CN102520819A - Automatic calibration method of single-layer ITO (indium tin oxide) - Google Patents
Automatic calibration method of single-layer ITO (indium tin oxide) Download PDFInfo
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- CN102520819A CN102520819A CN2011103808596A CN201110380859A CN102520819A CN 102520819 A CN102520819 A CN 102520819A CN 2011103808596 A CN2011103808596 A CN 2011103808596A CN 201110380859 A CN201110380859 A CN 201110380859A CN 102520819 A CN102520819 A CN 102520819A
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Abstract
The invention relates to an automatic calibration method of single-layer ITO (indium tin oxide). The automatic calibration method comprises real-time acquisition data, a reference value, a lowpass filtering value and a calibration value; the method is characterized in that automatic calibration of the whole single-layer ITO is completed mainly through calibrating the single-layer ITO in power-on and power-off states respectively. The method provided by the invention is not only simple, but also is suitable for different environments, can be used for quickly and accurately calibrating the real-time acquisition data, and can not generate faultless system halted or other abnormal phenomena because of external interferences.
Description
Technical field
the present invention relates to the automatic calibrating method of ITO, refer in particular to the automatic calibrating method of individual layer ITO.
Background technology
so-called ITO (indium tin oxide) is a kind of critical material that is used to produce LCD, and at present, it has all had in fields such as instrument and meter, computing machine, electronic watch, game machine and household electrical appliance very widely uses.The capacitive touch screen of big heat also is to utilize ITO to accomplish the action that detecting touches on the market in recent years, and in order to practice thrift cost, present stage, the ITO of capacitive touch screen all adopted the individual layer Butut, and its electrode block is generally triangle or rectangle.
are though above-mentioned individual layer ITO can realize function and the effect the same with double-deck ITO; But the requirement according to equipment still is that needs are calibrated automatically in use; So-called calibration automatically is exactly the target that will reach through the automatic realization of the functional module of using system, guarantees that according to performance requirement these assemblies are measured and the accuracy and reliability of testing apparatus like this.In the process that touch-control is used, can be faced with the interference in various external world equally; How to keep the permanent good operation of equipment just to need good automatic calibration function; So just saved more man power and material, guaranteed that simultaneously product is better brought into play in application end.
are because the capacitance plate that is made up of individual layer ITO can receive some interference unavoidably in the external world; Such as water has capacitive impurity with some other; If do not calibrate timely; Will have a strong impact on the effect of line, more severe patient causes erroneous judgement or crashes, and scraps thereby then directly be judged as in application end.In order to reduce this unnecessary loss, we need in our touch-control calculation, to introduce automatic calibration function timely.
Summary of the invention
The actual technical matters to be solved of
the present invention is how a kind of convenience automatic calibrating method of simple individual layer ITO again is provided.
are in order to realize above-mentioned purpose of the present invention; The invention provides the automatic calibrating method of a kind of individual layer ITO; Comprise real-time image data, reference value, low-pass filter value and calibration value; Its step is following: when said individual layer ITO powers on, at first start real-time image data, detect the influence value of said data; Next is provided with a reference value, and said reference value is used to follow the tracks of said influence value; Then, poor according to said influence value and said reference value draws said calibration value, accomplishes individual layer ITO and goes up electric calibration; After said individual layer ITO powers on, detect the existence whether touch object is arranged on the said individual layer ITO earlier,, then abandon calibration if do not exist; If exist, and, then continue to judge within a certain period of time whether each calibration value changes,, then think interference value, continue so to follow the tracks of said influence value and recomputate calibration value if do not change if said influence value is not more than said reference value; If change, then said reference value is constant, effectively calculates according to said calibration value.
The automatic calibrating method of
individual layer ITO of the present invention; When powering on to said individual layer ITO with power on after state calibrate respectively; So it is not only simple; And be applicable to various environment, and can calibrate real-time image data fast and accurately, can not produce not guilty the deadlock or other abnormal occurrence because of the interference in the external world.
Description of drawings
Fig. 1 is the process flow diagram of calibrating automatically according to individual layer ITO of the present invention.
Embodiment
are further described the present invention below in conjunction with accompanying drawing and embodiment.
The automatic calibrating method of
individual layer ITO of the present invention needs to introduce four variablees, and it comprises real-time image data, low-pass filter value, reference value and calibration value.Said real-time image data is used for storing the real-time capacitance that collection comes; Said low-pass filter value is exactly a filter value that obtains through the row LPF through the data to real-time collection, to prevent external interference the data of real-time collection is produced interference.So said low-pass filter value can be carried out continual visit relatively, under the prerequisite that touch object exists, when finding relatively that at every turn numerical value all is under the identical situation, just need calibrate automatically; Whether said reference value detection at any time has the existence of interference source; Said calibration value is through the value that needs practical application after the calibration.
please refer to shown in Figure 1, and individual layer ITO according to the invention calibration automatically is divided into two stages, when powering on and after powering on.When said individual layer ITO powers on, at first start real-time image data, detect the influence value of said data; Secondly, a reference value is set, and said reference value is used to follow the tracks of said influence value; Then, poor according to said influence value and said reference value draws said calibration value, accomplishes the last electric calibration of individual layer ITO; After said individual layer ITO powered on, whether said individual layer ITO on had touch object existence like finger, if do not exist, then abandon calibration if detecting earlier; If exist, and if said influence value is not more than said reference value, continue then to judge within a certain period of time whether each calibration value changes that said certain hour user can set as required in advance.Owing to can carry out identical lasting interference in some zones generally speaking as an interference source, therefore, then think interference value if do not change, continue so to follow the tracks of said influence value and recomputate calibration value; If change, then said reference value is constant, effectively calculates according to said calibration value.Above-mentioned if said influence value greater than said reference value, then can directly filter interfering data according to said low-pass filter value, realize calibration automatically.
No matter whether
when individual layer ITO powers on, have touch object to exist specifically, all need at first start real-time image data, detects the influence value of said data; Next is provided with a reference value, and said reference value is used to follow the tracks of said influence value; Poor according to said influence value and said reference value draws said calibration value then, accomplishes the last electric calibration of individual layer ITO.After said individual layer ITO powered on, whether said individual layer ITO on had touch object exist, if do not exist, then abandon calibration if at first detecting, and the calibration value that draws when utilizing said individual layer ITO to power on effectively calculates; If when having touch object to touch said individual layer ITO; Continue to judge the size of said influence value and said reference value, if said influence value is not more than said reference value, and in preset time; Each calibration value does not all have to change; Show that then said individual layer ITO has interference in the external world, back that powers on, as being interference or the interference of water droplet even the interference of extraneous other object etc. of finger, the data that detect this moment are just thought interference value; Need not write down its numerical value, but continue to follow the tracks of said influence value and recomputate calibration value; If said influence value is being not more than under the situation of said reference value, in preset time, said calibration value changes, and then said reference value is constant, effectively calculates according to said calibration value.Above-mentioned if said influence value greater than said reference value, then can directly filter interfering data according to said low-pass filter value, realize calibration automatically.
influence value of the present invention is reverse parabolic shape; And automatic calibrating method of the present invention to said individual layer ITO when powering on power on after state calibrate respectively; So not only simple, and be applicable to various environment, can calibrate real-time image data fast and accurately; So that the touch-control chip on the individual layer ITO can operate well, can not produce not guilty the deadlock or other abnormal occurrence because of the interference in the external world.
Claims (8)
1. the automatic calibrating method of an individual layer ITO comprises real-time image data, reference value, low-pass filter value and calibration value, and its step is following:
When said individual layer ITO powers on, at first start real-time image data, detect the influence value of said data;
Next is provided with a reference value, and said reference value is used to follow the tracks of said influence value;
Then, poor according to said influence value and said reference value draws said calibration value, accomplishes individual layer ITO
Last electric calibration;
After said individual layer ITO powers on, detect the existence whether touch object is arranged on the said individual layer ITO earlier, if
Do not exist, then abandon calibration; If exist, and, then continue to judge within a certain period of time whether each calibration value changes,, then think interference value if do not change if said influence value is not more than said reference value,
Continue so to follow the tracks of said influence value and recomputate calibration value; If change, then said reference value is constant, effectively calculates according to said calibration value.
2. automatic calibrating method as claimed in claim 1 is characterized in that: if said influence value greater than said reference value, then can directly filter interfering data according to said low-pass filter value, realize calibration automatically.
3. automatic calibrating method as claimed in claim 1 is characterized in that: said real-time image data is used for storing the real-time capacitance that collection comes.
4. like claim 1 or 3 described automatic calibrating methods, it is characterized in that: said low-pass filter value is exactly a filter value that obtains through the row LPF through the data to real-time collection.
5. automatic calibrating method as claimed in claim 1 is characterized in that: whether said reference value detection at any time has the existence of interference source.
6. automatic calibrating method as claimed in claim 1 is characterized in that: said calibration value is through the value that needs practical application after the calibration.
7. automatic calibrating method as claimed in claim 1 is characterized in that: said certain hour user can set in advance.
8. automatic calibrating method as claimed in claim 1 is characterized in that: described influence value is reverse parabolic shape.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103808596A CN102520819A (en) | 2011-11-25 | 2011-11-25 | Automatic calibration method of single-layer ITO (indium tin oxide) |
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| CN2011103808596A CN102520819A (en) | 2011-11-25 | 2011-11-25 | Automatic calibration method of single-layer ITO (indium tin oxide) |
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Cited By (7)
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| WO2014032474A1 (en) * | 2012-08-30 | 2014-03-06 | 华为终端有限公司 | Method for calibrating capacitive touchscreen, and capacitive touch apparatus |
| CN104063100A (en) * | 2013-03-18 | 2014-09-24 | 阿尔卑斯电气株式会社 | Static capacitance type touchpad |
| CN105094434A (en) * | 2015-08-12 | 2015-11-25 | 江苏惠通集团有限责任公司 | Gesture recognition environment calibration method and system and electronic device |
| CN103019488B (en) * | 2012-12-10 | 2016-03-30 | 广东欧珀移动通信有限公司 | Capacitive touch device, touch control controller and touch control identification method |
| CN106095162A (en) * | 2016-05-30 | 2016-11-09 | 京东方科技集团股份有限公司 | Capacitance self-calibrating device, method and touch control display apparatus |
| CN107632730A (en) * | 2017-09-13 | 2018-01-26 | 广州视源电子科技股份有限公司 | Obtain method, apparatus, storage medium and the touch display system of touch-screen benchmark data |
| WO2018232695A1 (en) * | 2017-06-22 | 2018-12-27 | 深圳市汇顶科技股份有限公司 | Method and apparatus for updating current reference value of touch screen, touch screen and electronic terminal |
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| WO2014032474A1 (en) * | 2012-08-30 | 2014-03-06 | 华为终端有限公司 | Method for calibrating capacitive touchscreen, and capacitive touch apparatus |
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| CN104063100A (en) * | 2013-03-18 | 2014-09-24 | 阿尔卑斯电气株式会社 | Static capacitance type touchpad |
| CN105094434A (en) * | 2015-08-12 | 2015-11-25 | 江苏惠通集团有限责任公司 | Gesture recognition environment calibration method and system and electronic device |
| CN105094434B (en) * | 2015-08-12 | 2018-05-18 | 江苏惠通集团有限责任公司 | A kind of gesture identification environment calibration method, system and electronic equipment |
| CN106095162A (en) * | 2016-05-30 | 2016-11-09 | 京东方科技集团股份有限公司 | Capacitance self-calibrating device, method and touch control display apparatus |
| CN106095162B (en) * | 2016-05-30 | 2019-02-19 | 京东方科技集团股份有限公司 | Capacitance self-calibrating device, method and touch control display apparatus |
| WO2018232695A1 (en) * | 2017-06-22 | 2018-12-27 | 深圳市汇顶科技股份有限公司 | Method and apparatus for updating current reference value of touch screen, touch screen and electronic terminal |
| CN109564481A (en) * | 2017-06-22 | 2019-04-02 | 深圳市汇顶科技股份有限公司 | Update method, device, touch screen and the electric terminal of touch screen present reference value |
| CN107632730A (en) * | 2017-09-13 | 2018-01-26 | 广州视源电子科技股份有限公司 | Obtain method, apparatus, storage medium and the touch display system of touch-screen benchmark data |
| WO2019052051A1 (en) * | 2017-09-13 | 2019-03-21 | 广州视源电子科技股份有限公司 | Method and device for obtaining touch screen reference data, storage medium and touch display system |
| CN107632730B (en) * | 2017-09-13 | 2020-04-07 | 广州视源电子科技股份有限公司 | Method and device for acquiring reference data of touch screen, storage medium and touch display system |
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Application publication date: 20120627 |