VGA or HDMI (1 Viewer)

[xisio]

native resolution is 1024x768 and if You give signal from dsub 1024x768 You dont need 1:1maping becouse this is 1:1, but if You want use HDMI 1280x720 yours PDP ll use 1366*768 but quality will be worst like dsub IMHO

 

[Aurora13]

There is (almost) no TV set which support 1:1 pixel mapping on HDMI. So even if you use 1024 x 768 over HDMI your tv set will overscan! Read the forums all over internet. To use 1:1 pixel mapping for TV's (which have no native resolution of 720p or 1080p) you have to use VGA not HDMI.

 

[Deco]

There is (almost) no TV set which support 1:1 pixel mapping on HDMI.

My Mirai 32" LCD TV supports 1:1 pixel mapping through HDMI. I using a cheapo DVI - HDMI cable from eBay to output from ATI x300 to TV.

Picture noticeably crisper through HDMI than VGA.

It seems to depend on the TV electronics rather than the price of the LCD TV!

Deco.

 

[Dexx]

A related question - i'm driving the HDMI port on my projector from the DVI out of the 6800gt card in my PC. If the PC is powered up before the projector, i get no image when i turn the projector on. Is it possible to force the PC to output via DVI regardless of whether theres anything attached?

 

[gloomyandy]

One of the things that has not been mentioned is refresh rates. For good viewing I think that having the correct refresh rate is perhaps the most important thing. If you are in Europe you probably want to use a refresh rate that is a multiple of 25...

Andy

 

[knutinh]

I have participated in a number of discussions on this topic. I think that all of my views are expressed in the posts below. The first post was an attempt from my side to give a guide to new users:

1. Do not purchase an lcd-tv with an "PC input" expecting it to work optimally. Chances are it wont. Ask specifically on a forum or make the salesman connect a PC!

2. The preferred connection is digitally through HDMI or DVI (equivalent). But VGA is also a good method. Use S-video only as a last resort for HD-resolution displays.

3. You may want to download the latest drivers for your graphics card. Most users seems to use ATI or Nvidia, and both are catering for lcd-tvs etc in later driver revisions. You may need powerstrip if you need absolute flexibility.

Now, as you have followed tips 1-3 you have compatible and working hardware.

What? You purchased a tv anyways, and now you come for help?=)

http://pixelmapping.wikispaces.com/P...ping+explained

As the link above shows, many tvs have a hard-wired scaler/cropper called "overscan". If you do, then you are in some ways out of luck. Because of poor engineering, you will never get a crystal clear PC image. This might not matter (natural video is a lot more forgiving to scaling), but a PC cannot fix a poorly designed tv. What you can do is set the PC up to do "resolution within a resolution". For instance 1100x694 pixels may mean that every PC pixels falls within the tv screen. Since the tv typically has 1280x768 pixels, it will still scale the image though.


One important parameter is framerate. If you live in the US or Japan, you will typically have a rate of 60Hz for tv transmissions and video content. Use this rate for the PC desktop to avoid stuttery tv image. For the rest of the world, this rate is 50 Hz

https://forum.team-mediaportal.com/guide_connecting_htpc_flatscreen-t14886.html

https://forum.team-mediaportal.com/samusung_lcd_tv_vga_dvi_hdmi-t22530.html

https://forum.team-mediaportal.com/graphics_card_does_resolution_matter-t14860.html

https://forum.team-mediaportal.com/can_we_make_better_tv_quality-t20235.html