Image sensing operator input device

摘要

There is disclosed a computer input device (42) that detects images on a surface (116). The computer input device (42) generates a data structure that is passed from the computer input device (42) to the computer (20), comprising a first data portion indicative of movement of the input device relative to the surface (116), a second data portion indicative of a press of an actuation button, and a third data portion indicative of whether the input device has detected a first or second predetermined pattern on the surface (116).