POSITIONING MODULE, OPTICAL TOUCH SYSTEM AND METHOD OF CALCULATING A COORDINATE OF A TOUCH MEDIUM
First Claim
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1. A method of calculating a coordinate of a touch medium, the method comprising:
- obtaining a first image to determine whether the first image overlaps a first threshold;
generating a first interceptive boundary when the first image overlaps the first threshold;
obtaining a second image to generate a second interceptive boundary by overlap of the second image and a second threshold;
determining whether the first interceptive boundary overlaps the second interceptive boundary; and
confirming a status of the touch medium according to determination.
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Abstract
A method of calculating a coordinate of a touch medium is disclosed in the present invention. The method includes obtaining a first image to determine whether the first image overlaps a first threshold, generating a first interceptive boundary when the first image overlaps the first threshold, obtaining a second image to generate a second interceptive boundary by overlap of the second image and a second threshold, determining whether the first interceptive boundary overlaps the second interceptive boundary, and confirming a status of the touch medium according to determination.
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Citations
25 Claims
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1. A method of calculating a coordinate of a touch medium, the method comprising:
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obtaining a first image to determine whether the first image overlaps a first threshold; generating a first interceptive boundary when the first image overlaps the first threshold; obtaining a second image to generate a second interceptive boundary by overlap of the second image and a second threshold; determining whether the first interceptive boundary overlaps the second interceptive boundary; and confirming a status of the touch medium according to determination. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A positioning module for calculating a coordinate of a touch medium, the positioning module comprises:
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at least one image detecting unit, the image detecting unit being adapted to capture a first image generated by a first beam emitted from a lateral side of the image detecting unit, and further being adapted to capture a second image generated by a second beam emitted from an upper side of the image detecting unit; and a processor electrically connected to the image detecting unit, the processor being adapted to generate a first interceptive boundary when the first image overlaps a first threshold, and to generate a second interceptive boundary when the second image overlaps a second threshold, and determining whether the first interceptive boundary overlaps the second interceptive boundary for confirming a status of the touch medium according to determination. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. An optical touch system for calculating a coordinate of a touch medium, the optical touch system comprising:
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a panel; and a positioning module disposed on the panel, the positioning module comprising; at least one image detecting unit, the image detecting unit being adapted to capture a first image generated by a first beam emitted from a lateral side of the image detecting unit, and further being adapted to capture a second image generated by a second beam emitted from an upper side of the image detecting unit; and a processor electrically connected to the image detecting unit, the processor being adapted to generate a first interceptive boundary when the first image overlaps a first threshold, and to generate a second interceptive boundary when the second image overlaps a second threshold, and determining whether the first interceptive boundary overlaps the second interceptive boundary for confirming a status of the touch medium according to determination. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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25. A positioning module for calculating a coordinate of a touch medium, the positioning module comprises:
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at least one image detecting unit, the image detecting unit being adapted to capture a first image generated by a first beam emitted from a lateral side of the image detecting unit, and further being adapted to capture a second image generated by a second beam emitted from an upper side of the image detecting unit; and a processor electrically connected to the image detecting unit, the processor driving the image detecting unit to capture the first image, and driving the image detecting unit to capture the second image if the first image overlaps a first threshold; wherein the first image is used to determine a first interceptive boundary when the first image overlaps the first threshold, and the second image is used to determine a second interceptive boundary when the second image overlaps a second threshold; wherein the processor is adapted to determine whether the first interceptive boundary overlaps the second interceptive boundary and confirm a status of the touch medium according to determination.
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Specification