CN103645822B - The foreign matter detecting method of touch-screen and touch-screen - Google Patents
The foreign matter detecting method of touch-screen and touch-screen Download PDFInfo
- Publication number
- CN103645822B CN103645822B CN201310724547.1A CN201310724547A CN103645822B CN 103645822 B CN103645822 B CN 103645822B CN 201310724547 A CN201310724547 A CN 201310724547A CN 103645822 B CN103645822 B CN 103645822B
- Authority
- CN
- China
- Prior art keywords
- coordinate
- touch
- screen
- foreign matter
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Position Input By Displaying (AREA)
- User Interface Of Digital Computer (AREA)
Abstract
The foreign matter detecting method and the touch-screen that the invention discloses a kind of touch-screen, the foreign matter detecting method of this touch-screen comprises the following steps: detect the electric current of the electrode outflow of touch-screen, and be the coordinate figure on touch-screen by current conversion; Judge that coordinate figure is whether in the effective range of this touch-screen, and using the coordinate figure in the effective range of this touch-screen as effective coordinate figure; Detect the pressure at effective coordinate figure place of this touch-screen; Judge whether the pressure that previous step records is less than a default threshold value, and effective coordinate figure that pressure is less than to this threshold value is as foreign matter coordinate figure; Output alarm signal, this alarm signal is used for being illustrated in foreign matter coordinate figure place and has foreign matter. The foreign matter detecting method of touch-screen of the present invention and touch-screen can detect on touch-screen whether have foreign matter, can detect the position at foreign matter place in the time there is foreign matter, and inform that user clears up timely.
Description
Technical field
The present invention relates to a kind of foreign matter detecting method, relate in particular to a kind of touch-screen foreign matter detecting method andTouch-screen.
Background technology
People are in use when the electronic equipment with touch-screen, easy residual different with electrostatic charge on touch-screenThing, as grease etc., this foreign matter will affect touch-screen and receive the input of contact etc. after accumulation for a long timeSignal, lost efficacy the subregion of touch-screen, experienced thereby affect user. But some foreign matter naked eyesBe difficult to identification, therefore need it to detect and clear up.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the foreign matter having on touch-screen in prior art to be difficult toDistinguish and affect the defect that user experiences, a kind of foreign matter detecting method and touch-screen of touch-screen is provided.
The present invention solves above-mentioned technical problem by following technical proposals:
A foreign matter detecting method for touch-screen, its feature is, comprises the following steps:
S1, detect the electric current that the electrode of touch-screen flows out, and be the coordinate figure on touch-screen by current conversion;
S2, judge that coordinate figure is whether in the effective range of this touch-screen, and by this touch-screen effectivelyCoordinate figure in scope is as effective coordinate figure;
S3, detect the pressure at effective coordinate figure place of this touch-screen;
S4, judge S3Whether the pressure recording be less than a default threshold value, and pressure is less than to this threshold valueEffectively coordinate figure is as foreign matter coordinate figure;
S5, output alarm signal, this alarm signal is used for being illustrated in foreign matter coordinate figure place and has foreign matter.
According to the medium of the operation principle of touch-screen and transmission information, touch-screen is divided into four kinds, they divideWei resistance-type, condenser type, infrared-type and surface acoustic wave type, on mobile terminal, mostly useCapacitive touch screen. For capacitive touch screen, can flow out by the electrode on four angles of touch-screenElectric current calculate the coordinate figure of touch point on touch-screen.
In the time having foreign matter with electrostatic charge as grease on touch-screen, foreign matter generally can occupy certain positionRegion therefore has multiple coordinate figures in the time obtaining the coordinate figure of foreign matter, now needs screening to have at touch-screenCoordinate figure within the scope of effect is as effective coordinate figure. The foreign matter of discovering because user is more difficult produces touch-screenPressure conventionally much smaller than finger to touch-screen produce pressure, therefore can be by foreign matter at effective coordinateWhen being less than this threshold value, the pressure at value place determines that there is foreign matter at effective coordinate figure place. Wherein, by each effective coordinatePressure and this threshold value that value place obtains compare respectively, using qualified effective coordinate figure as foreign matterCoordinate figure. Send an alarm signal to user detecting when there is foreign matter at foreign matter coordinate figure place, inform userThere is foreign matter in the foreign matter coordinate figure place on touch-screen, need be as early as possible to its cleaning.
Preferably, this alarm signal is for to paint markd image at foreign matter coordinate figure place. For more directly perceivedGround manifests the residual condition of foreign matter on touch-screen, by representing on the image of touch screen surface in an imageCorresponding foreign matter coordinate figure place make the mark that has foreign matter, user only need be in those mark to this foreign matterWipe.
Preferably, step S4With step S5Between comprise:
S41, all foreign matter coordinate figures are divided into at least one coordinate figure group, wherein in same coordinate figure groupForeign matter coordinate figure in adjacent, the different coordinate figure group of foreign matter coordinate figure is non-conterminous;
Step S5For: output one second image, in this second image in position corresponding to each coordinate figure groupPlace is all painted with one second mark. Wherein, position corresponding to each coordinate figure group is adjacent foreign matter coordinate figureThe integral position linking together.
For the adjoining foreign matter coordinate figure of a class, can be classified as a coordinate figure group, to embody more intuitivelyThe distribution situation of foreign matter on touch-screen, if regard the position on touch-screen as latticed division, soBelong to adjacent foreign matter coordinate figure, adjacent foreign matter for the coordinate figure in touch-screen adjacent meshCoordinate figure can represent that those positions all exist foreign matter, more can user by an overall markKnow intuitively the distribution situation of different big or small foreign matters on touch-screen.
The present invention also provides a kind of touch-screen, and its feature is, comprises a coordinate figure acquisition module, oneOne judge module, one second judge module, a pressure detecting module and an alarm module,
The electric current that this coordinate figure acquisition module flows out for detection of the electrode of touch-screen by current conversion is alsoCoordinate figure on touch-screen;
This first judge module is used for using the coordinate figure in the effective range of this touch-screen as effective seatScale value;
This pressure detecting module is for detection of the pressure at effective coordinate figure place of this touch-screen;
Effective coordinate figure that this second judge module is used for pressure to be less than a default threshold value is as foreign matterCoordinate figure;
This alarm module is for output alarm signal, and this alarm signal is used for being illustrated in foreign matter coordinate figure place and depositsAt foreign matter.
Preferably, this alarm signal is for to paint markd image at foreign matter coordinate figure place.
Preferably, this touch-screen also comprises a grouping module, and this second judge module is for being less than pressureEffective coordinate figure of this threshold value is as foreign matter coordinate figure and enable this grouping module, and this grouping module is used for willAll adjacent foreign matter coordinate figures are divided at least one coordinate figure group, then enable this alarm module, whereinForeign matter coordinate figure in adjacent, the different coordinate figure group of foreign matter coordinate figure in same coordinate figure group is non-conterminous;
This alarm module is used for exporting one second image, corresponding in each coordinate figure group in this second imagePosition is all painted with one second mark.
Positive progressive effect of the present invention is: the foreign matter detecting method of this touch-screen and touch-screen can be examinedSurvey on touch-screen whether have foreign matter, in the time there is foreign matter, can detect the position at foreign matter place, and accuseKnow that user clears up timely, thereby avoided touch-screen because losing the subregion that the existence of foreign matter causesEffect and affect user experience.
Brief description of the drawings
Fig. 1 is the foreign matter detecting method flow chart of the touch-screen of the embodiment of the present invention 1.
Fig. 2 is the foreign matter detecting method flow chart of the touch-screen of the embodiment of the present invention 2.
Fig. 3 is the schematic diagram of the touch-screen of the embodiment of the present invention 2.
Detailed description of the invention
Mode below by embodiment further illustrates the present invention, but does not therefore limit the present invention toAmong described scope of embodiments.
Embodiment 1
The present embodiment provides a kind of foreign matter detecting method of touch-screen, as shown in Figure 1, comprises the following steps:
The electric current that the electrode of step 100, detection touch-screen flows out, and be on touch-screen by current conversionCoordinate figure, the quantity of this coordinate figure can because of the size of foreign matter, the distribution situation on touch-screen be different with foreign matterAnd it is different;
Step 101, judge that coordinate figure is whether in the effective range of this touch-screen, and will be at this touch-screenEffective range in coordinate figure as effective coordinate figure;
Step 102, detect the pressure at effective coordinate figure place of this touch-screen;
Whether the pressure that step 103, determining step 102 record is less than a default threshold value, and by pressureBe less than effective coordinate figure of this threshold value as foreign matter coordinate figure, wherein, judgement is for multiple effective coordinatesThe pressure at value place carries out;
Step 104, output alarm signal, this alarm signal is used for being illustrated in foreign matter coordinate figure place and exists differentThing. This alarm signal is for to paint markd image at foreign matter coordinate figure place.
The foreign matter detecting method of this touch-screen can detect on touch-screen whether have foreign matter, when there being foreign matterTime can detect the position at foreign matter place, and inform that user clears up timely.
Embodiment 2
The present embodiment provides a kind of foreign matter detecting method of touch-screen, as shown in Figure 2, and the present embodiment and realityThe difference of executing example 1 is, between step 103 and step 104, comprises:
Step 1031, all foreign matter coordinate figures are divided into at least one coordinate figure group, wherein same coordinate figureForeign matter coordinate figure in adjacent, the different coordinate figure group of foreign matter coordinate figure in group is non-conterminous;
Step 104 is: output one second image is in this second image, corresponding in each coordinate figure groupPosition is all painted with one second mark.
For instance, in the time that one remains to touch-screen surperficial with the contactant of electrostatic charge, touch-screenElectrode has corresponding outflow of bus current, for the contactant of difformity size, according to capacitive touch screenPrinciple, draw the multiple coordinate figures of this contactant on touch-screen by this Current calculation. Suppose there is A,B, C, D, E, six coordinate figures of F, and in those coordinate figures coordinate figure F not touch-screen effectivelyIn scope, therefore only detect the pressure at effective coordinate figure A, B, C, D, E place. Wherein, effectively sitThe pressure at scale value E place is greater than this threshold value, illustrates that the pressure that E place produces is more to derive from fingerTo touch-screen applied pressure, therefore determine that foreign matter coordinate figure A, B, C, D place exist foreign matter.
According to the grid of on touch-screen, coordinate figure being divided, wherein, foreign matter coordinate figure A, B, C areBelong in adjacent grid, therefore foreign matter coordinate figure A, B, C are classified as to the first coordinate figure group, willForeign matter coordinate figure D is classified as the second coordinate figure group. In the time of output the second image, the second image can image be shownShow the foreign matter distribution situation of touch screen surface, in the second image in the first coordinate figure group and the second coordinate figure groupCorresponding position shows respectively one second mark, to represent that those second mark exist a foreign matter. Wherein,The second mark that the first coordinate figure group corresponding position shows shows that foreign matter coordinate figure A, B, C are is oneThe foreign matter in piece region, particularly, can be by foreign matter coordinate figure A, B, C being linked together or in the lumpPainted demonstration carrys out this first coordinate figure group of mark, and the colored spots that the second coordinate figure group can be independent shows.In reaching embodiment 1 effect, make user more can know intuitively different big or small foreign matters at touch-screenOn distribution situation.
The present embodiment also provides a kind of touch-screen, and as shown in Figure 3, this touch-screen comprises that a coordinate figure obtainsModule 1, one first judge module 2, a pressure detecting module 3, one second judge module 4, a groupingModule 5 and an alarm module 6,
The electric current that coordinate figure acquisition module 1 flows out for detection of the electrode of touch-screen and by current conversion for touchingTouch the coordinate figure on screen;
The first judge module 2 is for using the coordinate figure in the effective range of this touch-screen as effective coordinateValue;
Pressure detecting module 3 is for detection of the pressure at effective coordinate figure place of this touch-screen;
The second judge module 4 is sat as foreign matter for the effective coordinate figure that pressure is less than to a default threshold valueScale value;
Grouping module 5 is for being divided at least one coordinate figure group by all adjacent foreign matter coordinate figures, thenEnable this alarm module.
Alarm module 6 is for exporting one second image, in this second image, in each coordinate figure group correspondencePosition be all painted with one second mark.
In sum, the foreign matter detecting method of this touch-screen can detect on touch-screen, whether there is foreign matter,In the time there is foreign matter, can detect the position at foreign matter place, and inform that user clears up timely, fromAnd lost efficacy and affect user's experience in the subregion of having avoided touch-screen to cause because of the existence of foreign matter.
Although more than described the specific embodiment of the present invention, those skilled in the art should manageSeparate, these only illustrate, and protection scope of the present invention is limited by appended claims. ThisThe technical staff in field is not deviating under the prerequisite of principle of the present invention and essence, can be to these enforcement sidesFormula is made various changes or modifications, but these changes and amendment all fall into protection scope of the present invention.
Claims (6)
1. a foreign matter detecting method for touch-screen, is characterized in that, comprises the following steps:
S1, detect the electric current that the electrode of touch-screen flows out, and be the coordinate figure on touch-screen by current conversion;
S2, judge that coordinate figure is whether in the effective range of this touch-screen, and by this touch-screen effectivelyCoordinate figure in scope is as effective coordinate figure;
S3, detect the pressure at effective coordinate figure place of this touch-screen;
S4, judge S3Whether the pressure recording be less than a default threshold value, and pressure is less than to this threshold valueEffectively coordinate figure is as foreign matter coordinate figure;
S5, output alarm signal, this alarm signal is used for being illustrated in foreign matter coordinate figure place and has foreign matter.
2. the foreign matter detecting method of touch-screen as claimed in claim 1, is characterized in that, this warningSignal is for to paint markd image at foreign matter coordinate figure place.
3. the foreign matter detecting method of touch-screen as claimed in claim 1, is characterized in that, step S4With step S5Between comprise:
S41, all foreign matter coordinate figures are divided into at least one coordinate figure group, wherein in same coordinate figure groupForeign matter coordinate figure in adjacent, the different coordinate figure group of foreign matter coordinate figure is non-conterminous;
Step S5For: output one second image, in this second image in position corresponding to each coordinate figure groupPlace is all painted with one second mark.
4. a touch-screen, is characterized in that, comprises that a coordinate figure acquisition module, one first judges mouldPiece, one second judge module, a pressure detecting module and an alarm module,
The electric current that this coordinate figure acquisition module flows out for detection of the electrode of touch-screen by current conversion is alsoCoordinate figure on touch-screen;
This first judge module is used for using the coordinate figure in the effective range of this touch-screen as effective seatScale value;
This pressure detecting module is for detection of the pressure at effective coordinate figure place of this touch-screen;
Effective coordinate figure that this second judge module is used for pressure to be less than a default threshold value is as foreign matterCoordinate figure;
This alarm module is for output alarm signal, and this alarm signal is used for being illustrated in foreign matter coordinate figure place and depositsAt foreign matter.
5. touch-screen as claimed in claim 4, is characterized in that, this alarm signal is to sit at foreign matterMarkd image is painted at scale value place.
6. touch-screen as claimed in claim 4, is characterized in that, this touch-screen also comprises a groupingModule, effective coordinate figure that this second judge module is used for pressure to be less than this threshold value is as foreign matter coordinate figureAnd enable this grouping module, this grouping module is for being divided at least one by all adjacent foreign matter coordinate figuresCoordinate figure group, then enables this alarm module, wherein the foreign matter coordinate figure in same coordinate figure group adjacent,Foreign matter coordinate figure in different coordinate figure groups is non-conterminous;
This alarm module is used for exporting one second image, corresponding in each coordinate figure group in this second imagePosition is all painted with one second mark.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310724547.1A CN103645822B (en) | 2013-12-24 | 2013-12-24 | The foreign matter detecting method of touch-screen and touch-screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310724547.1A CN103645822B (en) | 2013-12-24 | 2013-12-24 | The foreign matter detecting method of touch-screen and touch-screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103645822A CN103645822A (en) | 2014-03-19 |
| CN103645822B true CN103645822B (en) | 2016-05-04 |
Family
ID=50251049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310724547.1A Active CN103645822B (en) | 2013-12-24 | 2013-12-24 | The foreign matter detecting method of touch-screen and touch-screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103645822B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596580A (en) * | 2016-06-14 | 2017-04-26 | 艾悌亚信息技术（上海）有限公司 | AOI (automatic optical inspection) algorithm/technique capable of increasing AOI yield of glass screen of touch screen |
| CN107328555A (en) * | 2017-06-20 | 2017-11-07 | 合肥市惠科精密模具有限公司 | A kind of display screen foreign matter detecting method |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104199572B (en) * | 2014-08-18 | 2017-02-15 | 京东方科技集团股份有限公司 | Touch positioning method of touch display device and touch display device |
| CN107844754B (en) * | 2015-10-19 | 2021-03-12 | Oppo广东移动通信有限公司 | Method and device for judging foreign matters on surface of terminal fingerprint sensor |
| CN105739766B (en) * | 2016-01-28 | 2018-11-20 | 广东欧珀移动通信有限公司 | A kind of touch control display apparatus and foreign matter detecting method, electric terminal based on it |
| CN106095164B (en) * | 2016-05-31 | 2019-03-08 | 努比亚技术有限公司 | A kind of method and terminal incuding screen spot |
| CN107608545A (en) * | 2016-07-12 | 2018-01-19 | 中兴通讯股份有限公司 | Processing method and processing device, the terminal of touch event |
| CN106331238A (en) * | 2016-09-20 | 2017-01-11 | 努比亚技术有限公司 | Screen stain prompt method, screen stain prompt device and mobile terminal |
| CN106502451B (en) * | 2016-09-27 | 2019-07-26 | 北京集创北方科技股份有限公司 | Touch detecting method and device |
| CN108984261B (en) * | 2018-07-12 | 2019-12-03 | 广东小天才科技有限公司 | A kind of screen cleaning based reminding method and wearable device |
| CN109884727B (en) * | 2019-03-15 | 2022-03-04 | Oppo广东移动通信有限公司 | Foreign matter detection method, foreign matter detection device, and electronic apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200950090Y (en) * | 2006-07-07 | 2007-09-19 | 汉王科技股份有限公司 | Device for performing vector pressure measurement using capacitance variation |
| CN101561736A (en) * | 2008-04-15 | 2009-10-21 | 禾瑞亚科技股份有限公司 | Projective capacitive touch-control device for preventing conducting material from influencing contactor detection and method thereof |
| CN103324373A (en) * | 2013-06-14 | 2013-09-25 | 广东欧珀移动通信有限公司 | Method for preventing conductive liquid from causing misoperation of touch screen |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4377343B2 (en) * | 2005-01-31 | 2009-12-02 | 株式会社東海理化電機製作所 | Touch operation input device |
| JP5157969B2 (en) * | 2009-03-09 | 2013-03-06 | ソニー株式会社 | Information processing apparatus, threshold setting method and program thereof |
-
2013
- 2013-12-24 CN CN201310724547.1A patent/CN103645822B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200950090Y (en) * | 2006-07-07 | 2007-09-19 | 汉王科技股份有限公司 | Device for performing vector pressure measurement using capacitance variation |
| CN101561736A (en) * | 2008-04-15 | 2009-10-21 | 禾瑞亚科技股份有限公司 | Projective capacitive touch-control device for preventing conducting material from influencing contactor detection and method thereof |
| CN103324373A (en) * | 2013-06-14 | 2013-09-25 | 广东欧珀移动通信有限公司 | Method for preventing conductive liquid from causing misoperation of touch screen |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596580A (en) * | 2016-06-14 | 2017-04-26 | 艾悌亚信息技术（上海）有限公司 | AOI (automatic optical inspection) algorithm/technique capable of increasing AOI yield of glass screen of touch screen |
| CN107328555A (en) * | 2017-06-20 | 2017-11-07 | 合肥市惠科精密模具有限公司 | A kind of display screen foreign matter detecting method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103645822A (en) | 2014-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103645822B (en) | The foreign matter detecting method of touch-screen and touch-screen | |
| CN102622150B (en) | Static eliminating method for touch screen | |
| CN107168596B (en) | Scanning method of capacitive touch screen and capacitive touch screen | |
| CN107223232A (en) | Electronic equipment and detection method | |
| US8624861B2 (en) | Method for determining touch point | |
| CN1653411A (en) | Method for improving positioned accuracy for a determined touch input | |
| CN108089813B (en) | Touch screen scribing operation processing method and device, electronic equipment and storage medium | |
| CN105302383A (en) | Anti-interference method and device for capacitive touch sensor | |
| CN103776511A (en) | Level information monitoring method, device and system | |
| CN102945109B (en) | Mutual capacitance screen detects the method for touch area | |
| CN103198005A (en) | Application program display method and device and electronic device | |
| CN104641325A (en) | Improvements in touch sensitive displays | |
| CN109144318A (en) | Judge the method and apparatus whether palm line segment group needs to divide | |
| CN109656406A (en) | A kind of anti-interference method, device and the computer readable storage medium of display screen touch key-press | |
| CN107301006B (en) | Capacitive screen waterproof processing prejudging method | |
| CN103577695A (en) | Method and device for detecting suspect data in power quality data | |
| CN106104433A (en) | Touch detection in capacitive sensor system | |
| CN105488571A (en) | Maintenance reminding method | |
| CN102520824B (en) | Control device of touch panel, single-point multi-finger action judgment method and touch pen thereof | |
| CN103543933A (en) | Method for selecting files and touch terminal | |
| CN105549975A (en) | Processing method and device for prompt advertisement window | |
| CN105677121B (en) | Touch-control decision maker and method and display device | |
| CN107144316A (en) | The computational methods that a kind of automobile instrument oil mass is shown | |
| CN103250118B (en) | For the method determining the contact position on capacitive induction zone | |
| CN105717409B (en) | The electrical leakage detecting method and system of electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201203 Shanghai city Pudong New Area Zhangjiang Keyuan Road No. 399 Building No. 1 Patentee after: HUAQIN TELECOM TECHNOLOGY Co.,Ltd. Address before: 201203 Shanghai city Pudong New Area Zhangjiang Keyuan Road No. 399 Building No. 1 Patentee before: SHANGHAI HUAQIN TELECOM TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Building 1, No. 399 Keyuan Road, Zhangjiang hi tech park, Pudong New Area, Shanghai, 201203 Patentee after: Huaqin Technology Co.,Ltd. Address before: Building 1, No. 399 Keyuan Road, Zhangjiang hi tech park, Pudong New Area, Shanghai, 201203 Patentee before: Huaqin Technology Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP03 | Change of name, title or address |
Address after: Building 1, No. 399 Keyuan Road, Zhangjiang hi tech park, Pudong New Area, Shanghai, 201203 Patentee after: Huaqin Technology Co.,Ltd. Address before: 201203 Building 1, 399 Zhangyuan Road, Zhangjiang, Pudong New Area, Shanghai Patentee before: HUAQIN TELECOM TECHNOLOGY Co.,Ltd. |
|
| CP03 | Change of name, title or address |