[mythtv-users] TV Output

[Dan Robinson]

Does anyone know of someone who does/could make these cables up
(with/without the switching bit), I'm sure they'd get a number of
Myth/Linux related customers who want the optimum TV picture using
this route.  Especially if Jarod added this option to his guide!


On Mon, 10 Jan 2005 13:13:16 +0000, Dan Robinson
<dannyjrobinson at gmail.com> wrote:
> > > I have soldered the cable, but my tv doesn't auto switch.  I wonder how
> > > that works though.  Does it require pin 8?  Quote:
> > > Internal: 0.0...2.0 V
> > > External (16:9): 4.5...7.0 V
> > > External (4:3): 9.5...12.0 V
> > > Should we just set it up with 12V?
> > > And can we switch it to 16:9 using a relay if that format is detected?  I
> > > can remember someone on the list wanting to try it, but couldn't find it
> > > in my history.
> >
> > There are two pins you may need - pin 8 indicates the presence of
> > a signal and it's format and there is another pin to indicate whether
> > the source is composite or RGB data.
> >
> > My TV allows me to explicitly select RGB which works even if the
> > pin is indicating composite so I just use that. Plus I changed the
> > default mode to 16:9 which means the display is always right because
> > Myth pillarboxes 4:3 output by default if it thinks you have a 16:9
> > display.
> >
> > As to switching to the Myth input, well my TV is pretty much always
> > on that now and as the Myth box is always on when would it auto switch
> > to it ;-)
> 
> My Myth box is the only thing connected to the TV so that's the only
> input signal (via the non-rgb scart socket currently, but via rgb
> scart asap).  However, when I switch on the TV it defaults to a TV
> channel rather than the scart.  Then I have to hit the AV button to
> cycle to the myth input.  I want to just power-on and have the TV
> switch over automatically as it does with other devices I've used in
> the past.  I guess these used Pin 8 or similar.
> 
> One other thought is that (although it's another link in chain) is to
> use a scart switch box and have Myth as the default input to that such
> that the switch box has Pin 8 already wired.  It's a lot of effort for
> such a feature mind!
>