Patent ID: 6714310
Filing Date: 2004-03-30
Classification: G01B,G06F

Abstract:
A coordinate input apparatus in which light from a designating tool is applied to a prescribed position on a coordinate input screen to produce a light spot and coordinates corresponding to the light spot are generated, the apparatus comprising:a plurality of sensing means, arranged in one coordinate axis, for sensing the light spot; correction means for correcting results of sensing from each of said plurality of sensing means; concatenation means for concatenating data that has been corrected by said correction means; and output means for outputting coordinate values corresponding to the light spot based upon the data concatenated by said concatenation means; wherein portions of areas from which said plurality of sensing means sense light overlap, wherein said plurality of sensing means comprises first sensing means and second sensing means, and wherein said correction means corrects the results of sensing from each of said plurality of sensing means based upon inclination of said second sensing means relative to said first sensing means.