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Method and device for storing position and shape information of touch point in infrared touch screen

An infrared touch screen, shape information technology, applied in the input/output process of data processing, instruments, electrical digital data processing, etc. Problems such as real contours and shapes to achieve the effect of improving user experience and satisfaction, increasing application scenarios and

Inactive Publication Date: 2017-06-27
HISENSE VISUAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this scheme roughly estimates the width and height of the touch point, when the touch object tilts the touch area, the calculated position and shape of the touch point deviate greatly ( image 3 The calculated touch point is a rectangular area with Width and Height)
[0005] It can be seen that the infrared touch screen scheme adopted by traditional manufacturers has defects in the calculation and description of the outline of the touch point. The interface is transmitted to the host computer. Based on these data, the host computer cannot accurately identify the real outline and shape of the touch point, let alone judge whether the touch object in the touch area is a pen or a blackboard eraser.

Method used

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  • Method and device for storing position and shape information of touch point in infrared touch screen
  • Method and device for storing position and shape information of touch point in infrared touch screen
  • Method and device for storing position and shape information of touch point in infrared touch screen

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Experimental program
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Embodiment 1

[0028] refer to Figure 4 , in view of the shortcomings of the infrared touch screen scheme adopted by traditional manufacturers in the calculation and description of the touch point outline, the embodiment of the present invention provides a storage method based on the position and shape information of the touch point outline in the infrared touch screen, which can be applied to the above-mentioned figure 1 In the shown infrared touch screen, the method may include the following steps:

[0029] Step S11: Determine the position and shape information used to characterize the outline of the touch point, wherein the position and shape information of the outline of the touch point includes the coordinates of the centroid, the number of vertices and the coordinates of each vertex of the outline of the touch point.

[0030] When the touch object is touched on the infrared touch screen, the object forming the touch point will block multiple light paths, and the attenuation of the rec...

Embodiment 2

[0056] According to the storage method of the position and shape information based on the outline of the touch point in the infrared touch screen, the embodiment of the present invention also provides a storage device for the position and shape information based on the outline of the touch point in the infrared touch screen, the following is the infrared touch screen of the present invention An embodiment of the storage device based on the position and shape information of the touch point outline is described in detail.

[0057] refer to Figure 9 According to an embodiment of the present invention, a storage device for storing position and shape information based on touch point outlines in an infrared touch screen may include:

[0058] The storage module 91 is used to store the position and shape information used to characterize the outline of the touch point in a data format containing three fields including the centroid coordinates, the number of vertices, and the coordinat...

Embodiment 3

[0068] An embodiment of the present invention also provides a touch terminal device, including a memory, a processor, and a computer program stored in the memory and operable on the processor, wherein when the processor executes the above program The following steps are implemented, and the steps include the storage method in any one of the first embodiment.

[0069]Correspondingly, the touch terminal device may also include: an infrared touch screen, an infrared emitting tube and an infrared receiving tube arranged around the infrared touch screen, and Figure 9-Figure 10 Provided is a storage device for position and shape information based on touch point outlines in an infrared touch screen.

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Abstract

The invention discloses a storage method and device for position and shape information of a touch point contour in an infrared touch screen, and relates to the technical field of infrared touch screens. The method comprises the steps that the position and shape information for representing the touch point contour is stored in the data format containing three fields including the centroid coordinate, the vertex number and the vertex coordinates of the touch point contour, wherein the touch point contour is determined through the steps that multiple touch areas are determined by executing scanning in multiple scanning directions in a scanning period, and an intersection of the touch areas is determined as the touch point contour. Accordingly, by storing the position and shape information of the touch point contour, the position and shape information of the touch point counter can be further processed.

Description

technical field [0001] The invention relates to the technical field of infrared touch screens, in particular to a method and device for storing contact position and shape information in an infrared touch screen. Background technique [0002] figure 1 It is a schematic diagram of the structure of the infrared touch screen in the related technology, such as figure 1 As shown, the existing infrared touch screen has a rectangular structure, including a touch panel 11, a circuit board 12 arranged around the touch panel, an infrared emitting tube 13 and a receiving tube 14 arranged on the circuit board, and an infrared sensor for obtaining touch coordinates. Data Controller 15. Usually, an infrared touch screen uses an infrared emitting tube 13 to emit light, and multiple infrared receiving tubes 14 on the opposite side receive it at the same time, thereby forming an optical network. When there is a touch operation, the controller 15 obtains the touch point according to whether ...

Claims

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Application Information

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IPC IPC(8): G06F3/042
CPCG06F3/042
Inventor 王武军薛晓光李新张连峰
Owner HISENSE VISUAL TECH CO LTD
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