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A corner touch recognition method, device and mobile terminal based on area mirroring

A recognition method and mirroring technology, applied in the field of corner touch recognition based on area mirroring in mobile terminals, can solve the problems of coordinate point offset, incomplete data, distortion, etc.

Active Publication Date: 2020-08-28
SHENZHEN DEMINGLI ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the mutual capacitance multi-touch system, when the finger touches the corner of the touch screen, part of the finger will be pressed outside the screen, resulting in incomplete data. Therefore, when the touch IC firmware uses the center of gravity algorithm to calculate the coordinates of the edge part, It will cause the coordinate point to shift to the center part, causing distortion

Method used

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  • A corner touch recognition method, device and mobile terminal based on area mirroring
  • A corner touch recognition method, device and mobile terminal based on area mirroring
  • A corner touch recognition method, device and mobile terminal based on area mirroring

Examples

Experimental program
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Embodiment 1

[0114] refer to figure 1 , this embodiment provides a corner touch recognition method based on region mirroring, including:

[0115] Step S101, setting a mirror image channel outside the edge channel of the display area;

[0116] Step S102, detecting whether a touch occurs, and if so, searching for the first touch area;

[0117] Step S103, searching for the maximum value unit with the largest signal variation in the first touch area;

[0118] Step S104, judging whether the maximum value unit is located at the corner of the display area, if so, searching for the mirror image units around the maximum value unit on the mirror image channel;

[0119] Step S105, calculating the signal variation of the relevant units around the maximum value unit;

[0120] Step S106, according to the signal variation of the maximum value unit and surrounding related units, calculate the signal variation of the mirror image unit, and obtain the second touch area centered on the maximum value unit;...

Embodiment 2

[0135] This embodiment describes the case where the maximum value unit is located in the edge channel at the upper left corner of the display area.

[0136] First, a mirror channel is set outside the edge channel of the display area to detect whether a touch occurs, and if so, search the first touch area, find the maximum value unit with the largest signal change in the first touch area, and judge that The maximum value unit is located in the edge channel at the upper left corner of the display area.

[0137] Set the touch threshold TL, the first touch threshold FTL and the second touch threshold STL, wherein the first touch threshold is 0.9 times of the touch threshold, and the second touch threshold is 0.6 times of the touch threshold.

[0138] The touch threshold TL is determined according to the tuning parameters of the touch screen, and the preferred range is 180-220.

[0139] Further, refer to Figure 4 , if the maximum value cell is located in the upper-left edge chan...

Embodiment 3

[0162] In this embodiment, the case where the maximum value unit is located in the edge channel at the lower left corner of the display area is described.

[0163] First, a mirror channel is set outside the edge channel of the display area to detect whether a touch occurs, and if so, search the first touch area, find the maximum value unit with the largest signal change in the first touch area, and judge that The maximum value unit is located in the edge channel at the lower left corner of the display area.

[0164] Set the touch threshold TL, the first touch threshold FTL and the second touch threshold STL, wherein the first touch threshold is 0.9 times of the touch threshold, and the second touch threshold is 0.6 times of the touch threshold.

[0165] The touch threshold TL is determined according to the tuning parameters of the touch screen, and the preferred range is 180-220.

[0166] Further, refer to Figure 5 , if the maximum value cell is located in the lower left ed...

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Abstract

The invention provides a corner touch identification method based on area mirror image, a device and a mobile terminal, wherein, the method comprises the following steps: a mirror image channel is arranged outside an edge channel of a display area; Detecting whether or not a touch occurs, and if so, searching for a first touch area; Finding a maximum value unit in the first touch area in which thesignal change amount is the largest; Judging whether the maximum value unit is located at the corner of the display area, and if so, searching for the mirror unit located on the mirror channel aroundthe maximum value unit; Calculating a signal change amount of a correlation unit around the maximum value unit; Calculating a signal change amount of the mirror unit according to the signal change amount of the maximum value unit and the surrounding correlation unit, and obtaining a second touch control area centered on the maximum value unit; Calculating a coordinate position according to the second touch area; By setting a mirror unit, the touch area in the corner of the display area is mirrored, and the touch area is re-determined, so as to avoid shifting to the center of the display areawhen coordinates are calculated, and the accuracy of coordinates calculation is improved.

Description

technical field [0001] The present invention relates to the field of touch technology, in particular to a corner touch recognition method, device and mobile terminal based on area mirroring. Background technique [0002] In the mutual capacitance multi-touch system, when the finger touches the corner of the touch screen, part of the finger will be pressed outside the screen, resulting in incomplete data. Therefore, when the touch IC firmware uses the center of gravity algorithm to calculate the coordinates of the edge part, It will cause the coordinate point to shift to the center part, causing distortion. Contents of the invention [0003] The purpose of the present invention is to solve the problem in the prior art that the coordinate point shifts to the center when the finger touches the corner, and propose a corner touch recognition method, device and mobile terminal based on area mirroring, which can effectively improve the problem , to improve the accuracy of coordi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/0488G06F3/041G06F3/044
CPCG06F3/0418G06F3/044G06F3/04883
Inventor 田华范京津
Owner SHENZHEN DEMINGLI ELECTRONICS