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Large-screen touch interaction system

An interactive system and large-screen technology, which is applied in the field of large-screen touch interactive systems, can solve problems such as lost points, inability to multi-touch, and inability to be detected, achieving a large fan-out angle, reducing the number of lasers, and reducing installation costs Effect

Inactive Publication Date: 2017-02-08
南京仁光电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when multiple touch points are on a line, the touch points in the front will cover the touch points behind, so that the touch points behind are not irradiated by the infrared laser and cannot be detected, so it is easy to lose points Phenomenon, can not really achieve multi-touch

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A large screen touch interaction system, the laser is installed on one side of the large screen, the large screen is spliced ​​by two splicing screens, and the size of the splicing screen can be 4:3, 16:9, etc.

[0035] This device distributes the installation position of the laser according to the illumination plane and light intensity range of the laser. It is verified by experiments that when the fan-out angle is 90°, the camera can capture a strong bright spot, and the touch effect is more sensitive. Therefore, when installing the laser, the part within the fan-out angle of 90° is mainly used.

[0036] Such as figure 1 As shown, laser 1 and laser 2 are installed on the top of the large screen, and the fan-out angle is 90°, which can ensure that the large screen can be covered with a layer of infrared laser rays emitted by the laser and parallel to the screen, so that when touching Ensure good touch in the large screen range. The laser 6 is installed at the joint o...

Embodiment 2

[0039] A large screen touch interaction system, the large screen is spliced ​​by two splicing screens, the size of the splicing screen can be 4:3, 16:9, etc., and the lasers are installed on both sides of the large screen Above and below, or above and adjacent.

[0040] This device distributes the installation position of the laser according to the illumination plane and light intensity range of the laser. It is verified by experiments that when the fan-out angle is 90°, the camera can capture a strong bright spot, and the touch effect is more sensitive. Therefore, when installing the laser, the part within the fan-out angle of 90° is mainly used.

[0041] Such as Figure 4 As shown, laser 1 and laser 2 are installed on the upper side of the large screen, and laser 6 is installed on the lower side of the large screen, located at the joint of the two splicing screens, and the light intensity superimposes at the boundary of the lasers to form a complementary relationship, ensur...

Embodiment 3

[0044] A large-screen touch interaction system. The large screen is spliced ​​by two splicing screens. The size of the splicing screen can be 4:3, 16:9, etc. The laser is installed on three sides of the large screen, which can be the top, Left and right, top, left and bottom, top, right and bottom, bottom, left and right.

[0045] This device distributes the installation position of the laser according to the illumination plane and light intensity range of the laser. It is verified by experiments that when the fan-out angle is 90°, the camera can capture a strong bright spot, and the touch effect is more sensitive. Therefore, when installing the laser, the part within the fan-out angle of 90° is mainly used.

[0046] Such as Figure 6 As shown, laser 1 and laser 2 are located on the upper side, laser 2 is located at the joint of the splicing screen, laser 6 and laser 7 are respectively installed on the left and right of the large screen, and the light intensity superimposed o...

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Abstract

The invention provides a large-screen touch interaction system. The large-screen touch interaction system comprises a large screen and a laser; the large screen is formed by multiple display units in a stitching manner; the laser is installed at the edge of the large screen; at least one edge of the large screen is provided with the laser; and therefore, the surface of the whole large screen is uniformly covered by infrared laser ray parallel to the large screen and emitted by the laser. According to the large-screen touch interaction system disclosed by the invention, both the parallelism and the intensity of the emitted light are superior to that of the LED laser; the problems that detection of a part of area is non-sensitive, the imaging quality is not high and a touch point in the middle part cannot be detected when multiple touch points are simultaneously operated can be overcome; by utilization of the characteristics of large fan-out angle, centralized light intensity and uniform distribution, the number of the lasers installed at the edge of the large screen can be reduced; and thus, the installation cost is reduced.

Description

technical field [0001] The invention relates to the technical field of large-screen positioning, in particular to a large-screen touch interaction system. Background technique [0002] In the existing large screen, in the touch positioning realized by using the rear positioning method of the camera, the light-emitting pen is generally used for the touch operation, which cannot realize the operation and control of the finger, which brings some inconvenience to the user. In the positioning touch system behind the camera, in order to realize the reliable touch of the finger, a device that can make the touch point of the finger emit light and be reliably detected by the camera is usually used. However, if infrared LEDs are used to design this light source device, since the scattering angle of LEDs is relatively large, the light source is not concentrated, and the attenuation is relatively severe, so a large number of infrared LEDs must be used, which will increase the cost of ha...

Claims

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Application Information

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IPC IPC(8): G06F3/042G06F3/14
CPCG06F3/0425G06F3/1423G06F2203/04104
Inventor 谭登峰杜响红
Owner 南京仁光电子科技有限公司