Patent ID: 8600688

Claim:
An electronic device, comprising: a first capacitive sensing pad configured to receive first user input; wherein the first capacitive sensing pad is configured to generate a first signal based on the first user input, wherein the first signal indicates a size of an area of the first capacitive sensing pad in which the first user input is received; a second capacitive sensing pad configured to receive second user input, wherein the second capacitive sensing pad is differently sized than the first capacitive sensing pad; wherein the second capacitive sensing pad is configured to generate a second signal based on the second user input, wherein the second signal indicates a size of an area of the second capacitive sensing pad in which the second user input is received; processing circuitry, wherein the processing circuitry comprises a first input coupled to the first capacitive sensing pad and the second capacitive pad; wherein the first input is configured to additively receive the first signal from the first capacitive sensing pad and the second signal from the second capacitive sensing pad; wherein, based on the first input, the processing circuitry is configured to determine the locations of the user inputs on the first and second capacitive pads.