CN102368171A - Automatic recovering system of touch screen controller - Google Patents
Automatic recovering system of touch screen controller Download PDFInfo
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- CN102368171A CN102368171A CN201110277912XA CN201110277912A CN102368171A CN 102368171 A CN102368171 A CN 102368171A CN 201110277912X A CN201110277912X A CN 201110277912XA CN 201110277912 A CN201110277912 A CN 201110277912A CN 102368171 A CN102368171 A CN 102368171A
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Abstract
This invention discloses an automatic recovering system of a touch screen controller. The automatic recovering system comprises the touch screen controller, a mono-stable trigger, a delay circuit, a baseband processor, a delay reset circuit and an OR gate integrated circuit, wherein the baseband processor is connected with the first input end of the OR gate integrated circuit; the delay reset circuit is connected with the second input end of the OR gate integrated circuit; the output end of the OR gate integrated circuit is connected with the touch screen controller; the touch screen controller is respectively connected with the touch screen and the mono-stable trigger; and the mono-stable trigger is respectively connected with the delay circuit and the delay reset circuit. The automatic recovering system of the touch screen controller, provided by the invention, is used for generating a pulse signal to control a state of the mono-stable trigger when a touch screen is scanned through the touch screen controller, automatically generating a reset signal through the delay reset circuit after the touch screen controller is broken by static electricity, and resetting the touch screen controller so that the touch screen controller can restart to work. According to the automatic recovering system of the touch screen controller, the problem that the touch screen controller cannot be reset is solved.
Description
Technical field
The present invention relates to electronic equipment, particularly a kind of automatic recovery system of touch screen controller with touch-screen.
Background technology
At present, the controller of capacitance touch screen exists by the electrostatic breakdown duty when running into very strong static, can't operate as normal, and situation about touching has appearred detecting not.When this happens, if want controller to rework, or cutting off controller power source re-powers startup, or reset controller again, makes controller return to original state.These two kinds of measures all need baseband processing chip to know controller cisco unity malfunction, but the malfunction of controller this moment, can't notify BBP, therefore existing design can't make controller reset.
Summary of the invention
In view of the weak point of above-mentioned prior art, the object of the present invention is to provide a kind of automatic recovery system of touch screen controller, to solve the problem that touch screen controller can't reset when the malfunction.
In order to achieve the above object, the present invention has taked following technical scheme:
A kind of automatic recovery system of touch screen controller wherein, comprising:
Be used for the periodic scan touch-screen, and the touch screen controller of output control pulse signal;
Be used to receive said control wave, the monostalbe trigger of corresponding output high level;
Be used to control the delay circuit that monostalbe trigger is exported the duration of high level;
Be used to export the BBP of base band reset signal;
Be used to export the time-delay reset circuit of reset signal;
Be used for according to said base band reset signal and reset signal corresponding control touch screen controller resets or door integrated circuit;
Said BBP with or the first input end of door integrated circuit is connected, time-delay reset circuit with or second input end of integrated circuit be connected, output terminal said or an integrated circuit is connected with said touch screen controller;
Said touch screen controller is connected with monostalbe trigger with touch-screen respectively, and said monostalbe trigger is connected with time-delay reset circuit with said delay circuit respectively.
The automatic recovery system of described touch screen controller, wherein, the time sum of said delay circuit and time-delay reset circuit time-delay is greater than the scan period of touch screen controller.
The automatic recovery system of described touch screen controller; Wherein, said delay circuit comprises first resistance and first electric capacity, a termination high level of said first resistance; The other end is connected the other end ground connection of said first electric capacity with an end of the monostalbe trigger and first electric capacity respectively.
The automatic recovery system of described touch screen controller; Wherein, Said time-delay reset circuit comprises second resistance and second electric capacity; One end of said second resistance is connected with monostalbe trigger, the other end respectively with or second input end and an end of second electric capacity of door integrated circuit be connected another termination high level of said second electric capacity.
The automatic recovery system of described touch screen controller, wherein, said or door integrated circuit is or the door chip.
Compared to prior art; The automatic recovery system of touch screen controller provided by the invention produces the state that pulse signal is controlled monostalbe trigger, after touch screen controller is by electrostatic breakdown when the touch screen controller touch screen scanning; Automatically produce a reset signal through time-delay reset circuit; The touch screen controller that resets makes it can restart work, has solved the irreducible problem of touch screen controller.And the present invention only needs at touch screen controller output control pulse during the work period, other the time touch screen controller can keep sleep state, therefore can extra increase power consumption.
Description of drawings
Fig. 1 is monostalbe trigger input and output oscillograms.
Fig. 2 is the structural representation of the automatic recovery system of touch screen controller of the present invention.
The circuit theory diagrams of the automatic recovery system of Fig. 3 touch screen controller of the present invention.
Embodiment
The present invention provides a kind of automatic recovery system of touch screen controller, and is clearer, clear and definite for making the object of the invention, technical scheme and effect, below develops simultaneously embodiment to further explain of the present invention with reference to accompanying drawing.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
See also Fig. 1, it is the input/output relation figure of monostalbe trigger.The output pin of monostalbe trigger output two states: 0 and 1, when input pin input during by high step-down or by the low saltus step that uprises, output pin output 1, but 1 be temporary transient, and after a period of time, its output pin reverts to automatically exports 0.As shown in the figure, the duration T of the output pin output 1 of monostalbe trigger, this time can be by the delay circuit control of outside.
See also Fig. 2, the automatic recovery system of touch screen controller 11 provided by the invention comprises touch screen controller 11, monostalbe trigger 21, delay circuit 31, BBP 41, time-delay reset circuit 51 and or door integrated circuit 61.Said BBP 41 with or the first input end of door integrated circuit 61 is connected, time-delay reset circuit 51 with or second input end of integrated circuit 61 be connected, output terminal said or an integrated circuit 61 is connected with said touch screen controller 11; Said touch screen controller 11 is connected with monostalbe trigger 21 with touch-screen respectively, and said monostalbe trigger 21 is connected with time-delay reset circuit 51 with said delay circuit 31 respectively.
Wherein, said touch screen controller 11 is the capacitance touch screen controller, is used for the periodic scan touch-screen, and the output control pulse signal, produces a saltus step from high to low.Said monostalbe trigger 21 is used to receive the control wave of touch screen controller 11 outputs, corresponding output high level.Said delay circuit 31 is used to control the duration of monostalbe trigger 21 output high level.
Said BBP 41 be used to export the base band reset signal to or the first input end of door integrated circuit 61; Time-delay reset circuit 51 is used for when monostalbe trigger 21 output low levels; Produce reset signal to or second input end of door integrated circuit 61; Or 61 of integrated circuit of door are used for according to said base band reset signal and reset signal, and output corresponding signal control touch screen controller 11 resets.Should or door integrated circuit 61 with the base band reset signal of the reset signal of time-delay reset circuit 51 output and BBP 41 outputs as input, time-delay reset circuit 51 still to be BBP 41 export reset signals can both reset touch screen controller 11 no matter.
In the specific implementation; Please consult Fig. 3 in the lump; A said or door integrated circuit be or door chip U1, and the time that said delay circuit 31 is kept monostalbe trigger 21 output high level is T1, and it is T2 that time-delay reset circuit 51 makes monostalbe trigger 21 export the time that high level keep; The present invention only need make the scan period of the time sum (being T1+T2) of delay circuit 31 and time-delay reset circuit 51 time-delays greater than touch screen controller 11, and automatic recovery system of the present invention just can operate as normal.
In the embodiment of the invention; Said delay circuit 31 comprises first resistance R 1 and first capacitor C 1; One termination high level VCC of said first resistance R 1, the other end is connected with the end of monostalbe trigger 21 with first capacitor C 1 respectively, the other end ground connection of said first capacitor C 1.
Said time-delay reset circuit 51 comprises second resistance R 2 and second capacitor C 2; One end of said second resistance R 2 is connected with monostalbe trigger 21; The other end respectively with or second input end of door integrated chip U1 and an end of second capacitor C 2 be connected another termination high level VCC of said second capacitor C 2.
Below in conjunction with Fig. 2 and Fig. 3 the principle of work of the automatic recovery system of touch screen controller 11 provided by the invention is elaborated:
When touch screen controller 11 operate as normal, the reset signal of BBP 41 is a high level, and touch screen controller 11 can not reset.The periodic touch screen scanning of touch screen controller 11 meetings, when it scanned, through the in house software of touch screen controller 11, the control output control pulse produced a saltus step from high to low.Monostalbe trigger 21 is exported a high level like this; Make the output of time-delay reset circuit 51 maintain high level; Output through T1 monostalbe trigger 21 after the time becomes low level, and at this moment as long as touch screen controller 11 is exported the gating pulse that height changes at T2 in the time, monostalbe trigger 21 will be exported high level once more; Make or the input of door chip U1 remains on high level, thereby can not reset touch screen controller 11.Because different touch screen controller 11; The different scan periods is arranged; As long as the delay time of configuration first resistance R 1, first capacitor C 1 and second resistance R 2, second capacitor C 2 is greater than time scan period of touch screen controller 11, automatic recovery system just can operate as normal.
If T1+T2 is after the time for process; Monostalbe trigger 21 is not exported high level (being that touch screen controller 11 does not have output control pulse); This moment, the output of second resistance R 2 and second capacitor C 2 just became low level, produced a reseting signal reset touch screen controller 11.After touch screen controller 11 is by electrostatic breakdown; Because of it can't operate as normal; So can't continue the output control pulse signal, this moment, second resistance R 2 and second capacitor C 2 just produced a reseting signal reset touch screen controller 11 automatically, made it can restart work.
And, because automatic recovery system provided by the invention, only needing at touch screen controller output control pulse during 11 work periods, other times touch screen controller 11 can keep sleep state, increase power consumption that therefore can be not extra.
In sum; The automatic recovery system of touch screen controller provided by the invention produces pulse signal when the touch screen controller touch screen scanning, control the state of monostalbe trigger; After touch screen controller is by electrostatic breakdown; Automatically produce a reset signal through time-delay reset circuit, the touch screen controller that resets makes it can restart work, has solved the irreducible problem of touch screen controller.Automatic recovery system provided by the invention does not influence the reset operation of BBP to touch screen controller simultaneously, and is compatible strong.And the circuit of automatic recovery system provided by the invention is simple, and cost is low, can be applicable to the capacitance touch screen controller of each producer, also has low in power consumption, is fit to promote the use.
It is understandable that, concerning those of ordinary skills, can be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, and all these changes or replacement all should belong to the protection domain of the appended claim of the present invention.
Claims (5)
1. the automatic recovery system of a touch screen controller is characterized in that, comprising:
Be used for the periodic scan touch-screen, and the touch screen controller of output control pulse signal;
Be used to receive said control wave, the monostalbe trigger of corresponding output high level;
Be used to control the delay circuit that monostalbe trigger is exported the duration of high level;
Be used to export the BBP of base band reset signal;
Be used to export the time-delay reset circuit of reset signal;
Be used for according to said base band reset signal and reset signal corresponding control touch screen controller resets or door integrated circuit;
Said BBP with or the first input end of door integrated circuit is connected, time-delay reset circuit with or second input end of integrated circuit be connected, output terminal said or an integrated circuit is connected with said touch screen controller;
Said touch screen controller is connected with monostalbe trigger with touch-screen respectively, and said monostalbe trigger is connected with time-delay reset circuit with said delay circuit respectively.
2. the automatic recovery system of touch screen controller according to claim 1 is characterized in that, the time sum of said delay circuit and time-delay reset circuit time-delay is greater than the scan period of touch screen controller.
3. the automatic recovery system of touch screen controller according to claim 1 and 2; It is characterized in that; Said delay circuit comprises first resistance and first electric capacity; One termination high level of said first resistance, the other end are connected the other end ground connection of said first electric capacity with an end of the monostalbe trigger and first electric capacity respectively.
4. the automatic recovery system of touch screen controller according to claim 1 and 2; It is characterized in that; Said time-delay reset circuit comprises second resistance and second electric capacity; One end of said second resistance is connected with monostalbe trigger, the other end respectively with or second input end and an end of second electric capacity of door integrated circuit be connected another termination high level of said second electric capacity.
5. the automatic recovery system of touch screen controller according to claim 1 is characterized in that, said or door integrated circuit is or the door chip.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110277912 CN102368171B (en) | 2011-09-19 | 2011-09-19 | Automatic recovering system of touch screen controller |
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| CN 201110277912 CN102368171B (en) | 2011-09-19 | 2011-09-19 | Automatic recovering system of touch screen controller |
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| CN102368171B CN102368171B (en) | 2013-07-03 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103546138A (en) * | 2013-10-12 | 2014-01-29 | 美的集团股份有限公司 | Touch key control circuit |
| WO2018010084A1 (en) * | 2016-07-12 | 2018-01-18 | 深圳市汇顶科技股份有限公司 | Esd testing device, integrated circuit, and method applicable in digital integrated circuit |
| CN109192152A (en) * | 2018-08-29 | 2019-01-11 | 努比亚技术有限公司 | A kind of LCD control circuit and terminal |
| CN114578982A (en) * | 2020-12-02 | 2022-06-03 | Oppo广东移动通信有限公司 | Touch screen reset circuit, touch screen and wearable equipment |
| WO2024045291A1 (en) * | 2022-09-01 | 2024-03-07 | 圣邦微电子（北京）股份有限公司 | One-shot circuit |
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| CN1030148A (en) * | 1987-06-22 | 1989-01-04 | 中国矿业学院北京研究生部 | The digital automatic reset circuit of the auto-reset method of computing machine and computing machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103546138A (en) * | 2013-10-12 | 2014-01-29 | 美的集团股份有限公司 | Touch key control circuit |
| WO2018010084A1 (en) * | 2016-07-12 | 2018-01-18 | 深圳市汇顶科技股份有限公司 | Esd testing device, integrated circuit, and method applicable in digital integrated circuit |
| CN108028530A (en) * | 2016-07-12 | 2018-05-11 | 深圳市汇顶科技股份有限公司 | ESD detection devices, integrated circuit and method applied to digital integrated electronic circuit |
| KR101925237B1 (en) * | 2016-07-12 | 2019-02-08 | 선전 구딕스 테크놀로지 컴퍼니, 리미티드 | Esd detection apparatus and method applied to digital integrated circuit, and integrated circuit |
| US10359460B2 (en) | 2016-07-12 | 2019-07-23 | Shenzhen GOODIX Technology Co., Ltd. | ESD detection apparatus and method applied to digital integrated circuit, and integrated circuit |
| CN109192152A (en) * | 2018-08-29 | 2019-01-11 | 努比亚技术有限公司 | A kind of LCD control circuit and terminal |
| CN109192152B (en) * | 2018-08-29 | 2021-01-01 | 努比亚技术有限公司 | LCD control circuit and terminal |
| CN114578982A (en) * | 2020-12-02 | 2022-06-03 | Oppo广东移动通信有限公司 | Touch screen reset circuit, touch screen and wearable equipment |
| WO2024045291A1 (en) * | 2022-09-01 | 2024-03-07 | 圣邦微电子（北京）股份有限公司 | One-shot circuit |
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| CN102368171B (en) | 2013-07-03 |
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Effective date of registration: 20210104 Address after: 313000 room 1020, science and Technology Pioneer Park, 666 Chaoyang Road, Nanxun Town, Nanxun District, Huzhou, Zhejiang. Patentee after: Huzhou You Yan Intellectual Property Service Co.,Ltd. Address before: 510000 No. 106 Fengze East Road, Nansha District, Guangzhou City, Guangdong Province Patentee before: Guangzhou shengxia Intellectual Property Operation Co.,Ltd. Effective date of registration: 20210104 Address after: 510000 No. 106 Fengze East Road, Nansha District, Guangzhou City, Guangdong Province Patentee after: Guangzhou shengxia Intellectual Property Operation Co.,Ltd. Address before: 516006 Guangdong province Huizhou Zhongkai hi tech Development Zone No. 23 District Patentee before: HUIZHOU TCL MOBILE COMMUNICATION Co.,Ltd. |
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Effective date of registration: 20210604 Address after: 215300 No.61, Wenpu East Road, Shipu, Qiandeng Town, Kunshan City, Suzhou City, Jiangsu Province Patentee after: XIANGSHI PHOTOELECTRIC TECHNOLOGY (KUNSHAN) Co.,Ltd. Address before: 313000 room 1020, science and Technology Pioneer Park, 666 Chaoyang Road, Nanxun Town, Nanxun District, Huzhou, Zhejiang. Patentee before: Huzhou You Yan Intellectual Property Service Co.,Ltd. |
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