US 11,687,206 B2
Redundant capacitive touch screen having two subgrids of electrodes connected to two separate controllers
Felipe Castillo Buenaventura, Angoulême (FR)
Assigned to Schneider Electric Industries SAS, Rueil Malmaison (FR)
Filed by Schneider Electric Industries SAS, Rueil Malmaison (FR)
Filed on Feb. 15, 2022, as Appl. No. 17/671,674.
Claims priority of application No. 21305201 (EP), filed on Feb. 19, 2021.
Prior Publication US 2022/0269376 A1, Aug. 25, 2022
Int. Cl. G06F 3/044 (2006.01); G06F 3/041 (2006.01)
CPC G06F 3/0446 (2019.05) [G06F 3/0418 (2013.01); G06F 3/041661 (2019.05); G06F 2203/04106 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A touch screen system comprising:
a touch screen;
capacitive grid associated with the touch screen and comprising a first capacitive sub-grid and a second capacitive sub-grid;
a first controller configured to control the first capacitive sub-grid; and
a second controller configured to control the second capacitive sub-grid;
wherein the first controller and the second controller are configured to get respectively a first touch position and a second touch position after a touch input on the touch screen,
wherein the first controller is configured to test a second channel associated with the second controller by sending a stimuli signal to the first capacitive sub-grid from the first controller,
wherein the second controller is configured to test a first channel associated with the first controller by sending a stimuli signal to the second capacitive sub-grid from the second controller, and
wherein at least one of the first controller and the second controller are configured to determine a consolidated touch position by correlation of the first touch position and the second touch position.