Patent 11604542 was granted and assigned to Panasonic on March, 2023 by the United States Patent and Trademark Office.
In a display system, a display device includes a plurality of gate lines, a plurality of source lines and a plurality of common electrodes used for both image display and touch detection. A first acquirer acquires a specific frequency to be avoided. A second acquirer acquires a frequency of a control signal used to control the display device. When the specific frequency and the frequency of the control signal satisfy a changing condition, a changing unit changes the frequency of the control signal.