Infrared touch screen multi-touch recognition method and system
An infrared touch screen, multi-touch technology, applied in the direction of instrument, electrical digital data processing, data processing input/output process, etc., can solve the problems of complex control, data redundancy, affecting the positioning accuracy of infrared touch, etc., to shorten the scanning time, increase the scanning frequency, and improve the effect of stability and fluency
Active Publication Date: 2017-02-15
深圳市浪涛科技有限公司
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[0004] However, the above-mentioned infrared touch screen touch point recognition method is generally limited to single-point or two-point touch, and for more than two touch points, the control is relatively complicated, data redundancy, time-consuming calculation, slow response speed, and affect the infrared Accuracy of touch positioning
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[0043] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0044]The invention provides a multi-touch identification method of an infrared touch screen, comprising the following steps: providing an infrared touch screen, a plurality of infrared emitting tubes and a plurality of infrared receiving tubes arranged on both sides of the infrared touch screen, the plurality of infrared The emitting tube and the plurality of infrared receiving tubes are equidistantly arranged, each infrared emitting tube corresponds to three infrared receiving tubes, each infrared receiving tube corresponds to three infrared emitting tubes, the plurality of infrared emitting tubes...
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The invention discloses a multi-point touch recognition method and system for an infrared touch screen. The method comprises the following steps: providing an infrared touch screen, a plurality of infrared transmitting pipes and a plurality of infrared receiving pipes; diagnosing positions of touch notches on the infrared touch screen; selecting a rectangle area and a square unit containing the touch notches on the infrared touch screen; diagnosing and obtaining all possible touch points in the rectangle area through the square unit; removing fake points existing in the possible touch points by examining the possible touch points; calculating and obtaining coordinate values of the real touch points. According to the invention, the rectangle area and the square unit are adopted for sweeping to screen possible fake points out; all the possible touch points are conducted by examination; sweep time of the infrared transmitting pipes and the infrared receiving pipes is shortened; response speed and positioning accuracy of the infrared touch screen are improved; multi-point touch recognition accuracy of the infrared touch screen is improved.
Description
technical field [0001] The invention relates to the technical field of infrared touch screens, in particular to an infrared touch screen multi-touch recognition method and system. Background technique [0002] As a new type of computer input device, touch screen makes human-computer interaction more intuitive and greatly facilitates the work and life of users. Therefore, touch screen has been widely used in public information, office automation equipment, communication equipment and other fields. [0003] At present, the existing infrared touch screen devices usually have infrared emitting tubes and infrared receiving tubes in two straight directions, horizontal and vertical, and the two-way infrared emitting tubes and infrared receiving tubes together form a positioning plane. Whether the infrared signal is blocked between the corresponding infrared emitting tube and the infrared receiving tube changes, and the computer calculates and determines the position coordinates of ...
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IPC IPC(8): G06F3/042
Inventor 江波
Owner 深圳市浪涛科技有限公司