Patent ID: 9542016
Date: 2017-01-10
CPC Classifications: G06F

Claim:
1. An input device for an electronic device, comprising: a user input surface for receiving a force input, the user input surface movably connected to a substrate and configured to move relative to an enclosure of the electronic device; at least one light sensor operably connected to one of the user input surface or the substrate; and a light source in selective communication with the at least one light sensor; wherein when the user input surface is in a first position the at least one light sensor receives a first value of light from the light source; when the user input surface is in a second position the at least one light sensor receives a second value of light from the light source; a difference between the first value of light and the second value of light is calculated by a processor operatively connected to the light source; the calculated difference is correlated to a magnitude of the force input by the processor; and