compressed HD TV to computer (via RGB or DVI or components video, not through HDTV Fusion card which has only RF In for off-air HDTV) to record on HD HDTV Satellite or from JVC D-VHS and display on T221 via dual-DVI of nVidia Quadro FX2000 ?


kuzmanestor
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Unless you have an uncompressed HDTV source, it's a waste to get a whole setup to scale to 3840x2400, IMHO. If I were you, I'd either get a Samsung 24" LCD or wait till they have DVI-HDCP. I don't see the advantage of scaling 1080i/p to 3840x2400. If you don't mind RPTV, get the Toshiba LCOS.


With a P4 3.0GHz w/800MHz FSB and a Quadro FX 2000, I was able to view the Microsoft "Liquid" HDTV demo at full 3840x2400 (black bars top+bottom) with only 1 dropped frame (probably when I was maximizing the window). CPU usage peaks at about 60%. The video is quite blocky though.


With uncompressed 1080i, you are talking about 200MB/s. You'll need a system with 66MHz/64-bit PCI. Maybe you can check out what people use for videowalls and see if they have any gear that can split 1920x1080 into four 960x540 and use 2 or 4 computers to scale them with genlocking Quadro FX 2000s. The T221 can be driven as four quadrants of 1920x1200.


--wilson
 

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Word I've heard is that the hi-density LCD has a really low switching time, so regardless of the refresh rate, any scene with much movement is going to have so much smearing as to be unwatchable.
 

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Yes, in absolute terms, the pixel response is very slow. Its short-term persistence is so long that certain patterns, like white on black, take up to 10 seconds to completely disappear. Surprisingly, videos are quite watchable on this panel, more so than the small Sharp and Panasonic TVs I've seen at stores.
 
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