The word “Surface” in Microsoft has come a long way. It started out as a futuristic idea of a coffee table that also functioned as a touch screen computer. Since then it has become a brand than embraced 2-in-1 tablets, a giant whiteboard/screen computer, and, more recently, an all-in-one PC that’s a creative’s wet dream. It might, however, come full circle soon. A recent Microsoft patent filing for an “INTERACTIVE INTEGRATED DISPLAY AND PROCESSING DEVICE” shows the company toying again with the idea of a computer table, but one that uses projectors and sensors instead of more expensive touch screens.