Patent ID: 8368657

Claim:
An input sensor for an electronic device, comprising: a touch sensor panel having a first dimension and a second dimension; a plurality of electrically-isolated electrodes distributed across said touch sensor panel, wherein said plurality of electrodes comprises a plurality of regional electrodes and at least four local electrodes; wherein each of said plurality of regional electrodes covers a corresponding one of a plurality of regions of said touch sensor panel, wherein each of said plurality of regional electrodes extends no more than half of said first dimension and no more than half of said second dimension, and wherein a touch anywhere along said touch sensor panel is detected by at least one of said plurality of regional electrodes; wherein each of said at least four local electrodes comprises a plurality of electrically-connected pads distributed within said plurality of regional electrodes so that each of said plurality of regions covered by a regional electrode includes at least one pad of each of said at least four local electrodes, wherein a touch anywhere across said touch sensor panel is detected by at least one of said at least four local electrodes; and a sensor circuit which determines a value for each of said plurality of electrodes indicating relative change, and which compares relative values of said plurality of electrodes to identify a location of a touch of said touch sensor panel.