Originally Posted by bcterp
Could you elaborate on why 1080p checkerboard has a resolution of 1358x764? I'm confused by your numbers, checkerboard was designed for and is the only 3D format that these DLP tv's display. The tv will accept other formats but they are always converted to checkerboard for display.
Absolutely. See THIS POST
for a more in-depth reason I use those numbers for checkerboard. The easy explanation is, checkerboard can't really be expressed in the traditional width x height resolution due to its pattern, but 1358x764 most closely represents the number of pixels in a checkerboard pattern at 1080p.
But you are wrong. These tv's do not actually display the 3d in a checkerboard pattern. Checkerboard was initially the only 3d mode they accepted (as well as side/side) but the sets still have to interpolate the checkerboard pattern to a non-checkerboard 1920x1080, and then scale it to 960x1080 for 3d display. Leaving an effective
resolution of roughly
960x764. Side By Side images are already 960x1080, so those are already ready for display at 960x1080. Frame packed images are 1920x1080 and are scaled to 960x1080, which should give the same quality as side/side. Top/bottom images are 1920x540, which must then be scaled to 960x1080, which gives an effective resolution of 960x540.
If the TV actually converts each of those formats to checkerboard before display, that is entirely pointless and adds in an unneeded step (actually 2 extra steps), because it would still need to interpolate a clean 1920x1080 image from the checkerboard image and scale to 960x1080. Instead of converting to checkerboard, scaling directly to 960x1080 seems the most likely option, and I don't realistically see these sets converting the other formats to checkerboard. The converter box does that (because checkerboard used to be the only format supported), but the sets don't need to.
Originally Posted by bcterp
I know that checkerboard is a 1080p image composed of half resolution left and right eye images and are then displayed alternately by the TV. I think we have a confusion of terminology here (I guess on my part), the manner in which morphinapg was referring to checkerboard was different than how Mitsubishi refers to it.http://www.mitsubishi-tv.com/3D/video/09.swf
My main interest is in hearing the math behind his numbers. Not that I think they are wrong, I've just never heard it explained in that manner.
I'm not referring to checkerboard differently than Mitsubishi does. Here is my math:
(16x * 9x) = (1920 * 1080 / 2)
x = 84.8528
16x = 1357.6448
9x = 763.6752
1358 * 764 = 1,037,512 pixels
1920 * 1080 / 2 = 1,036,800 pixels
as you see, it's not exact, but it's pretty close, which is why I say it roughly
describes checkerboard resolution.