Patent ID: 6900793

Claim:
A method for determining a position of a movable member in an electronic input device, within a predefined resolution, comprising the steps of: (a) producing a first signal and a second signal indicative of a position of the movable member, said second signal being offset relative to said first signal; (b) determining a first time for a first signal to cross a threshold level, and a second time for the second signal to cross the threshold level; (c) inverting the first time and the second time to produce a first inverted time and a second inverted time, respectively; (d) determining an inverse minimum time and an inverse maximum time for the first signal to cross the threshold, and an inverse minimum time and an inverse maximum time for the second signal to cross the threshold; (e) determining a first reference value as a function of the inverse minimum time and inverse maximum time for the first signal to cross the threshold; (f) determining a second reference value as a function of the inverse minimum time and inverse maximum time for the second signal to cross the threshold; (g) determining a sector from among a plurality of predefined sectors as a function of the first inverted time, the second inverted time, the first reference value, and the second reference value, wherein the sector defines the position of the movable member within the predefined resolution.