RE: DVI

["Phil Harris" <phil@xxxxxxxxxxx>]

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
>
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> Yahoo! Groups Links
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