Base on the patent files. NX is a kind of device adding power to the WiiU. They got display device on it. They can be mobile. I think they are a kit of 3 or 4 little projector. Bluetooth. You fix them in a room top corner. When you got 3 or 4 litte projector set correctly, they send ray or image.. All those details fix perfectly with the patent. And the result ? Home Holographic System.