CN102841715A - Capacitive touch sensor and touch control terminal and anti-interference method and system thereof - Google Patents
Capacitive touch sensor and touch control terminal and anti-interference method and system thereof Download PDFInfo
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- CN102841715A CN102841715A CN2012102822637A CN201210282263A CN102841715A CN 102841715 A CN102841715 A CN 102841715A CN 2012102822637 A CN2012102822637 A CN 2012102822637A CN 201210282263 A CN201210282263 A CN 201210282263A CN 102841715 A CN102841715 A CN 102841715A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
Abstract
The invention relates to the technical field of a touch sensor, and provides an anti-interference method. The method includes the following steps: a touch control terminal is judged if the touch control terminal enters into a charging state, if the touch control terminal enters into the charging state, then follow-up procedures are carried out; interference is detected; when an interference according with a first preset condition is detected, then a touch screen driving frequency is selected to trip off interference frequency. The invention further provides an anti-interference system, a capacitive touch sensor and a touch control terminal. The capacitive touch sensor, the touch control terminal and the anti-interference method and the system thereof detect interference after the touch control terminal enters into the charging state, when the interference fitting the preset condition is detected, the touch screen driving frequency is selected to trip off the interference frequency, so that influences to touch control operation by common mode interference generated when the touch control terminal is connected with a charger and charged can be reduced or eliminated.
Description
Technical field
The present invention relates to the touch sensor technologies field, particularly relate to a kind of capacitive touch screen, touch control terminal and anti-interference method thereof and system.
Background technology
Along with the development of touch technology and portable terminal technology, the more and more mobile terminal adopts touch control manner to carry out man-machine interaction.At present the touch-screen that adopted of portable terminal mainly contains two kinds of capacitive touch screen and resistive touch screens, and wherein capacitance type touch control screen has obtained more and more users' favor with its good sharpness, transmittance and sense of touch.
The capacitance touching control portable terminal is when bringing good experience to the user; Also inevitably having some problems, is example with the mobile phone, and the capacitance touching control mobile phone is when using the charger mobile phone batteries to charge; If charger does not carry out good Electro Magnetic Compatibility (EMC; Electro Magnetic Compatibility) design, the common mode interference that charge power supply produced can not get effective inhibition, and this common mode interference will cause the problem that the malfunctioning grade of touch-control can't operating handset.
Summary of the invention
The present invention is directed to the above-mentioned defective of prior art, a kind of anti-interference method and system are provided, the common mode interference that is produced in the time of reducing or eliminate the charging of touch control terminal connection charger is to the influence of touch control operation.
The present invention also provides a kind of capacitive touch screen and touch control terminal.
The technical scheme that the present invention adopts is:
A kind of anti-interference method, said method comprises the steps:
Judge whether touch control terminal gets into charged state, if then carry out subsequent step;
Detect and disturb;
Detect when meeting the first pre-conditioned interference, select the touch-screen driving frequency with the said interfering frequency of tripping.
The present invention also provides a kind of jamproof system, and said system comprises:
The charged state judging unit is used to judge whether touch control terminal gets into charged state;
The Interference Detection unit is used for detecting and disturbs;
Disturb judging unit, be used to judge the detected interference and first pre-conditioned and the 3rd pre-conditioned whether the conforming to;
The frequency hopping control module is used for selecting the touch-screen driving frequency with the said interfering frequency of tripping detecting when meeting first pre-conditioned and the 3rd pre-conditioned interference.
A kind of capacitive touch screen comprises touch controller, and said touch controller comprises aforesaid jamproof system.
A kind of touch control terminal, said touch control terminal comprises main control chip, said touch control terminal also comprises aforesaid capacitive touch screen;
Said main control chip comprises charge notification unit, charging control unit and interference informing judging unit,
Said charge notification unit is used for that the notice touch controller gets into charge mode when touch control terminal is connected with charger and the battery of touch control terminal charged, and the charged state judging unit of said touch controller judges when receiving the notice of said entering charge mode whether touch control terminal gets into charged state;
Said charging control unit is used for when said interference informing judgment unit judges has said interference informing; Charge closing perhaps reduces charging current; Perhaps after the screen state detection arrives the end of operation of user to screen, open charging again or recovers normal charging current;
Said interference informing judging unit is used for before reading the touch coordinate of user on screen, having judged whether said interference informing that said interference informing sends to the interference informing judging unit by said interference informing transmitting element.
The present invention disturbs through detecting after getting into charged state at touch control terminal; Detecting when meeting pre-conditioned interference; Select the touch-screen driving frequency with the tripping interfering frequency; Thereby can reduce or eliminate the influence of the common mode interference that produced when touch control terminal connects the charger charging, make the touch-screen of controlling that the user also can be good under the state of touch control terminal charging touch control operation.
Description of drawings
Fig. 1 is the anti-interference method process flow diagram of the embodiment of the invention 1;
Fig. 2 is the detailed realization flow figure of step S103 in the embodiment of the invention 1;
Fig. 3 is the anti-interference method process flow diagram of the embodiment of the invention 2;
Fig. 4 is the anti-interference method process flow diagram of the embodiment of the invention 3;
Fig. 5 is the anti-interference method process flow diagram of the embodiment of the invention 4;
Fig. 6 is the jamproof system structured flowchart of the embodiment of the invention 5;
Fig. 7 is the jamproof system structured flowchart of the embodiment of the invention 6;
Fig. 8 is the touch control terminal structured flowchart of the embodiment of the invention 8.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.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.
The embodiment of the invention provides a kind of anti-interference method, and this method comprises the steps:
Judge whether touch control terminal gets into charged state, if then carry out subsequent step;
Detect and disturb;
Detect when meeting the first pre-conditioned interference, select the touch-screen driving frequency with the tripping interfering frequency.
The embodiment of the invention also provides a kind of jamproof system, and this system comprises:
The charged state judging unit is used to judge whether touch control terminal gets into charged state;
The Interference Detection unit is used for detecting and disturbs;
Disturb judging unit, be used to judge detected interference, second pre-conditioned, three pre-conditioned whether conform to pre-conditioned with first;
The frequency hopping control module is used for selecting the touch-screen driving frequency with the tripping interfering frequency detecting when meeting first pre-conditioned and the 3rd pre-conditioned interference.
The embodiment of the invention also provides a kind of capacitive touch screen, comprises touch controller, and this touch controller comprises above-mentioned jamproof system.
The embodiment of the invention also provides a kind of touch control terminal, comprises main control chip, also comprises above-mentioned capacitive touch screen;
Main control chip comprises charge notification unit, charging control unit and interference informing judging unit,
The charge notification unit is used for that the notice touch controller gets into charge mode when touch control terminal is connected with charger and the battery of touch control terminal charged, and the charged state judging unit of touch controller judges whether touch control terminal gets into charged state when receiving the notice that gets into charge mode;
Charging control unit is used for when the interference informing judgment unit judges has interference informing; Charge closing perhaps reduces charging current; Perhaps after the screen state detection arrives the end of operation of user to screen, open charging again or recovers normal charging current;
The interference informing judging unit is used for before reading the touch coordinate of user on screen, having judged whether interference informing that interference informing sends to the interference informing judging unit by the interference informing transmitting element.
Touch control terminal in the embodiment of the invention can be touch-control class portable terminals such as mobile phone, panel computer.
The embodiment of the invention is disturbed through detecting after getting into charged state at touch control terminal; Detecting when meeting pre-conditioned interference; Select the touch-screen driving frequency with the tripping interfering frequency; Thereby can reduce or eliminate the influence of the common mode interference that produced when touch control terminal connects the charger charging, make the touch-screen of controlling that the user also can be good under the state of touch control terminal charging touch control operation.
Embodiment 1:
See also shown in Figure 1ly, be the anti-interference method process flow diagram of the embodiment of the invention 1.This method comprises the steps:
Step S101: judge whether touch control terminal gets into charged state, if then carry out subsequent step.
This step can be through touch control terminal main control chip cooperates realization with touch controller in the capacitive touch screen, touch controller is a chip of controlling touch in the capacitive touch screen.With after charger is connected, charger charges through the battery of power supply to touch control terminal at touch control terminal, and this moment, main control chip notice touch controller got into charge mode.Touch controller detects the corresponding interface sign after receiving the notice that gets into charge mode, judges whether touch control terminal gets into charged state.For example; Main control chip can deposit specific register in corresponding bid value (also specific numerical value) when touch control terminal connection charger charged; Whether touch controller can detect to deposit in these registers opens the bid value that frequency hopping detects, and the bid value of depositing in these registers is exactly the corresponding interface sign.
Step S102: detect and disturb.
This step detects the common mode interference that whether has charging to cause through touch controller and exists; During concrete the realization; Can judge having or not of common mode interference and power through the otherness that detects sampled data, sampled data is meant the capacitive sensing data on the capacitive touch screen that the sample circuit of touch controller collects.Detect once and calculate time of finishing about 3ms.In order to improve the accuracy of detection, can suitably increase detection number of times to current frequency.
Step S103: detect when meeting the first pre-conditioned interference, select the touch-screen driving frequency with the said interfering frequency of tripping.
This step finds that at touch controller the common mode interference characteristic occurs, and when also promptly detecting common mode interference, it is first pre-conditioned to judge whether this common mode interference meets, if meet then through frequency hopping to avoid this common mode interference.Detailed step is as shown in Figure 2, and Fig. 2 is the detailed realization flow figure of step S103 in the embodiment of the invention 1, and step S103 further comprises the steps:
Steps A 1: judge the detected interference and first pre-conditioned whether the conforming to.
In this step, the first pre-conditioned condition that the influential common mode interference of touch control operation is set that exists when charging through charger that is meant according to touch control terminal, it is stronger common mode interference that the influential common mode interference of touch control operation generally is identified as.Because the existence of disturbing and altering a great deal in the short time; So sampled data must differ greatly; Therefore can set first pre-conditioned according to the gap value of sampled data; For example set the lower limit of a gap value 15, and pre-conditioned as first with this as the sampled data gap value, when actual detected to the sampled data gap value just be judged as when surpassing 15 to exist and meet the first pre-conditioned interference.First pre-conditioned be the condition of frequency hopping for the first time.First pre-conditioned be not changeless; Can in testing process, change according to certain judgment mechanism according to actual conditions; First pre-conditioned (also be judgment threshold) of a special value of for example can on the minimum gap value of detected sampled data, adding up as next time; Perhaps when the minimum gap value of detected sampled data itself when very big, directly get this minimum gap value first pre-conditioned as next time.
Steps A 2: detected interference scans detected interfering frequency during with first pre-conditioned the conforming to.
When detecting in the steps A 1 when meeting the first pre-conditioned common mode interference, touch controller can scan current common mode interference frequency.
Steps A 3:, select suitable touch-screen driving frequency with the said interfering frequency of tripping according to the interfering frequency that scans.
After scanning current common mode interference frequency through steps A 2, touch controller is selected suitable touch-screen driving frequency with the current common mode interference frequency of tripping from the frequency storehouse of self.
Whether present embodiment detection earlier has interference to exist, and avoid disturbing through frequency hopping if having then, thereby the common mode interference that reduction or elimination touch control terminal were produced when connecting the charger charging is to the influence of touch control operation.
Embodiment 2:
See also shown in Figure 3ly, be the anti-interference method process flow diagram of the embodiment of the invention 2.This embodiment and embodiment 1 major different are that this embodiment does not detect at once and disturbs after getting into charged state, disturbs but when the user wants to carry out touch control operation, just begin to detect.This method comprises the steps:
Step S201: judge whether touch control terminal gets into charged state.If, execution in step S202; Otherwise, finish this process, continue to carry out other programs in the touch control terminal main flow.
Step S202: judge whether screen is activated or user's function screen whether.If, execution in step S203; Otherwise, finish this process, continue to carry out other programs in the touch control terminal main flow.
In the charging process, when the user need not carry out touch control operation, can not carry out Interference Detection, can not influence and charge normal; When the user need carry out touch control operation, then need carry out Interference Detection.Therefore, this step is based on this actual demand, and at first whether judges has the demand of touch control operation.After generally not having screen operator in a period of time, touch control terminal can close screen with economize on electricity; Therefore this step can through touch controller judge whether screen is activated or the user whether function screen and then judges have the touch control operation demand; Can judge after screen is closed whether screen is activated, then directly whether function screen does not come judges whether the demand of touch control operation is arranged through judges when screen is closed.
Step S203: detect and disturb.
Step S204: judge the detected interference and first pre-conditioned whether the conforming to.If, execution in step S205; Otherwise, finish this process, continue to carry out other programs in the touch control terminal main flow.
Step S205: scan detected interfering frequency.
Step S206:, select suitable touch-screen driving frequency with the said interfering frequency of tripping according to the interfering frequency that scans.
Wherein, concrete realization and the embodiment 1 of step S201, S203～S206 are similar, do not give unnecessary details here.
Present embodiment just begins to detect when the user wants to carry out touch control operation and disturbs after getting into charged state, has avoided unnecessary detection, more meets practical application request, and efficient is higher.
Embodiment 3:
See also shown in Figure 4ly, be the anti-interference method process flow diagram of the embodiment of the invention 3.This embodiment and embodiment 1 major different be, this embodiment detects undesired signal after choosing the proper frequency frequency hopping again, if find still to have doubtful signal, and temporary close charger charge function then, or charging current reduced.
Step S301: judge whether touch control terminal gets into charged state.If, execution in step S302; Otherwise, finish this process, continue to carry out other programs in the touch control terminal main flow.
Step S302: detect and disturb.
Step S303: judge the detected interference and first pre-conditioned whether the conforming to.If, execution in step S205; Otherwise, finish this process, continue to carry out other programs in the touch control terminal main flow.
Step S304: scan detected interfering frequency.
Step S305:, select suitable touch-screen driving frequency with the said interfering frequency of tripping according to the interfering frequency that scans.
Wherein, concrete realization and the embodiment 1 of step S301～S305 are similar, do not give unnecessary details here.
Step S306: detect and disturb.
After detecting interference in the step in front and choosing optimal frequency (disturbing minimum) frequency hopping, there are two kinds of situation:
1, the interference on the optimal frequency itself is also very big, makes that the user can not normal running touch-screen or operating difficulties, generally shows as phenomenons such as inaccurate, contact drift occur touching.
2, when detect disturbing, owing to disturb suddenly big or suddenly small instability, caused to detect to have certain uncertainty, disturb lessly when on optimal frequency, detecting, might become big but when user's operating touch-screen, disturb.
Based on above 2 points, after carrying out frequency hopping, again undesired signal is detected again.At this moment, belonging to detect once more after the frequency hopping and disturb, is to detect through touch controller equally.
Step S307: judge the detected interference and second pre-conditioned whether the conforming to.If, execution in step S308; Otherwise, finish this process, continue to carry out other programs in the touch control terminal main flow.
This step is that to judge once more whether detected common mode interference meets second pre-conditioned.The second pre-conditioned condition that is the transmission interference informing to main control chip is for example set the lower limit of a gap value 15 as the sampled data gap value, and pre-conditioned as second with this.The difference of finding sampled data when touch controller still obviously, meet second when pre-conditioned, explain that interference is still very big, influential under this situation to function screen, need main control chip to take appropriate measures and prevent disturbing effect.Second pre-conditioned be rigid condition, can no longer change after configuring.
Step S308: send interference informing.
When detecting when meeting the second pre-conditioned common mode interference, touch controller sends interference informing in corresponding interface and gives main control chip.After sending interference informing, can also judge whether frequency hopping once more according to the size of disturbing, for example judge detected interference and the 3rd pre-conditioned whether conforming to; Detected interference scans detected interfering frequency, and according to the interfering frequency that scans, selects suitable touch-screen driving frequency with the tripping interfering frequency during with the 3rd pre-conditioned conforming to.The 3rd pre-conditioned be once more the condition of frequency hopping; Be on the first pre-conditioned basis, to generate; The 3rd pre-conditioned sampled data gap value that sets can improve according to certain judgment mechanism on the basis of the first pre-conditioned sampled data gap value; For example following the following of gap value that is limited to the sampled data of 15, the three pre-conditioned settings of the gap value of the sampled data of the first pre-conditioned setting is limited to 30, surpasses 30 in detected interference and just can carry out frequency hopping once more.
Step S309: charge closing perhaps reduces charging current.
When having larger interference, can influence touch control operation.Need take certain measure this moment so that touch control operation can carry out smoothly.In this step, control charge closing perhaps with the charging current reduction, thereby do not influence user's operational requirements through main control chip.If select to reduce charging current, then generally can directly charging current be reduced to minimumly, make minimum is reduced in the influence of touch control operation.
After the step S308, also can direct charge closing perhaps charging current be reduced, but before main control chip reads the touch coordinate of user on screen; Judged whether interference informing; If have, then the explanation interference is still stronger, and charge closing perhaps reduces charging current.If because Interference Detection through judging whether screen is activated and carries out; The user possibly not carry out actual touch control operation after activating screen; So still can not take the measure avoiding disturbing this moment; But wait for the user actual touch control operation is arranged, when main control chip need read touch coordinate, charge closing or charging current is reduced again.Avoided unnecessary avoiding to disturb behave like this, more met practical application request, efficient is higher.
After step S309, finish this process, continue to carry out other programs in the touch control terminal main flow.Perhaps, can also return execution in step S302 or step S306, still detect and disturb and frequency hopping.After charge closing perhaps reduced charging current, load changed, and disturbed can reduce relatively a lot, and detect frequency hopping this moment, and successful probability can increase greatly, also was the possibility increase that tripping is disturbed.Through test, the success ratio that under charged state not, detects frequency hopping is than increasing under the charged state more than one times.
This embodiment is after choosing the proper frequency frequency hopping; Again detect; If finding still has doubtful signal, temporary close charger charge function then, or charging current reduced; Do not jump under the case of successful in frequency hopping like this, can be through charge closing device charge function or the influence that the approach that charging current reduces is avoided interference.
Embodiment 4:
See also shown in Figure 5ly, be the anti-interference method process flow diagram of the embodiment of the invention 4.This embodiment and embodiment 3 major different are, after this embodiment reduces in charge closing or with charging current, increase the whether judgement of end of operation to the user, if user's end of operation is then opened charging again or recovered normal charging current.Step S301～S309 among step S401 in this method～S409 and the embodiment 3 is similar, does not give unnecessary details here.Begin to describe the concrete realization of this method below from step S410:
Step S410: whether judges finishes to the operation of screen.If, execution in step S411 then; Otherwise, return execution in step S402.
Whether this step finishes through the operation of touch controller judges to screen.
Step S411: open charging again or recover normal charging current.
This step is after touch controller detects the end of operation of user to screen, and the notice main control chip is opened charging again or recovered normal charging current.
Because occasion, the custom of each user's operation are different, the time of end of operation cannot treat different things as the same.In touch-screen; After the user does not have operation a period of time (for example 10s); The duty of touch controller can change, and gets into power saving (Low Power) pattern by normal mode, therefore can be through the duty of touch controller senses touch controller; When the duty that detects touch controller was Low Power pattern, touch controller notice main control chip was opened charging again or is recovered normal charging current.This mode had both been saved the time and the space of the other timing of touch controller, can the time that the user does not have an operation be become configurable parameter again.
After step S411, return execution in step S401, repeat above-mentioned detection frequency hopping flow process.
Present embodiment is charging or recover normal charging current again after the user has operated screen, make to charge normal and can in time recover, and the time of recovering to charge normal can control by configuration order, increased degree of freedom and controllability.
Embodiment 5:
See also shown in Figure 6ly, be the jamproof system structured flowchart of the embodiment of the invention 5.This jamproof system 1 comprises:
Charged state judging unit 11 is connected with Interference Detection unit 12, is used to judge whether touch control terminal gets into charged state, and when touch control terminal gets into charged state, notifies Interference Detection unit 12;
Disturb judging unit 13; Be connected with frequency hopping control module 14 with Interference Detection unit 12 respectively; Be used to judge the 12 detected interference of Interference Detection unit and first pre-conditioned and the 3rd pre-conditioned whether the conforming to; Judging when meeting first pre-conditioned and the 3rd pre-conditioned interference, with result notification frequency hopping control module 14;
Frequency hopping control module 14; Be connected with disturbing judging unit 13; Be used for receiving the existence of disturbing judging unit 13 to send when meeting first pre-conditioned and the 3rd pre-conditioned interference informing; Also, select suitable touch-screen driving frequency with the tripping interfering frequency promptly detecting when meeting first pre-conditioned and the 3rd pre-conditioned interference.
The concrete method of work and the method in the previous embodiment 1～4 of above-mentioned each unit are similar, no longer describe here.
Whether present embodiment detection earlier has interference to exist, and avoid disturbing through frequency hopping if having then, thereby the common mode interference that reduction or elimination touch control terminal were produced when connecting the charger charging is to the influence of touch control operation.The jamproof system 1 of present embodiment can be used for all kinds of touch-control portable terminals such as mobile phone, panel computer.
Embodiment 6:
See also shown in Figure 7ly, be the jamproof system structured flowchart of the embodiment of the invention 6.Present embodiment repeats no more with embodiment 5 identical parts here, only describes and embodiment 5 different portions:
In the present embodiment, frequency hopping control module 14 comprises:
Interfering frequency scan module 141; Be connected with frequency hopping module 142 with disturbing judging unit 13 respectively; Be used in detected interference pre-conditioned during with the 3rd pre-conditioned conforming to first; Also, scan detected interfering frequency, and this interfering frequency is sent to frequency hopping module 142 promptly receiving the existence of disturbing judging unit 13 to send when meeting first pre-conditioned and the 3rd pre-conditioned interference informing;
Frequency hopping control module 14 except with disturb judging unit 13 is connected, also is connected notice Interference Detection unit 12 detection interference once more after frequency hopping module 142 is implemented for the first time frequency hoppings with Interference Detection unit 12.
Said interference judging unit in the present embodiment also is used to judge the detected interference and second pre-conditioned whether the conforming to.
The jamproof system 1 of present embodiment also comprises:
Screen state detecting unit 15; Be connected with Interference Detection unit 12; Be used to detect whether screen is activated, the user whether function screen or user whether the operation of screen is finished, and testing result is sent to the main control chip in Interference Detection unit 12 and the touch control terminal;
Interference informing transmitting element 16; Be connected with disturbing judging unit 13; Be used for frequency hopping module 142 select the touch-screen driving frequency with the tripping interfering frequency after, when Interference Detection unit 13 detects and meets the second pre-conditioned interference, send interference informing and give the main control chip in the touch control terminal;
The concrete method of work and the method in the previous embodiment 1～4 of above-mentioned each unit or module are similar, no longer describe here.
Present embodiment just begins to detect when the user wants to carry out touch control operation and disturbs after getting into charged state, has avoided unnecessary detection, more meets practical application request, and efficient is higher; After choosing the proper frequency frequency hopping; Again detect,, then notify main control chip to take certain measure if find that doubtful signal is still arranged; Charge closing device charge function for example; Or charging current reduced, do not jump under the case of successful influence that can avoid interference through charge closing device charge function or the approach that charging current is reduced like this in frequency hopping; The notice main control chip charges again or recovers normal charging current after the user has operated screen, makes to charge normal and can in time recover.And the time of recovering to charge normal can control by configuration order, increased degree of freedom and controllability.
Embodiment 7:
See also shown in Figure 8ly, present embodiment provides a kind of capacitive touch screen 3, comprises touch controller 2, and this touch controller 2 comprises embodiment 5 or embodiment 6 described jamproof systems 1.This capacitive touch screen 3 can be applicable on the touch control terminal 5, realizes touch controllable function, and can reduce or eliminate the influence to touch control operation of the common mode interference that produced when touch control terminal connection charger charges, does not influence user's when charging normal use.
Embodiment 8:
See also shown in Figure 8ly, be the touch control terminal structured flowchart of the embodiment of the invention 8.This touch control terminal 5 comprises the capacitive touch screen 3 and main control chip 4 that embodiment 7 provides, and main control chip 4 comprises:
Charge notification unit 41; Be connected with charged state judging unit 11; Be used for that notice touch controller 2 gets into charge modes when touch control terminal 5 is connected with the charger (not shown) and the battery of touch control terminal 5 charged, the charged state judging unit 11 of touch controller 2 judges whether touch control terminal 5 gets into charged state when receiving the notice that gets into charge mode;
Interference informing judging unit 43; Be connected with charging control unit 42 respectively at interference informing transmitting element 16; Be used for before reading the touch coordinate of user on screen, judge whether interference informing transmitting element 16 has sent interference informing, and judged result is sent to charging control unit 42.
Main control chip 4 and capacitive touch screen 3 carry out mutual with cooperate, wherein the concrete method of work of each unit and the method in the previous embodiment 1～4 are similar, here no longer description.
The touch control terminal 5 that present embodiment provides can be realized touch controllable function, and can reduce or eliminate the influence to touch control operation of the common mode interference that produced when touch control terminal connects the charger charging, user's normal use when not influencing charging.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (16)
1. an anti-interference method is characterized in that, said method comprises the steps:
Judge whether touch control terminal gets into charged state, if then carry out subsequent step;
Detect and disturb;
Detect when meeting the first pre-conditioned interference, select the touch-screen driving frequency with the said interfering frequency of tripping.
2. method according to claim 1 is characterized in that, judges that said whether touch control terminal gets into charged state, if then carry out after the step of subsequent step, also comprises the steps:
Detect whether screen is activated or user's function screen whether;
Detect that screen is activated or during user's function screen, carry out the step that said detection is disturbed.
3. method according to claim 1 and 2 is characterized in that, detects when meeting the first pre-conditioned interference said, selects after the step of touch-screen driving frequency with the said interfering frequency of tripping, also comprises the steps:
Detect once more and disturb;
Detect when meeting the second pre-conditioned interference, send interference informing;
Charge closing perhaps reduces charging current.
4. method according to claim 3 is characterized in that, after said charge closing or the step with the charging current reduction, also comprises the steps:
Whether the detection user finishes to the operation of screen;
After detecting the end of operation of user, open charging again or recover normal charging current screen.
5. method according to claim 4 is characterized in that, whether said detection user finishes to the operation of screen; After detecting the end of operation of user, open the step of perhaps recovering normal charging current of charging again and be specially screen:
The duty of senses touch controller;
When the duty that detects touch controller is battery saving mode, opens charging again or recovers normal charging current.
6. method according to claim 1 and 2 is characterized in that, saidly judges whether touch control terminal gets into charged state, specifically comprises if then carry out the step of subsequent step:
Detect the numerical value in the particular register, judge whether touch control terminal gets into charged state.
7. method according to claim 1 and 2 is characterized in that, said detecting when meeting the first pre-conditioned interference selected the touch-screen driving frequency and specifically comprised with the step of the said interfering frequency of tripping:
Judge the detected interference and first pre-conditioned whether the conforming to;
Detected interference scans detected interfering frequency during with first pre-conditioned the conforming to;
According to the interfering frequency that scans, select suitable touch-screen driving frequency with the said interfering frequency of tripping.
8. method according to claim 3 is characterized in that, before said charge closing or the step with the charging current reduction, also comprises the steps:
Before reading the touch coordinate of user on screen, judged whether said interference informing, if having, the step of then carrying out said charge closing or charging current being reduced.
9. method according to claim 3 is characterized in that, after said charge closing or the step with the charging current reduction, returns the step of carrying out said detection interference or the step that detects interference once more.
10. method according to claim 4; It is characterized in that; Said detect the end of operation of user to screen after; Again open charging and perhaps recover after the step of normal charging current, return execution is said judges whether touch control terminal gets into charged state, if then carry out the step of subsequent step.
11. method according to claim 3 is characterized in that, detects when meeting the second pre-conditioned interference said, sends after the step of interference informing, also comprises the steps:
Judge detected interference and the 3rd pre-conditioned whether conforming to;
Detected interference scans detected interfering frequency during with the 3rd pre-conditioned conforming to;
According to the interfering frequency that scans, select suitable touch-screen driving frequency with the said interfering frequency of tripping.
12. a jamproof system is characterized in that, said system comprises:
The charged state judging unit is used to judge whether touch control terminal gets into charged state;
The Interference Detection unit is used for detecting and disturbs;
Disturb judging unit, be used to judge the detected interference and first pre-conditioned and the 3rd pre-conditioned whether the conforming to;
The frequency hopping control module is used for selecting the touch-screen driving frequency with the said interfering frequency of tripping detecting when meeting first pre-conditioned and the 3rd pre-conditioned interference.
13. system according to claim 12 is characterized in that, said frequency hopping control module specifically comprises:
The interfering frequency scan module is used in detected interference pre-conditionedly during with the 3rd pre-conditioned conforming to first, scans detected interfering frequency;
The frequency hopping module is used for selecting suitable touch-screen driving frequency with the said interfering frequency of tripping according to the interfering frequency that scans.
14., it is characterized in that said interference judging unit also is used to judge the detected interference and second pre-conditioned whether the conforming to according to claim 12 or 13 described systems; Said system also comprises:
The screen state detecting unit is used to detect whether screen is activated, whether whether function screen or user finish to the operation of screen the user;
The interference informing transmitting element is used for selecting the touch-screen driving frequency with tripping after the said interfering frequency, when the Interference Detection unit detects and meets the second pre-conditioned interference at the frequency hopping control module, sends interference informing;
Said Interference Detection unit charged state judgment unit judges touch control terminal get into charged state or the screen state detection is activated to screen, or detect user's function screen, or when detecting the user to the end of operation of screen or the frequency hopping control module select the touch-screen driving frequency and detect interference with tripping after the said interfering frequency.
15. a capacitive touch screen comprises touch controller, it is characterized in that, said touch controller comprises the described jamproof system of claim 14.
16. a touch control terminal, said touch control terminal comprises main control chip, it is characterized in that, said touch control terminal also comprises the described capacitive touch screen of claim 15;
Said main control chip comprises charge notification unit, charging control unit and interference informing judging unit,
Said charge notification unit is used for that the notice touch controller gets into charge mode when touch control terminal is connected with charger and the battery of touch control terminal charged, and the charged state judging unit of said touch controller judges when receiving the notice of said entering charge mode whether touch control terminal gets into charged state;
Said charging control unit is used for when said interference informing judgment unit judges has said interference informing; Charge closing perhaps reduces charging current; Perhaps after the screen state detection arrives the end of operation of user to screen, open charging again or recovers normal charging current;
Said interference informing judging unit is used for before reading the touch coordinate of user on screen, having judged whether said interference informing that said interference informing sends to the interference informing judging unit by said interference informing transmitting element.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210282263.7A CN102841715B (en) | 2012-08-09 | 2012-08-09 | Capacitive touch screen, touch control terminal and anti-interference method thereof and system |
| PCT/CN2013/079149 WO2014023147A1 (en) | 2012-08-09 | 2013-07-10 | Capacitance touch sensor, touch terminal, and anti-interference method and system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210282263.7A CN102841715B (en) | 2012-08-09 | 2012-08-09 | Capacitive touch screen, touch control terminal and anti-interference method thereof and system |
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| Publication Number | Publication Date |
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| CN102841715A true CN102841715A (en) | 2012-12-26 |
| CN102841715B CN102841715B (en) | 2016-01-20 |
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| WO (1) | WO2014023147A1 (en) |
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| WO2014023147A1 (en) | 2014-02-13 |
| CN102841715B (en) | 2016-01-20 |
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