CAPACITIVE SENSING WITH COMBINATORIAL SENSOR LAYOUT
First Claim
1. A method for determining capacitance, said method comprising:
- employing a set of sensor electrodes, said set of sensor electrodes comprising at least three sensor electrodes, wherein a first sensor electrode of said set of sensor electrodes meets a second sensor electrode of said set of sensor electrodes at a first activation region of a plurality of activation regions, wherein said first sensor electrode meets a third sensor electrode of said set of sensor electrodes at a second activation region of said plurality of activation regions, and wherein said second sensor electrode meets said third sensor electrode at a third activation region of said plurality of activation regions;
transmitting with said third sensor electrode while receiving first indicia with said first and said second sensor electrodes;
transmitting with said first sensor electrode while receiving second indicia with said second sensor electrode; and
determining capacitances associated with said first, said second and said third activation regions using at least said first indicia and said second indicia.
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Accused Products
Abstract
In a method for determining capacitance, a set of sensor electrodes is employed. The set of sensor electrodes comprises at least three sensor electrodes including first, second, and third sensor electrodes. The first sensor electrode meets the second sensor electrode at a first activation region of a plurality of activation regions. The first sensor electrode meets the third sensor at a second activation region of the plurality of activation regions. The second sensor electrode meets the third sensor electrode at a third activation region of the plurality of activation regions. The third sensor electrode transmits while first indicia are received with the first and the second sensor electrodes. The first sensor electrode transmits while second indicia are received with the second sensor electrode. Capacitances associated with the first, second and third activation regions are determined using at least the first indicia and second indicia.
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Citations
23 Claims
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1. A method for determining capacitance, said method comprising:
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employing a set of sensor electrodes, said set of sensor electrodes comprising at least three sensor electrodes, wherein a first sensor electrode of said set of sensor electrodes meets a second sensor electrode of said set of sensor electrodes at a first activation region of a plurality of activation regions, wherein said first sensor electrode meets a third sensor electrode of said set of sensor electrodes at a second activation region of said plurality of activation regions, and wherein said second sensor electrode meets said third sensor electrode at a third activation region of said plurality of activation regions; transmitting with said third sensor electrode while receiving first indicia with said first and said second sensor electrodes; transmitting with said first sensor electrode while receiving second indicia with said second sensor electrode; and determining capacitances associated with said first, said second and said third activation regions using at least said first indicia and said second indicia. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for providing a capacitance sensing device, said method comprising:
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providing a set of sensor electrodes, said set of sensor electrodes comprising at least three sensor electrodes, wherein a first sensor electrode of said set of sensor electrodes meets a second sensor electrode of said set of sensor electrodes at a first activation region of a plurality of activation regions, wherein said first sensor electrode meets a third sensor electrode of said set of sensor electrodes at a second activation region of said plurality of activation regions, and wherein said second sensor electrode meets said third sensor electrode at a third activation region of said plurality of activation regions; providing a plurality of sensor channels; ohmically coupling a first sensor channel of said plurality of sensor channels to said first sensor electrode; ohmically coupling a second sensor channel of said plurality of sensor channels to said second sensor electrode; and ohmically coupling a third sensor channel of said plurality of sensor channels to said third sensor electrode, wherein said first sensor channel is configured to both transmit and receive electrical signals, wherein said device is configured such that first indicia for sensing capacitances associated with said plurality of activation regions is received with said first and second sensor channels while said third sensor channel transmits and wherein said device is further configured such that second indicia for sensing capacitances associated with said plurality of activation regions is received with said second sensor channel while said first sensor channel transmits. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A capacitive sensing device comprising:
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a set of sensor electrodes comprising; a first sensor electrode of said set of sensor electrodes; a second sensor electrode of said set of sensor electrodes, wherein said first sensor electrode meets said second sensor electrode at a first activation region of a plurality of activation regions; and a third sensor electrode of said set of sensor electrodes, wherein said first sensor electrode meets said third sensor electrode at a second activation region of said plurality of activation regions, and wherein said second sensor electrode meets said third sensor electrode at a third activation region of said plurality of activation regions; and a controller, said controller comprising a plurality of sensor channels, wherein a first sensor channel of said plurality of sensor channels is ohmically coupled to said first sensor electrode, a second sensor channel of said sensor plurality of channels is ohmically coupled to said second sensor electrode, and a third sensor channel of said plurality of sensor channels is ohmically coupled to said third sensor electrode, wherein said first sensor channel is configured to both transmit and receive electrical signals, and wherein the controller is configured such that first indicia for sensing capacitances associated with said plurality of activation regions is received with said first and second sensor channels while said third sensor channel transmits and wherein the controller is further configured such that second indicia for sensing capacitances associated with said plurality of activation regions is received with said second sensor channel while said first sensor channel transmits. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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Specification