RE: I said I wouldn't...

[Pedro de Oliveira <oliveirp@xxxxxxx>]

Hi Dave
Thanks for the offer of help but at this stage I am only investigating if
this is possible to do or not with laptop screens hooked up to a PC.  I
don't want to run it from a SBC and from what Phil said - it seems its not
possible to get from a PCI graphics card to a laptop screens "hair
like"
wires.

If there is a way and I have simply misinterpreted what has been said then
please correct me as this would be perfect for me.
Cheers
Pedro de Oliveira


-----Original Message-----
From: Dave McLaughlin [mailto:dave@xxxxxxx]
Sent: 22 October 2001 00:19
To: ukha_d@xxxxxxx
Subject: RE: [ukha_d] I said I wouldn't...

Hi Phil,

The interface to most LCD panels on laptops is actually quite simple with a
frame pulse, 18 or 24 bits of digital colour data (6 bits, red green and
blue for the 18 bit and 8 each for the 24 bit) a clock for each of the row
pixels and a pulse for each line.

Any of the single board computers with LCD drivers can be hooked up to
these
LCD's as long as you have the pinout for the LCD itself. I tend to stick to
NEC LCD panels and you can find these on eBay.

Which LCD make and part No. have you got Pedro? I might be able to help you
with this one.

The best thing is that you can run Windows on these boards and then run a
simple full screen programme to display your pictures or video. I have seen
video running on a 300Mhz NS Geode based board with smooth graphics.

Regards
Dave...



-----Original Message-----
From: Phil Harris [mailto:phillip.harris1@xxxxxxx]
Sent: 21 October 2001 18:23
To: ukha_d@xxxxxxx
Subject: RE: [ukha_d] I said I wouldn't...



Nope ... LCD displays aren't driven from Red/Green/Blue/Sync like monitors
.... if you take a look at the connector for the 1280x768 LCD panel that is
on my VAIO there are about 70 or more almost hair-fine wires which are used
to supply the row-column signals required to run the screen.

Phil

> -----Original Message-----
> From: Pedro de Oliveira [mailto:oliveirp@xxxxxxx]
> Sent: 21 October 2001 18:16
> To: 'ukha_d@xxxxxxx'
> Subject: RE: [ukha_d] I said I wouldn't...
>
>
> Phil
>
> I didn't read your second post but yes I am thinking of using the LCD
as a
> rolling still picture or maybe even showing small family videos
without
> sound.  Taking your point about the PCB - wouldn't it be possible to
> substitute it with a monitor cable and a power supply?
>
> Pedro
>
> -----Original Message-----
> From: Phil Harris
> To: ukha_d@xxxxxxx
> Sent: 21/10/01 18:10
> Subject: RE: [ukha_d] I said I wouldn't...
>
>
> I am of course assuming that you are referring to the recent thread
> about
> sticking an LCD panel on an overhead projector and using that as a
> projection display...
>
> ...if you're thinking of just using an LCD screen as a rolling still
> picture
> then the same kinds of problems exist (i.e. you still need to drive it
> from
> a laptop PCB) but the decoding speed is less of an issue.
>
> The problem you then have is extending the signal leads to the screen
as
> there are loads of the suckers and they are fairly limited in their
> maximum
> length ... for example I wanted at one point to mount the screen from
my
> VAIO PCG-C1F (1280 x 768 resolution widescreen format) in my sunvisor
> but it
> wasn't possible due to the distance it would have had to drive!
>
> Phil
>
> > > -----Original Message-----
> > > From: Pedro de Oliveira [mailto:oliveirp@xxxxxxx]
> > > Sent: 21 October 2001 17:45
> > > To: 'ukha_d@xxxxxxx'
> > > Subject: RE: [ukha_d] I said I wouldn't...
> > >
> > >
> > > Some time back (on this topic) someone mentioned taking the
LCD
> > > display from
> > > a laptop and using it as a picture.  How would you do this
in terms
> of
> > > connectors and power?
> > >
> > > Cheers
> > > Pedro de Oliveira
> > >
> > >
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> >
>
>
>
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