Device and Method for Parallel-scanning Differential Touch Detection

A device for differential touch detection, comprising:

• a first selecting unit for simultaneously receiving signals of a plurality of adjacent first axial wires of a touch panel, and outputting the signals of these adjacent first axial wires according to a first selecting signal in a time-sharing manner S1 times, wherein the first selecting unit includes a plurality of outputs and each output outputs next of the signals of the adjacent first axial wires each time after the first time of output, wherein S1≧2 and S1 is a natural number;
• a first differential unit for receiving the signals of the adjacent first axial wires output from the first selecting unit, and subtracting two adjacent signals of the signals of the adjacent first axial wires from one another to obtain X results, wherein X≧1 and X is a natural number;
• and
• a detection controlling unit for receiving the X results and controlling the first selecting signal.

A method for differential touch detection, comprising:

• a first selecting unit simultaneously receiving signals of a plurality of adjacent first axial wires of a touch panel, and outputting the signals of these adjacent first axial wires according to a first selecting signal in a time-sharing manner S1 times, wherein the first selecting unit includes a plurality of outputs and each output outputs next of the signals of the adjacent first axial wires each time after the first time of output, wherein S1≧2 and S1 is a natural number;
• a first differential unit receiving the signals of the adjacent first axial wires output from the first selecting unit, and subtracting two adjacent signals of the signals of the adjacent first axial wires from one another to obtain X results, wherein X≧1 and X is a natural number;
• and
• a detection controlling unit receiving the X results and controlling the first selecting signal.