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Method for dynamic adjustment of analog-to-digital conversion parameters of touch panel

An analog-to-digital conversion and dynamic adjustment technology, which is used in electrical digital data processing, input/output process of data processing, instruments, etc., and can solve the problems of not reporting coordinates, failing to return to normal values, and falsely reporting coordinates.

Active Publication Date: 2016-07-06
ELAN MICROELECTRONICS CORPORATION
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Problems solved by technology

[0006] Therefore, the main purpose of the present invention is to provide a method for dynamically adjusting the analog-to-digital conversion parameters of the touch panel, so as to solve the problem of changing too many analog-to-digital conversion parameters due to environmental noise interference under the normal operation mode of the touch panel, and it is too late to adjust back. The normal value before being disturbed caused the problem of misreporting coordinates or not reporting coordinates

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  • Method for dynamic adjustment of analog-to-digital conversion parameters of touch panel
  • Method for dynamic adjustment of analog-to-digital conversion parameters of touch panel
  • Method for dynamic adjustment of analog-to-digital conversion parameters of touch panel

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[0032] In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0033] The technical means adopted by the present invention to achieve the intended invention purpose are further described below in conjunction with the drawings and preferred embodiments of the present invention.

[0034] See first figure 1 , is a flow chart of the first preferred embodiment of the method for dynamically adjusting analog-to-digital conversion parameters of the present invention, which includes:

[0035] Preset a sensing threshold S10;

[0036] Reading the sensing signal, and judging whether the sensing value of the sensing signal exceeds the sensing threshold S11;

[00...

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Abstract

The invention discloses an analog-digital conversion parameter dynamic adjusting method of a touch control panel. Firstly, an induction critical value is set in advance and an induction signal is read to determine whether the induction value of the induction signal exceeds the critical value, and the induction signal is compensated through a w times (w>1) analog-digital conversion parameter level if the induction value of the induction signal exceeds the critical value. Therefore, the analog-digital conversion parameter level is adjusted at least once to make the analog-digital conversion parameter recover to be the normal value before interference more quickly, so that the induction signal can be compensated, the analog-digital conversion parameter is prevented from being overly interferred by environment noise, and abnormities of the converted induction signal can be reported. Therefore, correctness of return of a coordinate is improved if the induction signal is abnormal.

Description

technical field [0001] The invention relates to a method for adjusting an analog-to-digital conversion parameter of a touch panel, in particular to a method for dynamically adjusting an analog-to-digital conversion parameter of a touch panel. Background technique [0002] In order to ensure that the touch panel avoids environmental noise interference as much as possible when using the touch panel, the analog parameter adjustment (RoughCalibration) program will be performed when the touch panel is turned on or when the sleep mode is switched back to the normal mode, including the analog-to-digital conversion parameter (Offset), the reference value (Base ) and so on to adjust the value of analog characteristics. [0003] The aforementioned analog-to-digital conversion parameters are that when the touch panel generates an analog sensing signal when an object is touched, the controller of the touch panel will convert a corresponding sensing signal (ADCRAWDATA) according to the c...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/041G06F3/044
CPCG06F3/041G06F3/044
Inventor 黄荣寿吴珈穆洪泽伦陈顺益
Owner ELAN MICROELECTRONICS CORPORATION
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