New HQV Vida Chipset! - Page 2

Cool. Can't wait to see where it turns up.

Does anyone have any advance CES info of where the Vida will show up in an AVR?

First let me say that I am actually looking at whether this chip might make sense for Lumagen to consider. It does have some nice features.

However, I would like to point out that "3D color space conversion" and "6-axis color control" is not the way to do CMS.

ANY color conversion is "3D." This applies to YCrCr to/from RGB as much as YCbCr to xvYCC. This does not mean they have a 3D palette like the one we use in the Radiance, and in fact their claim of "6-axis-color-control" pretty much tells me they do not.

I believe the only correct way to do CMS is with a linear-gamma RGB color cube palette, and definitely not "6 axis color control." While the 6-axis color can help some, it is the wrong color space. We looked at 6-axis color for our CMS and immediately dropped it once we looked at the math. This has been confirmed to me by calibrators who have tried to use 6-axis-color-control systems to do CMS. They note that while some improvement can be made, the 6-axis approach fails in two regards:

- It is not the right way to adjust color. You need control of R, G, and B to adjust primaries and secondaries, but 6-axis-color-control gives you color and hue.

- It does not keep the primaries correct over intensity changes.

To illustate this, consider a ball and a cube. Walking a "straight line" on the ball is not the same as a "straight line" on the cube. While this is not a perfect analogy, the 6-axis-color-control is the ball and you want a cube (aka RGB).

Still the IDT chip looks interesting. I hope they have overcome some of the issues which caused us to switch from its predecessor "Realta" chip to the "VXP GF9450."

I would love to hear in a nutshell what those issues were.

As I'm sure you know, IDT doesn't have Realta (Geo does) but they do own Reon and the HQV logo. I assume you were analogizing Vida to Realta due to the more similar feature set in Realta.

I wasn't aware that IDT only had Reon. The Reon is a subset of Realta, and as I recall had most of the Realta features. We specifically were considering the Realta verses the VXP GF9450 and that is why I referenced it.

Realta and Geo Semiconductor:
http://www.pr-inside.com/geo-semicon...s-r1315698.htm

Reon, HQV logo, and IDT:
http://www.idt.com/?id=5182

Do I understand you correct ? - If I get ths 5509 and use it with the new JVC X30 which do not have a CMS, I will have CMS controls???

If you get a Lumagen Radiance video processor, you can use the CMS controls in the video processor to calibrate your projector.

Randy

You are referring to the Onkyo receiver, I assume. If so, then no. All it provides is 2-point grayscale, color temp and gamma presets. No CMS at all.