I saw a six color channel video system at SIGGRAPH some years ago in their emerging technology exhibition. I believe the developer may have been Sony, but could

I saw a six color channel video system at SIGGRAPH some years ago in their emerging technology exhibition. I believe the developer may have been Sony, but could not find an online reference. The additional colors were approximately midway the R-B-G colors conventional used. They claim they could display more of the color that people normally are sensitive to. And they had a 6-color monitor side-by-side with conventional showing how nature scenes were more vivid in their system. Of course every part of the system had to double up: video camera, transmission, storage, display. I do not know if subsequent technologies like OLED, Quantum dots, HDF capture much of the color increase of the six channel system. I do not know if the six color system could be used to quantify tetrachromacy.