Zoom gesture determination method and touch control chip
First Claim
Patent Images
1. A zoom gesture determination method for a touch control device, comprising:
- detecting a first touch point and a second touch point, wherein the first touch point and the second touch point are simultaneously on the touch control device;
determining a position difference between the first touch point and the second touch point, comprising determining a horizontal position difference and a vertical position difference between the first touch point and the second touch point; and
deciding a zoom gesture represented by the first touch point and the second touch point according to variations in the position difference, wherein the step of deciding the zoom gesture represented by the first touch point and the second touch point according to variations in the position difference comprises;
deciding whether the zoom gesture represented by the first touch point and the second touch point is a zoom-in gesture or a zoom-out gesture according to whether the position difference is continuously increasing or continuously decreasing.
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Abstract
A zoom gesture determination method for a touch control device includes detecting a first touch point and a second touch point; determining a position difference between the first touch point and the second touch point; and deciding a zoom gesture represented by the first touch point and the second touch point according to variations in the position difference.
15 Citations
18 Claims
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1. A zoom gesture determination method for a touch control device, comprising:
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detecting a first touch point and a second touch point, wherein the first touch point and the second touch point are simultaneously on the touch control device; determining a position difference between the first touch point and the second touch point, comprising determining a horizontal position difference and a vertical position difference between the first touch point and the second touch point; and deciding a zoom gesture represented by the first touch point and the second touch point according to variations in the position difference, wherein the step of deciding the zoom gesture represented by the first touch point and the second touch point according to variations in the position difference comprises; deciding whether the zoom gesture represented by the first touch point and the second touch point is a zoom-in gesture or a zoom-out gesture according to whether the position difference is continuously increasing or continuously decreasing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A touch control chip for a touch control device, the touch control chip comprising:
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a detecting unit, for detecting a first touch point and a second touch point, wherein the first touch point and the second touch point are simultaneously on the touch control device; a determining unit, for determining a position difference between the first touch point and the second touch point; and a deciding unit, for deciding a zoom gesture represented by the first touch point and the second touch point according to variations in the position difference; wherein the determining unit determines a horizontal position difference and a vertical position difference between the first touch point and the second touch point to determine the position difference between the first touch point and the second touch point; wherein the deciding unit decides whether the zoom gesture represented by the first touch point and the second touch point is a zoom-in gesture or a zoom-out gesture according to whether the position difference is continuously increasing or continuously decreasing. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A zoom gesture determination method for a touch control device, comprising:
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detecting a first touch point and a second touch point; determining a position difference between the first touch point and the second touch point, comprising determining a horizontal position difference and a vertical position difference between the first touch point and the second touch point; and deciding a zoom gesture represented by the first touch point and the second touch point according to variations in the position difference; and when the horizontal position difference or the vertical position difference is zero, utilizing a de-bounce mechanism to decide whether the first touch point and the second touch point are truly horizontally or vertically arranged.
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18. A touch control chip for a touch control device, the touch control chip comprising:
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a detecting unit, for detecting a first touch point and a second touch point; a determining unit, for determining a position difference between the first touch point and the second touch point; and a deciding unit, for deciding a zoom gesture represented by the first touch point and the second touch point according to variations in the position difference; wherein the determining unit determines a horizontal position difference and a vertical position difference between the first touch point and the second touch point to determine the position difference between the first touch point and the second touch point; wherein the deciding unit utilizes a de-bounce mechanism to decide whether the first touch point and the second touch point are truly horizontally or vertically arranged when the horizontal position difference or the vertical position difference is zero.
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Specification