Patent ID: 6255604
Filing Date: 2001-07-03
Classification: G06F

Abstract:
A coordinate detecting device provided with a panel composed of two conductive films, comprising:discrimination means for discriminating whether two points are simultaneously depressed on said panel;retaining means adapted, in case said discrimination means identifies that a point is depressed on said panel, to retain a coordinate of the depressed point as latest coordinate data;obtaining means adapted, in case said discrimination means identifies that two points are simultaneously depressed on said panel, to obtain coordinate data based on the coordinate data retained by said retaining means and potentials in x and y directions obtained from said conductive films; andoutput means for outputting the coordinate data retained by said retaining means and the coordinate data obtained by said obtaining means as the coordinate data of the simultaneously depressed two points,wherein said obtaining means includes:switch means for switching a direction of application of a voltage to said conductive films, based on the coordinate data retained in said retaining means;calculation means for calculating the coordinate data based on the coordinate data retained in said retaining means and the potentials in the x and y directions obtained from said conductive films; andconversion means for converting the coordinate data, calculated by said calculation means, based on the direction of application of the voltage controlled by said switch means.