Patent ID: 6770864
Filing Date: 2004-08-03
Classification: G06F

Abstract:
A manual method for entering information into a computer, comprising:(a) providing a narrow and collimated directional light beam from a source operated by hand, (b) providing a receiver which comprises a collection of photodetectors, (c) providing a means for generating a corresponding signal upon incident of said light beam on a said photodetector, (d) providing a means for directing said light beam by hand selectively at said photodetectors to generate said signals in desired sequence, (e) providing a means for processing said signals and transmit the result to said computer without any predetermined delay in time or any extra devices for selection of said signal, whereby desired information can be generated and entered into said computer, (f) providing a means that with a specific photodetector as a lock switch, and an operation logic to achieve the effect of the simultaneous validity of the signals from more than one said photodetectors in any number.