POSITION-DETERMINING INPUT DEVICE AND LIGHT EMITTING PEN

摘要

A position-determining input device is described having a light emitting cursor device (10) and at least two light sensing elements (11 and 13) in a first linear array (12) extending in a first dimension, for providing signals responsive to light incident thereon. The position-determining input device further comprises a processing device (16) coupled to the at least two light sensing elements (11 and 13) for calculating the position of the light emitting cursor device (10) in the first dimension dependent on the signals from the at least two light sensing elements (11 and 13). A light pen is also described.