Touch positioning method and device for infrared touch screen

An infrared touch screen and touch positioning technology, applied in the direction of instruments, electrical digital data processing, data processing input/output process, etc., can solve the problems of touch response delay, long scanning cycle, waste of resources, etc., and achieve the effect of reducing the scanning cycle

Active Publication Date: 2018-05-08
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The infrared touch screen uses a pair of infrared emitters and infrared receivers to detect whether there is a block between the two devices to identify the touch. At present, most scanning methods are full scan, that is, all infrared devices must work in each scanning cycle, and in the vertical After scanning in the vertical direction, the distribution of the touch area has been basically determined. Using a full scan in the horizontal direction not only wastes resources, but also takes a long scan cycle, which may easily cause delays in touch response.

Method used

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  • Touch positioning method and device for infrared touch screen
  • Touch positioning method and device for infrared touch screen
  • Touch positioning method and device for infrared touch screen

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[0053] In order to more clearly understand the above-mentioned purposes, features and advantages of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. The features in can be combined with each other.

[0054] In the following description, a lot of specific implementation details are set forth in order to fully understand the present invention. The described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, those skilled in the art All other embodiments obtained by the skilled person without creative work belong to the protection scope of the present invention.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terminology used herein in the descri...

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Abstract

The invention provides a touch positioning method and device for an infrared touch screen. Divergent scanning is performed on the infrared touch screen in a first direction to obtain all areas under scanning which are to be further scanned in a second direction, wherein each scanning area includes a quasi-touch area; all the areas under scanning are scanned at a preset scanning angle in the seconddirection to obtain real touch areas, wherein the first direction is perpendicular to the second direction. Scanning in the second direction only requires scanning all the areas under scanning with no full scanning required, and therefore, the scanning period can be shortened.

Description

technical field [0001] The invention belongs to the technical field of infrared touch screen touch recognition, and in particular relates to an infrared touch screen touch positioning method and device. Background technique [0002] This section is intended to provide a background or context for implementations of the invention that are set forth in the claims and detailed description. The descriptions herein are not admitted to be prior art by inclusion in this section. [0003] The infrared touch screen uses a pair of infrared emitters and infrared receivers to detect whether there is a block between the two devices to identify the touch. At present, most scanning methods are full scan, that is, all infrared devices must work in each scan cycle, and in the vertical After scanning in the vertical direction, the distribution of the touch area has been basically determined. Using a full scan in the horizontal direction not only wastes resources, but also takes a long scan cy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/042G06F3/041
CPCG06F3/0418G06F3/0421G06F2203/04109
Inventor 谭晓青程思铤
Owner JINAN UNIVERSITY
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