PDA

View Full Version : Video


filburt1
Sat 18th Oct '03, 2:16pm
Is it possible to connect component video (Y/Pb/Pr) to a computer monitor's BNC connectors? My monitor has 5 BNC connectors (V, B, R, H/HV, G/SYNC).

Wayne Luke
Sat 18th Oct '03, 2:20pm
Considering your monitor doesn't have composite video connectors, it would be a safe guess to say that this won't work without an adapter or RF modulater.

filburt1
Sat 18th Oct '03, 2:28pm
Yes, but there are BNC (male) to RCA (female) adapters. I got the idea from reading my DVD player manual:
When the component video input jacks on the TV are of the BNC type, use an adapter to convert a pin jack to a BNC jack.
Also the names seem similar (Pb to B, Pr to Br...).

Not saying you're wrong, though, I'm just hoping you are. ;)

Wayne Luke
Sat 18th Oct '03, 2:39pm
I said it wouldn't work without an adaptor or RF modulator...

Might as well try it. If you have a CRT, the worst you can do is blow up the phosphor guns. Not sure what effect it would have on a plasma based screen.

Then again, you could read your monitor manual or consult the manufacturer to see if your particular model supports composite video in this manner.

filburt1
Sat 18th Oct '03, 2:40pm
I said it wouldn't work without an adaptor or RF modulator...

Might as well try it. If you have a CRT, the worst you can do is blow up the phosphor guns. Not sure what effect it would have on a plasma based screen.

Then again, you could read your monitor manual or consult the manufacturer to see if your particular model supports composite video in this manner.
Sorry, only saw the modulator part (which would degrade the image, of course).

Here's a scan from the manual; if component syncs on green then it might work because in the manual that's the only connection type that uses three pins.

Wayne Luke
Sat 18th Oct '03, 11:26pm
Maybe... Component transmit luma and the green channel (Y) but I can't find anything about synchronization.

filburt1
Sat 18th Oct '03, 11:42pm
Thanks for the help so far...I might just get three BNC to RCA adapters; I just don't want to risk blowing out my monitor.

dabean
Sun 19th Oct '03, 1:37am
Component Y/Pr/Pb is not compatible with V,B,R,H/HV,G/SYNC 5-BNC.

Basically the component signals are divided as follows:
Y = BW.
Pb difference signal between Y and B (Blue)
Pr difference signal between Y and R (Red)

The 5-BNC signals:
V = Black
H/HV = Grey
B = Blue
R = Red
G/Sync = Green

To get something thats 5-BNC compatible you need a converter box that internally does:
Y+Pb = B
Y+Pr = R
Y-((Y+Pb)+(Y+Pr)) = G

This leaves you with a relatively clean RGB seperated signal, with the sync on the green.

filburt1
Sun 19th Oct '03, 10:54am
Nuts! Thanks for the help. :)