APPARATUS EQUIPPED WITH AN OPTICAL KEYBOARD AND OPTICAL INPUT DEVICE

摘要

In an apparatus comprising an optical keyboard (140) and an optical input device (182,186) controlled by a moving object and wherein the input device comprises at least one diode laser and photo diode (182) for supplying at least one measuring beam (184) to a device window (186) and for receiving radiation reflected by the object placed on the window, the input device is integrated in the keyboard such that the measuring beam (184) is guided via the positions of the keys (125) to the window (186). In this way the optical the keyboard is substantially simplified and the reliability of the output signal of the input device increased.