Patent ID: 8902158

Claim:
A computer-implemented method for presenting display frames projected using a first handheld projector, the method comprising: generating a first display frame providing a visible image to project from the first handheld projector and at least a first a first tracking signal to composite with the first display frame; projecting the first display frame composited with at least the first tracking signal onto a display surface; detecting at least a second tracking signal within a field of view of a sensor on the first handheld projector, wherein the second tracking signal is projected on the display surface by a second handheld projector; determining, from the first and second tracking signals, a relative position of the first display frame and a second display frame; generating one or more subsequent display frames to project from the first handheld projector, wherein each subsequent display frame includes at least the first tracking signal, and wherein the one or more subsequent display frames are responsive, at least in part, to the relative positions of the first and second tracking signals; and generating, by the first handheld projector, at least a third tracking signal to composite with the first display frame, wherein the third tracking signal communicates a program event state to the second handheld projector.