Patent ID: 6563491
Filing Date: 2003-05-13
Classification: G06F

Abstract:
A coordinate input apparatus comprising:a coordinate input face where coordinates are inputted by a pointing unit, a detection unit configured to periodically detect at least two angles formed by straight lines connecting a point corresponding to said pointing unit on said coordinate input face and reference points on said coordinate input face and a reference line on the coordinate input face, an angle storing unit configured to store angles detected by the detection unit during an immediately earlier cycle among angles periodically detected, an angle choosing unit configured to compare the angles detected during the immediately earlier cycle with angles detected during a present cycle, and to choose those angles determined during the present cycle that have a value most adjacent to a value of the angles detected during the immediately earlier cycle if a number of the angles detected during the present cycle is greater than a number of the angles detected during the immediately earlier cycle, and a coordinate detection unit configured to detect coordinates inputted by said pointing unit based on the angles chosen by said angle choosing unit.