[vdr] Re: VGA-RGB 2 SCART (WAS: Re: Increasing SDRAM on DVB cards)

["Drouzas, Stefan" <SDrouzas@tee.toshiba.de>]

Maybe you find this usefull:

http://www.hut.fi/Misc/Electronics/circuits/vga2tv/circuit.html

There is also existing a even more simple solution with
just one PNP transistor.
Works only with Matrox. We've tried it out on an old PCI Matrox 200.
Resolution and Freq. has to be set correctly on Linux driver.

Picture width has slightly to small width and a little bit more
height for TV screen 4:3. But syncs fine.

Stefan




-----Original Message-----
From: Rene Bartsch [mailto:ml@bartschnet.de]
Sent: Mittwoch, 18. Juni 2003 13:20
To: VDR-ML
Subject: [vdr] Re: VGA-RGB 2 SCART (WAS: Re: Increasing SDRAM on DVB
cards)


Am Mit, 2003-06-18 um 13.11 schrieb stefan@lucke.in-berlin.de:
> Zitiere Jörg Knitter <joerg.knitter@gmx.de>:
> 
> > > Stefan Lucke wrote:
> > > 
> > > Why do you think graphic cards have no RGB output ? Thats the normal
> > way
> > > monitors are connected to.
> > > 
> > 
> > Oops, you might be right. But I still haven´t read anything about
> > connecting a VGA output directly to an RGB TV set. Don´t you have to
> > additionally set the VGA output frequency to 50 Hz? What about the
> > output resolution etc.?
> 
> Thats just quiet easy (using framebuffer driver) :-)
> 
> fbset my-pal-1    for PAL DVDs
> fbset my-ntsc-1   for playing NTSC DVDs
> 
> It's fine with my G400 and mplayer.
> 
> The feature that graphic cards MUST has is: combined H + V sync output.
> I can post modline entries when I'm back home.
> 
> Stefan Lucke

See

http://www.hut.fi/Misc/Electronics/circuits/vga2tv/linux_tv.html
http://www.unix-ag.uni-kl.de/~pfeffer/tvout/			(German)
http://www.sput.nl/hardware/tv-x.html

for further information. As a lot of cheap TVs generate their 
high-voltage by the signal-frequencys what could result in the 
TV going up into flames with wrong modlines, you should use filters 
in the cable (especially in sync-line).

Rene



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