Apparatus and method for detecting a touch
First Claim
1. An apparatus for detecting touch comprising:
- a touch element comprising a plurality of touch detecting electrodes arranged therein; and
a touch element controller for acquiring detection signals from the touch detection electrodes and determining presence of touch in the touch element,wherein the touch element controller comprises,a receiving unit for receiving the detection signals from the touch detection electrodes and grouping the detection signals into one or more detection signal groups;
a memory for storing a detection signal value limit that represents a maximum value of a detection signal that is indicative that the touch element is touched;
a signal extracting unit for determining for each of the one or more detection signal groups a maximum detection signal value from amongst the detection signals included in the detection signal group;
a calculating unit for calculating an adjustment variable for each of the detection signal groups by deducting the detection signal value limit from the maximum detection signal value in the detection signal group; and
a touch determination unit for;
adjusting each of the detection signals in each of the one or more detection signal groups by deducting a product of the adjustment variable for the detection signal group and an adjustment factor for the detection signal from the detection signal, a magnitude of the adjustment factor for each detection signal based on a magnitude of noise caused by a rear surface touch of a touch detection electrode that generated the detection signal; and
determining presence of touch in the touch element based on whether the adjusted detection signals included in each of the detection signal groups is greater than a detection signal critical value that describes a minimum value of a detection signal that is indicative that the touch element is touched.
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Accused Products
Abstract
There is disclosed an apparatus for detecting touch including a touch element comprising a plurality of touch detecting electrodes arranged therein, a touch element controller for acquiring detection signals from the touch detection electrodes and determining presence of touch in the touch element, wherein the touch element controller includes a receiving unit for receiving the detection signals from the touch detection electrodes and grouping the detection signals into one or more detection signal groups, a memory for storing a detection signal value limit, a signal extracting unit for extracting the maximum detection value out of the detection signal values of the detection for each of the detection signals, a calculating unit for calculating an adjustment variable by deducting the detection signal value limit from the maximum detection signal value for each of the detection groups, and a touch determination unit for determining presence of touch in the touch element, using the adjustment variable.
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Citations
18 Claims
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1. An apparatus for detecting touch comprising:
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a touch element comprising a plurality of touch detecting electrodes arranged therein; and a touch element controller for acquiring detection signals from the touch detection electrodes and determining presence of touch in the touch element, wherein the touch element controller comprises, a receiving unit for receiving the detection signals from the touch detection electrodes and grouping the detection signals into one or more detection signal groups; a memory for storing a detection signal value limit that represents a maximum value of a detection signal that is indicative that the touch element is touched; a signal extracting unit for determining for each of the one or more detection signal groups a maximum detection signal value from amongst the detection signals included in the detection signal group; a calculating unit for calculating an adjustment variable for each of the detection signal groups by deducting the detection signal value limit from the maximum detection signal value in the detection signal group; and a touch determination unit for; adjusting each of the detection signals in each of the one or more detection signal groups by deducting a product of the adjustment variable for the detection signal group and an adjustment factor for the detection signal from the detection signal, a magnitude of the adjustment factor for each detection signal based on a magnitude of noise caused by a rear surface touch of a touch detection electrode that generated the detection signal; and determining presence of touch in the touch element based on whether the adjusted detection signals included in each of the detection signal groups is greater than a detection signal critical value that describes a minimum value of a detection signal that is indicative that the touch element is touched. - View Dependent Claims (2, 3, 4, 5)
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6. An apparatus for detecting touch comprising:
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a display panel for displaying an image; a display panel controller for driving the display panel; a touch element arranged on one surface of the display panel, the touch element comprising a plurality of touch detecting electrodes arranged therein; and a touch element controller for acquiring detection signals from the touch detection electrodes and determining presence of touch in the touch element, wherein the touch element controller comprises, a receiving unit for receiving the detection signals from the touch detection electrodes and grouping the detection signals into one or more detection signal groups; a memory for storing a detection signal value limit that represents a maximum value of a detection signal that is indicative that the touch element is touched; a signal extracting unit for determining for each of the one or more detection signal groups a maximum detection signal value from amongst the detection signals included in the detection signal group; a calculating unit for calculating an adjustment variable for each of the detection groups by deducting the detection signal value limit from the maximum detection signal value in the detection signal group; and a touch determination unit for; adjusting each of the detection signals in each of the one or more detection signal groups by deducting a product of the adjustment variable for the detection signal group and an adjustment factor for the detection signal from the detection signal, a magnitude of the adjustment factor for each detection signal based on a magnitude of noise caused by a rear surface touch of a touch detection electrode that generated the detection signal; and determining presence of touch in the touch element, based on whether the adjusted detection signals included in each of the detection signal groups is greater than a detection signal critical value that describes a minimum value of a detection signal that is indicative that the touch element is touched.
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7. An apparatus for detecting touch comprising:
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a touch element comprising a plurality of touch detection electrodes comprising a plurality of first touch detection electrodes and a plurality of second touch detection electrodes; and a touch element controller for applying a driving signal a predetermined number of the second touch detection electrodes and determining presence of touch in the touch element by acquiring detection signals generated between the first touch detection electrodes and the second touch detection electrodes, wherein the touch element controller comprises, a receiving unit for receiving the detection signals from the first touch detection electrodes; a memory for storing a detection signal value limit that represents a maximum value of a detection signal that is indicative that the touch element is touched; a signal extracting unit for determining for each of the one or more detection signal groups a maximum detection signal value from amongst the detection signals included in the detection signal group; a calculating unit for calculating an adjustment variable for each of the detection signal groups by deducting the detection signal value from the maximum detection signal value in the detection signal group; and a touch determination unit for; adjusting each of the detection signals in each of the one or more detection signal groups by deducting a product of the adjustment variable for the detection signal group and an adjustment factor for the detection signal from the detection signal, a magnitude of the adjustment factor for each detection signal based on a magnitude of noise caused by a rear surface touch of a touch detection electrode that generated the detection signal; and determining presence of touch in the touch element, based on whether the adjusted detection signals included in each of the detection signal groups is greater than a detection signal critical value that describes a minimum value of a detection signal that is indicative that the touch element is touched. - View Dependent Claims (8, 9, 10, 11)
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12. A method for detecting touch comprising:
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generating detection signals and acquiring the detection signals that are grouped into one or more detection signal groups; determining for each of the one or more detection signal groups a maximum detection signal value from amongst the detection signals included in the detection signal group; calculating an adjustment variable for each of the detection signal groups by deducting a detection signal value limit from the maximum detection signal value in the detection signal group; adjusting each of the detection signals in each of the one or more detection signal groups by deducting a product of the adjustment variable for the detection signal group and an adjustment factor for the detection signal from the detection signal, a magnitude of the adjustment factor for each detection signal based on a magnitude of noise caused by a rear surface touch of a touch detection electrode that generated the detection signal; and determining presence of touch in a touch element based on whether the adjusted detection signals included in each of the detection signal groups is greater than a detection signal critical value that describes a minimum value of a detection signal that is indicative that the touch element is touched. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method for detecting touch comprising:
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generating detection signals and acquiring the detection signals that are grouped into one or more detection signal groups; determining for each of the one or more detection signal groups a maximum detection signal value from amongst the detection signals included in the detection signal group; calculating an adjustment variable based on a ratio of a detection signal value limit and the maximum detection signal value, the maximum detection signal value representing a maximum value of a detection signal that is indicative that the touch element is touched; adjusting each of the detection signals in each of the one or more detection signal groups by deducting a product of the adjustment variable and an adjustment factor for the detection signal from the detection signal, a magnitude of the adjustment factor for each detection signal based on a magnitude of noise caused by a rear surface touch of a touch detection electrode that generated the detection signal; and determining presence of touch in a touch element based on the adjusted detection signals and a detection signal critical value that describes a minimum value of a detection signal that is indicative that the touch element is touched.
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Specification