Touch detection method and touch detection device

A technology of touch detection and touch points, applied in the electronic field, can solve the problems that the performance and touch accuracy of large-size resistive touch screens cannot be satisfied at the same time

Active Publication Date: 2017-06-13
SHENZHEN UNIMAT AUTOMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Embodiments of the present invention provide a touch detection method and device, aiming to solve the problem that th

Method used

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  • Touch detection method and touch detection device

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Experimental program
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Embodiment 1

[0024] figure 1 It is a flow chart of a touch detection method provided in Embodiment 1 of the present invention. The execution subject of the embodiment of the present invention is an intelligent terminal device, which specifically may be an intelligent terminal device such as a smart phone including a large-size resistive touch screen. figure 1 The exemplary touch detection method may specifically include steps S101 to S104, which are described in detail as follows:

[0025] S101. If it is detected that the user inputs touch data through the touch screen, then perform n times of voltage value sampling on the detected touch point to obtain n x-axis voltage sample values ​​and n y-axis voltage sample values ​​in the two-dimensional coordinate system of the touch screen , where n is an integer.

[0026] Specifically, if it is detected that the user inputs touch data through the touch screen, the touch control chip can be used to perform n times of voltage value sampling on the...

Embodiment 2

[0039] image 3 It is a flow chart of a touch detection method provided in Embodiment 2 of the present invention. The execution subject of the embodiment of the present invention is an intelligent terminal device, which specifically may be an intelligent terminal device such as a smart phone including a large-size resistive touch screen. image 3 The exemplary touch detection method may specifically include steps S201 to S215, which are described in detail as follows:

[0040] S201. If the touch data input by the user through the touch screen is detected, perform n times of voltage value sampling on the detected touch point to obtain n x-axis voltage sample values ​​and n y-axis voltage sample values ​​in the two-dimensional coordinate system of the touch screen value, where n is an integer.

[0041] Specifically, if it is detected that the user inputs touch data through the touch screen, the touch control chip can be used to perform n times of voltage value sampling on the d...

Embodiment 3

[0097] Figure 4 It is a schematic structural diagram of a touch detection device provided in Embodiment 3 of the present invention. For convenience of description, only the parts related to the embodiment of the present invention are shown. Figure 4 An exemplary touch detection device may be the subject of execution of the touch detection method provided in Embodiment 1 above. Figure 4 An exemplary touch detection device includes a parameter sampling module 31, a judgment module 32, a calculation module 33 and a first determination module 34, and each functional module is described in detail as follows:

[0098] The sampling module 31 is configured to perform n times of voltage value sampling on the detected touch point if it is detected that the user inputs touch data through the touch screen, to obtain n x-axis voltage sample values ​​and n x-axis voltage sampling values ​​in the two-dimensional coordinate system of the touch screen y-axis voltage sampling value, where n...

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Abstract

The invention is applicable to the technical field of electronics, and provides a touch detection method and a touch detection device, which are intended to solve the problem in the prior art that the performance and touch accuracy of large-size resistive touch screens cannot be simultaneously met. The method includes: if touch data which is inputted by a user through a touch screen is detected, then carrying out voltage value sampling on detected touch points for n times; according to n x-axis sampled voltage values and n y-axis sampled voltage values, judging whether the positions of the touch points belong to touch-insensitive problematic areas; if the positions of the touch points belong to the problematic areas, then continuing to carry out voltage value sampling on the touch points, and calculating x-axis voltage values and y-axis voltage values of the touch points according to sampled data; and determining position coordinates of the touch points on the touch screen according to the x-axis voltage values and the y-axis voltage values. The technical solution of the invention reduces the processing load of a processor and increases touch performance, and moreover, problems, such as touch display refresh delay, are prevented.

Description

technical field [0001] The present invention relates to the field of electronic technology, in particular to a touch detection method and device. Background technique [0002] At present, as the size of touch screens continues to increase, large-sized finished touch screens have poor performance in terms of touch pressure consistency. Product developers often filter invalid data and calculate accurate touch trajectories by increasing the number of sampling points or uniformly using filtering algorithms with high time complexity. [0003] However, increasing the number of sampling points and uniformly using filtering algorithms with high time complexity will increase the burden on the main processor. In embedded systems with strict performance requirements, it will often lead to problems such as touch display refresh delays. Affect the user's touch experience. Contents of the invention [0004] Embodiments of the present invention provide a touch detection method and devi...

Claims

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Application Information

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IPC IPC(8): G06F3/041
CPCG06F3/041
Inventor 李文权李志敏
Owner SHENZHEN UNIMAT AUTOMATION TECH
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