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Method for detecting touch point coordinates

A coordinate detection and touch point technology, which is applied in the direction of instruments, electrical digital data processing, and data processing input/output process, can solve the problems of different detection performance and achieve the effect of supporting multi-touch detection

Active Publication Date: 2009-12-02
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Various touch point coordinate detection methods suitable for embedded touch panels and supporting multi-touch detection have also been proposed. However, the detection performance achieved by these touch point coordinate detection methods is different, so it is necessary to The touch point coordinate detection method is continuously improved

Method used

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Embodiment Construction

[0029] The aforementioned and other technical content, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the drawings. The directional terms mentioned in the following embodiments, such as: up, down, left or right, etc., are only directions referring to the attached drawings. Accordingly, the directional terms are used to illustrate and not to limit the invention.

[0030] The following will combine Figure 1 to Figure 7 A method for detecting coordinates of a touch point proposed by an embodiment of the present invention is described in detail, which is suitable for a liquid crystal display with an embedded touch panel, but the present invention is not limited thereto. In this embodiment, the scanning mode adopted by the liquid crystal display is from left to right and from top to bottom.

[0031] First, combine the figure 1 The adjacent point discrimination method used ...

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Abstract

A method for detecting touch point coordinates comprises the following steps: scanning a plurality of original touch data points; carrying out grouping arithmetic on the original touch data points to classify the original touch data points into a plurality of grouping sets; and calculating barycentric coordinates of each grouping set and outputting the barycentric coordinates as the touch point coordinates.

Description

technical field [0001] The present invention relates to the technical field of touch detection, and in particular to a method for detecting coordinates of touch points supporting multi-touch detection. Background technique [0002] Press, the touch panel has been widely integrated in various electronic products as an input device, the user only needs to slide or touch the touch object (such as a finger or a stylus) on the panel to make the cursor generate Relative movement or absolute coordinate movement can complete various inputs including text writing, scrolling windows and virtual keys. [0003] Currently, touch panels integrated into electronic products include two types: Surface Mount Touch Panels and In-Cell Touch Panels. Among them, the embedded touch panel technology can be realized in the existing thin film transistor liquid crystal display (TFT-LCD) manufacturing process, which maintains the advantages of the original display's good photoelectric characteristics ...

Claims

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Application Information

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IPC IPC(8): G06F3/041
Inventor 王朝珍周恒生贾邦强李煜斌
Owner AU OPTRONICS CORP