US Patent 8363098 Infrared derived user presence and associated remote control

Methods and apparatuses for reporting user presence associated with orientation and proximity of a user to a display device are disclosed. In one example, image data associated with a head mounted device and one or more infrared light sources is captured and processed to identify the presence of infrared light source objects. A detection status is output based on the presence of infrared light source objects, and the detection status is translated to an associated user presence state.