Patent ID: 9030441
Filing Date: 2015-05-12
Classification: G06F

Abstract:
1. A touch panel system comprising, a touch panel; and a touch panel controller for processing a signal supplied from the touch panel, the touch panel including (i) a main sensor section for detecting a touch operation performed with respect to the touch panel and (ii) a sub sensor section provided in a surface of the touch panel in which surface the main sensor section is provided, the touch panel controller including a subtracting section for (i) receiving a signal supplied from the main sensor section and a signal supplied from the sub sensor section and (ii) subtracting, from the signal supplied from the main sensor section, the signal supplied from the sub sensor section, the main sensor section being provided with a plurality of sense lines, the sub sensor section being provided with a sub sense line extending along a direction in which the sense lines extend, the subtracting section finding a first difference which is expressed by (Sn+1)−Sn, where n is a nonzero natural number, the first difference corresponding to a difference between (i) a signal of a sense line Sn which is selected from the plurality of sense lines and (ii) a signal of a sense line Sn+1, which is one of two sense lines adjacent to the sense line Sn, the two sense lines being the sense line Sn+1 and a sense line Sn−1 each of which is included in the plurality of sense lines, the subtracting section finding a second difference which is expressed by Sn−(Sn−1), the second difference corresponding to a difference between (i) the signal of the sense line Sn and (ii) a signal of the sense line Sn−1, which is the other one of the two sense lines, the subtracting section finding a third difference, the third difference corresponding to a difference between (i) a signal of the sub sense line and (ii) a signal of a sense line adjacent to the sub sense line which sense line is included in the plurality of sense lines, the touch panel controller including an adding section for adding up the first difference, the second difference, and the third difference.