Patent ID: 9182843
Filing Date: 2015-11-10
Classification: G06F

Abstract:
1. A touch panel controller comprising: a drive circuit operable to output drive pulse patterns to drive electrodes of a touch panel sequentially; a detection circuit operable to detect signal changes arising on detection electrodes of the touch panel for each drive pulse pattern output by the drive circuit; and a control circuit operable to control the drive circuit and the detection circuit, wherein the drive circuit is capable of changing a pulse frequency of the drive pulse pattern for each drive electrode, the detection circuit is capable of changing a sampling frequency of signal change for each detection electrode, and the control circuit controls, within a predetermined range, a pulse frequency of the drive pulse pattern for each drive electrode, and a sampling frequency of signal change for each detection electrode so as to raise the pulse and sampling frequencies, provided that the predetermined range can be changed depending on a touch position where a touch has been detected by use of a detection signal detected by the detection circuit.