Patent ID: 8619056

Claim:
A ghost resolution sensing method for a capacitive touch panel suffering a ghost phenomenon involving two points on the capacitive touch panel corresponding to a same coordinate in a first direction, the ghost resolution method comprising: (A) scanning traces in two directions to determine if ghost points exist; (B) concurrently charging a trace in the first direction and a trace in a second direction at the first point; (C) sensing a first capacitance value from the charged trace in the first direction and a second capacitance value from the charged trace in the second direction at the first point; (D) summing up the first and second capacitance values to obtain a first summed-up capacitance value; (E) concurrently charging a trace in the first direction and a trace in the second direction at the second point; (F) sensing a third capacitance value from the charged trace in the first direction and a fourth capacitance value from the charged trace in the second direction at the second point; (G) summing up the third and fourth capacitance values to obtain a second summed-up capacitance value; and (H) recognizing a real point from the two points according to the first and second summed-up capacitance values; wherein the step (H) comprises: comparing the first summed-up capacitance value with the second summed-up capacitance value; selecting the first point as the real point if the first summed-up capacitance value is greater than the second summed-up capacitance value; and selecting the second point as the real point if the first summed-up capacitance value is less than the second summed-up capacitance value.