Screen positioning algorithm of four-wire resistance type touch screen

A positioning algorithm and touch screen technology, applied in calculation, electrical digital data processing, input/output process of data processing, etc., can solve problems such as inaccurate clicking, inconvenient use, misoperation, etc., and achieve accurate clicking without mistakes The effect used by the operation

Inactive Publication Date: 2010-02-10
SHANGHAI WINGTECH ELECTRONICS TECH
View PDF4 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The screen touch input method will inevitably encounter a problem of whether the touch point and the display area are accurately associated and matched. If

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Screen positioning algorithm of four-wire resistance type touch screen
  • Screen positioning algorithm of four-wire resistance type touch screen
  • Screen positioning algorithm of four-wire resistance type touch screen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The preferred embodiments of the present invention are given below in conjunction with the accompanying drawings to describe the technical solution of the present invention in detail.

[0025] A screen positioning algorithm for a 4-wire resistive touch screen provided by the invention comprises the following steps:

[0026] (1) Preliminary generation of matching scale factors during fixed-point calibration;

[0027] (2) Dynamic correction of the matching scale factor during user use;

[0028] (3) Coordinate transformation from touch point to display pixel point;

[0029] (4) Software code implementation of the algorithm.

[0030] The present invention provides a preferred embodiment to further illustrate the inventive method. The embodiment of the present invention is carried out on the GSM baseband chip 6600D chip platform of the mobile phone of Spreadtrum Communication Co., Ltd., and the platform software is the application software based on the 6600D platform. The...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a screen positioning algorithm of a four-wire resistance type touch screen, comprising the steps of S1, initial generation of matching proportional factors in fixed point calibration; S2, dynamic modification of the matching proportional factors in the use process of a user; S3, coordinate transformation from touch point to display pixel point; and S4, software code realization of the algorithm. The invention realizes a specific software algorithm that a click point for clicking the touch screen and a display area on a display screen can correctly and correlatively match.

Description

technical field [0001] The invention relates to a resistive touch screen technology, in particular to a screen positioning algorithm for a 4-wire resistive touch screen. Background technique [0002] In the environment of continuous development of personal mobile communication technology, mobile phones are becoming more and more important to people, and the man-machine exchange interface of mobile phones is also becoming more and more abundant, and the control and operation methods are also becoming more and more humanized. . Specific to the input control of the mobile phone, now the common control input method is to touch the screen in addition to the button. The screen touch input method has almost become the standard configuration of mobile phones, and people like this convenient and flexible input method very much. The screen touch input method will inevitably encounter a problem of whether the touch point and the display area are accurately associated and matched. If ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06F3/045
Inventor 梁仲华
Owner SHANGHAI WINGTECH ELECTRONICS TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap