Converting TTL monitor to Analog

From: Richard Erlacher <edick_at_idcomm.com>
Date: Fri May 11 10:12:01 2001

If it's serialized then it's really moving along! if you've got 1K pixels at a
nominally 65 MHz pixel rate with 24 bits per pixel ... I assume the designers at
least use three channels, one for each color, so as to reduce that to 8 bits per
pixel, right?

For most applications, the distance from the "box" to the display isn't far at
all, but I can see the benefit where a large display might be desirable, as in a
classroom or demonstration environment.

Nevertheless, aside from relatively small signal losses, there isn't a big
advantage, aside from the fact that every display manufacturer can process the
signal however he prefers.

That makes it possible to use essentially the same signal arrangement, which
seems a mite risky to me. It makes me wonder whether the DE15's I've seen on
the flat-panel displays are for a standard VGA signal arrangement or something
else.

What sort of connector is used for the serialized digital arrangement?

Dick

----- Original Message -----
From: "Davison, Lee" <Lee.Davison_at_merlincommunications.com>
To: <classiccmp_at_classiccmp.org>
Sent: Friday, May 11, 2001 2:27 AM
Subject: RE: Converting TTL monitor to Analog


>
>
> What sort of digital interface would such devices use? They'd have
> to have lots
> of wires, e.g. 26 or so pairs, if the thing is using 24-bit color.
> Perish the
> thought someone would use more color depth than that! It's hard to
> imagine
> they'd do that. The number of wires that have to transport
> high-frequency
> signal is the reason the analog is still so difficult to surpass.
>
> Not if a serial video bitstream were used. It's actually easier to use this
> than
> an analogue feed over any significant distance.
>
> Lee.
>
>
>
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Received on Fri May 11 2001 - 10:12:01 BST

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