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Calibration algorithm for inverted X-Y direction compatibility of QVGA-screen (Quarter Video Graphic Array) mobile phone using four-line resistance touch screen

A technology of touch screen and wire resistance, which is applied in the field of calibration algorithm compatible with X and Y direction inversion, can solve the problems of unusability, and achieve the effect of speeding up and reducing costs

Active Publication Date: 2011-08-17
HUAQIN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the same mobile phone is equipped with touch screens from different manufacturers, the wiring terminals must be completely consistent with the circuit board, otherwise it cannot be used

Method used

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  • Calibration algorithm for inverted X-Y direction compatibility of QVGA-screen (Quarter Video Graphic Array) mobile phone using four-line resistance touch screen
  • Calibration algorithm for inverted X-Y direction compatibility of QVGA-screen (Quarter Video Graphic Array) mobile phone using four-line resistance touch screen
  • Calibration algorithm for inverted X-Y direction compatibility of QVGA-screen (Quarter Video Graphic Array) mobile phone using four-line resistance touch screen

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Such as figure 1 Shown, a kind of QVGA screen mobile phone of the present invention is compatible with the calibration algorithm of X and Y direction inversion when using 4-wire resistive touch screen, comprises the following steps

[0031] (A) Calibration point 1 appears at the beginning of touch screen calibration;

[0032] (B) Calibration points 2-5 appear in sequence after clicking, and record the value of the touch screen;

[0033] (C) Determine whether the absolute value of the x-coordinate difference between point (2) and point (1) is less than the absolute value of the y-coordinate between point (2) and point (1), if so, execute step (D), if not, execute step (F);

[0034] (D) The X driver is opposite to the Y driver, exchanging the x and y coordinates of the touch screen value;

[0035] (E) Calibration points 2-5 appear in sequence after clicking, and record the value of the touch screen;

[0036] (F) judging whether P3.x

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PUM

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Abstract

The invention discloses a calibration algorithm for inverted compatibility mobile phone using a screen in 240x320 resolution ratio, wherein the calibration is realized by sequentially pressing down a plurality of calibration points through a touch pen. If the touch pen is presses down, actual coordinates of each point can be read, a base drive program is regulated, X-coordinate and Y-coordinate are exchanged, parameters are kept, a calibration process is restarted, four lines of a touch screen and four-line wiring terminals of a circuit board can be differently matched, and the touch screen can be regularly used after once calibration. In the aspects of material replacement, product maintenance and the like, the calibration algorithm is beneficial to speed acceleration and cost reduction.

Description

technical field [0001] The invention relates to a mobile phone control method, in particular to a calibration algorithm compatible with X and Y direction inversions when a QVGA screen mobile phone uses a 4-wire resistive touch screen. Background technique [0002] The mobile phone was first created by the American IT giant Motorola. At present, the so-called second-generation mobile phone (2G) is the most widely used in the world. It is mainly based on the European GSM standard and the American CDMA standard. In addition, there is also Motorola's IDEN network standard. , PDC used in Japan, etc. They are all in digital format. In addition to voice communication, they can also send and receive short messages, wireless application protocols, etc. In mainland China and Taiwan, GSM is the most popular, and CDMA mobile phones are also very popular. The whole industry is currently in the process of migrating to the third generation mobile phone (3G). [0003] In addition to typi...

Claims

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Application Information

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IPC IPC(8): G06F3/045H04M1/725H04M1/724
Inventor 董强
Owner HUAQIN TECH CO LTD
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