Touch Profiling on Capacitive-Touch Screens
First Claim
1. A machine-implemented method of determining a type of interaction made with capacitive-touch screen comprising:
- determining, using an electronic device, the capacitance sensor with the largest sensed capacitance in a group of capacitance sensors, wherein the group of capacitance sensors are located on the capacitive-touch screen;
wherein the capacitive-touch screen is located on an electronic device;
determining a parametric surface from the value of the largest sensed capacitance and the values of the sensed capacitances in the group of capacitance sensors;
determining coordinates (x0, y0, z0) for an interpolated peak capacitance from the parametric surface,determining a curvature K at the interpolated peak from the parametric surface; and
determining an orientation θ
at the interpolated peak capacitance from the parametric surface;
wherein the type of interaction made with the capacitive-touch screen is determined by the interpolated peak capacitance, the curvature K and the orientation θ
.
1 Assignment
0 Petitions
Accused Products
Abstract
An embodiment of the invention provides a method and apparatus for determining what type of interaction is made with a capacitive touch screen. A capacitance sensor with the largest sensed capacitance in a group of capacitance sensors is determined. Next, a parametric surface is determined from the value of the largest sensed capacitance and the values of the sensed capacitances in the group of capacitance sensors. From the parametric surface, an interpolated peak capacitance, a curvature K at the interpolated peak and an orientation θ at the interpolated peak are determined. Based on the interpolated peak capacitance, the curvature K and the orientation θ, the type of interaction made with the capacitive-touch screen is identified.
17 Citations
21 Claims
-
1. A machine-implemented method of determining a type of interaction made with capacitive-touch screen comprising:
-
determining, using an electronic device, the capacitance sensor with the largest sensed capacitance in a group of capacitance sensors, wherein the group of capacitance sensors are located on the capacitive-touch screen;
wherein the capacitive-touch screen is located on an electronic device;determining a parametric surface from the value of the largest sensed capacitance and the values of the sensed capacitances in the group of capacitance sensors; determining coordinates (x0, y0, z0) for an interpolated peak capacitance from the parametric surface, determining a curvature K at the interpolated peak from the parametric surface; and determining an orientation θ
at the interpolated peak capacitance from the parametric surface;wherein the type of interaction made with the capacitive-touch screen is determined by the interpolated peak capacitance, the curvature K and the orientation θ
. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. An electronic device comprising:
-
a peak finding circuit configured to determine a capacitance sensor with the largest sensed capacitance in a group of capacitance sensors, wherein the group of capacitance sensors are located on a capacitive-touch screen;
wherein the capacitive-touch screen is located on the electronic device;a conic surface modeling circuit to determine a parametric surface from the value of the largest sensed capacitance and the values of the sensed capacitances in the group of capacitance sensors; a peak information derivation circuit to determine coordinates (x0, y0, z0) for an interpolated peak capacitance from the parametric surface, a curvature K at the interpolated peak capacitance from the parametric surface and an orientation θ
at the interpolated peak capacitance from the parametric surface;wherein the type of interaction made with the capacitance-touch screen is determined by the interpolated peak capacitance, the curvature K and the orientation θ
. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
-
Specification