US 11,687,206 B2 · Redundant capacitive touch screen having two subgrids of electrodes connected to two separate controllers

Abstract

A touch screen system includes a touch screen; a capacitive grid associated with the touch screen and including 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 first capacitive sub-grid. 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. The first controller and the second controller also are configured to test respectively a second channel associated with the second controller and a first channel associated with the first controller by sending a stimuli signal respectively to the first capacitive sub-grid and to the second capacitive sub-grid. 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.

Claims14

Dependent claims

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.

6 more elements

A method for determining a position of a touch input on a touch screen associated with a capacitive grid, the capacitive grid comprising a first capacitive sub-grid and a second capacitive sub-grid, wherein the first capacitive sub-grid is controlled by a first controller and the second capacitive sub-grid is controlled by a second controller, the method comprising:

getting a first touch position and a second touch position respectively by the first controller and the second controller after a touch input on the touch screen,
testing a second channel associated with the second controller by sending a stimuli signal to the first capacitive sub-grid by the first controller,
testing a first channel associated with the first controller by sending a stimuli signal to the second capacitive sub-grid by the second controller, and
determining a consolidated touch position by correlation of the first touch position and the second touch position by at least one of the first controller and the second controller.

1 more element

Dependencies are inferred from the claim text.

Redundant capacitive touch screen having two subgrids of electrodes connected to two separate controllers

Life of this patent

Redundant capacitive touch screen having two subgrids of electrodes connected to two separate controllers

Life of this patent

Abstract

Claims14