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Self-correcting method and self-correcting system for special-shaped touch screen

A touch screen and self-calibration technology, which is applied in the direction of instruments, electrical digital data processing, and data processing input/output process, etc., can solve the problems of inability to perform accurate calibration, unable to use regular touch screen self-calibration methods, etc., to improve usability, Effect of reducing nonlinear error and high precision

Inactive Publication Date: 2013-01-23
SHANGHAI DIANJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, for special-shaped touch screens, due to their irregularities, if the above method is used, it is often impossible to perform accurate corrections, so the self-calibration method of regular touch screens cannot be used.

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  • Self-correcting method and self-correcting system for special-shaped touch screen

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Embodiment Construction

[0038] The following describes the implementation of the present invention through specific specific examples in conjunction with the accompanying drawings. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific examples, and various details in this specification can also be based on different viewpoints and applications, and various modifications and changes can be made without departing from the spirit of the present invention.

[0039] figure 1 It is a flow chart of the steps of a self-calibration method for a special-shaped touch screen of the present invention. In a preferred embodiment of the present invention, the special-shaped touch screen is a trapezoidal-shaped resistive special-shaped touch screen, and the specific size of the screen can be adjusted. For example, a touch screen changed ...

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Abstract

The invention discloses a self-correcting method for a special-shaped touch screen and a self-correcting system for the special-shaped touch screen. The method comprises the following steps of: defining a main touch range of the touch screen, carrying out multi-point correcting text on different y values on two lines arranged at two sides of the x-axis direction within the touch range to obtain a plurality of sets of AD values, and storing the data obtained in a testing way into a nonlinear correcting table; sampling arbitrary points on the touch screen, to obtain the AD value of the arbitrary point; and inquiring the nonlinear correcting table based on the AD value of the arbitrary point, and carrying out nonlinear correcting computation by a nonlinear correcting rule according to an inquiring result to obtain linearized value of the arbitrary point. The self-correcting method is exact to correct, so that the positioning accuracy of the special-shaped touch screen can be improved.

Description

Technical field [0001] The invention relates to a touch screen self-correction method and system, in particular to a special-shaped touch screen self-correction method and system. Background technique [0002] Touch screen is a commonly used device that replaces keyboard and mouse in electronic equipment terminals and human-computer interaction interfaces. It has the advantages of simple operation, intuitive operation, high positioning accuracy, convenient function definition, and flexible software programming. [0003] The general touch screen input system is composed of touch detection components, touch screen controllers and microcontrollers; touch detection components are installed in front of the display screen to detect the user’s touch position and send them to the touch screen controller after acceptance; while the main function of the touch screen controller is from The touch point detection device receives the touch information, converts it into contact coordinates, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041
Inventor 陈倩倩欧素娜张延迟李龙徐鹏陆永耕
Owner SHANGHAI DIANJI UNIV
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