TOUCH ACQUISITION IN A PROJECTED CAPACITIVE TOUCH SCREEN SYSTEM
First Claim
1. Apparatus, comprising:
- a capacitive touch panel including a plurality of first electrodes extending in first direction and a plurality of second electrodes extending in a second direction, the first and second electrodes intersecting each other;
wherein the plurality of first electrodes includes transmit first electrodes and receive first electrodes, the transmit first electrodes and receive first electrodes being interleaved;
wherein the plurality of second electrodes includes transmit second electrodes and receive second electrodes, the transmit second electrodes and receive second electrodes being interleaved;
transmit circuitry coupled to the transmit first electrodes and transmit second electrodes; and
receive circuitry coupled to the receive first electrodes and receive second electrodes.
1 Assignment
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Accused Products
Abstract
A capacitive touch panel includes first electrodes extending in first direction and second electrodes extending in a second (intersecting) direction. The first electrodes include parallel extending transmit first electrodes and receive first electrodes that are interleaved with each other. The second electrodes include parallel extending transmit second electrodes and receive second electrodes that are interleaved with each other. Transmit circuitry is coupled to the transmit first electrodes and transmit second electrodes. Receive circuitry coupled to the receive first electrodes and receive second electrodes. Processing circuitry controls activation of the transmit and receive circuitry in a manner which supports the making of adjacent line capacitance measurements and intersecting line capacitance measurements. The capacitance measurements are processed to identify and determine location of touches made on or near the capacitive touch panel.
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Citations
22 Claims
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1. Apparatus, comprising:
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a capacitive touch panel including a plurality of first electrodes extending in first direction and a plurality of second electrodes extending in a second direction, the first and second electrodes intersecting each other; wherein the plurality of first electrodes includes transmit first electrodes and receive first electrodes, the transmit first electrodes and receive first electrodes being interleaved; wherein the plurality of second electrodes includes transmit second electrodes and receive second electrodes, the transmit second electrodes and receive second electrodes being interleaved; transmit circuitry coupled to the transmit first electrodes and transmit second electrodes; and receive circuitry coupled to the receive first electrodes and receive second electrodes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method, comprising:
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controlling operation of a capacitive touch panel including a plurality of first electrodes extending in first direction and a plurality of second electrodes extending in a second direction, the first and second electrodes intersecting each other; wherein the plurality of first electrodes includes transmit first electrodes and receive first electrodes, the transmit first electrodes and receive first electrodes being interleaved; wherein the plurality of second electrodes includes transmit second electrodes and receive second electrodes, the transmit second electrodes and receive second electrodes being interleaved; wherein controlling comprises; activating transmit circuitry coupled to the transmit first electrodes and transmit second electrodes; and activating receive circuitry coupled to the receive first electrodes and receive second electrodes. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification