Methods and apparatus for performing capacitive touch sensing and proximity detection
First Claim
1. A method for performing capacitive touch sensing and proximity detection, the method comprising the steps of:
- establishing a first connection with an individual electrode of a plurality of individual electrodes in order to receive one or more first signals indicating a state of the individual electrode;
performing a first analysis of the one or more first signals to determine whether to perform a first updating process for an individual electrode baseline value;
establishing second connections with a proximity electrode that comprises multiple ones of the plurality of individual electrodes in order to receive one or more second signals indicating a state of the proximity electrode; and
performing a second analysis on the one or more second signals to determine whether to perform a second updating process for a proximity electrode baseline value, wherein the first analysis and the second analysis are different from each other.
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Abstract
Embodiments include methods and apparatus for performing capacitive touch sensing and proximity detection. Electrode selection circuitry establishes a first connection with an individual electrode of a plurality of individual electrodes in order to receive one or more first signals indicating a state of the individual electrode, and establishes second connections with a proximity electrode that comprises multiple ones of the plurality of individual electrodes in order to receive one or more second signals indicating a state of the proximity electrode. A processing system performs a first analysis on the first signals to determine whether to perform a first updating process for an individual electrode baseline value, and performs a second analysis on the second signals to determine whether to perform a second updating process for a proximity electrode baseline value. In an embodiment, the first analysis and the second analysis are different from each other.
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Citations
20 Claims
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1. A method for performing capacitive touch sensing and proximity detection, the method comprising the steps of:
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establishing a first connection with an individual electrode of a plurality of individual electrodes in order to receive one or more first signals indicating a state of the individual electrode; performing a first analysis of the one or more first signals to determine whether to perform a first updating process for an individual electrode baseline value; establishing second connections with a proximity electrode that comprises multiple ones of the plurality of individual electrodes in order to receive one or more second signals indicating a state of the proximity electrode; and performing a second analysis on the one or more second signals to determine whether to perform a second updating process for a proximity electrode baseline value, wherein the first analysis and the second analysis are different from each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for performing capacitive touch sensing and proximity detection, the method comprising the steps of:
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storing first charging parameters and first analysis parameters associated with performing first charging and sensing processes for an individual electrode of a plurality of individual electrodes; storing second charging parameters and second analysis parameters associated with performing second charging and sensing processes for a proximity electrode that comprises multiple ones of the plurality of individual electrodes, wherein the first charging and sensing operations are configured differently from the second charging and sensing operations; establishing a first connection with the individual electrode; charging the individual electrode in accordance with the first charging parameters; receiving a first signal indicating a state of the individual electrode; determining, based on the first signal, whether to perform a first updating process for an individual electrode baseline value by performing a first analysis that is constrained by the first analysis parameters; establishing second connections with the proximity electrode; charging the proximity electrode in accordance with the second charging parameters; receiving a second signal indicating a state of the proximity electrode; and determining, based on the second signal, whether to perform a second updating process for a proximity electrode baseline value by performing a second analysis that is constrained by the second analysis parameters. - View Dependent Claims (15, 16, 17)
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18. A capacitive touch and proximity sensor system comprising:
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electrode selection circuitry configured to establish a first connection with an individual electrode of a plurality of individual electrodes in order to receive one or more first signals indicating a state of the individual electrode, and to establish second connections with a proximity electrode that comprises multiple ones of the plurality of individual electrodes in order to receive one or more second signals indicating a state of the proximity electrode; and a processing system, operatively coupled with the electrode selection circuitry, and configured to perform a first analysis on the one or more first signals to determine whether to perform a first updating process for an individual electrode baseline value, and to perform a second analysis on the one or more second signals to determine whether to perform a second updating process for a proximity electrode baseline value, wherein the first analysis and the second analysis are different from each other. - View Dependent Claims (19, 20)
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Specification