CURVED SURFACE INPUT DEVICE WITH NORMALIZED CAPACITIVE SENSING
First Claim
1. An input device comprising:
- multiple sensor elements comprising a first sensor element and a second sensor element, anda controller configured to detect an input by performing a sensing operation associated with each of the multiple sensor elements, the sensing operation associated with the first sensor element being performed with a first sensitivity and the sensing operation associated with the second sensor element being performed with a second sensitivity.
1 Assignment
0 Petitions
Accused Products
Abstract
A curved surface input device with normalized capacitive sensing is disclosed. The input device can normalize capacitive sensing through an overlay having a varying thickness, such as an overlay with a curved surface. The capacitive sensing normalization can be implemented in software, hardware or a combination of software and hardware. A software implementation for normalizing capacitive sensing can comprise adjusting the sensitivity of a sensing operation associated with different sensor elements of the input device. A hardware implementation for normalizing capacitive sensing can comprise adjusting a hardware configuration of the input device associated with one or more physical parameters that can influence the capacitive sensitivity of the sensor elements, such as an area of the sensor elements, a distance between the sensor elements and other conductive input device elements (such as a ground plane), and a dielectric constant associated with the overlay.
-
Citations
21 Claims
-
1. An input device comprising:
-
multiple sensor elements comprising a first sensor element and a second sensor element, and a controller configured to detect an input by performing a sensing operation associated with each of the multiple sensor elements, the sensing operation associated with the first sensor element being performed with a first sensitivity and the sensing operation associated with the second sensor element being performed with a second sensitivity. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A method comprising:
-
providing multiple sensor elements, performing a calibration operation for each of the multiple sensor elements to establish a baseline sense level, and determining a threshold sense level for each of the multiple sensor elements based on the baseline sense level. - View Dependent Claims (9, 10, 11, 12)
-
-
13. An electronic device comprising:
-
an input device comprising multiple sensor elements, a surface covering the multiple sensor elements, the surface comprising a curvature, and a controller configured to adjust a sensitivity of a sensing operation for each of the multiple sensor elements to compensate for the curvature of the surface. - View Dependent Claims (14, 15, 16)
-
-
17. An electronic device comprising:
-
an input device comprising multiple sensor elements, and an overlay covering the multiple sensor elements, the overlay comprising a varying thickness, and the input device comprising a hardware configuration arranged to normalize capacitive sensing associated with the multiple sensor elements through the varying thickness of the overlay. - View Dependent Claims (18, 19, 20, 21)
-
Specification