Main > Everything Else
Anyone know how to build a "VGA out" to a "component in" box?
MonMotha:
The issue is that the scalers built into televisions are designed for photorealistic images, not blocky pixel art like used on old-school video games. The upconversion blurs the heck out of the edges to try to make it "smooth" when, for pixel art, this is just about the most wrong thing you can do. There are actually special scaling algorithms out there just for scaling up pixel art, and I think MAME supports some of them, as well as some old console emulators, so simply using an emulator with upscaling to the native resolution of your TV is probably the easiest and most cost effective solution.
An outboard scaler could be developed that implements these scaling algorithms to allow plug and play operation with a TV and an actual old console. I'd offer to do it for you (I know how), but it's probably not worth it either in time or what it would end up costing you.
mvsfan:
--- Quote from: MonMotha on November 05, 2010, 08:33:29 pm ---The issue is that the scalers built into televisions are designed for photorealistic images, not blocky pixel art like used on old-school video games. The upconversion blurs the heck out of the edges to try to make it "smooth" when, for pixel art, this is just about the most wrong thing you can do. There are actually special scaling algorithms out there just for scaling up pixel art, and I think MAME supports some of them, as well as some old console emulators, so simply using an emulator with upscaling to the native resolution of your TV is probably the easiest and most cost effective solution.
An outboard scaler could be developed that implements these scaling algorithms to allow plug and play operation with a TV and an actual old console. I'd offer to do it for you (I know how), but it's probably not worth it either in time or what it would end up costing you.
no, i dont think it would be worth the time.
Ive got 5 tube tvs im currently not using, and ive got a 40" upstairs thats hooked to my consoles.
I had bought a 52" HDTV as a replacement for the 40" tube, and when i realized what i was in for with games, i put the 40 right back in its spot.
Im currently using the brand new hdtv as a computer monitor though i do have them in all the other rooms for directv.
--- End quote ---
BurgerKingDiamond:
hmm. I'm not sure about this at all, but I know that Component cables are misleading. Even though they are colored Red, Green, Blue, component cables are not truly R,G,B. I looked it up one day, it's some other colorspace. So I don't think you can just pull the R,G,B signals from VGA and then amplify them... But I'm no expert.
Frigo:
--- Quote from: BurgerKingDiamond on November 17, 2010, 11:02:05 am ---hmm. I'm not sure about this at all, but I know that Component cables are misleading. Even though they are colored Red, Green, Blue, component cables are not truly R,G,B. I looked it up one day, it's some other colorspace. So I don't think you can just pull the R,G,B signals from VGA and then amplify them... But I'm no expert.
--- End quote ---
Nope Y (green) carries Luma and sync signals like 1/2 of an s-video cable. Pb (blue) carries the difference between blue and luma, and Pr (Red) carries the difference between red and luma. The TV takes all that info and figures out what green is based on those signals. That's why a converter is needed from RGB to Component. I think I'll just end up buying a converter box - there isn't enough info out there for me to build one on my own.
boykster:
I don't remember if / how well it worked, but there was a DIY VGA->component thread on AVS many moons ago
http://archive.avsforum.com/avs-vb/showthread.php?threadid=193919
Here's a link to the article referenced by the OP
http://www.keohi.com/keohihdtv/interfaces/diytranscoder.html
and to the schematic
http://www.keohi.com/keohihdtv/interfaces/diytranscoder_johrhees.html
You might skim that thread to see if anyone successfully built one before spending too much time down this avenue. Considering how inexpensive they converter boxes are these days, I'd just buy one.
Navigation
[0] Message Index
[*] Previous page
Go to full version