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Touch screen calibrating method and device

A calibration method and touch screen technology, applied in the direction of instrument, electrical digital data processing, data processing input/output process, etc., can solve the problem of irregularity and so on

Active Publication Date: 2015-01-07
HUIZHOU TCL MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The present invention mainly solves the technical problem that the user needs to enter the calibration interface for calibration operation from time to time when the user calibrates the touch screen, and provides a simple and feasible touch screen calibration method and device

Method used

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  • Touch screen calibrating method and device
  • Touch screen calibrating method and device

Examples

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Embodiment Construction

[0025] see Figure 4 , is a schematic flow chart of one embodiment of the touch screen calibration method of the present invention. In this embodiment, the touch screen calibration method includes:

[0026] Step 401 , when the touch screen is touched to unlock, acquire the touch screen coordinates of the first touch point P1 and the second touch point P2 respectively. This step 401 is different from the prior art in that: when the user touches to unlock, operations such as selecting coordinates for touch screen calibration are performed synchronously in the background. The coordinate selection method of the first touch point P1 and the second touch point P2 can be determined according to the actual situation, for example, on a straight line where the two diagonal lines of the touch screen are located, or on a straight line parallel to the diagonal lines. , or select any two different points on the screen. At the same time, in order to ensure the accuracy of the calibration,...

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Abstract

A touch screen calibrating method and a device are provided. The method comprises: obtaining touch screen coordinates of a first touch point and a second touch point respectively when a touch screen is touched to be unlocked; calculating and obtaining calibration slopes according to the touch screen coordinates of the first touch point and the second touch point; and replacing original reference slopes by the calibration slopes as new reference slopes. In this invention, the touch screen calibration is performed in the background and simultaneously with the unlocking process, and troublesome operations for separate calibration are reduced. In addition, there is no error, including drift deviation and the like, with the coordinates position calculated according to the new calibrated reference slopes, and an operation accuracy of the user is improved.

Description

technical field [0001] The invention relates to the technical field of touch screens, in particular to a touch screen calibration method and device. Background technique [0002] Touch screens, especially resistive touch screens, are widely used in various types of devices. The structure of the resistive touch screen consists of two transparent layers, the inner surface of which is evenly coated with a layer of conductive material. When the surface of the resistive touch screen is not under enough pressure, there will be no contact between the top layer and the bottom layer. Taking the four-wire resistive touch screen as an example, its equivalent circuit is as follows figure 1 shown. From figure 1 It can be seen that in the case of no touch, it is non-conductive, so the impedance to the ground cannot be obtained; when the surface of the resistive touch screen is under enough pressure, contact will occur between the top layer and the bottom layer, so that the resistive la...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/041
CPCG06F3/045G06F3/0416G06F3/0418
Inventor 帅军张靖
Owner HUIZHOU TCL MOBILE COMM CO LTD
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