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Method for improving linearity of interpolated pixel

A linearity, pixel technology, applied in the input/output process of data processing, instruments, electrical digital data processing, etc., can solve problems such as poor pixel linearity

Inactive Publication Date: 2011-04-27
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method produces serious errors when the position of the touch point falls between the sensors, and the linearity of the pixels is not good

Method used

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  • Method for improving linearity of interpolated pixel
  • Method for improving linearity of interpolated pixel
  • Method for improving linearity of interpolated pixel

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Experimental program
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Embodiment Construction

[0015] Please refer to figure 1 and figure 2 , figure 1 A schematic diagram showing a sensor of a touch device, figure 2 A schematic diagram showing pixels occupied by a sensor. A touch device with multiple sensors, such as a touch panel, is shown in the figure as a nine-square grid with adjacent sensors 1-9 arranged in three rows and three columns in the touch device, wherein the sensor located in the center of the nine-square grid The detector is the position where the Touch point is located. When a touch object, such as a finger, is pressed on the touch device, the touch point 5 and the surrounding sensors S2_min, Y_min, S1_min, X_middle, X_min, S1_middle, Y_middle, S2_middle will all sense the voltage difference, and the touch device has An analog-to-digital converter (ADC) then converts the voltage difference into a numerical output as calculation data. Usually the touch point Touch point has the largest ADC value. On the horizontal axis, the ADC value of the senso...

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PUM

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Abstract

The invention relates to a method for improving the linearity of an interpolated pixel, applicable to a touch device provided with multiple sensors. The method comprises the steps as follows: sensing multiple voltage differences by sensors which are arranged in a sudoku form by taking a touch point as the center; respectively calculating a horizontal axis vector, a longitudinal axis vector, a first inclined vector and a second inclined vector according the voltage differences; allocating the first inclined vector and the second inclined vector to a horizontal axis and a longitudinal axis; and calculating a horizontal axis value and a longitudinal axis value according to the sum of vectors distributed on the horizontal axis and the vertical axis, so as to determine the position of an interpolated pixel. The method in the invention can effectively reduce judgement error of an interpolated pixel point and improves the linearity of pixel display.

Description

technical field [0001] The present invention relates to a method for improving the linearity of interpolated pixels, and in particular to a method for improving the linearity of interpolated pixels applicable to a touch device. Background technique [0002] The touch screen display (Touch Screen) allows the user to operate the host computer by lightly touching the pattern or text on the computer display screen with his finger, thus getting rid of the keyboard and mouse operation and making the human-computer interaction more convenient and concise. , At present, it is mainly used in public places such as information inquiry, electronic games, ordering songs and dishes, multimedia teaching, and pre-sale of air tickets / train tickets. [0003] With the development of touch screen technology, people have higher and higher requirements for touch precision. Interpolation is an image processing method that can increase or decrease the number of pixels for a digital image. Some di...

Claims

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Application Information

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IPC IPC(8): G06F3/041
Inventor 黄敬智杨竣崴许育民郑咏泽
Owner AU OPTRONICS CORP
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