Patent ID: 6552698
Filing Date: 2003-04-22
Classification: G02B

Abstract:
A display system comprising:a display unit comprising an optical correlator configured to optically monitor a surface and generate an image output signal in accordance therewith; a navigation engine configured to evaluate said image output signal and a given reference snapshot to determine the position of said display unit, and to output a positional signal representative thereof; a visual display for displaying imagery generated based upon said positional signal; said navigation engine being configured to mathematically cross-correlate said image output signal with said reference snapshot, to determine an offset between said image output signal and said reference snapshot, and to output said positional signal to a connected system; and an omni-directional treadmill for generating an output signal in accordance with the direction and speed of a user's footsteps on the treadmill and for providing the output signal to said navigation engine.