US Patent 10321104 Multi-modal projection display

A multi-modal display device is presented. The display device has a shell having an internal projection screen and an opening, a projector emitting a projection beam from inside the shell. There is an optical guide adjusting a position of the projector to aim the projection beam at either the internal projection screen or the opening. A processor coupled to the optical guide may select a display position, wherein different display positions are associated with different display area sizes. The method includes determining a distance between a projector and a user, and automatically selecting a display mode based on the distance.