Patent ID: 6791700
Filing Date: 2004-09-14
Classification: G06F

Abstract:
A coordinate inputting/detecting apparatus for optically detecting a position of a designating device inserted into an at least substantially flat two-dimensional coordinate inputting/detecting area of the apparatus, comprising:a coordinates determining device configured to determine two-dimensional coordinates of the designating device in the coordinate inputting/detecting area at a predetermined time interval; an insertion/non-insertion state detecting device configured to detect an insertion/non-insertion state of the designating device relative to the coordinate inputting/detecting area; a vectorization device configured to convert information of a direction and a length of a change between two two-dimensional coordinates sequentially detected by the coordinates determining device at the predetermined time interval into a coordinates vector value; and a sweeping up processing device configured to process, if a change of a first coordinates vector value, obtained by the vectorization device when the non-insertion state of the designating device is detected at a first two-dimensional coordinates by the insertion/non-insertion state detecting device, from a second coordinates vector value, obtained by the vectorization device at a second two-dimensional coordinates immediately before the first two-dimensional coordinates, is not greater than a predetermined value, a drawing line connecting between the second two-dimensional coordinates and a third two-dimensional coordinates immediately before the second two-dimensional coordinates so as to be reduced by a predetermined length.