Positioning method and device for touch screen and touch screen equipment

Abstract

The embodiment of the invention discloses a positioning method and device for a touch screen and touch screen equipment, relates to the technical field of touch, and can improve positioning precision. According to the specific scheme, the method comprises the following steps that a first intersection point set is obtained, and the first intersection point set comprises one or more covered intersection points; the first covered intersection point serves as a circle center, searching is performed in a circle with a preset searching threshold value as the radius, and a second intersection point set is obtained; a second covered intersection point is determined according to coordinate values of all covered intersection points in the second intersection point set; the coordinate value of the second covered intersection point is the average value of the coordinate values of all the covered intersection points in the second intersection point set; if the second covered intersection point serves as the circle center, a third intersection point set is obtained through searching in the circle with the preset searching threshold value as the radius, a third covered intersection point is not included in the third intersection point set, and whether candidate touch points formed by the covered intersection points in the third intersection point set are true touch points or not is determined.

Description

technical field [0001] The present invention relates to the field of touch technology, in particular to a touch screen positioning method, device and touch screen equipment. Background technique [0002] With the introduction of the new human-computer interaction technology—touch screen technology, the input control mode of electronic products has gradually changed from the traditional keyboard or mouse control mode to the touch screen control mode. Compared with traditional input control methods, touch screen technology can provide users with more simplified human-computer interaction services. Among them, the infrared touch technology is a common touch screen technology. The infrared touch screen used in infrared touch technology has a rectangular structure. The infrared touch screen consists of a long emitting side, a long receiving side, a short emitting side and a short receiving side. [0003] In the prior art, for the situation of multi-touch point touch, the infrar...

AI Technical Summary

Problems solved by technology

[0004] However, there is a problem: when the infrared touch technology in the prior art locates candidate touch points, it only uses the long and short sides of the forward scanning optical path to locate candidate touch points. When the distance between multiple touch points is relatively short, There may be a problem that multiple touch points that are close to each other cannot be distinguished, and the positioning accuracy of touch points is low

For touch point 1 and touch point 2, when using the long and short side forward scanning optical paths to locate candidate touch points, under normal circumstances, such as Figure 1b Four candidate touch points can be located as shown; however, as Figure 2a As shown, when the distance between touch point 1 and touch point 2 is relatively close, such as Figure 2b As shown, using the long and short sides of the forward scanning optical path to locate candidate touch points may mix touch point 1 and touch point 2 into one touch point in the vertical direction, so that only two candidate touch points can be obtained, and it is impossible to distinguish the ones with a closer distance. Multiple touch points will lead to the loss of candidate touch points, and the positioning accuracy of touch points is low

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