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Touch detection method, touch detection device and touch display device

A touch detection and touch screen technology, applied in the fields of touch detection devices, touch display devices, and touch detection, can solve the problems of inability to quickly identify new points, failure of fast gesture operations, incomplete strokes, etc., to achieve rapid judgment and response, The effect of increasing the tracking scanning range and improving the recognition rate

Active Publication Date: 2022-01-28
HISENSE COMML DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the small range of fixed tracking scans, it is often impossible to quickly identify the new points that fall into, and after switching to full-screen scanning, due to the large range of full-screen scanning, it is prone to obvious jamming, resulting in rapid pen-raising and pen-down When writing, the strokes are incomplete, and the quick gesture operation fails, etc.

Method used

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  • Touch detection method, touch detection device and touch display device
  • Touch detection method, touch detection device and touch display device
  • Touch detection method, touch detection device and touch display device

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0043] The touch detection method provided by the embodiment of the present invention includes: selecting one optical path direction from at least one optical path direction on one scanning side of the touch screen as the sentinel optical path direction; and dividing the entire touch screen area into t polling scanning areas. Wherein, the t polling scan areas are combined to cover the entire touch screen area, and two adjacent polling scan areas may partially overlap or not overlap at all, for example Figure 4 Schematics where the two polled scan regions partially overlap are shown, and Figure 5 Schematic when the two polled scan areas shown do not overlap.

[0044] see Figure 6 , the touch detection method provided by the embodiment of the present invention includes a plurality of scanning cycles, and each scanning cycle includes: Step S1, judging whether there is a touch point in the previous scanning cycle, and if so, determining multiple scanning optical paths in the d...

Embodiment 2

[0085] Based on the technical solution of the first embodiment above, the embodiment of the present invention provides a touch detection device, please refer to Figure 14 , the touch detection device 20 includes: a judging module 202 , a selecting module 204 and a scanning control module 206 connected in sequence.

[0086] Wherein, the judging module 202 is used to judge whether there is a contact in the last scanning cycle, and when there is a contact in the last scanning cycle, judge the number of scanning light paths blocked by the contact in the multiple scanning light paths in the direction of the sentinel light path. Quantity T x1 Is it equal to 0.

[0087] The selection module 204 is used to select a scanning method as the sentinel light path direction from the following two scanning methods according to the judgment result of the judgment module 202:

[0088] Scanning method 1: full screen scanning;

[0089] Scanning method 2: scan in the merged scanning area;

[...

Embodiment 3

[0096] Based on the technical solution of the first embodiment above, the embodiment of the present invention also provides a computer-readable storage medium, the computer-readable storage medium stores instruction codes, and the instruction codes are used to execute the One or more steps in the touch detection method.

[0097]Exemplarily, the instruction code can be transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the instruction code can be transmitted from a website site, computer, server or data center through a wire (such as a coaxial cable, Optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (such as infrared, wireless, microwave, etc.) transmission to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device including a server, a data center, and the like ...

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Abstract

The invention discloses a touch detection method, a touch detection device and a touch display device, which relate to the field of touch control and are used for improving the recognition and tracking capabilities of touch points. The method includes: judging whether there is a contact in the last scanning cycle, and if so, determining the number T of the scanning light paths blocked by the contact in the multiple scanning light paths in the direction of the sentinel light path x1 ; Judgment T x1 Whether it is equal to 0, if not, then determine the current polling scan area from the t polling scan areas according to the set rules, and determine the tracking scan area of ​​the contact point in the direction of the sentinel light path; the determined polling scan area The area and the tracking scanning area are merged to form a combined scanning area, and scanning in the direction of the sentinel light path is performed in the combined scanning area. The touch detection method provided by the present invention makes it difficult to lose the track of existing contacts, and realizes fast judgment and response of new contacts while effectively tracking existing contacts, improves the recognition rate of new contacts, and enables fast touch operation The time sensitivity is high.

Description

technical field [0001] The present invention relates to the field of touch control, in particular to a touch detection method, a touch detection device and a touch display device. Background technique [0002] Infrared touch screen is an electronic device that can detect touch operations in the entire touch screen area. It simplifies the human-computer interaction method and is widely used in many fields due to its advantages of simple production process, low production cost, convenient installation and high reliability. Applications. [0003] Existing infrared touch screens usually have a rectangular structure, such as figure 1 As shown, the infrared touch screen is composed of a long emitting side 11, a long receiving side 11', a short emitting side 12, and a short receiving side 12'. There are several transmitting lamps 13 on each transmitting side, and correspondingly there are several receiving lamps 13' on the corresponding receiving side. Usually, a one-to-many mode...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/041G06F3/042
CPCG06F3/0416G06F3/0421
Inventor 王武军薛晓光张晓娜林小峰
Owner HISENSE COMML DISPLAY CO LTD
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