Patent Document ID: 20110096003
Application ID: 12815150
Patent Status: 0

Claim One:
1. A method for determining the number of objects that are present on a touch sensitive surface, said method comprised of the steps of: 1) providing a plurality of parallel X electrodes disposed on a first layer of a substantially transparent substrate, and a plurality of parallel Y electrodes disposed on a second layer of the substrate, wherein the Y electrodes are co-planar with and orthogonal to the X electrodes; 2) measuring a signal on each of the plurality of X electrodes, proceeding from a first side of the X electrodes to an opposite second side; 3) analyzing the measurements in order to identify objects by determining if any two measurements of adjacent X electrodes show a positive slope in signal strength that is sufficiently large, and which passes from below a threshold value to above the threshold value, so as to indicate the presence of a conductive object; 4) analyzing the measurements in order to identify a negative slope after the positive slope; and 5) repeating steps 3) and 4) for each conductive object identified on the touch sensitive surface while moving towards the second side.