Device and method for parallel-scanning differential touch detection
First Claim
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1. A device for parallel-scanning differential touch detection, comprising:
- a differential unit for generating a plurality of first outputs based on a plurality of first inputs in each scan of total i scans, wherein the kth first output in the jth scan of the total i scans is the (i*(k−
1)+j)th first output in a continuous plurality of first outputs, wherein i≧
2, j≧
1, k≧
1, and i, j, k are natural numbers; and
a first selecting unit operatively coupled to a plurality of sensors of a touch panel for providing the first inputs, wherein each of the first inputs is operatively coupled to one of i continuous of the plurality of sensors in the total i scans.
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Abstract
A method for parallel-scanning differential touch detection is disclosed herein. The method includes generating a plurality of first outputs by a differential unit according to a plurality of first inputs provided by a plurality of sensors of a touch panel in each scan of total i scans, herein, the kth first output in the jth scan of the total i scans is the (i*(k−1)+j)th output in the continuous first outputs, i≧2, j≧1, k≧1, and i, j, k are natural numbers. Wherein, the differential unit has a plurality of subtractors and the inputs of the subtractors are connected in series. By doing so, the noises between a touch panel and a display can be eliminated.
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Citations
38 Claims
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1. A device for parallel-scanning differential touch detection, comprising:
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a differential unit for generating a plurality of first outputs based on a plurality of first inputs in each scan of total i scans, wherein the kth first output in the jth scan of the total i scans is the (i*(k−
1)+j)th first output in a continuous plurality of first outputs, wherein i≧
2, j≧
1, k≧
1, and i, j, k are natural numbers; anda first selecting unit operatively coupled to a plurality of sensors of a touch panel for providing the first inputs, wherein each of the first inputs is operatively coupled to one of i continuous of the plurality of sensors in the total i scans. - View Dependent Claims (2, 3, 4, 5)
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6. A device for parallel-scanning differential touch detection, comprising:
a differential unit for generating a plurality of first outputs based on a plurality of first inputs provided by a plurality of sensors of a touch panel in each scan of total i scans, wherein the kth first output in the jth scan of the total i scans is the (i*(k−
1)+j)th first output in a continuous plurality of first outputs, wherein i≧
2, j≧
1, k≧
1, and i, j, k are natural numbers.- View Dependent Claims (7, 8, 9, 10)
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11. A device for differential touch detection, comprising:
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a first selecting unit for simultaneously receiving signals of a plurality of adjacent first axial wires of a touch panel, and outputting the signals of these adjacent first axial wires according to a first selecting signal in a time-sharing manner S1 times, wherein the first selecting unit includes a plurality of outputs and each output outputs next of the signals of the adjacent first axial wires each time after the first time of output, wherein S1≧
2 and S1 is a natural number, wherein at least two of the outputs are selected from two of the first axial wires which are non-neighboring;a first differential unit for receiving the signals of the adjacent first axial wires output from the first selecting unit, and subtracting two adjacent signals of the signals of the adjacent first axial wires from one another to obtain X results, wherein X 1 and X is a natural number; and a detection controlling unit for receiving the X results and controlling the first selecting signal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method for parallel-scanning differential touch detection, comprising:
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providing a plurality of first inputs by operatively coupling a first selecting unit to a plurality of sensors of a touch panel, wherein each of the first inputs operatively coupling to i continuous of the plurality of sensors in total i scans; and generating a plurality of first outputs based on the first inputs by a differential unit in each scan of the total i scans, wherein the kth first output in the jth scan of the total i scans is the (i*(k−
1)+j)th first output in a continuous plurality of first outputs, wherein i≧
2, j≧
1, k≧
1, and i, j, k are natural numbers. - View Dependent Claims (23, 24, 25, 26)
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27. A method for parallel-scanning differential touch detection, comprising:
generating a plurality of first outputs by a differential unit based on a plurality of first inputs provided by a plurality of sensors of a touch panel in each scan of total i scans, wherein the kth first output in the jth scan of the total i scans is the (i*(k−
1)+j)th first output in a continuous plurality of first outputs, wherein i≧
2, j≧
1, k≧
1, and i, j, k are natural numbers.- View Dependent Claims (28, 29, 30, 31)
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32. A method for differential touch detection, comprising:
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a first selecting unit simultaneously receiving signals of a plurality of adjacent first axial wires of a touch panel, and outputting the signals of these adjacent first axial wires according to a first selecting signal in a time-sharing manner S1 times, wherein the first selecting unit includes a plurality of outputs and each output outputs next of the signals of the adjacent first axial wires each time after the first time of output, wherein S1≧
2 and S1 is a natural number, wherein at least two of the outputs are selected from two of the first axial wires which are non-neighboring;a first differential unit receiving the signals of the adjacent first axial wires output from the first selecting unit, and subtracting two adjacent signals of the signals of the adjacent first axial wires from one another to obtain X results, wherein X≧
1 and X is a natural number; anda detection controlling unit receiving the X results and controlling the first selecting signal. - View Dependent Claims (33, 34, 35, 36, 37, 38)
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Specification