METHOD AND DEVICE FOR PALM REJECTION
First Claim
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1. A method for palm rejection, comprising:
- scanning a touch panel to obtain an image;
detecting at least one first touched region based on the image before the touch panel is touched by at least one finger or pen;
defining at least one rejection region based on the first touched region when the at least one first touched region is detected; and
identifying a touch location corresponding to each of the finger or pen outside the at least one rejection region when the touch panel is being touched by the at least one finger or pen.
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Abstract
The present invention carries out palm rejection on a multi-touch panel. The panel is first touched by a palm before the detection of a finger or pen to define a rejection region and the touch location of the finger or pen is detected outside that rejection region. The present invention, when the rejection region and the touch location of the finger or pen have been detected, is able to continuously detecting a region touched by the palm using a detected range defined by the rejection region to determine whether the rejection region needs to be updated.
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Citations
10 Claims
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1. A method for palm rejection, comprising:
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scanning a touch panel to obtain an image; detecting at least one first touched region based on the image before the touch panel is touched by at least one finger or pen; defining at least one rejection region based on the first touched region when the at least one first touched region is detected; and identifying a touch location corresponding to each of the finger or pen outside the at least one rejection region when the touch panel is being touched by the at least one finger or pen. - View Dependent Claims (2, 3, 4, 5)
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6. A touch device for palm rejection, comprising:
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a touch device for providing an image; and a controller for scanning the touch device for obtaining the image and performing at least the following processes; detecting at least one first touched region based on the image before the touch panel is touched by at least one finger or pen; defining at least one rejection region based on the first touched region when the at least one first touched region is detected; and identifying a touch location corresponding to each of the finger or pen outside the at least one rejection region when the touch panel is being touched by the at least one finger or pen. - View Dependent Claims (7, 8, 9, 10)
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Specification