Abstract: A shape of a code identifying body as seen from a touch panel surface is more accurately detected not by correcting a ghost on a controller side of a touch-sensor system or distinguishing the ghost from a real touch by a sensor unit but by rectifying the ghost on the code identifying body side and increasing a detection signal. An identifying body 1 for a touch-sensor system includes a conductive pattern unit 2 in which a conductive pattern in a prescribed shape is arranged to be opposed to a screen of a touch panel of a touch-sensor system 4 and a virtual grounding circuit unit 3 that has an equivalent function to a ground circuit for the conductive pattern, is installed on a touch panel surface of the touch-sensor system 4 that enables a position input operation of an indicating body, and is used for user authentication and so forth.

Abstract: A touch panel controller (1) includes a first capacitance distribution calculation unit (15) that outputs a first signal value map which indicates a distribution of signal values in a touch panel (10) and a first capacitance distribution correction unit (16) that configures a broader area than an area in which changes in the signal values due to an input operation on the touch panel occur on the first signal value map, performs correction calculation that cancels the changes in the signal values due to external factors which are different from the input operation on the touch panel in the region, and generates a second signal value map.

Abstract: A touch panel controller (1) includes a first capacitance distribution calculation unit (15) that outputs a first signal value map which indicates a distribution of signal values in a touch panel (10) and a first capacitance distribution correction unit (16) that configures a broader area than an area in which changes in the signal values due to an input operation on the touch panel occur on the first signal value map, performs correction calculation that cancels the changes in the signal values due to external factors which are different from the input operation on the touch panel in the region, and generates a second signal value map.