Re: DVI

[Chris Hunter <cjhunter@xxxxxxxxxxxx>]

Phil -

Many thanks ... I did Google & did find the overview on Wiki, plus
others, but it left open the question of what was the norm ... just
about all spec's just say DVI !!   My guess is that DVI-I is the
norm, for backward compatibility, and some Commell cards come with
DVI as an add-on (mini-AGP or PCIe), which leaves open the point
about the type of DCI output ...

I need DVI on Mini-ITX because the screen will do dual duty - mostly
on the next Apple machine, sometimes on the Idratek PC (for Idratek a
large screen would be best, but would not really be affordable if it
was dedicated just to that ... mostly likely it will be a 20"
1600x1200) ...


Chris


On 18 Apr 2006, at 09:04, Phil Harris wrote:

>
> This can be answered with a quick Google but - as I assume you
> couldn't find
> anything there as it is a bit confusing - this is a quick summary:
>
> A DVI connector has both analogue and digital connections (it
> actually has
> *TWO* sets of digital connections for single and dual link but that
> adds a
> layer of complexity that isn't needed to the explanation here).
>
> A DVI connection (say on a graphics card) will usually have both the
> analogue outputs (so it can drive a VGA monitor via a DVI to VGA
> adapter)
> and at least the first set of digital outputs. This is called DVI-I
> (Integrated)
>
> A connector which *ONLY* has the digital connections is called DVI-D
> (Digital).
>
> A connector which only has the analogue connections is called DVI-A
> (Analogue).
>
> As I said before, there are *TWO* possible sets of digital outputs
> on a
> DVI-D connector, *NOT* to drive two monitors from one DVI connector
> but
> because a DVI digital stream has a finite bandwidth it isn't able
> to drive
> enough data down one datastream for very high resolutions and this
> is where
> the second channel comes in - it allows you to drive higher
> resolutions. If
> you look at the details on the Apple cinema displays you'll see
> that the
> largest display does actually say that it *NEEDS* to be driven from a
> graphics card that supports dual channel output and specifies their
> "nutter"
> card as being the only one that is capable of driving the 30"
> display at
> full resolution.
>
> Phil
>
> > -----Original Message-----
> > From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx]
> > On Behalf Of Chris Hunter
> > Sent: 18 April 2006 08:32
> > To: ukha_d@xxxxxxx
> > Subject: [ukha_d] DVI
> >
> >
> > 'excuse my ignorance, but 'have just discovered that DVI can
> > have several forms (DVI-I, DVD-D, etc) ... does anyone know
> > what the norm is, please ... eg: Apple Cinema screens,
> > Commell Mini-ITX boards, etc ... ??
> >
> > Chris
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
>
>
>
>
>
>
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