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US 10,248,266 B1Granted
Two-pin buttons
AssigneeCreator Technology B.V.
InventorJiang XiaoPing
Life of this patent
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Abstract
An apparatus and method for detecting a presence of a conductive object on a sensing device, and recognizing three or more button operations performed by the conductive object using two sensing areas of the sensing device. The sensing device may include first, second, and third sensor elements. The third sensor element may include two electrically isolated portions coupled to the first and second sensor elements.
Claims13
A system comprising:
- an operational panel;
- a sensing device disposed in the operational panel, the sensing device comprising:
- one first sensor element;
- one second sensor element;
- a third sensor element, wherein the third sensor element comprises a first surface area and a second surface area that are electrically isolated from each other;
- a first conductive trace;
- a second conductive trace,
- wherein the first surface area of the third sensor element and the second surface area of the third sensor element are different, non-overlapping and coplanar;
- and
- a processing device comprising one first pin and one second pin, and configured to detect an activation of the third sensor element based on measurements of capacitance variations obtained only from the first and second pins,
- wherein the first conductive trace permanently connects the first sensor element and the first surface area of the third sensor element to the first pin of the processing device together,
- wherein the second conductive trace permanently connects the second sensor element and the second surface area of the third sensor element to the second pin of the processing device together.
9 more elements
Dependencies are inferred from the claim text.