CN104133600A - Liquid identification method of touch panel - Google Patents
Liquid identification method of touch panel Download PDFInfo
- Publication number
- CN104133600A CN104133600A CN201310205765.4A CN201310205765A CN104133600A CN 104133600 A CN104133600 A CN 104133600A CN 201310205765 A CN201310205765 A CN 201310205765A CN 104133600 A CN104133600 A CN 104133600A
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- induction
- liquid
- contact panel
- point
- picture frame
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- 239000007788 liquid Substances 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000006698 induction Effects 0.000 claims abstract description 154
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000005755 formation reaction Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000010354 integration Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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- Position Input By Displaying (AREA)
Abstract
The invention relates to a liquid identification method of a touch panel, which comprises the steps of firstly judging that no touch object exists on the touch panel, then scanning the touch panel in a mutual capacitance scanning mode to obtain a full-point type induction frame, regarding an induction point of which the induction value of the induction point exceeds a liquid induction value as an effective induction point in each full-point type induction frame to calculate the number of the effective induction points, and identifying the existence of the liquid object if the number of the effective induction points exceeds a preset critical value; thus, the liquid mark can be marked to eliminate the interference operation of the liquid on the touch panel.
Description
Technical field
The present invention relates to a kind of object identification method of contact panel, relate in particular to a kind of Liquid identification method of contact panel.
Background technology
Because capacitance type touch-control panel is to judge having or not of touching object with the variation of electric capacity, be therefore subject to environment for use noise and disturb its electric capacity, and noise is mistaken for to touching object.
For noise interference capacitors amount one thing, the controller of contact panel has been set the mark (Flag) of different noise types, while carrying out report point program for this controller, can get rid of noise disturbs, disturb with the noise that liquid was caused, the controller of contact panel is set with liquid mark at present, once having judged liquid from touching signals is present in contact panel, give mark by this liquid mark, in the time that this controller is carried out follow-up report point program, can judge that liquid mark is labeled, disturb and get rid of liquid, originally be for example to refer to report point program more, be restricted to single-point report point program, reduce because noise disturbs and judge the phenomenon of many objects by accident.
Summary of the invention
Fundamental purpose of the present invention is the Liquid identification method that proposes a contact panel, effectively to promote the speed and the correctness that judge that on contact panel, liquid exists.
Wanting to reach technical way that above-mentioned purpose uses includes for the Liquid identification method that makes this contact panel:
Judge touchless object on contact panel;
Read at least one full point type induction picture frame, scan this contact panel to hold mutually scan mode, obtain this full point type induction picture frame;
Calculate actual induction point quantity, in each full point type induction picture frame, this induction point that the influence value of induction point is exceeded to a liquid influence value is considered as actual induction point, and calculates actual induction point quantity; And
Identification liquid object, is to judge when this actual induction point quantity exceedes a preset critical, and identification exists liquid object.
Preferably, after identification liquid object exists, mark one liquid mark.
Preferably, above-mentioned identification liquid object step is further set a default number, and further read the full point type induction picture frame of this default number, and judge that the actual induction point quantity of all full point types induction picture frames all exceedes after preset critical, just identifies the existence of liquids body.
Preferably, touchless object step on above-mentioned judgement contact panel, includes:
Scan this contact panel with self-tolerant, to obtain the induction amount of each the line of induction of this contact panel;
Whether the induction amount that judges each line of induction exceedes a default touching induction amount of certainly holding; If nothing, does not have touching object on Trackpad at present.
Preferably, touchless object step on above-mentioned judgement contact panel, includes:
Scan this contact panel with appearance formula mutually, to obtain an induction picture frame;
Judge on this induction picture frame whether comprise multiple induction points, its induction amount exceedes a default touching induction amount of holding mutually;
If have, judge whether the induction group shape that the plurality of induction point forms meets touching object induction group shape, identify if do not conform to and on this Trackpad, do not touch object.
Preferably, the arrayed feature that the plurality of induction point of above-mentioned judgement forms is not in the arrayed feature step of touching object, finding out the middle induction point of the arrangement scope of multiple induction points formations, if middle induction point is less than the influence value of multiple induction points, is not the arrayed feature of touching object.
The invention described above mainly produces capacitance change full point type induction picture frame with easy liquid body interference carries out the identification that liquid has or not, and after definite touchless object, start to read this full point type induction picture frame, an and default liquid influence value, if having, the influence value of the induction point of full point type induction picture frame exceedes this liquid influence value, and the induction point quantity that influence value exceedes liquid influence value exceeds preset critical, confirming has liquid object to exist; So, this liquid mark can be given to mark, get rid of the interference of liquid on contact panel for down-stream.
Brief description of the drawings
Fig. 1 is the control calcspar of contact panel of the present invention.
Fig. 2 is the main process flow diagram of Liquid identification method of the present invention.
Fig. 3 is the process flow diagram of the first preferred embodiment of Liquid identification method of the present invention.
Fig. 4 is an integration self-tolerant and the induction spirogram table after appearance formula scanning contact panel mutually.
Fig. 5 is the process flow diagram of the second preferred embodiment of Liquid identification method of the present invention.
Fig. 6 is an integration self-tolerant and the induction spirogram table after appearance formula scanning contact panel mutually.
Fig. 7 is the process flow diagram of the 3rd preferred embodiment of Liquid identification method of the present invention.
Symbol description:
10 contact panel 101,102 lines of induction
11 controllers
20 30 groups of group.
Embodiment
Identify for promoting on a contact panel correctness that liquid exists, refer to Fig. 1 and Fig. 2, the present invention includes following key step:
Judge touchless object (S10) on contact panel 10;
Read at least one full point type induction picture frame (S11), scan this contact panel 10 to hold mutually scan mode, obtain this full point type induction picture frame;
Calculate actual induction point quantity (S12), in each full point type induction picture frame, this induction point that the influence value of induction point is exceeded to a liquid influence value is considered as actual induction point, and calculates actual induction point quantity; And
Identification liquid object (S13), judges when this actual induction point quantity exceedes a preset critical, identifies this liquid object and has (S14).
When having liquid object, identification exists, the controller 11 of this contact panel 10 can give mark by the liquid mark of touching signal, make operating system 12 receive after this touching signal, know on current contact panel 10 have liquid to exist by the liquid mark of mark, to get rid of in follow-up execution the interference operation that on contact panel 10, liquid exists, for example, do not process or ignore the coordinate of this touching signals.
Please refer to shown in Fig. 3, the present invention realizes the process flow diagram of the first preferred embodiment of above key step again, and the actual practice of wherein realizing touchless object step on above-mentioned judgement contact panel includes:
Scan this contact panel with self-tolerant, to obtain the induction amount (S101) of each the line of induction of this contact panel;
Whether the induction amount that judges each line of induction exceedes a default touching induction amount of certainly holding; If nothing, does not have touching object (S102) on Trackpad at present.
Shown in Fig. 1 and 4, for self-tolerant and hold mutually formula and scan respectively the contact panel 10 that includes liquid, by each row after self-tolerant scanning, it is known that row induction quantity was for 0 (as GTG indicates), each the line of induction 101 of self-tolerant scanning, the not interference of liquid body is measured in 102 induction, wherein a kind of self-tolerant scan method is to export the row line of induction to driven in phase signal simultaneously, simultaneously to each row, the row line of induction 101, 102 output drive signals, then sequentially receive each line of induction 101, 102 induction amount, until all lines of induction 101, 102 all obtain induction amount, it is exportable one group of induction information.On contact panel as present in liquid discharges such as water droplets, and water droplet position correspondence is several adjacent lines of induction wherein, although the voltage of each the line of induction can have because of water droplet rising or the variation that declines, but the pumping signal to all line of induction output same phases simultaneously, can make the current potential between the adjacent line of induction identical or close, make the induction amount of each the line of induction that sequentially receives corresponding water droplet position, in this induction amount, can not include the variation of water droplet induction amount; Therefore, the induction information of single-ended input homophase scan mode output can effectively be got rid of the interference of the liquid such as water droplet; Otherwise, by the scanning of appearance formula mutually full point type induction picture frame (if do not indicated with GTG), there is non-zero just induction amount in the induction point of corresponding liquid position; Therefore the present embodiment scans this contact panel 10 with self-tolerant, can judge on this contact panel 10 whether have touch object, if determine just execution graph 1 all the other steps (S11～S14) of touchless object.
In addition, then referring to shown in Fig. 5, is the process flow diagram of the present invention's the second preferred embodiment, is to disclose another actual practice of realizing touchless object step on above-mentioned judgement contact panel 10, and it includes:
Scan this contact panel 10 with appearance formula mutually, to obtain an induction picture frame (S103);
Whether judge on this induction picture frame has induction amount to exceed a default induction point (S104) that holds mutually touching induction amount; If nothing, identifies and does not have touching object on this Trackpad;
If have, judge whether the induction group shape that the plurality of induction point forms meets touching object induction group's shape (S105), if do not conform to, identify and on this Trackpad, do not touch object.
Above-described embodiment is to scan this contact panel 10 and have the judgement of touchless object with appearance formula mutually, because a touching object can corresponding one has the induction group of multiple induction points, is identified whether there is touch object therefore can respond to group shape by judgement, as shown in Figure 6, include with the scanning of full point type the full point type induction picture frame that the liquid object of diverse location and the contact panel 10 of touching object are obtained, although also there is having the induction group 20 of multiple induction points in liquid object, but in the induction group 30 of the induction amount distribution scenario of its induction point and touching object, the induction amount distribution scenario of induction point is not identical, maximum difference is that the middle induction amount of induction group 20 of liquid object is low compared with the induction amount of its periphery induction point, be even 0 or negative value, the induction group 30 of touching object is that middle induction amount is height compared with its periphery, even the highest, therefore mode can first identify on this contact panel whether have the touching of existence object equally by this, once confirm touchless object, start all the other steps (S11～S14) of execution graph 1.
Moreover, for getting rid of the present invention, other noise (as charging noise or LCM noise etc.) is mistaken for to liquid object, can further set a default number, and the full point type that reads this default number is responded to picture frame, when the actual induction point quantity that judges all full point type induction picture frames all exceedes after preset critical, just identify liquids body and exist.As shown in Figure 7, it includes the actual process flow diagram of realizing:
(a) judge touchless object on contact panel 10 (S10 ');
(b) read a full point type induction picture frame (S11), scan this contact panel to hold mutually scan mode, obtain this full point type induction picture frame;
(c) calculate actual induction point quantity (S12), in each full point type induction picture frame, this induction point that the influence value of induction point is exceeded to a liquid influence value is considered as actual induction point, and calculates actual induction point quantity;
(d) judge that whether this actual induction point quantity exceedes a preset critical (S13), returns to step (a) if not; If so, further judge whether to arrive default number (S131), if not yet reach default number, return to step (a); If arrived this default number, carried out next step; And
(e) identify this liquid object and have (S14).
From above-mentioned steps (a) to (e), when the continuous actual induction point quantity of each full point type induction picture frame of the full point type induction picture frame of default number, while all exceeding a predetermined inductive critical value, be identified as liquid object and exist, and get rid of whereby the shorter noise of time of occurrence (as charging noise); Certainly above-mentioned steps (a) judges that the judgment mode of touchless object can adopt the practice of the first or second preferred embodiment equally.
In sum, the present invention mainly produces capacitance change full point type induction picture frame with easy liquid body interference carries out the identification that liquid has or not, and after definite touchless object, start to read this full point type induction picture frame, an and default liquid influence value, if having, the influence value of the induction point of full point type induction picture frame exceedes this liquid influence value, and the induction point quantity that influence value exceedes liquid influence value exceeds preset critical, confirming has liquid object to exist; So, this liquid mark can be given to mark, get rid of in order to follow-up execution the interference operation that on contact panel, liquid exists.
Claims (6)
1. a Liquid identification method for contact panel, comprising:
Judge touchless object on contact panel;
Read at least one full point type induction picture frame, scan this contact panel to hold mutually scan mode, obtain this full point type induction picture frame;
Calculate actual induction point quantity, in each full point type induction picture frame, this induction point that the influence value of induction point is exceeded to a liquid influence value is considered as actual induction point, and calculates actual induction point quantity; And
Identification liquid object, judges when this actual induction point quantity exceedes a preset critical, identification exists liquid object.
2. the Liquid identification method of contact panel according to claim 1, is characterized in that, after identification liquid object exists, and mark one liquid mark.
3. the Liquid identification method of contact panel according to claim 2, it is characterized in that, above-mentioned identification liquid object step is further set a default number, and the full point type that further reads this default number is responded to picture frame, and judge that the actual induction point quantity that all full point types are responded to picture frames all exceedes after preset critical, just identifies liquids body and exists.
4. according to the Liquid identification method of the contact panel described in claim 1,2 or 3, it is characterized in that, touchless object step on above-mentioned judgement contact panel, includes:
Scan this contact panel with self-tolerant, to obtain the induction amount of each the line of induction of this contact panel;
Whether the induction amount that judges each line of induction exceedes a default touching induction amount of certainly holding; If nothing, does not have touching object on Trackpad at present.
5. according to the Liquid identification method of the contact panel described in claim 1,2 or 3, it is characterized in that, touchless object step on above-mentioned judgement contact panel, includes:
Scan this contact panel with appearance formula mutually, to obtain an induction picture frame;
Judge on this induction picture frame whether comprise multiple induction points, its induction amount exceedes a default touching induction amount of holding mutually;
If have, judge whether the induction group shape that the plurality of induction point forms meets touching object induction group shape, identify if do not conform to and on this Trackpad, do not touch object.
6. the Liquid identification method of contact panel according to claim 5, it is characterized in that, the arrayed feature that the plurality of induction point of above-mentioned judgement forms is not in the arrayed feature step of touching object, find out the middle induction point of the arrangement scope of multiple induction points formations, if middle induction point is less than the influence value of multiple induction points, it not the arrayed feature of touching object.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW102115681 | 2013-05-02 | ||
| TW102115681A TWI502458B (en) | 2013-05-02 | 2013-05-02 | Method of identifying a liquid object on a touch panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104133600A true CN104133600A (en) | 2014-11-05 |
| CN104133600B CN104133600B (en) | 2017-06-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310205765.4A Active CN104133600B (en) | 2013-05-02 | 2013-05-29 | Liquid identification method of touch panel |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104133600B (en) |
| TW (1) | TWI502458B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105988620A (en) * | 2015-02-13 | 2016-10-05 | 冠捷投资有限公司 | Touch display device and method for detecting and removing moisture condensation |
| TWI585664B (en) * | 2016-04-01 | 2017-06-01 | Imagination Broadway | Touch panel identification method |
| WO2019014822A1 (en) * | 2017-07-18 | 2019-01-24 | 深圳市汇顶科技股份有限公司 | Method, device and touch-control detection device for finger positioning on touchscreen in wet state |
| CN109343751A (en) * | 2018-08-23 | 2019-02-15 | 维沃移动通信有限公司 | A kind of mobile terminal and driving method |
| CN109426380A (en) * | 2017-08-28 | 2019-03-05 | 奇景光电股份有限公司 | Touch device and its method for sensing and touch control sensing circuit |
| CN110596761A (en) * | 2018-06-12 | 2019-12-20 | 义隆电子股份有限公司 | Liquid detection method and controller of capacitive touch panel |
| WO2020140797A1 (en) * | 2019-01-02 | 2020-07-09 | 京东方科技集团股份有限公司 | Water removal device, water removal system and water removal method |
| CN113220168A (en) * | 2020-01-21 | 2021-08-06 | 纮康科技股份有限公司 | Multi-mode operation method of capacitive touch panel |
| CN114327161A (en) * | 2021-12-28 | 2022-04-12 | 北京集创北方科技股份有限公司 | Touch device and touch positioning method |
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| TWI653562B (en) * | 2015-11-06 | 2019-03-11 | 禾瑞亞科技股份有限公司 | Single-finger touch processing system, device and method |
| TWI567624B (en) * | 2015-12-16 | 2017-01-21 | 鹽光股份有限公司 | Capacitive Sensor Device And Detecting Method For A Conductive?Matter Therein |
| TWI692711B (en) * | 2018-06-05 | 2020-05-01 | 義隆電子股份有限公司 | Method of detecting liquid on capacitive touch panel and controller thereof |
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| TWI533166B (en) * | 2011-09-22 | 2016-05-11 | 義隆電子股份有限公司 | Method of identifying touch object |
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| CN101930327A (en) * | 2009-06-22 | 2010-12-29 | 联咏科技股份有限公司 | Coordinate algorithm and position sensing system of touch panel |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105988620A (en) * | 2015-02-13 | 2016-10-05 | 冠捷投资有限公司 | Touch display device and method for detecting and removing moisture condensation |
| TWI585664B (en) * | 2016-04-01 | 2017-06-01 | Imagination Broadway | Touch panel identification method |
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| CN107450782B (en) * | 2016-04-01 | 2022-03-22 | 意象无限股份有限公司 | Identification method of touch panel |
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| CN109426380B (en) * | 2017-08-28 | 2021-12-21 | 奇景光电股份有限公司 | Touch device, sensing method thereof and touch sensing circuit |
| CN110596761A (en) * | 2018-06-12 | 2019-12-20 | 义隆电子股份有限公司 | Liquid detection method and controller of capacitive touch panel |
| CN109343751B (en) * | 2018-08-23 | 2022-03-04 | 维沃移动通信有限公司 | Mobile terminal and driving method |
| CN109343751A (en) * | 2018-08-23 | 2019-02-15 | 维沃移动通信有限公司 | A kind of mobile terminal and driving method |
| WO2020140797A1 (en) * | 2019-01-02 | 2020-07-09 | 京东方科技集团股份有限公司 | Water removal device, water removal system and water removal method |
| CN113220168A (en) * | 2020-01-21 | 2021-08-06 | 纮康科技股份有限公司 | Multi-mode operation method of capacitive touch panel |
| CN114327161A (en) * | 2021-12-28 | 2022-04-12 | 北京集创北方科技股份有限公司 | Touch device and touch positioning method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104133600B (en) | 2017-06-30 |
| TW201443748A (en) | 2014-11-16 |
| TWI502458B (en) | 2015-10-01 |
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