Apparatus and method for manipulating a touch-sensitive display panel
First Claim
1. A coordinate position input apparatus comprising:
- a touch panel for outputting a coordinate data of a middle point when two points are simultaneously touched;
storage means for retaining coordinate position of the two points detected previously;
detection means for detecting a coordinate position of a current middle point; and
calculation means for calculating a coordinate of one of the two touch points assumed to be a moving point by subtracting a coordinate position of a previous fixed point from a current middle point coordinate multiplied by 2.
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Abstract
The present invention enables to easily perform a graphic processing even when a touch panel is used. When a resistance film unit is pressed with a pen or a finger, output voltages associated with the X coordinate and the Y coordinate position are changed and these output voltages are transmitted as the X coordinate data and the Y coordinate data to a touch panel driver. According to the output from the resistance film unit, the touch panel driver generates an event for supply to a GUI handler. The touch panel driver includes a two-point specification detector which detects two point specifications and causes to calculate coordinates of the two points. The GUI handler generates a message corresponding to the GUI according to the event and supplies the message to an application. The GUI handler includes a processing mode modification block which differently interprets the event when a single point is specified and when two points are specified, thereby modifying the graphic processing mode.
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Citations
2 Claims
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1. A coordinate position input apparatus comprising:
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a touch panel for outputting a coordinate data of a middle point when two points are simultaneously touched; storage means for retaining coordinate position of the two points detected previously; detection means for detecting a coordinate position of a current middle point; and calculation means for calculating a coordinate of one of the two touch points assumed to be a moving point by subtracting a coordinate position of a previous fixed point from a current middle point coordinate multiplied by 2. - View Dependent Claims (2)
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Specification