INPUT SYSTEM FOR CONTROLLING ELECTRONIC DEVICE

摘要

An electronic device includes a display for displaying data stored on said electronic device; input means; sensing means for sensing the three-dimensional position of the input means relative to said device; and control means for controlling the data displayed on said display in dependence on the three-dimensional position of the input means relative to said device. The input means includes a source of electromagnetic radiation for directing an infrared conical beam onto the display. The sensing means can sense the elliptical eccentricity of the electromagnetic radiation incident on the display to determine the angle at which it strikes the display, and can sense the area of the electromagnetic radiation incident on the display to determine the distance of the input means from the display.

主权项

1. An electronic interface system, comprising:
an input object including a source of electromagnetic radiation; an input area; sensing means positioned at a periphery of said input area; wherein said source of said electromagnetic radiation produces a shaped beam which intersects said input area in a geometric pattern having properties which are a function of at least one of position, distance and orientation of said input object; said sensing means being operative to sense and provide an output indication of at least two of position, orientation, shape and size of said geometric pattern on said input area produced by said input object; and input circuitry receiving said output indication and providing an electronic input representing at least one of two-dimensional position, three-dimensional position and orientation of said input object.