A method to improve the linearity of touch coordinate trajectory

A linearity and coordinate technology, applied in the input/output process of data processing, instruments, electrical digital data processing, etc., to improve product competitiveness and compatibility, improve linearity performance, and improve the coordinate linearity performance of capacitive touch systems Effect

Active Publication Date: 2015-11-18
ORISE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, there is still room for improvement in the calculation technology of the linearity of the existing touch coordinate trajectory

Method used

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  • A method to improve the linearity of touch coordinate trajectory
  • A method to improve the linearity of touch coordinate trajectory
  • A method to improve the linearity of touch coordinate trajectory

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Experimental program
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Embodiment Construction

[0054] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0055] Figure 8 It is a flowchart of a method for improving the linearity of touch coordinate trajectory according to the present invention, and the method is used as Picture 9 As shown in the capacitive multi-touch system, the capacitive multi-touch system includes a capacitive touch panel 21 and a control device 22, wherein the capacitive touch panel 21 has a distribution in the first direction X M first conductor lines 31 and N second conductor lines 32 distributed in the second direction Y, the first direction is perpendicular to the second direction, M and N are positive integers, each of the first conductor lines 31 and the second conductor The intersection of line 32 is a pixel p(i,j) corresponding to the raw data (RawData) of the capaciti...

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Abstract

The invention provides a method for improving the linearity of a touch coordinate trajectory. The method comprises the following steps: reading unprocessed two-dimensional data of a capacitive touch panel, and then reading a pixel of the unprocessed two-dimensional data and adjacent domains of the pixel; judging whether a pixel value of the pixel is larger than a critical value or not, and judging whether the pixel values of the adjacent domains are larger than the critical value or not if the pixel value of the pixel is not larger than the critical value; setting the pixel value of the pixel as a first set value if none of the pixel values of the adjacent domains is larger than the critical value; and retaining the pixel value of the pixel if at least one of the pixel values of the adjacent domains is larger than the critical value, so as to increase the linearity of the unprocessed two-dimensional data, and further protect the two-dimensional data from noise interference.

Description

Technical field [0001] The present invention relates to the technical field of touch panels, in particular to a method that can improve the linearity of touch coordinate tracks. Background technique [0002] The technical principle of the touch panel is that when a finger or other medium touches the screen, it detects voltage, current, sound waves or infrared rays according to different sensing methods, and then measures the coordinate position of the touch point. For example, a resistive touch panel uses the potential difference between the upper and lower electrodes to calculate the position of the pressure point, and then detects the touch point. The capacitive touch panel uses the capacitance change generated by the electrostatic combination between the arranged transparent electrodes and the human body to detect its coordinates from the generated current or voltage. [0003] Mutual capacitance touch detection is a type of projected capacitive touch sensing (Projected Capaciti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/044
Inventor 黄鑫茂龚至宏游翔钲黄世新
Owner ORISE TECH CO LTD
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