Patent ID: 8836647
Filing Date: 2014-09-16
Classification: G06F,H03K

Abstract:
1. A touch sensor comprising: a foldable support layer of an insulating material and a single flexible resistive layer applied to the support layer, wherein the flexible support layer is a single layer of flexible material onto which the flexible resistive layer is applied, the single flexible resistive layer being constituted by a resistive material shaped according to an elongated pattern forming a sequence of touch positions, and the elongated pattern having, at a connectable end of the sequence, a single terminal arranged to be coupled to a sense input of a detecting device, while an open end of the sequence opposite to the connectable end of the sequence remains unconnected, wherein a difference in resistive value between adjacent touch positions increases more than a resistive value that increases proportional to a distance to the single terminal, wherein intermediate sections between subsequent touch areas have one of: increasing lengths and decreasing widths; the detecting device being arranged to detect an active resistance (R the detecting device being arranged to calibrate the touch sensor by requesting that a user touch at least two different touch positions from the sequence of touch positions.