Patent ID: 9495010
Filing Date: 2016-11-15
CPC Classification: G06F,H03K

Claim Text:
1. An apparatus comprising at least one processor and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to, for an array of capacitive touch sensors with a proximally positioned electrotactile layer, wherein capacitive cross-coupling via the electrotactile layer increases sensor capacitance of the array of capacitive touch sensors, and wherein the electrotactile layer provides haptic feedback to a user and comprises one or more apertures formed in the electrotactile layer, wherein the apertures act to increase the distance between each sensor and a material which forms the electrotactile layer and a respective aperture of the one or more apertures has a location adjacent to a corresponding capacitive touch sensor of the array and is configured to reduce the capacitive cross-coupling, compare the capacitance associated with a corresponding capacitive touch sensor of the array against a respective detection threshold for the corresponding capacitive touch sensor to determine a touch signal depending on whether or not a touch input has occurred at the corresponding capacitive touch sensor by a stylus in capacitive coupling proximity to the corresponding capacitive touch sensor, wherein the respective detection threshold of the corresponding capacitive touch sensor is set to be different than another respective detection threshold of another capacitive touch sensor of the array to inhibit the erroneous generation of a touch input signal at said another capacitive touch sensor caused by the capacitive cross-coupling via the electrotactile layer when the capacitance associated with the corresponding capacitive touch sensor of the array is compared against the respective detection threshold.