| US 7,616,195 B2 | ||
| One dimensional and three dimensional extensions of the slide pad | ||
| Todd S. Sachs, Palo Alto, Calif. (US) | ||
| Assigned to Avago Technologies ECBU IP (Singapore) Pte. Ltd., Singapore (Singapore) | ||
| Filed on Feb. 04, 2005, as Appl. No. 11/51,107. | ||
| Prior Publication US 2006/0176270 A1, Aug. 10, 2006 | ||
| Int. Cl. G06F 3/044 (2006.01) | ||
| U.S. Cl. 345—174 [345/156; 345/173; 178/18.01; 178/183.03; 178/18.06] | 11 Claims |
| 1. A method for providing three-dimensional motion inputs to a device, comprising:
measuring characteristics between a plurality of sense electrodes opposite a reference electrode on a movable pad;
determining three-dimensional displacements of the movable pad from the characteristics;
determining the three-dimensional motion inputs from the three-dimensional displacements of the movable pad; and
providing the three-dimensional motion inputs to the device;
wherein said measuring characteristics comprises measuring capacitances as follows:
driving high a first sense electrode and a second sense electrode;
driving low a third sense electrode and a fourth sense electrode; and
measuring a capacitance at the reference electrode.
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