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Method for judging three-finger coaxial split point in touch recognition, touch screen and electronic equipment

A touch screen, coaxial technology, applied in electrical digital data processing, input/output process of data processing, instruments, etc. Unfavorable coordinate recognition and other problems to achieve the effect of improving accuracy

Active Publication Date: 2020-12-15
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 user places the electronic device on an insulating object, such as placing the mobile phone on a swivel chair in the office, and the mobile phone is in a suspended state, at this time, due to the isolation between the mobile phone ground (ie GND) and the earth, At this time, the change of user touch is very small, refer to figure 1 , if the user draws lines with three fingers in the same direction, one of the drawn lines may appear to be split, point A and point B are the split points, so that one dashed line breaks into two lines, when the split occurs, touch The IC may mistakenly think that these are two tracks, which is not good for the coordinate recognition of the three-finger coaxial scribing

Method used

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  • Method for judging three-finger coaxial split point in touch recognition, touch screen and electronic equipment
  • Method for judging three-finger coaxial split point in touch recognition, touch screen and electronic equipment
  • Method for judging three-finger coaxial split point in touch recognition, touch screen and electronic equipment

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Experimental program
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Effect test

Embodiment 1

[0049] refer to figure 2 , this embodiment provides a method for judging three-finger coaxial split points in touch recognition, including:

[0050] Step S101, collecting signal sensing quantities according to a preset frequency;

[0051] Step S102, according to the signal sensing value, judge whether the touch operation is three-finger drawing in the same direction;

[0052] Step S103, if the touch operation is to draw a line with three fingers in the same direction, then judge whether there are currently four touch points according to the signal sensing amount of the current frame;

[0053] Step S104, if there are currently four touch points, then according to the track matching, search for the first undetermined touch point and the second undetermined touch point that may be split points;

[0054] Step S105, searching for touch points in the first two frames that match the first and second pending touch points, and judging according to the coordinates of the first two fr...

Embodiment 2

[0082] refer to Figure 6 , this embodiment provides a touch screen, which is applied to the judging method of three-finger coaxial point splitting in touch recognition as described in Embodiment 1. The touch screen includes a display area A and a non-display area B, and the display area A A plurality of drive sensing units are arranged in the non-display area B, and a touch IC 201 and a memory 202 are arranged in the non-display area B. The touch IC 201 is connected to the drive sensing unit through a signal line, and a plurality of instructions are stored in the memory 202. The touch IC 201 is used for reading Fetch said instruction and execute:

[0083] Acquire signal sensing quantity according to the preset frequency;

[0084] According to the sensing amount of the signal, it is judged whether the touch operation is to draw lines in the same direction with three fingers;

[0085] If the touch operation is to draw a line with three fingers in the same direction, then judg...

Embodiment 3

[0114] This embodiment provides an electronic device, including the touch screen as described in the second embodiment.

[0115] The electronic device provided in this embodiment may be any product or component with a display function, such as a mobile phone, a tablet computer, a monitor, or a notebook computer.

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Abstract

The invention provides a judgment method for three-finger coaxial point splitting in touch recognition, a touch screen and an electronic device. The method comprises: signal induction quantity is collected according to preset frequency; Judging whether the touch operation is three-finger same-direction scribing or not according to the signal induction quantity; If the touch operation is three-finger same-direction lineation, whether four touch points appear currently is judged according to the signal induction quantity of the current frame; If the four touch points appear currently, searchinga first undetermined touch point and a second undetermined touch point which may be split points according to track matching; Searching front two frames of touch points matched with the first undetermined touch point and the second undetermined touch point, and judging whether the first undetermined touch point and the second undetermined touch point are split points or not according to the coordinates of the front two frames of touch points and the coordinates of the first undetermined touch point and the second undetermined touch point; The method can effectively identify the point splittingphenomenon of the three-finger same-direction lineation of the electronic device in a suspended state.

Description

technical field [0001] The invention relates to the field of touch technology, in particular to a method for judging three-finger coaxial split points in touch recognition, a touch screen and electronic equipment. Background technique [0002] In the mutual-capacitance multi-touch system, when the user places the electronic device on an insulating object, such as placing the mobile phone on a swivel chair in the office, and the mobile phone is in a suspended state, at this time, due to the isolation between the mobile phone ground (ie GND) and the earth, At this time, the change of user touch is very small, refer to figure 1 , if the user draws lines with three fingers in the same direction, one of the drawn lines may appear to be split, point A and point B are the split points, so that one dashed line breaks into two lines, when the split occurs, touch The IC may mistakenly think that these are two tracks, which is not good for the coordinate recognition of the three-finge...

Claims

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Application Information

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