Ok, so just recently I figured out that the R-Y Gain and G-Y Gain parameters in my Toshiba's(Orion's) service menu are color decoder parameters. There are 4 of them.

R-Y gain
R-Y pahse(I assume they meant "phase")
G-Y gain
G-Y phase

Now, when I adjust the R-Y gain, I can clearly see the "red push" rising and dropping. Same with G-Y gain.

But what are the Phase parameters for? When I adjust the R-Y pahse, it clearly affects the amount of red in the yellows(something R-Y gain does not do) and mildly increases or decreases the red push. And when I adjust the G-Y pahse, it also affects the amount of red in the yellow without affecting the red push at all.

The strange thing is, when I turn the G-Y pahse UP, the yellows get redder! What gives? I guess I just need an explantion of what the difference between gain and phase is, and why turning up the G-Y phase increases the reds.

Should I drop the R-Y gain to 0 and adjust the yellows with R-Y phase? Or adjust yellows with G-Y phase?

Greetings

Think of one as red saturation and the other as Red tint.

ditto for the other ones.

Regards

Alright, that sounds about right. Right after I posted this thread, I found another one regarding these parameters.

http://www.avsforum.com/avs-vb/showthread.php?t=695014

Do you know where I can get a jpeg, or PNG of a test pattern? I guess I need one with grays of equal brightness adjacent to the colors.

Greetings

A SMpte color bar pattern is all you need with these parameters ... and the red filter and the green filter.

Regards

Why does G-Y phase increase the redness of yellows?
R-Y phase already does that, so I thought it would increase the greenness of the yellows.

Why does G-Y phase increase the redness of yellows?
R-Y phase already does that, so I thought it would increase the greenness of the yellows.

Examine the CIE chart...if you push in any direction from the center, you are going to arrive at a combination of R and/or G and/or B in some proportion. If you push hard enough, anything can happen.

Often Color Decoders are designed to overcome other flaws in a product. Say, Red phosphor is chosen for Luminence properties, yet it is skewed toward Orange. Judicious (not accurate, but judicious) Color Decoder design can try to enact a correction as the image is viewed in, perhaps, the default mode.

Don't make an assumption that a Decoder can be properly adjusted on any particular display if the parameters exist to do such.

It's sort of like going to 7-Eleven, grabbing a cup, and then going crazy with the fountain drink levers...one man's tasty concoction might just really be another man's poison.

Examine the CIE chart...if you push in any direction from the center, you are going to arrive at a combination of R and/or G and/or B in some proportion. If you push hard enough, anything can happen.

Often Color Decoders are designed to overcome other flaws in a product. Say, Red phosphor is chosen for Luminence properties, yet it is skewed toward Orange. Judicious (not accurate, but judicious) Color Decoder design can try to enact a correction as the image is viewed in, perhaps, the default mode.

Don't make an assumption that a Decoder can be properly adjusted on any particular display if the parameters exist to do such.

It's sort of like going to 7-Eleven, grabbing a cup, and then going crazy with the fountain drink levers...one man's tasty concoction might just really be another man's poison.

Well that's kinda discouraging.

I have an Samsung EDTV SPS4243 and it's great but the outline of my red color are all crappy, they don't blend well, the outle is pixelate, im waiting for the input code to enter the factory menu, can that be change in R-Y menu ?