Patent ID: 6359616
Filing Date: 2002-03-19
Classification: G06F

Abstract:
A coordinate input apparatus comprising:coordinate detecting device installed on a case so as to be exposed through a window provided on said case, said coordinate detecting device being provided with an operating surface having a predetermined size that is operated with a coordinate indicating means, a position indicated by said coordinate indicating means on said operating surface being outputted as input coordinate data about two-dimensional coordinates; a storage device for storing range coordinate data about two-dimensional coordinates indicative of a rectangular coordinate input range in which a coordinate input operation is performed by said coordinate indicating means on said operating surface; a data analyzing device for changing said range coordinate data according to said input coordinate data inputted by said coordinate indicating means; a data correcting device for transforming, based on said range coordinate data, said input coordinate data into display coordinate data corresponding to coordinates on a display screen of an image display device; and a display control device for displaying said display coordinate data to said display screen of said image display device, wherein said range coordinate data is comprised of minimum coordinate data and maximum coordinate data indicative of said rectangular coordinate input range, wherein, if said input coordinate data is smaller than said minimum coordinate data, said data analyzing device replaces the minimum coordinate data of said range coordinate data with said input coordinate data to generate a revised coordinate data range, wherein, if said input coordinate data is larger than said maximum coordinate data, said data analyzing device replaces the maximum coordinate data of said range coordinate data with said input coordinate data to generate a revised coordinate data range, and wherein, if said range coordinate data has been replaced with said input coordinate data to generate a revised coordinate range, said data correcting device transforms said input coordinate data into display coordinate data by comparing the range coordinate data with the revised coordinate data range.