PDA

View Full Version : DVI to HDMI



VJ
5th August 2005, 01:45
Hello,

My brother is about to purchase a laptop (probabely some Fujitsu Amilo model). The laptop has DVI-I and offers 2 display options for its LCD: 1440x900 or 1920x1200. The later states HDTV1080 compliance. The videocard is a GeForce Go6800 (256 MB DDR1 external Video RAM).

So it got me wondering:

Is it possible to connect a DVI to HDMI cable and get HDTV via the DVI output?



Jörg

uberlad
5th August 2005, 02:42
I know it's possible to get DVI out of a HDMI cable as my TV is HDMI HD compatible yet only has a DVI port. I presume that the reverse will be true, albeit without any sound.

Uberlad

VJ
5th August 2005, 02:57
Sound isn't a problem: the laptop has an spdif out, and his home cinema amplifier has an spdif in. So sound would have to go another device anyway.

The cables exists, i.e. : http://www.bettercables.com/dvihdmicables.html

But should the video card be capable of anything special, or is 1080 HDTV just a specific resolution you need to set?


Jörg

VJ
9th August 2005, 01:06
But should the video card be capable of anything special, or is 1080 HDTV just a specific resolution you need to set?

No ideas on this matter?
:(


Jörg

DC
9th August 2005, 01:32
HDMI is based on the DVI standard, so DVI is a fully subset of the HDMI functionset. So HDMI is able to display any DVI-Signal. DVI->HDMI is no Problem.

But if you have an HDMI-Output and a DVI-Input, you may have Problems. Since HDMI is a Superset of DVI, DVI has not all the functionset of HDMI and cannot handle everything that HDMI delivers.

I only found a German FAQ (http://www.jim-versand.de/shopdh/catalog/video.php)

DC

VJ
9th August 2005, 01:55
Oh, so any card that has a DVI connector can be used to drive a HDTV (via HDMI) ?
Cool... :cool:


Jörg

DC
9th August 2005, 06:57
Yes and No ...

the DVI is compatible to HDMI but that means not that every Graphiccard with DVI can drive a HDTV.

Example: You have a HDTV with 1080p resolution and a video in 1920x1080. Your Graphiccard is maybe a G550 which can only display 1280x1024 pix. via DVI.

You see the Problem ... technically the HDMI can do everything DVI can do, but it is something totally different if your PC can drive the HDTV in the desired resolution.

DC

VJ
23rd August 2005, 02:50
Sorry about the late reply...

Well, the graphic card can handle that resolution over DVI (another version of the laptop has an LCD with that resolution, but it has the same video card). So it should work...

Thanks!


Jörg