Patent ID: 6303924
Filing Date: 2001-10-16
Classification: G06F

Abstract:
A computer input system for providing input information to a computer, comprising:a computer input device configured to provide position information based on a position of the computer input device relative to a surface, the computer input device comprising a pattern detector configured to detect a pattern on the surface and a controller coupled to the pattern detector; anda pattern disposed on the surface, the pattern having at least first and second predetermined pattern portions thereon, the controller generating a change event based on the pattern detector switching between detecting the first predetermined pattern portion and detecting the second predetermined pattern portion;wherein the controller is configured to provide relative position information indicative of relative movement of the computer input device relative to the pattern when the pattern detector is detecting the first predetermined pattern portion and absolute position information indicative of an absolute position of the computer input device with respect to the pattern when the pattern detector is detecting the second predetermined pattern portion.