rgb on a dvd player

gotchocolatemilk2 · Post by **gotchocolatemilk2** » Tue Oct 26, 2004 8:23 pm

can u mod a dvd player to use rgb and if so how ?

JackFrost22 · Post by **JackFrost22** » Wed Oct 27, 2004 4:18 pm

tHEY ALL DO AUTOMATICALLY oR ATLEAST THE 7 OR SO i HAVE AT MY HOUSE OH CRAP MY CAPS LOCK HAS A PROBLEM. OH WAIT IS JUST ON. Thats better

gotchocolatemilk2 · Post by **gotchocolatemilk2** » Wed Oct 27, 2004 5:23 pm

tHEY ALL DO AUTOMATICALLY

what do u mean they automatically the ones i have do not have an rgb out so i have no clue what u r talking about

Post by **gannon** » Wed Oct 27, 2004 7:09 pm

I think he's thinking of component output....
Anyways, I'm not sure if they do, you might be able to open one up and look for a chroma encoder, then mod it for rgb output.

gotchocolatemilk2 · Post by **gotchocolatemilk2** » Wed Oct 27, 2004 9:01 pm

well if its possible and its hard i might need some one to pioneer it for me because im not a electronics guru

Dave · Post by **Dave** » Wed Oct 27, 2004 9:30 pm

It would be more worth your while to buy a portable DVD Player.

JackFrost22 · Post by **JackFrost22** » Thu Oct 28, 2004 2:30 pm

Whats the difference between component and rgb? Seriously

HK-47 · Post by **HK-47** » Thu Oct 28, 2004 2:45 pm

One needs one cable for video, and the other needs three.

Post by **gannon** » Thu Oct 28, 2004 2:46 pm

GB contains the separate informations for the red, green, and blue component as separate channels. (The sync signal can be provided in different ways, but is not part of this short explanation.)
Each of the three channels R, G and B includes luminance. Viewing one channel separately, a black and white image is visible.

YPrPb (YUV) signals are matrixed components. The luminance Y signal is derived from the Red, Green, and Blue components by the formula 30% Red, 59% Green, and 11% Blue. The R-Y signal (Pr) is derived by subtracting this luminance signal from the Red signal. The resulting signal contains only color difference component for red.
The B-Y or Pb signal is derived by subtracting the Y signal from the blue signal to get the color component of blue. A G-Y component for green is not needed because all information is carried with the Y signal and the red and blue color component.

The reason to use YPrPb instead of RGB is the large amount of saved bandwidth. In the RGB signal the luminance component is carried three times. Typically, the color components are about half the bandwidth of the luminance component. Therefore about 4 Mhz of the necessary RGB bandwidth of about 12 Mhz can be saved.
The luminance image (Y) will usually be transmitted 25 or 30 times per second, while the two difference signals will alternate at half that rate.
In the receiving unit the signal is matrixed and the original information is available again.

Y is luminance, U and V are the color differences: U = R-Y, V = B-Y

Note, I didn't write all this, I just found a page in google and pasted the relevant info here.

JackFrost22 · Post by **JackFrost22** » Thu Oct 28, 2004 2:53 pm

Oh I get it now.