| 摘要 |
<p>The present invention relates to a touch input system, an image displaying device, and a touch detecting method capable of improving the extraction efficiency and the accuracy of a touch sensing signal by performing demodulation with the same signal by copying a resonance receiving signal generated by a stylus pen. The present invention comprises a sensor panel which comprises first channels and second channels which are intersected to each other; a touch sensing unit which converts analog type touch sensing signals inputted through the first channels or the second channels and generates/outputs digital touch information by performing the demodulation of the digital touch signals; a touch control unit which controls the driving of the touch sensing unit and generates/outputs touch position information by using the digital touch information inputted from the touch sensing unit; and a power unit which generates power signals necessary for the driving of the sensor panel, the touch sensing unit, and the touch control unit and supplies the power signals to the sensor panel, the touch sensing unit, and the touch control unit.</p> |
