4:4:4

4:4:4 - Chroma Subsampling is 100% reproducing all colors from source (Consoles or PC).

Panasonic plasma (includes latest UT, ST, GT, VT etc) don't has it.

see the complete article on Wikipedia: http://en.wikipedia.org/wiki/Chroma_subsampling
 * a: number of chrominance samples (Cr, Cb) in the first row of J pixels.
 * b: number of (additional) chrominance samples (Cr, Cb) in the second row of J pixels.
 * Alpha: horizontal factor (relative to first digit). May be omitted if alpha component is not present, and is equal to J when present.