CN102830875A - Method for improving electrostatic resistance of capacitive screen by filtering algorithm - Google Patents
Method for improving electrostatic resistance of capacitive screen by filtering algorithm Download PDFInfo
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- CN102830875A CN102830875A CN2012102839676A CN201210283967A CN102830875A CN 102830875 A CN102830875 A CN 102830875A CN 2012102839676 A CN2012102839676 A CN 2012102839676A CN 201210283967 A CN201210283967 A CN 201210283967A CN 102830875 A CN102830875 A CN 102830875A
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Abstract
Disclosed is a method for improving electrostatic resistance of a capacitive screen by filtering algorithm. The capacitive touch screen is disposed on an electronic device. The method includes the steps: firstly, setting an upper limit number X of interrupt pulse times which are reported to a capacitive touch screen control IC (integrated circuit) module by the capacitive touch screen in unit time; secondly, allowing the capacitive touch screen control IC module to cyclically detect in real time the interrupt pulse times Y reported by the capacitive touch screen in unit time; thirdly, comparing X to Y, returning to the step 2 if X is larger than Y, allowing the capacitive touch screen control IC transmits data to a master chip for processing, and executing the step 4 if X is not larger than Y; fourthly, filtering to remove all the data transmitted in the step 3 before reporting to the master chip. The mass abnormal data generated by the capacitive touch screen are removed by filtering when the capacitive touch screen generates static electricity, so that the electrostatic resistance of the capacitive touch screen of the started electronic device is improved and false triggering caused by static jamming is avoided.
Description
Technical field
The present invention relates to a kind of capacitive touch screen antistatic technology, particularly relate to a kind of method that adopts filtering algorithm to improve the capacitance plate antistatic property.
Background technology
In the prior art, have the electronic equipment of capacitive touch screen, corresponding to the antistatic effect that improves capacitive touch screen; The anti-static ability of the present monomer of capacitive touch screen can reach 15KV and more than; But use in case install in the electronic equipment; The one side that particularly electronic equipment is had a capacitive touch screen is buckled on desktop or other objects, but at double the decline of its anti-static ability.
Static discharge is to the general characteristic of capacitive touch screen influence, and static is beaten after on the capacitive touch screen, can cause capacitive touch screen to produce large-area data exception, at this moment, and through to the large tracts of land abnormal data.Existing electronic equipment is in handling electrostatic prevention; All in electronic equipment, increase corresponding electrostatic prevention device; As during the ESD (abbreviation of English Electro-Static discharge, Chinese is static release) reaching the effect of capacitive touch screen in the corresponding protection electronic equipment, but this measure has brought the increase cost for the manufacturer; Under the situation that particularly social resources are more and more shorter; How to reduce Material Cost, and can effectively improve the capacitive touch screen antistatic effect, be the technical issues that need to address of the present invention.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art; A kind of method that adopts filtering algorithm to improve the capacitance plate antistatic property is provided; Through being produced the large tracts of land abnormal data when producing static, capacitive touch screen carries out filtering; Reach and promote the antistatic effect of capacitive touch screen under the electronic equipment open state, and the phenomenon of the false triggering that is caused by electrostatic interference.
In order to achieve the above object; The technical scheme that the present invention adopts is, a kind of method that adopts filtering algorithm to improve the capacitance plate antistatic property, and described capacitance plate is a capacitive touch screen; Capacitive touch screen is arranged on the electronic equipment; And electronic equipment is provided with the antistatic treatment circuit, and described circuit comprises master chip, reaches and the interconnective touch-screen control of master chip IC module, and described method step is following:
Step 1, capacitive touch screen reports capacitive touch screen control IC module interruption pulse number of times in the unit interval upper limit number of times X is set;
Step 2, the circulation of capacitive touch screen control IC module detect the interruption pulse number of times Y that capacitive touch screen reported in the unit interval in real time;
Step 3, X and Y are compared, if X greater than Y, then returns step 2, the IC of capacitive touch screen control simultaneously passes to master chip with data and handles; Otherwise then execution in step 4;
Step 4, with data all filterings before reporting master chip of step 3 transmission, master chip does not respond the request of touch.
Further, the described interruption of step 1 is for when static is perhaps pointed the touch mode capacitive touch-screen, and the capacitance of capacitive touch screen changes, and touch-screen control IC module detects the interruption that capacitance variation produces.
Further, the quantity of point in the corresponding capacitive touch screen control of described interruption times IC unit interval interscan touch-screen electric capacity changes.
Further, the detection of described interruption times for the whole screen of capacitive touch screen is carried out.
Further, the upper limit number of times X of said interruption pulse number of times is the threshold values number of times of master chip to interrupting handling, and surpasses upper limit number of times X and then interrupt data is filtered out, otherwise handle interrupting.
Further, the circulation of the described capacitive touch screen control of step 2 IC module detects in real time and comprises:
A. detect whether static or finger touch mode capacitive touch-screen are arranged;
B. no change returns step a detection, changes and then detects the corresponding point of interruption;
C. the interrupt number of capacitive touch screen in the unit of account time, and statistics interruption times Y.
Further, step a judges that capacitive touch screen has no touch to comprise:
The rest capacitance value that capacitive touch screen is set is R;
The capacitance of senses touch capacitive touch screen is M;
The value that compares R and M;
Do not exceed corresponding difference, then capacitive touch screen shows as no touch, otherwise expression touches effectively.
Further, the described master chip of step 3 is treated to data operational processes is carried out in the action of static or the generation of finger contact touch-screen, gets into corresponding interrupt handling routine.
Further, described electronic equipment is mobile phone, MP3, MP4, E-book reader or palm PC.
Compared with prior art; The invention has the beneficial effects as follows: in testing process in static or finger contact; Capacitance can change, and when capacitance variations surpassed certain value, promptly capacitive touch screen IC detected this variation and will produce corresponding interruption; Through comparing interruption times and interruption times upper limit master chip judgment data amount and changing the threshold values scope accordingly to touch-screen control IC outage or expansion; With the protection corresponding devices, reach and promote the antistatic effect of capacitive touch screen under the electronic equipment open state, and the phenomenon of the false triggering that is caused by electrostatic interference.
Description of drawings
Fig. 1 is a method flow diagram of the present invention;
Fig. 2 is antistatic treatment circuit theory diagrams of the present invention.
Embodiment
Be elaborated with reference to accompanying drawing below in conjunction with embodiment, so that technical characterictic of the present invention and advantage are carried out more deep annotation.
Theory diagram of the present invention is as shown in Figure 2; A kind of method that adopts filtering algorithm to improve the capacitance plate antistatic property; Described capacitance plate is a capacitive touch screen; Capacitive touch screen is arranged on the electronic equipment, and electronic equipment is provided with the antistatic treatment circuit, and described circuit comprises master chip, and controls the IC module with the interconnective touch-screen of master chip.
The effect of master chip is the data processing centre (DPC) of whole electric equipment; The effect of touch-screen control IC is that the senses touch screen is gone up the changes in capacitance amount of each point and is translated into digital quantity; In the whole process, capacitive touch screen control IC detects the variable quantity of electric capacity on the touch-screen and is converted into digital quantity, is transferred to master chip, carries out corresponding data processing then.
Method flow diagram of the present invention is as shown in Figure 1, and described method step is following:
Step 1, capacitive touch screen reports capacitive touch screen control IC module interruption pulse number of times in the unit interval upper limit number of times X is set;
Step 2, the circulation of capacitive touch screen control IC module detect the interruption pulse number of times Y that capacitive touch screen reported in the unit interval in real time;
Step 3, X and Y are compared, if X greater than Y, then returns step 2, the IC of capacitive touch screen control simultaneously passes to master chip with data and handles; Otherwise then execution in step 4;
Step 4, with data all filterings before reporting master chip of step 3 transmission, master chip does not respond the request of touch.
Further, the described interruption of step 1 is for when static is perhaps pointed the touch mode capacitive touch-screen, and the capacitance of capacitive touch screen changes, and touch-screen control IC module detects the interruption that capacitance variation produces.
Further, the quantity of point in the corresponding capacitive touch screen control of described interruption times IC unit interval interscan touch-screen electric capacity changes.
Further, the detection of described interruption times for the whole screen of capacitive touch screen is carried out.
Further, the upper limit number of times X of said interruption pulse number of times is the threshold values number of times of master chip to interrupting handling, and surpasses upper limit number of times X and then interrupt data is filtered out, otherwise handle interrupting.
Further, the circulation of the described capacitive touch screen control of step 2 IC module detects in real time and comprises:
A. detect whether static or finger touch mode capacitive touch-screen are arranged;
B. no change returns step a detection, changes and then detects the corresponding point of interruption;
C. the interrupt number of capacitive touch screen in the unit of account time, and statistics interruption times Y.
Further, step a judges that capacitive touch screen has no touch to comprise:
The rest capacitance value that capacitive touch screen is set is R;
The capacitance of senses touch capacitive touch screen is M;
The value that compares R and M;
Do not exceed corresponding difference, then capacitive touch screen shows as no touch, otherwise expression touches effectively.
Further, the described master chip of step 3 is treated to data operational processes is carried out in the action of static or the generation of finger contact touch-screen, gets into corresponding interrupt handling routine.
Filtering algorithm of the present invention, the capacitor filtering same meaning of software filtering algorithm and hardware is exactly the filtering unwanted signal; Such as, if A is arranged in the software, then allow X to equal a value greater than B; Otherwise X equals the another one value in addition, is exactly a condition judgment, is understanding coming here.
Further, described electronic equipment is mobile phone, MP3, MP4, E-book reader or palm PC.
Capacitive touch screen among the present invention is particulate metal conductive materials that sticks layer of transparent at glass surface.When finger touch was on metal level, the electric capacity of contact will change, and made the oscillator frequency that is attached thereto change, and changed through survey frequency and can confirm the touch location acquired information.Capacitive touch screen can better be supported multi-point touch.Multi-point touch panel is different from traditional single-point touches screen, and the maximum characteristics of multi-point touch panel are can two hands, a plurality of fingers, even a plurality of people, the content of function screen simultaneously, convenient and hommization.
But in practical operation; Because when static or finger touch capacitive touch screen; Point of interruption number of times in unit interval is more; System is difficult to judgment processing, and capacitive touch screen reports the upper limit number of times X of capacitive touch screen control IC module interruption pulse number of times in the unit interval value sets according to anlistatig ability, then must judge through setting point of interruption number of times threshold values.
Capacitance plate itself is equivalent to an electric capacity in testing process; In the time of static or finger contact; Capacitance can change, and when capacitance variations surpassed certain value, promptly capacitive touch screen IC detected this variation and will produce corresponding interruption.Capacitive touch screen control this moment IC module is judged the point of interruption and is reported master chip and handles.Touch-screen control IC module after producing corresponding number of interruptions, master chip judgment data amount and to touch-screen control IC outage or enlarge the corresponding threshold values scope that changes, with the protection corresponding devices.
Such as, the first setting unit time has 40 points and above point data that unusual newspaper point takes place on capacitive touch screen, and this moment is with the data filtering; Static is beaten on screen, 45 some responses is arranged, at this moment; Capacitive touch screen control IC module reports master chip, and master chip is judged according to the value of setting, and surpasses 40 points; Do not accept deal with data, and after capacitive touch screen controlled IC module outage, once more electrification reset.When being lower than 40 points, master chip is made a response according to touch action and is got into corresponding program, for example application program or system program or other operation interfaces.The data of more than enumerating just for more detailed explanation the present invention, adjust according to touch screen performance in concrete practice by this numerical value.
Above content is to combine concrete preferred implementation to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.For one of ordinary skill in the art of the present invention, under the prerequisite that does not break away from the present invention's design, make simple change or optimization, all should be regarded as protection scope of the present invention.
Claims (9)
1. method that adopts filtering algorithm to improve the capacitance plate antistatic property; Described capacitance plate is a capacitive touch screen; Capacitive touch screen is arranged on the electronic equipment, and electronic equipment is provided with the antistatic treatment circuit, and described circuit comprises master chip, and controls the IC module with the interconnective touch-screen of master chip; It is characterized in that described method step is following:
Step 1, capacitive touch screen reports capacitive touch screen control IC module interruption pulse number of times in the unit interval upper limit number of times X is set;
Step 2, the circulation of capacitive touch screen control IC module detect the interruption pulse number of times Y that capacitive touch screen reported in the unit interval in real time;
Step 3, X and Y are compared, if X greater than Y, then returns step 2, the IC of capacitive touch screen control simultaneously passes to master chip with data and handles; Otherwise then execution in step 4;
Step 4, with data all filterings before reporting master chip of step 3 transmission, master chip does not respond the request of touch.
2. employing filtering algorithm according to claim 1 improves the method for capacitance plate antistatic property; It is characterized in that: the described interruption of step 1 is for when static is perhaps pointed the touch mode capacitive touch-screen; The capacitance of capacitive touch screen changes, and touch-screen control IC module detects the interruption that capacitance variation produces.
3. employing filtering algorithm according to claim 2 improves the method for capacitance plate antistatic property, it is characterized in that: the quantity of point in the corresponding capacitive touch screen control of described interruption times IC unit interval interscan touch-screen electric capacity changes.
4. employing filtering algorithm according to claim 3 improves the method for capacitance plate antistatic property, it is characterized in that: the detection of described interruption times for the whole screen of capacitive touch screen is carried out.
5. employing filtering algorithm according to claim 4 improves the method for capacitance plate antistatic property; It is characterized in that: the upper limit number of times X of said interruption pulse number of times is the threshold values number of times of master chip to interrupting handling; Surpass upper limit number of times X and then interrupt data is filtered out, otherwise handle interrupting.
6. employing filtering algorithm according to claim 1 improves the method for capacitance plate antistatic property, it is characterized in that, the circulation of the described capacitive touch screen control of step 2 IC module detects in real time and comprises:
A. detect whether static or finger touch mode capacitive touch-screen are arranged;
B. no change returns step a detection, changes and then detects the corresponding point of interruption;
C. the interrupt number of capacitive touch screen in the unit of account time, and statistics interruption times Y.
7. employing filtering algorithm according to claim 6 improves the method for capacitance plate antistatic property, it is characterized in that, step a judges that capacitive touch screen has no touch to comprise:
The rest capacitance value that capacitive touch screen is set is R;
The capacitance of senses touch capacitive touch screen is M;
The value that compares R and M;
Do not exceed corresponding difference, then capacitive touch screen shows as no touch, otherwise expression touches effectively.
8. employing filtering algorithm according to claim 1 improves the method for capacitance plate antistatic property; It is characterized in that: the described master chip of step 3 is treated to data operational processes is carried out in the action of static or the generation of finger contact touch-screen, gets into corresponding interrupt handling routine.
9. improve the method for capacitance plate antistatic property according to each described employing filtering algorithm among the claim 1-8, it is characterized in that: described electronic equipment is mobile phone, MP3, MP4, E-book reader or palm PC.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103731546A (en) * | 2013-09-26 | 2014-04-16 | 广东明创软件科技有限公司 | Electrostatic processing method based on mobile terminal and electrostatic processing mobile terminal |
| CN104023139A (en) * | 2014-06-19 | 2014-09-03 | 深圳市中兴移动通信有限公司 | Mobile terminal and abnormality processing method thereof |
| CN106257386A (en) * | 2015-06-22 | 2016-12-28 | 三星电子株式会社 | Utilize touch screen controller and the touch-screen system of sef-adapting filter |
| CN106325607A (en) * | 2016-10-09 | 2017-01-11 | 广东欧珀移动通信有限公司 | Method, device and terminal for reporting information |
| CN109444608A (en) * | 2018-12-18 | 2019-03-08 | 深圳贝特莱电子科技股份有限公司 | A kind of detection of touch screen static discharge and guard method |
| CN109739692A (en) * | 2018-12-21 | 2019-05-10 | Oppo广东移动通信有限公司 | Fault recovery method and Related product |
| CN113093932A (en) * | 2020-01-08 | 2021-07-09 | 北京小米移动软件有限公司 | Touch detection processing method and device, terminal equipment and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102314277A (en) * | 2011-09-30 | 2012-01-11 | 惠州Tcl移动通信有限公司 | Anti-static method of capacitive touch screen and corresponding capacitive touch screen |
| CN102591536A (en) * | 2011-01-14 | 2012-07-18 | 三星移动显示器株式会社 | Touch screen system |
| CN102622150A (en) * | 2012-02-22 | 2012-08-01 | 广东欧珀移动通信有限公司 | Static eliminating method for touch screen |
-
2012
- 2012-08-10 CN CN201210283967.6A patent/CN102830875B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102591536A (en) * | 2011-01-14 | 2012-07-18 | 三星移动显示器株式会社 | Touch screen system |
| CN102314277A (en) * | 2011-09-30 | 2012-01-11 | 惠州Tcl移动通信有限公司 | Anti-static method of capacitive touch screen and corresponding capacitive touch screen |
| CN102622150A (en) * | 2012-02-22 | 2012-08-01 | 广东欧珀移动通信有限公司 | Static eliminating method for touch screen |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103731546B (en) * | 2013-09-26 | 2015-08-26 | 广东明创软件科技有限公司 | Based on electrostatic processes and the mobile terminal thereof of mobile terminal |
| CN103731546A (en) * | 2013-09-26 | 2014-04-16 | 广东明创软件科技有限公司 | Electrostatic processing method based on mobile terminal and electrostatic processing mobile terminal |
| CN104023139B (en) * | 2014-06-19 | 2020-05-15 | 陈惠金 | Mobile terminal and exception handling method thereof |
| CN104023139A (en) * | 2014-06-19 | 2014-09-03 | 深圳市中兴移动通信有限公司 | Mobile terminal and abnormality processing method thereof |
| CN106257386A (en) * | 2015-06-22 | 2016-12-28 | 三星电子株式会社 | Utilize touch screen controller and the touch-screen system of sef-adapting filter |
| CN106257386B (en) * | 2015-06-22 | 2021-04-02 | 三星电子株式会社 | Touch screen controller and touch screen system using adaptive filter |
| CN106325607A (en) * | 2016-10-09 | 2017-01-11 | 广东欧珀移动通信有限公司 | Method, device and terminal for reporting information |
| CN106325607B (en) * | 2016-10-09 | 2019-02-12 | Oppo广东移动通信有限公司 | Report the method, apparatus and terminal of information |
| CN109444608A (en) * | 2018-12-18 | 2019-03-08 | 深圳贝特莱电子科技股份有限公司 | A kind of detection of touch screen static discharge and guard method |
| CN109444608B (en) * | 2018-12-18 | 2021-01-05 | 深圳贝特莱电子科技股份有限公司 | Electrostatic discharge detection and protection method for touch screen |
| CN109739692A (en) * | 2018-12-21 | 2019-05-10 | Oppo广东移动通信有限公司 | Fault recovery method and Related product |
| CN113093932A (en) * | 2020-01-08 | 2021-07-09 | 北京小米移动软件有限公司 | Touch detection processing method and device, terminal equipment and storage medium |
| CN113093932B (en) * | 2020-01-08 | 2024-04-09 | 北京小米移动软件有限公司 | Touch detection processing method and device, terminal equipment and storage medium |
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Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Address before: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. |
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