CN102841715B - Capacitive touch screen, touch control terminal and anti-interference method thereof and system - Google Patents
Capacitive touch screen, touch control terminal and anti-interference method thereof and system Download PDFInfo
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- CN102841715B CN102841715B CN201210282263.7A CN201210282263A CN102841715B CN 102841715 B CN102841715 B CN 102841715B CN 201210282263 A CN201210282263 A CN 201210282263A CN 102841715 B CN102841715 B CN 102841715B
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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 present invention relates to touch sensor technologies field, provide a kind of anti-interference method, described method comprises the steps: to judge whether touch control terminal enters charged state, if then perform subsequent step; Detect interference; Detect when meeting the first pre-conditioned interference, select touch-screen driving frequency with tripping interfering frequency.Present invention also offers a kind of jamproof system, capacitive touch screen and touch control terminal.The present invention by detecting interference after touch control terminal enters charged state, detect meet pre-conditioned interference time, select touch-screen driving frequency with tripping interfering frequency, thus the common mode interference produced when can reduce or eliminate the charging of touch control terminal connecting charger is on the impact of touch control operation.
Description
Technical field
The present invention relates to 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 mobile terminal technology, increasing mobile terminal adopts touch control manner to carry out man-machine interaction.The touch-screen that current mobile terminal adopts mainly contains capacitive touch screen and resistive touch screen two kinds, and wherein capacitance type touch control screen is with its good sharpness, transmittance and sense of touch, obtains the favor of more and more user.
Capacitance touching control mobile terminal is while bringing good experience to user, also inevitably there are some problems, for mobile phone, capacitance touching control mobile phone is when using charger to charge to battery of mobile phone, if charger does not carry out good Electro Magnetic Compatibility (EMC, ElectroMagneticCompatibility) design, the common mode interference that charge power supply produces can not get effective suppression, and this common mode interference cannot the problem of operating handset by causing touch-control malfunctioning etc.
Summary of the invention
The present invention is directed to the above-mentioned defect of prior art, provide a kind of anti-interference method and system, the common mode interference produced when can reduce or eliminate the charging of touch control terminal connecting charger is on the impact of touch control operation.
Present invention also offers a kind of capacitive touch screen and touch control terminal.
The technical solution used in the present invention is:
A kind of anti-interference method, described method comprises the steps:
Judge whether touch control terminal enters charged state, if then perform subsequent step;
Detect interference;
Detect when meeting the first pre-conditioned interference, select touch-screen driving frequency with interfering frequency described in tripping.
Present invention also offers a kind of jamproof system, described system comprises:
Charged state judging unit, for judging whether touch control terminal enters charged state;
Interference Detection unit, for detecting interference;
Interference judging unit, for judging whether the interference that detects pre-conditionedly pre-conditionedly conforms to the 3rd with first;
Frequency hopping control unit, for detect meet the first pre-conditioned and the 3rd pre-conditioned interference time, select touch-screen driving frequency with interfering frequency described in tripping.
A kind of capacitive touch screen, comprise touch controller, described touch controller comprises aforesaid jamproof system.
A kind of touch control terminal, described touch control terminal comprises main control chip, and described touch control terminal also comprises aforesaid capacitive touch screen;
Described main control chip comprises charge notification unit, charging control unit and interference notice judging unit,
Described charge notification unit is used for notifying that touch controller enters charge mode when touch control terminal to be connected with charger and to charge to the battery of touch control terminal, and the charged state judging unit of described touch controller judges when entering the notice of charge mode described in receiving whether touch control terminal enters charged state;
Described charging control unit is used for when described interference notice judging unit judges have described interference to notify, charge closing or charging current is reduced, or after screen state detecting unit detects that user is to the end of operation of screen, reopen charging or recover normal charging current;
Described interference notice judging unit, for before reading the touch coordinate of user on screen, has judged whether that described interference notifies, by described interference, described interference notice notifies that transmitting element sends to interference notice judging unit.
The present invention by detecting interference after touch control terminal enters charged state, detect meet pre-conditioned interference time, select touch-screen driving frequency with tripping interfering frequency, thus when can reduce or eliminate the charging of touch control terminal connecting charger the common mode interference that produces on the impact of touch control operation, manipulation touch-screen that also can be good under the state that user is charged at touch control terminal.
Accompanying drawing explanation
Fig. 1 is the anti-interference method process flow diagram of the embodiment of the present invention 1;
Fig. 2 is the detailed realization flow figure of step S103 in the embodiment of the present invention 1;
Fig. 3 is the anti-interference method process flow diagram of the embodiment of the present invention 2;
Fig. 4 is the anti-interference method process flow diagram of the embodiment of the present invention 3;
Fig. 5 is the anti-interference method process flow diagram of the embodiment of the present invention 4;
Fig. 6 is the jamproof system structured flowchart of the embodiment of the present invention 5;
Fig. 7 is the jamproof system structured flowchart of the embodiment of the present invention 6;
Fig. 8 is the touch control terminal structured flowchart of the embodiment of the present invention 8.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiments provide a kind of anti-interference method, the method comprises the steps:
Judge whether touch control terminal enters charged state, if then perform subsequent step;
Detect interference;
Detect when meeting the first pre-conditioned interference, select touch-screen driving frequency with tripping interfering frequency.
The embodiment of the present invention additionally provides a kind of jamproof system, and this system comprises:
Charged state judging unit, for judging whether touch control terminal enters charged state;
Interference Detection unit, for detecting interference;
Whether interference judging unit, for judging that the interference that detects is pre-conditioned with first, second pre-conditioned, the 3rd pre-conditionedly conforming to;
Frequency hopping control unit, for detect meet the first pre-conditioned and the 3rd pre-conditioned interference time, select touch-screen driving frequency with tripping interfering frequency.
The embodiment of the present invention additionally provides a kind of capacitive touch screen, comprises touch controller, and this touch controller comprises above-mentioned jamproof system.
The embodiment of the present invention additionally 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 notice judging unit,
Charge notification unit is used for notifying that touch controller enters charge mode when touch control terminal to be connected with charger and to charge to the battery of touch control terminal, and the charged state judging unit of touch controller judges when receiving the notice entering charge mode whether touch control terminal enters charged state;
Charging control unit is used for when disturbing the judgement of notice judging unit to have interference notice, charge closing or charging current is reduced, or after screen state detecting unit detects that user is to the end of operation of screen, reopen charging or recover normal charging current;
Interference notice judging unit, for before reading the touch coordinate of user on screen, has judged whether interference notice, and interference notice sends to interference notice judging unit by interference notice transmitting element.
Touch control terminal in the embodiment of the present invention can be the touch-control such as mobile phone, panel computer class mobile terminal.
The embodiment of the present invention by detecting interference after touch control terminal enters charged state, detect meet pre-conditioned interference time, select touch-screen driving frequency with tripping interfering frequency, thus when can reduce or eliminate the charging of touch control terminal connecting charger the common mode interference that produces on the impact of touch control operation, manipulation touch-screen that also can be good under the state that user is charged at touch control terminal.
embodiment 1:
Referring to shown in Fig. 1, is the anti-interference method process flow diagram of the embodiment of the present invention 1.The method comprises the steps:
Step S101: judge whether touch control terminal enters charged state, if then perform subsequent step.
This step to coordinate with the touch controller in capacitive touch screen by the main control chip of touch control terminal and realizes, and touch controller is the chip controlling in capacitive touch screen to touch.After touch control terminal is connected with charger, charger is charged by the battery of power supply to touch control terminal, and now main control chip notice touch controller enters charge mode.Touch controller detects corresponding interface flag after receiving the notice entering charge mode, judges whether touch control terminal enters charged state.Such as, when touch control terminal connecting charger charges, main control chip can by corresponding bid value (also specific numerical value) stored in specific register, touch controller can detect in these registers the bid value whether deposited and open frequency hopping and detect, and the bid value deposited in these registers is exactly corresponding interface flag.
Step S102: detect interference.
This step detects by touch controller the common mode interference that whether having charges causes to be existed, during specific implementation, otherness by detecting sampled data judges presence or absence and the power of common mode interference, and sampled data refers to the capacitive sensing data in the capacitive touch screen that the sample circuit of touch controller collects.Detect once and calculate the complete time at about 3ms.In order to improve the accuracy of detection, the detection number of times to ongoing frequency suitably can be increased.
Step S103: detect when meeting the first pre-conditioned interference, select touch-screen driving frequency with interfering frequency described in tripping.
At touch controller, this step finds that common mode interference feature occurs, when common mode interference also namely being detected, can judge whether this common mode interference meets first pre-conditioned, if meet, by frequency hopping to avoid this common mode interference.As shown in Figure 2, Fig. 2 is the detailed realization flow figure of step S103 in the embodiment of the present invention 1 to detailed step, and step S103 comprises the steps: further
Steps A 1: judge whether the interference that detects pre-conditionedly conforms to first.
In this step, first pre-conditionedly refers to the condition set the influential common mode interference of touch control operation existed when being charged by charger according to touch control terminal, and being generally identified as the influential common mode interference of touch control operation is stronger common mode interference.Due to interference existence and alter a great deal in the short time, so sampled data inherently differs greatly, therefore can set first pre-conditioned according to the gap value of sampled data, such as set the lower limit of a gap value 15 as sampled data gap value, and pre-conditioned in this, as first, be just judged as existing when the actual sampled data gap value detected is more than 15 and meet the first pre-conditioned interference.First pre-conditioned be first time frequency hopping condition.First pre-conditioned be not changeless, can change according to certain judgment mechanism according to actual conditions in testing process, such as can in the sampled data detected in minimum gap value a cumulative special value as first pre-conditioned (also i.e. judgment threshold) of next time, or when the minimum gap value of the sampled data detected is inherently very large, it is pre-conditioned as first of next time directly to get this minimum gap value.
Steps A 2: the interference detected with first pre-conditioned conform to time, the interfering frequency that Scanning Detction arrives.
When detect in steps A 1 meet the first pre-conditioned common mode interference time, touch controller can scan current common mode interference frequency.
Steps A 3: according to the interfering frequency scanned, selects suitable touch-screen driving frequency with interfering frequency described in tripping.
After scanning current common mode interference frequency by steps A 2, touch controller selects suitable touch-screen driving frequency with the current common mode interference frequency of tripping from the frequency storehouse of self.
Whether the present embodiment first detects has interference to exist, if having, is avoided interference by frequency hopping, thus the common mode interference produced when reducing or eliminate the charging of touch control terminal connecting charger is on the impact of touch control operation.
embodiment 2:
Referring to shown in Fig. 3, is the anti-interference method process flow diagram of the embodiment of the present invention 2.This embodiment and the topmost difference of embodiment 1 are that this embodiment, after entering charged state, does not detect interference at once, but just start when user wants to carry out touch control operation to detect interference.The method comprises the steps:
Step S201: judge whether touch control terminal enters charged state.If so, step S202 is performed; Otherwise, terminate this process, continue to perform other programs in touch control terminal main flow.
Step S202: judge whether screen is activated or user's whether function screen.If so, step S203 is performed; Otherwise, terminate this process, continue to perform other programs in touch control terminal main flow.
In charging process, when user does not need to carry out touch control operation, can not Interference Detection be carried out, can not affect and charge normal; When user needs to carry out touch control operation, then need to carry out Interference Detection.Therefore, this step, based on this actual demand, first judges whether user has the demand of touch control operation.Touch control terminal generally a period of time without screen operator after can close screen with economize on electricity, therefore by touch controller, this step judges whether screen is activated or user's whether function screen and then judge whether user has touch control operation demand, can judge whether screen is activated after screen is closed, then direct by judging whether function screen judges whether user has the demand of touch control operation to user when screen is not closed.
Step S203: detect interference.
Step S204: judge whether the interference that detects pre-conditionedly conforms to first.If so, step S205 is performed; Otherwise, terminate this process, continue to perform other programs in touch control terminal main flow.
Step S205: the interfering frequency that Scanning Detction arrives.
Step S206: according to the interfering frequency scanned, selects suitable touch-screen driving frequency with interfering frequency described in tripping.
Wherein, the specific implementation of step S201, S203 ~ S206 is similar to Example 1, does not repeat herein.
The present embodiment is after entering charged state, and just start when user wants to carry out touch control operation to detect interference, avoid unnecessary detection, more realistic application demand, efficiency is higher.
embodiment 3:
Referring to shown in Fig. 4, is the anti-interference method process flow diagram of the embodiment of the present invention 3.This embodiment and the topmost difference of embodiment 1 are that this embodiment, after choosing suitable frequency frequency hopping, detects undesired signal again, if find still there is doubtful signal, then temporary close charger charge function, or charging current are reduced.
Step S301: judge whether touch control terminal enters charged state.If so, step S302 is performed; Otherwise, terminate this process, continue to perform other programs in touch control terminal main flow.
Step S302: detect interference.
Step S303: judge whether the interference that detects pre-conditionedly conforms to first.If so, step S205 is performed; Otherwise, terminate this process, continue to perform other programs in touch control terminal main flow.
Step S304: the interfering frequency that Scanning Detction arrives.
Step S305: according to the interfering frequency scanned, selects suitable touch-screen driving frequency with interfering frequency described in tripping.
Wherein, the specific implementation of step S301 ~ S305 is similar to Example 1, does not repeat herein.
Step S306: detect interference.
Detect in step above and disturb and after choosing optimal frequency (disturbing minimum) frequency hopping, there are two kinds of situations:
1, the interference on optimal frequency itself is also very large, makes user can not normal running touch-screen or operating difficulties, generally shows as phenomenons such as occurring touching inaccurate, contact drift.
2, when detection interference, owing to disturbing suddenly big or suddenly small instability, cause detection and there is certain uncertainty, when optimal frequency detects, interference is less, but interference likely becomes large when user operation touch-screen.
Based on above 2 points, after carrying out a frequency hopping, more again undesired signal is detected.Now, again detecting interference after belonging to frequency hopping, is detected by touch controller equally.
Step S307: judge whether the interference that detects pre-conditionedly conforms to second.If so, step S308 is performed; Otherwise, terminate this process, continue to perform other programs in touch control terminal main flow.
It is second pre-conditioned that this step is whether the common mode interference judging again to detect meets.The second pre-conditioned condition informing main control chip for sending interference, such as, set the lower limit of a gap value 15 as sampled data gap value, and pre-conditioned in this, as second.When touch controller find the difference of sampled data still obviously, meet second pre-conditioned time, interference is described still very greatly, has impact to function screen under this situation, need main control chip to take appropriate measures and prevent disturbing effect.Second pre-conditioned be rigid condition, can no longer change after setting.
Step S308: send interference notice.
When detect meet the second pre-conditioned common mode interference time, touch controller sends interference at corresponding interface and informs main control chip.After transmission interference notice, frequency hopping again can also be judged whether according to the size of interference, such as, judge whether the interference that detects pre-conditionedly conforms to the 3rd; The interference detected with the 3rd pre-conditioned conform to time, the interfering frequency that Scanning Detction arrives, and according to the interfering frequency scanned, select suitable touch-screen driving frequency with tripping interfering frequency.3rd pre-conditioned be again the condition of frequency hopping, generate on the first pre-conditioned basis, 3rd pre-conditioned set sampled data gap value can improve according to certain judgment mechanism on the basis of the first pre-conditioned sampled data gap value, the lower limit of the gap value of the sampled data of the such as first pre-conditioned setting is 15, the lower limit of the gap value of the sampled data of the 3rd pre-conditioned setting is 30, just can carry out frequency hopping again in the interference detected more than 30.
Step S309: charge closing or charging current is reduced.
When there is larger interference, touch control operation can be affected.Now need to take certain measure can carry out smoothly to make touch control operation.In this step, control charge closing by main control chip or charging current is reduced, thus not affecting the operational requirements of user.Reduce charging current if select, then generally directly charging current can be down to minimum, make to be down to minimum on the impact of touch control operation.
After step S308, also can not direct charge closing or charging current is reduced, but before main control chip reads the touch coordinate of user on screen, judge whether interference notice, if have, then illustrate that interference is still comparatively strong, charge closing or charging current reduced.If because by judging whether screen is activated the Interference Detection of carrying out, user may not carry out actual touch control operation after activating screen, so the measure avoided interference now still can not be taked, but when waiting for that user has actual touch control operation, main control chip needs to read touch coordinate, then charge closing or charging current is reduced.This avoid the unnecessary behave that avoids interference, more realistic application demand, efficiency is higher.
After step S309, terminate this process, continue to perform other programs in touch control terminal main flow.Or, can also return and perform step S302 or step S306, still detect interference and frequency hopping.After charge closing or reduction charging current, load changes, and interference can reduce a lot relatively, and now carry out detection frequency hopping, successful probability can increase greatly, the possibility increase of also i.e. tripping interference.After tested, under not charged state, the success ratio of frequency hopping is carried out detecting than increasing more than one times under charged state.
This embodiment is after choosing suitable frequency frequency hopping, re-start detection, if find still there is doubtful signal, then temporary close charger charge function, or charging current is reduced, like this under frequency hopping does not jump successful situation, by charge closing device charge function or the impact that the approach that charging current reduces is avoided interference.
embodiment 4:
Referring to shown in Fig. 5, is the anti-interference method process flow diagram of the embodiment of the present invention 4.This embodiment and the topmost difference of embodiment 3 be, this embodiment, in charge closing or after charging current being reduced, increases the judgement to user's whether end of operation, if user operation is complete, reopens charging or recover normal charging current.Step S301 ~ S309 in step S401 in the method ~ S409 and embodiment 3 is similar, does not repeat herein.The specific implementation of the method is described below from step S410:
Step S410: judge that whether user is complete to the operation of screen.If so, then step S411 is performed; Otherwise, return and perform step S402.
By touch controller, this step judges that whether user is complete to the operation of screen.
Step S411: reopen charging or recover normal charging current.
This step is after touch controller detects that user is to the end of operation of screen, and notice main control chip reopens charging or recovers normal charging current.
Due to occasion, the custom difference of each user operation, the time of end of operation cannot treat different things as the same.In touch-screen, after user is without operation a period of time (such as 10s), the duty of touch controller can change, power saving (LowPower) pattern is entered by normal mode, therefore the duty of touch controller can be detected by touch controller, when duty touch controller being detected is LowPower pattern, touch controller notice main control chip reopens charging or recovers normal charging current.This mode had both saved the Time and place of the other timing of touch controller, user can be become configurable parameter without the time operated again.
After step S411, return and perform step S401, repeat above-mentioned detection frequency hopping flow process.
The present embodiment again charges or recovers normal charging current after the complete screen of user operation, makes to charge normal and can recover in time, and the time of recovering to charge normal can be controlled by configuration order, adds degree of freedom and controllability.
The anti-interference method that embodiment 3 and embodiment 4 provide, from detecting frequency hopping to the process of charge closing, can realize when optimum in 600ms, the longlyest also can complete in 2.5s, and speed is fast, and efficiency is high.
embodiment 5:
Referring to shown in Fig. 6, is the jamproof system structured flowchart of the embodiment of the present invention 5.This jamproof system 1 comprises:
Charged state judging unit 11, is connected with Interference Detection unit 12, for judging whether touch control terminal enters charged state, and notifies Interference Detection unit 12 when touch control terminal enters charged state;
Interference Detection unit 12, respectively with charged state judging unit 11 with disturb judging unit 13 to be connected, for receiving after touch control terminal that charged state judging unit 11 sends enters the notice of charged state, detecting and disturbing;
Interference judging unit 13, be connected with Interference Detection unit 12 and frequency hopping control unit 14 respectively, for judging whether interference that Interference Detection unit 12 detects pre-conditionedly pre-conditionedly conforms to the 3rd with first, when judging to meet the first pre-conditioned and the 3rd pre-conditioned interference, result is notified frequency hopping control unit 14;
Frequency hopping control unit 14, be connected with interference judging unit 13, for receive existence that interference judging unit 13 sends meet first pre-conditioned and the 3rd pre-conditioned interference notifies time, also namely detect meet the first pre-conditioned and the 3rd pre-conditioned interference time, select suitable touch-screen driving frequency with tripping interfering frequency.
Method in the specific works method of above-mentioned each unit and previous embodiment 1 ~ 4 is similar, no longer describes herein.
Whether the present embodiment first detects has interference to exist, if having, is avoided interference by frequency hopping, thus the common mode interference produced when reducing or eliminate the charging of touch control terminal connecting charger is on the impact of touch control operation.The jamproof system 1 of the present embodiment can be used for all kinds of touch-control mobile terminal such as mobile phone, panel computer.
embodiment 6:
Referring to shown in Fig. 7, is the jamproof system structured flowchart of the embodiment of the present invention 6.The part that the present embodiment is identical with embodiment 5 repeats no more herein, only describes the part different from embodiment 5:
In the present embodiment, frequency hopping control unit 14 comprises:
Interfering frequency scan module 141, be connected with interference judging unit 13 and frequency hopper module 142 respectively, for the interference detected with first pre-conditioned with the 3rd pre-conditioned conform to time, also namely receive existence that interference judging unit 13 sends meet first pre-conditioned and the 3rd pre-conditioned interference notifies time, the interfering frequency that Scanning Detction arrives, and this interfering frequency is sent to frequency hopper module 142;
Frequency hopper module 142, is connected with interfering frequency scan module 141, for the interfering frequency scanned according to interfering frequency scan module 141, selects suitable touch-screen driving frequency with tripping interfering frequency.
Frequency hopping control unit 14, except being connected with interference judging unit 13, being also connected with Interference Detection unit 12, after frequency hopper module 142 implements first time frequency hopping, notifying that Interference Detection unit 12 detects interference again.
Described interference judging unit in the present embodiment is also for judging whether the interference that detects pre-conditionedly conforms to second.
The jamproof system 1 of the present embodiment also comprises:
Screen state detecting unit 15, be connected with Interference Detection unit 12, for detecting, whether screen is activated, user whether function screen or user whether complete to the operation of screen, and testing result is sent to the main control chip in Interference Detection unit 12 and touch control terminal;
Interference notice transmitting element 16, be connected with interference judging unit 13, for select at frequency hopper module 142 touch-screen driving frequency with tripping interfering frequency after, Interference Detection unit 13 detect and meet the second pre-conditioned interference time, send the main control chip disturbing and inform in touch control terminal;
Interference Detection unit 13 for judge at charged state judging unit 11 touch control terminal enter when charged state or screen state detecting unit 15 detect that screen is activated or user operation screen is detected or the end of operation of user to screen detected or frequency hopper module 142 select touch-screen driving frequency with tripping interfering frequency after detect interference.
Method in the specific works method of above-mentioned each unit or module and previous embodiment 1 ~ 4 is similar, no longer describes herein.
The present embodiment is after entering charged state, and just start when user wants to carry out touch control operation to detect interference, avoid unnecessary detection, more realistic application demand, efficiency is higher; After choosing suitable frequency frequency hopping, re-start detection, if find still there is doubtful signal, then notify that main control chip is to take certain measure, such as charge closing device charge function, or charging current is reduced, like this under frequency hopping does not jump successful situation, by charge closing device charge function or the impact that the approach that charging current reduces is avoided interference; After the complete screen of user operation, notify that main control chip again charges or recovers normal charging current, make to charge normal and can recover in time.And the time of recovering to charge normal can be controlled by configuration order, add degree of freedom and controllability.
embodiment 7:
Refer to shown in Fig. 8, present embodiments provide a kind of capacitive touch screen 3, comprise touch controller 2, this touch controller 2 comprises embodiment 5 or the jamproof system described in embodiment 61.This capacitive touch screen 3 can be applicable to, on touch control terminal 5, realize touch controllable function, and the common mode interference produced when can reduce or eliminate the charging of touch control terminal connecting charger is on the impact of touch control operation, does not affect the normal use of user during charging.
embodiment 8:
Referring to shown in Fig. 8, is the touch control terminal structured flowchart of the embodiment of the present 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, notify that touch controller 2 enters charge mode during for be connected with charger (not shown) at touch control terminal 5 and to charge to the battery of touch control terminal 5, the charged state judging unit 11 of touch controller 2 judges when receiving the notice entering charge mode whether touch control terminal 5 enters charged state;
Charging control unit 42, notify that judging unit 43 is connected with screen state detecting unit 15 with disturbing respectively, for when disturbing the judgement of notice judging unit 43 to have interference notice, charge closing or charging current is reduced, or after screen state detecting unit 15 detects that user is to the end of operation of screen, reopen charging or recover normal charging current;
Interference notice judging unit 43, be connected with charging control unit 42 respectively at interference notice transmitting element 16, for before reading the touch coordinate of user on screen, judge whether interference notice transmitting element 16 has sent interference notice, and judged result is sent to charging control unit 42.
Main control chip 4 and capacitive touch screen 3 carry out alternately with coordinate, the method wherein in the specific works method of each unit and previous embodiment 1 ~ 4 is similar, no longer describes herein.
The touch control terminal 5 that the present embodiment provides can realize touch controllable function, and the common mode interference produced when can reduce or eliminate the charging of touch control terminal connecting charger is on the impact of touch control operation, does not affect the normal use of user during charging.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (15)
1. an anti-interference method, is characterized in that, described method comprises the steps:
Judge whether touch control terminal enters charged state, if then perform subsequent step;
Detect interference;
Detect when meeting the first pre-conditioned interference, select touch-screen driving frequency with tripping interfering frequency, described first pre-conditionedly refers to the condition set the influential common mode interference of touch control operation existed when being charged by charger according to touch control terminal, sets first pre-conditioned according to the gap value of sampled data;
Again detect interference;
Detecting when meeting the second pre-conditioned interference, sending interference notice, the described second pre-conditioned condition informing main control chip for sending interference, set according to the gap value of sampled data second pre-conditioned;
Charge closing or charging current is reduced.
2. method according to claim 1, is characterized in that, judges whether touch control terminal enters charged state, if after then performing the step of subsequent step, also comprise the steps: described
Detect screen whether to be activated or user's whether function screen;
Detect screen be activated or user operation screen time, perform described detect interference step.
3. method according to claim 1, is characterized in that, described charge closing or by charging current reduce step after, also comprise the steps:
Detect user whether complete to the operation of screen;
Detect that user is to after the end of operation of screen, reopen charging or recover normal charging current.
4. method according to claim 3, is characterized in that, whether described detection user is complete to the operation of screen; Detect that user is to after the end of operation of screen, the step reopening charging or recovery normal charging current is specially:
Detect the duty of touch controller;
When duty touch controller being detected is battery saving mode, reopens charging or recover normal charging current.
5. method according to claim 1 and 2, is characterized in that, describedly judges whether touch control terminal enters charged state, if the step then performing subsequent step specifically comprises:
Detect the numerical value in particular register, judge whether touch control terminal enters charged state.
6. method according to claim 1 and 2, is characterized in that, described in detect when meeting the first pre-conditioned interference, select touch-screen driving frequency and specifically comprise with the step of interfering frequency described in tripping:
Judge whether the interference that detects pre-conditionedly conforms to first;
The interference detected with first pre-conditioned conform to time, the interfering frequency that Scanning Detction arrives;
According to the interfering frequency scanned, touch controller selects touch-screen driving frequency with interfering frequency described in tripping from the frequency storehouse of self.
7. method according to claim 1, is characterized in that, described charge closing or by charging current reduce step before, also comprise the steps:
Before reading the touch coordinate of user on screen, judge whether that described interference notifies, if having, then the step performing described charge closing or charging current is reduced.
8. method according to claim 1, is characterized in that, after described charge closing or the step that charging current reduced, returns to perform and describedly detects the step of interference or again detect the step of interference.
9. method according to claim 3, it is characterized in that, described detect that user is to the end of operation of screen after, after reopening the step of charging or recovery normal charging current, return to perform and describedly judge whether touch control terminal enters charged state, if then perform the step of subsequent step.
10. method according to claim 1, is characterized in that, described detect meet the second pre-conditioned interference time, after sending the step of interference notice, also comprise the steps:
Judge whether the interference that detects pre-conditionedly conforms to the 3rd; Described 3rd pre-conditioned be again the condition of frequency hopping;
The interference detected with the 3rd pre-conditioned conform to time, the interfering frequency that Scanning Detction arrives;
According to the interfering frequency scanned, touch controller selects touch-screen driving frequency with interfering frequency described in tripping from the frequency storehouse of self.
11. 1 kinds of jamproof systems, is characterized in that, described system comprises:
Charged state judging unit, for judging whether touch control terminal enters charged state;
Interference Detection unit, for detecting interference;
Interference judging unit, for judging whether the interference that detects pre-conditionedly pre-conditionedly conforms to the 3rd with first; Described first pre-conditionedly refers to the condition set the influential common mode interference of touch control operation existed when being charged by charger according to touch control terminal, sets first pre-conditioned according to the gap value of sampled data; Described 3rd pre-conditioned be again the condition of frequency hopping;
Frequency hopping control unit, for detect meet the first pre-conditioned and the 3rd pre-conditioned interference time, select touch-screen driving frequency with tripping interfering frequency.
12. systems according to claim 11, is characterized in that, described frequency hopping control unit specifically comprises:
Interfering frequency scan module, for the interference detected with first pre-conditioned with the 3rd pre-conditioned conform to time, the interfering frequency that Scanning Detction arrives;
Frequency hopper module, for the interfering frequency that basis scans, touch controller selects touch-screen driving frequency with interfering frequency described in tripping from the frequency storehouse of self.
13. systems according to claim 11 or 12, is characterized in that, described interference judging unit is also for judging whether the interference that detects pre-conditionedly conforms to second; Described system also comprises:
Screen state detecting unit, for detecting, whether screen is activated, user whether function screen or user whether complete to the operation of screen;
Interference notice transmitting element, for after frequency hopping control unit selection touch-screen driving frequency is with interfering frequency described in tripping, Interference Detection unit inspection to when meeting the second pre-conditioned interference, send interference notice; Described second pre-conditionedly informs the condition of main control chip for sending interference, sets second pre-conditioned according to the gap value of sampled data;
Described Interference Detection unit charged state judging unit judge touch control terminal enter when charged state or screen state detecting unit detect that screen is activated or user operation screen is detected or the end of operation of user to screen detected or frequency hopping control unit selection touch-screen driving frequency with interfering frequency described in tripping after detect interference.
14. 1 kinds of capacitive touch screen, comprise touch controller, it is characterized in that, described touch controller comprises jamproof system according to claim 13.
15. 1 kinds of touch control terminals, described touch control terminal comprises main control chip, it is characterized in that, described touch control terminal also comprises capacitive touch screen according to claim 14;
Described main control chip comprises charge notification unit, charging control unit and interference notice judging unit,
Described charge notification unit is used for notifying that touch controller enters charge mode when touch control terminal to be connected with charger and to charge to the battery of touch control terminal, and the charged state judging unit of described touch controller judges when receiving the notice entering charge mode whether touch control terminal enters charged state;
Described charging control unit is used for when described interference notice judging unit judges have described interference to notify, charge closing or charging current is reduced, or after screen state detecting unit detects that user is to the end of operation of screen, reopen charging or recover normal charging current;
Described interference notice judging unit, for before reading the touch coordinate of user on screen, has judged whether that described interference notifies, by described interference, described interference notice notifies that transmitting element sends to interference notice judging unit.
Priority Applications (2)
| 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 |
| 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 |
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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 |
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| Publication Number | Publication Date |
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| CN102841715A CN102841715A (en) | 2012-12-26 |
| CN102841715B true CN102841715B (en) | 2016-01-20 |
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| Country | Link |
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| WO (1) | WO2014023147A1 (en) |
Families Citing this family (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841715B (en) * | 2012-08-09 | 2016-01-20 | 深圳市汇顶科技股份有限公司 | Capacitive touch screen, touch control terminal and anti-interference method thereof and system |
| CN103677449B (en) * | 2012-08-30 | 2016-12-21 | 中兴通讯股份有限公司 | The method of adjustment of a kind of touch screen rate of scanning and electric terminal |
| CN103902116B (en) * | 2012-12-30 | 2017-04-12 | 比亚迪股份有限公司 | anti-interference method and device for capacitance detection |
| CN105093007B (en) * | 2013-01-22 | 2017-10-13 | 青岛海信移动通信技术股份有限公司 | The standard configuration charger method of discrimination of capacitive touch screen |
| US9041671B2 (en) * | 2013-03-12 | 2015-05-26 | Google Technology Holdings LLC | Adaptive touch sensor control based on identification of attached accessory |
| CN103389847B (en) * | 2013-07-23 | 2017-02-08 | 广东欧珀移动通信有限公司 | Touch control terminal and anti-interference method and system thereof |
| KR101921675B1 (en) * | 2014-01-26 | 2018-11-23 | 후아웨이 디바이스 (둥관) 컴퍼니 리미티드 | Touchscreen interference suppression method and apparatus, and terminal device |
| CN103840526B (en) * | 2014-03-17 | 2017-02-01 | 联想(北京)有限公司 | Method and device for processing information and electronic equipment |
| CN103997096B (en) * | 2014-05-30 | 2016-08-24 | 广东欧珀移动通信有限公司 | charging current control method and device |
| CN103995618B (en) * | 2014-06-09 | 2017-01-25 | 广东欧珀移动通信有限公司 | Method and device for adjusting firmware parameter value of terminal touch screen anti-interference filtering module |
| CN104656867A (en) * | 2015-03-16 | 2015-05-27 | 联想(北京)有限公司 | Control method, electronic equipment and charging equipment |
| CN104808847B (en) * | 2015-04-16 | 2018-03-27 | 广东欧珀移动通信有限公司 | Anti-interference method, device and touch sensor, the touch control terminal of touch-screen detection |
| EP3179598A4 (en) | 2015-10-16 | 2018-06-27 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method of eliminating interference on touch screen from charger, and mobile terminal |
| CN105389225A (en) * | 2015-11-25 | 2016-03-09 | 小米科技有限责任公司 | Touch screen reporting point processing method and apparatus |
| CN107436666B (en) * | 2016-05-26 | 2020-11-06 | 华为终端有限公司 | Control method and control device of power adapter |
| CN107562289A (en) * | 2016-06-30 | 2018-01-09 | 北京小米移动软件有限公司 | Charge anti-interference method and device |
| CN108700975B (en) * | 2016-09-21 | 2020-07-28 | 华为技术有限公司 | Anti-interference method and device for touch panel |
| WO2018076343A1 (en) * | 2016-10-31 | 2018-05-03 | 深圳市汇顶科技股份有限公司 | Capacitance detection device and method, and pressure detection system |
| CN108121631B (en) * | 2016-11-28 | 2021-06-29 | 北京小米移动软件有限公司 | Screen abnormal state reminding method and device |
| CN106657516B (en) * | 2016-12-09 | 2020-11-24 | 深圳市泽昕通讯有限公司 | Method and system for reproducing and avoiding touch screen interference based on electromagnetic interference environment |
| CN106786948A (en) * | 2016-12-30 | 2017-05-31 | 深圳市金立通信设备有限公司 | A kind of battery charging control method and terminal |
| TWI601967B (en) | 2017-01-09 | 2017-10-11 | Acer Inc | Detecting method and system for touch apparatus |
| CN106845422B (en) * | 2017-01-22 | 2020-12-22 | Oppo广东移动通信有限公司 | Fingerprint identification module, fingerprint identification method and mobile terminal |
| CN106681875B (en) * | 2017-02-17 | 2020-09-01 | 广州视源电子科技股份有限公司 | Method and system for detecting power interference resistance of touch screen |
| WO2018166057A1 (en) * | 2017-03-13 | 2018-09-20 | 华为技术有限公司 | Method and electronic device for outputting touch control signals |
| CN107132949B (en) * | 2017-04-28 | 2020-11-10 | 北京小米移动软件有限公司 | Anti-interference method, device, terminal and storage medium |
| CN107329609A (en) * | 2017-06-26 | 2017-11-07 | 青岛海信移动通信技术股份有限公司 | A kind of method and apparatus for detecting touching signals |
| CN107728847B (en) * | 2017-10-31 | 2020-06-12 | 维沃移动通信有限公司 | Charging interference processing method and mobile terminal |
| CN109755984A (en) * | 2017-11-07 | 2019-05-14 | 北京小米移动软件有限公司 | Apparatus control method and device |
| CN109271124A (en) * | 2018-09-27 | 2019-01-25 | 联想(北京)有限公司 | A kind of processing method and electronic equipment |
| CN112925439A (en) * | 2021-02-04 | 2021-06-08 | 优方科技(东莞)有限公司 | Frequency hopping system and frequency hopping processing method suitable for capacitive touch control |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1197555A (en) * | 1996-07-12 | 1998-10-28 | 辛纳普蒂克斯有限公司 | Object position detector with noise suppression feature |
| CN102629163A (en) * | 2010-12-13 | 2012-08-08 | 三星电子株式会社 | Method for controlling operation of touch panel and portable terminal supporting the same |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8493331B2 (en) * | 2007-06-13 | 2013-07-23 | Apple Inc. | Touch detection using multiple simultaneous frequencies |
| CN102053764B (en) * | 2009-11-10 | 2012-12-19 | 深圳市汇顶科技有限公司 | Anti-interference method and system as well as capacitive touch sensor |
| CN102457091A (en) * | 2010-10-29 | 2012-05-16 | 南京萨特科技发展有限公司 | Anti-interference inductive wireless charger and anti-interference method |
| CN102841715B (en) * | 2012-08-09 | 2016-01-20 | 深圳市汇顶科技股份有限公司 | Capacitive touch screen, touch control terminal and anti-interference method thereof and system |
-
2012
- 2012-08-09 CN CN201210282263.7A patent/CN102841715B/en active Active
-
2013
- 2013-07-10 WO PCT/CN2013/079149 patent/WO2014023147A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1197555A (en) * | 1996-07-12 | 1998-10-28 | 辛纳普蒂克斯有限公司 | Object position detector with noise suppression feature |
| CN102629163A (en) * | 2010-12-13 | 2012-08-08 | 三星电子株式会社 | Method for controlling operation of touch panel and portable terminal supporting the same |
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| WO2014023147A1 (en) | 2014-02-13 |
| CN102841715A (en) | 2012-12-26 |
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