I asked Denon technical support about this and after a few days they came back with "it's an inhouse Denon solution." After more research, I found a German web site that reported the video processor as Mediatek. I found that if you do a factory reset, the reset screen is the same screen used by Mediatek. My conclusion: it is a new Mediatek model with features modified/enhanced by Denon. And it does an excellent job too.