ABSOLUTE AND RELATIVE POSITIONING SENSOR FUSION IN AN INTERACTIVE DISPLAY SYSTEM

摘要

An interactive display system including a wireless pointing device, and positioning circuitry capable of determining absolute and relative positions of the display at which the pointing device is aimed. An error value between the absolute position and an estimated or actual relative position at the point in time of the absolute position is determined, and a compensation factor is determined from this error value that is applied to subsequent relative positioning results.