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Old 02-04-2009, 11:43 PM   #1
arnuld
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Using LCD TV as monitor


Is it s good idea to use a 42 inch LCD(HD) TV like this or this as a replacement for LCD monitors ?

One of my colleagues told me that we should buy LCD monitor instead of LCD TV because monitors are designed with one thing in mind: close-contact to eyes while LCD TVs are not, so they are bad for eyes. What you people say ?

2nd, these 42 inches HD TVs offer 1080p of video with contrast ratios like 50000:1 (not available with LCD monitors at all) though they are 6-8 times more expansive than a typical 22 inches LCD monitor. I am not building a Linux box with HDTV, I don't have that amount of money but I was just intrigued by the idea so I am very much curious on this.

Last edited by arnuld; 02-04-2009 at 11:53 PM.
 
Old 02-05-2009, 05:40 AM   #2
theacerguy
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well if it has vga in its fine i know mine does if your graphics card supports s-video or composite video(the yellow thingy) it should be fine
 
Old 02-05-2009, 05:55 AM   #3
arnuld
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Quote:
Originally Posted by theacerguy View Post
well if it has vga in its fine i know mine does if your graphics card supports s-video or composite video(the yellow thingy) it should be fine

All HDTVs have HDMI and DVI ports. Since all graphic cards support DVI, so I think we don't need S-Video anymore. Whats composite video BTW ?
 
Old 02-05-2009, 06:03 AM   #4
XenaneX
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I tried s-video to a 42" LCD HDTV and found the result to be grainy. I guess I could have tried a different resolution.
 
Old 02-05-2009, 07:19 AM   #5
JulianTosh
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My daughter has a 32" VIZIO LCD driven by an nvidia card (5500 DVI-to-HDMI). She uses it to watch DVDs while she does her other computing on a 20" lcd (dual monitor). Picture is great. Text is a bit fuzzy but readable. No complaints except there is a 20-30 pixel overscan on all sides.
 
Old 02-05-2009, 10:06 PM   #6
Electro
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A LCD TV can be used for computer use. The dot pitch is poor at over 0.28 mm. A dot pitch lower or smaller than 0.28 mm is better for computer use.

A contrast to brightness ratio of 50000:1 means with extra help from internal software. It is not a realistic value. A realistic value will be close to 5000:1 or the worst of conditions of 2500:1. Also contrast to brightness ratio is not a good spec to compare from one screen to the next. This value should only be compared of the same manufacture.

A DLP monitor is cheaper and better than LCD. Also DLP are lighter in weight. They need some distance to provide their picture. DLP are faster than LCD and can produce higher contrast to brightness ratios and of course comparing other monitor models from the same manufacture.

Quote:
Originally Posted by arnuld
Whats composite video BTW ?
Uses an RCA or phono jack. Its load is 75 ohms.
 
Old 02-05-2009, 10:21 PM   #7
Quakeboy02
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I'm not so sure it's practical to use a 42" monitor at the normal eye-to-monitor spacing. There probably won't be enough pixels, so text may be grainy, and you probably won't even be happy with videos because they'll have a lower (~1/4th) effective resolution for the same physical size. A smaller combination TV/monitor usually works fine. My daughter switched to 21" Magnavox LCD on her Mac, because it didn't seem practical to hook up anything external to make a regular monitor work for both TV and computer usage.

I have a 50" LCD, and I've experimented with using it, but it's really impractical for anything other than as an entertainment center.

DLP monitors, I just don't like at all: because of the rainbow effect when watching sports. Motor and Bike racing, which I watch a lot of, would be a horrible experience.
 
Old 02-06-2009, 01:53 AM   #8
theacerguy
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Quote:
Originally Posted by arnuld View Post
All HDTVs have HDMI and DVI ports. Since all graphic cards support DVI, so I think we don't need S-Video anymore. Whats composite video BTW ?
well if you have a wii or ps2 this will be easier it is the video lead on 3 lead scart u no yellow white red
ps2's and wii's have them and most tv's at the side or front
 
  


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