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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
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  • 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 the click point cannot be accurately matched with the display area, there will be inaccurate clicks, misoperations, and incorrect use. Convenience and so on

Method used

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  • 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

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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...

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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

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Application Information

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IPC IPC(8): G06F3/045
Inventor 梁仲华
Owner SHANGHAI WINGTECH ELECTRONICS TECH
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