Curved surface input device with normalized capacitive sensing

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.

Dependencies are inferred from the claim text.