Patent ID: 6825833
Filing Date: 2004-11-30
Classification: G06F

Abstract:
A capacitive touch sensor comprising:a sensor array including a first plurality of lead lines and a series of sensor bars, the number of sensor bars in the series of sensor bars exceeding the number of lead lines in the first plurality of lead lines, the sensor bars each comprising a first end and a second end, the first end of each sensor bar being connected to one of the first plurality of lead lines, the series of sensor bars being further divided into windows of sensor bars with each window of sensor bars having a corresponding set of lead lines from the first plurality of lead lines, wherein each set of lead lines is distinguishable from each other set of lead lines such that each window of sensor bars is distinguishable from each other window of sensor bars, and wherein distinguishing one window of sensor bars from another window of sensor bars is based on identifying a set of signals present on an identified set of lead lines and comparing the identified set of lead lines to a listing of possible sets of lead lines to determine a matching set of lead lines, wherein the identified set of lead lines only has one possible matching set of lead lines in the listing of possible sets of lead lines.