Patent ID: 8791901
Filing Date: 2014-07-29
Classification: G01S,G06F

Abstract:
1. A system for controlling a graphic on a display screen based on positional data determined for a tracked object, the system comprising: a projector to project a pattern of identifiable radiation onto at least one interior surface of a room in which the display screen is to be disposed, wherein the projector comprises a steerable laser having an emission spectrum comprising the near IR band, wherein the pattern of identifiable radiation comprises a plurality of beacons sequentially projected to mapped locations on the at least one interior surface; a first optical position sensing device disposed in the object to collect the identifiable radiation as reflected from the at least one interior surface, wherein the first optical position sensing device comprises a photodiode to determine a centroid of the reflected radiation; a processor to determine positional data for the object based on the reflected radiation collected by the first optical position sensing device, and determine the plurality of mapped beacon locations, cause the projector to steer the projected radiation for one or more of the plurality of beacons from a first location on the interior surface to a second location on the interior surface, analyze the positional data to compare the distance between the projector and the first location with the distance between the projector and the second location, and select one of the first and second locations as one of the plurality of mapped beacon locations; and a graphics engine to render the graphic based on the object positional data.