>>>>> Brad Templeton writes:
b> Well, here's an odd failure story. I picked up a cable -- perhaps it
b> was too cheap, but the sense I get with HDMI and cheap cables is that as
b> a digital standard it either works or it doesn't.
b> So I plugged it into my TV and ran at 720p, same modeline I was driving
b> the (Mitsubishi) TV at with the VGA port it has on the back. I was
b> excited, now I would be going all digital!
b> And the image sucked! It wasn't as overscanned, which is nice, but it
b> was noticeably worse in computer display mode (which shows resolution
b> the best). In video it wasn't as noticeable a difference, but it
b> wasn't better, which was the whole goal.
Apparently, some DLP/LCD RP TVs convert their HDMI/DVI inputs
to analog. I don't know where you can get definitive information on
this but it's what some people on avsforum.com have reported. From
what I can tell, (some/all?) RCA, JVC, Sony, and Mitsubishi models do
this conversion. Samsung does not do this. You can probably find a
thread specific to your model on that site.
Also, the "PC mode" on these TVs for reducing overscan does it
by scaling the picture, which is probably why you get worse resolution
-- you don't have a 1:1 pixel mapping any more. (Makes sense if you
think about it -- the optics are fixed.) If you want the best
resolution with reduced overscan, you have to leave it in its regular
mode and send a smaller picture (eg. 704 lines). (This is exactly
what Myth allows you to do for its GUI.) Again, this is only what
I've found from looking through the avsforum threads so expert
opinions are welcome.
--
Gregorio Gervasio, Jr.
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