CN103324373B - A kind of method preventing conducting liquid from causing touch-screen misoperation - Google Patents
A kind of method preventing conducting liquid from causing touch-screen misoperation Download PDFInfo
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- CN103324373B CN103324373B CN201310237233.9A CN201310237233A CN103324373B CN 103324373 B CN103324373 B CN 103324373B CN 201310237233 A CN201310237233 A CN 201310237233A CN 103324373 B CN103324373 B CN 103324373B
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Abstract
The invention discloses a kind of method preventing conducting liquid from causing touch-screen misoperation, comprise the following steps: (1) obtains the changing value Δ C of touch-screen electric capacity; (2) judge whether the changing value Δ C of current touch screen electric capacity is in the variation range of the touch-screen electric capacity that conducting liquid causes; If so, then represent that touch-screen has conducting liquid, enter step (3); If not, then represent that touch-screen does not have conducting liquid; (3) detect on touch-screen and whether recognize touch event; If so, step (4) is entered; If not, then step (5) is entered; (4) improve current touch screen reference value, perform step (3); (5) start timer, after timet, touch-screen reference value is reduced to initial value; Judge whether touch-screen has touch event; If so, then represent that touch-screen has touch event, get back to step (4); If not, represent that touch-screen does not have touch event.The present invention has the simple and advantage that accuracy is high of step.
Description
Technical field
The present invention relates to a kind of touching technique of touch-screen, particularly a kind of method preventing conducting liquid from causing touch-screen misoperation.
Background technology
Touch-screen is a kind of positioning equipment, and by thermoinduction transmission of information, user can directly use hand to computer input coordinate information, it with mouse, keyboard is the same, be a kind of input equipment, but compare keyboard and mouse, touch-screen is better convenience for user provides.
In routine use, sometimes can encounter the situation that touch screen surface has water, such as water has been spread across touch screen surface or has shielded with the finger point touching got wet.Because liquid is also capacitive character material, the change of touch screen surface electric capacity can be caused equally, just be similar to a finger and put face on the touchscreen always, touch-screen now will be caused to touch insensitive phenomenon.Be illustrated in figure 1 under testing touch screen interface, touch screen surface has the test pattern of water droplet, and water droplet is similar to a finger always in touch screen surface, if now real finger point touching screen again, and will without any touching effect.Water droplet test is also weigh the jamproof important indicator of touch-screen, determines the excellent degree of touch screen performance to a certain extent.Different media causes the change of touch-screen electric capacity to be different, and the capacitance variations that liquid causes is less than caused by finger.If touch by regulating touch-screen the interference free performance that reference value improves touch-screen, the sensitivity of touch-screen will certainly be reduced.
Be disclose a kind of method preventing the false triggering of capacitance touch screen water droplet in the Chinese invention patent application of CN103049159A at publication number, the method comprises the condition of initialization water droplet false triggering, kernel-driven layer detects contact and whether is more than or equal to 2, whether the trigger point number of times detected in Preset Time is greater than pre-set threshold value, detect trigger point coordinate transition amplitude and whether be greater than default threshold values, the condition etc. starting filter action is set.The method detecting step is complicated, needs just can be determined whether as water droplet false triggering by trigger point number, triggering times and trigger point coordinate.The testing process of the method is comparatively complicated, and if finger large area long by touch screen time, be easily mistaken for water droplet and trigger.
Summary of the invention
The shortcoming that the object of the invention is to overcome prior art with not enough, provide a kind of step simple, easily to realize and the high conducting liquid that prevents of accuracy causes the method for touch-screen misoperation.
Object of the present invention is achieved through the following technical solutions: a kind of method preventing conducting liquid from causing touch-screen misoperation, comprises the following steps:
(1) the changing value Δ C of current touch screen electric capacity is obtained;
(2) judge whether the changing value Δ C of current touch screen electric capacity is in the variation range of the touch-screen electric capacity that conducting liquid causes;
If so, then represent that touch-screen has conducting liquid, judgement touch-screen has the region of conducting liquid, then enter step (3);
If not, then represent that touch-screen does not have conducting liquid;
(3) detecting on touch-screen has the region of conducting liquid whether to recognize touch event;
If so, step (4) is then entered;
If not, then step (5) is entered;
(4) improve the reference value of current touch screen, perform step (3);
(5) start a timer, after timet, the reference value of touch-screen is reduced to initial value; Then judge whether touch-screen has touch event;
If so, then represent that touch-screen has touch event, perform step (4);
If not, then represent that touch-screen does not have touch event, namely touch-screen does not have liquid.
Preferably, in described step (2), the variation range of the touch-screen electric capacity that liquid causes is 40 ~ 60.
Preferably, in described step (5), time T is 100ms.
Preferably, in described step (5), the initial value of touch-screen reference value is 16.
Preferably, in described step (4), touch-screen reference value improves 10 at every turn.
The present invention has following advantage and effect relative to prior art:
(1) the inventive method causes touch-screen electric capacitance change to be worth different character according to different medium to differentiate whether touch-screen has liquid, then by improving the reference value of touch-screen, reduce sensitivity of touch screen, the touch event causing touch-screen to can't detect conducting liquid producing, thus filter out the interference of liquid.Therefore the step of the inventive method is very simple.Because liquid is relative to finger, its touch sensitivity to touch-screen requires higher, in some touch-screen reference value, touch-screen can produce touch event for the touch of finger, and touch event can not be produced for conducting liquid, therefore can be very easy to realize preventing conducting liquid from causing the object of touch-screen misoperation by improving touch-screen reference value.
(2) the inventive method starts a timer, after a period of time that touch-screen can't detect touch event, the reference value of touch-screen is rolled back initial value, whether disappear with the conducting liquid detected on touch-screen, make touch-screen after conducting liquid disappears, initial maximum sensitivity can be returned to.To improve the accuracy of finger touch.
Accompanying drawing explanation
Fig. 1 is the test pattern that touch screen surface has water droplet.
Fig. 2 is the process flow diagram of the inventive method.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 2, present embodiment discloses a kind of method preventing conducting liquid from causing touch-screen misoperation, comprise the following steps:
(1) the changing value Δ C of current touch screen electric capacity is obtained;
(2) judge whether the changing value Δ C of current touch screen electric capacity is in the variation range of the touch-screen electric capacity that liquid causes; Wherein liquid causes the variation range of touch-screen electric capacity to be 40 ~ 60;
If so, then represent that touch-screen has conducting liquid, judgement touch-screen has the region of conducting liquid, then enter step (3);
If not, then represent that touch-screen does not have conducting liquid;
(3) detecting on touch-screen has the region of conducting liquid whether to recognize touch event;
If so, step (4) is then entered;
If not, then step (5) is entered;
(4) improve the reference value of current touch screen, perform step (3); The value that wherein touch-screen reference value improves at every turn is 10;
(5) start a timer, after 100ms, the reference value of touch-screen is reduced to initial value; Then judge whether touch-screen has touch event; Wherein touch-screen register range changes at 0-255, and 16 systems are 0-0xff, and different touch-screen register values arranges all different, and the register initial value of the present embodiment touch-screen is set to 0x10, and namely the initial value of touch-screen reference value is 16;
If so, then represent that touch-screen has touch event, then perform step (4);
If not, then represent that touch-screen does not have touch event, namely touch-screen does not have liquid.
Because different touching medium causes the change of touch-screen electric capacity different, therefore adjudicate on touch-screen whether have conducting liquid by touch-screen electric capacitance change in the present embodiment step (2).
Liquid is relative to finger, its touch sensitivity to touch-screen requires higher, the present embodiment constantly improves the reference value of touch-screen by step (4), after touch-screen reference value reaches certain value, touch-screen can not produce touch event for conducting liquid, and can produce touch event for the touch of finger.Even if now touch-screen has conducting liquid, time user is with finger point touching screen, still equally normally touch event can be produced, that is now still can by finger normal running touch-screen.Therefore improve touch-screen reference value by the step (4) of the present embodiment, until can't detect the touch event of liquid, can effectively the touch event of conducting liquid be filtered out.
In the present embodiment step (5), start a timer, can't detect a period of time 100ms of touch event at touch-screen after, the reference value of touch-screen is rolled back initial value.After the reference value of touch-screen being reduced to initial value in step (5), detect and whether recognize touch event, if recognize touch event, illustrate that touch-screen still exists the media such as conducting liquid, now just need again to perform step (4), to carry out the touch event of filtering conducting liquid generation by improving touch-screen reference value; If identify less than touch event, illustrate that touch-screen does not exist liquid, now the reference value of touch-screen is remained on initial value, make touch-screen after conducting liquid disappears, can maximum sensitivity be returned to.
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (5)
1. prevent conducting liquid from causing a method for touch-screen misoperation, it is characterized in that, comprise the following steps:
(1) the changing value Δ C of current touch screen electric capacity is obtained;
(2) judge whether the changing value Δ C of current touch screen electric capacity is in the variation range of the touch-screen electric capacity that conducting liquid causes;
If so, then represent that touch-screen has conducting liquid, the region having conducting liquid on judgement touch-screen, then enters step (3);
If not, then represent that touch-screen does not have conducting liquid;
(3) detecting on touch-screen has the region of conducting liquid whether to recognize touch event;
If so, step (4) is then entered;
If not, then step (5) is entered;
(4) improve the reference value of current touch screen, perform step (3);
(5) start a timer, after timet, the reference value of touch-screen is reduced to initial value; Then judge whether touch-screen has touch event;
If so, then represent that touch-screen has touch event, perform step (4);
If not, then represent that touch-screen does not have touch event, namely touch-screen does not have conducting liquid.
2. the method preventing conducting liquid from causing touch-screen misoperation according to claim 1, is characterized in that, in described step (2), the variation range of the touch-screen electric capacity that conducting liquid causes is 40 ~ 60.
3. the method preventing conducting liquid from causing touch-screen misoperation according to claim 1, is characterized in that, in described step (5), time T is 100ms.
4. the method preventing conducting liquid from causing touch-screen misoperation according to claim 1, is characterized in that, in described step (5), the initial value of touch-screen reference value is 16.
5. the method preventing conducting liquid from causing touch-screen misoperation according to claim 1, is characterized in that, in described step (4), touch-screen reference value improves 10 at every turn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310237233.9A CN103324373B (en) | 2013-06-14 | 2013-06-14 | A kind of method preventing conducting liquid from causing touch-screen misoperation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310237233.9A CN103324373B (en) | 2013-06-14 | 2013-06-14 | A kind of method preventing conducting liquid from causing touch-screen misoperation |
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| CN103324373A CN103324373A (en) | 2013-09-25 |
| CN103324373B true CN103324373B (en) | 2016-04-06 |
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Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103645822B (en) * | 2013-12-24 | 2016-05-04 | 上海华勤通讯技术有限公司 | The foreign matter detecting method of touch-screen and touch-screen |
| CN106030469B (en) * | 2013-12-31 | 2021-05-11 | 通用电气公司 | Touch screen display device and touch input control method |
| TWI497394B (en) * | 2014-03-12 | 2015-08-21 | Au Optronics Corp | Electronic device and method for determining touch point |
| CN104063101B (en) | 2014-05-30 | 2016-08-24 | 小米科技有限责任公司 | Touch screen control method and device |
| CN105266606B (en) * | 2014-07-04 | 2018-01-02 | 佛山市顺德区美的电热电器制造有限公司 | Electric cooking pot and its control method, control device |
| CN104156120B (en) * | 2014-08-22 | 2019-03-15 | Oppo广东移动通信有限公司 | A kind of switching method of touch control manner, device and mobile device |
| CN105988781B (en) * | 2015-02-03 | 2020-05-15 | 敦泰电子有限公司 | Electronic equipment, application program calling method and calling device |
| US20160283017A1 (en) * | 2015-03-27 | 2016-09-29 | Synaptics Incorporated | Hybrid detection for a capacitance input 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 |
| 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 |
| CN106354261B (en) * | 2016-09-05 | 2019-07-09 | 广东小天才科技有限公司 | A kind of switching method and device, mobile device of mobile device input mode |
| CN106618187A (en) * | 2016-10-12 | 2017-05-10 | 广东美的厨房电器制造有限公司 | Anti-overflowing method and anti-overflowing equipment used for household appliances and household appliance |
| WO2018090278A1 (en) * | 2016-11-17 | 2018-05-24 | 深圳市汇顶科技股份有限公司 | Method and device for determining touch position on capacitive screen |
| CN106775322B (en) * | 2016-12-23 | 2019-10-15 | 维沃移动通信有限公司 | A kind of method preventing virtual key false triggering and mobile terminal |
| CN109407871B (en) * | 2017-08-16 | 2024-03-19 | 西安中兴新软件有限责任公司 | Method and device for identifying soaking state and electronic equipment |
| WO2019153249A1 (en) * | 2018-02-09 | 2019-08-15 | 鹤壁天海电子信息系统有限公司 | Terminal device, capacitive touchscreen, and touch recognition method thereof |
| CN110134295B (en) * | 2018-02-09 | 2022-09-20 | 鹤壁天海电子信息系统有限公司 | Terminal device, capacitive touch screen and touch identification method thereof |
| TWI671665B (en) * | 2018-06-07 | 2019-09-11 | 李尚禮 | Touch-sensing device and sensing method thereof |
| US10983642B2 (en) * | 2018-07-30 | 2021-04-20 | Texas Instruments Incorporated | Using driven shield and touch elements lock algorithm for achieving liquid tolerant capacitive touch solution |
| CN109002216B (en) * | 2018-07-31 | 2021-04-27 | 广州视源电子科技股份有限公司 | Touch screen repairing method and device and electronic equipment |
| CN112737556A (en) * | 2020-12-25 | 2021-04-30 | 珠海格力电器股份有限公司 | Control method and control device for touch key and household appliance |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102467302A (en) * | 2010-11-05 | 2012-05-23 | 上海天马微电子有限公司 | Detection method for capacitance type touch screen to distinguish conducting liquid from fingers |
| CN102945097A (en) * | 2012-11-22 | 2013-02-27 | 广东欧珀移动通信有限公司 | Method and system for anti-interference of touch screen |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009068991A1 (en) * | 2007-11-30 | 2009-06-04 | Toyota Jidosha Kabushiki Kaisha | Capacitance touch sensing device and door locking device |
| JP4994489B2 (en) * | 2010-10-19 | 2012-08-08 | パナソニック株式会社 | Touch panel device |
| CN102221947A (en) * | 2011-03-25 | 2011-10-19 | 苏州瀚瑞微电子有限公司 | Automatic adaptation method for capacitive touch under different environments |
-
2013
- 2013-06-14 CN CN201310237233.9A patent/CN103324373B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102467302A (en) * | 2010-11-05 | 2012-05-23 | 上海天马微电子有限公司 | Detection method for capacitance type touch screen to distinguish conducting liquid from fingers |
| CN102945097A (en) * | 2012-11-22 | 2013-02-27 | 广东欧珀移动通信有限公司 | Method and system for anti-interference of touch screen |
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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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