CN104808847A - Anti-interference method and device for detection of touch screen, touch sensor and touch terminal - Google Patents
Anti-interference method and device for detection of touch screen, touch sensor and touch terminal Download PDFInfo
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Abstract
The invention discloses an anti-interference method and a device for detection of a touch screen, a touch sensor and a touch terminal. The method comprises the following steps of judging whether the touch terminal enters a charging state or not; when the touch terminal enters the charging state, detecting whether a touch signal which acts on the touch screen of the touch terminal exists or not; when the touch signal is detected, judging whether the touch area of the touch signal is smaller than a first presetting value or not; when the touch area of the touch signal is smaller than the first presetting value, judging the touch signal as an interference signal, and giving up to process the touch signal. The device comprises a charging state judging unit, a touch signal detection unit and an interference signal filtering unit. The method and the device have the advantages that the problems of slow reaction, point jumping and failure of the touch screen in the charging state are solved, and the interference of electric charging on the detection of the touch screen is eliminated.
Description
Technical field
The embodiment of the present invention relates to touch sensor technologies field, particularly relates to the anti-interference method of a kind of touch-screen detection, device and touch sensor, touch control terminal.
Background technology
Along with the development of touch screen technology; capacitive touch screen is widely used in the portable set such as mobile phone, panel computer; these portable equipments need frequent charging because of limited battery capacity, and the duration of charging is usually more than 1 hour, so user often can use capacitance touch screen while charging.In fact, capacitive touch screen is a capacitance measurement system in essence, wherein, capacitance measurement is mainly measured in the mode sending signal-Received signal strength, so, common-mode noise on charger, is probably transferred to the input end of touch-screen and causes interference to signal, easily occurring the phenomenon of capacitance touch screen detection chip error detection or erroneous judgement when user uses touch-screen.
Charger is a technical barrier of touch screen design to the interference of touch-screen always, especially uses charger of inferior brand, and reaction is slow, hop, malfunctioning situation to be easy to that touch-screen is occurred.Traditional solution charger interference problem is by changing the sweep frequency of touch-screen, and the interference frequency of tripping charger realizes.But on market, charger brand is numerous, and the switching frequency of each charger is different, and compares and be difficult to determine that current charger has how many interference frequencies, therefore be difficult to the interfering frequency avoiding all chargers, therefore cannot effectively realize getting rid of the interference problem of charging to touch-screen.
Summary of the invention
The invention provides the anti-interference method of a kind of touch-screen detection, device and touch sensor, touch control terminal, to realize getting rid of the interference problem of charging to touch-screen detection, solve touch-screen and occur when charged state reacting slow, hop, malfunctioning problem.
First aspect, embodiments provide the anti-interference method that a kind of touch-screen detects, described method comprises the steps:
Judge whether touch control terminal enters charged state;
After judging that touch control terminal enters charged state, detect the touch signal whether existed on the touch-screen acting on described touch control terminal;
When touch signal being detected, judging whether the touch area of described touch signal is less than the first preset value, if so, then described touch signal being judged to be undesired signal and abandoning processing this touch signal.
Further, described first preset value is 20.
Further, described method also comprises:
When the touch area of described touch signal is greater than or equal to the first preset value, described touch signal is judged to be useful signal, and processes this touch signal.
Further, after judging that touch control terminal enters charged state, before whether detection exists touch signal, also comprise:
The Sensitirity va1ue of the touch-screen of described touch control terminal is set to the second preset value, and described second preset value is less than the Sensitirity va1ue of described touch-screen when described touch control terminal is in uncharged state.
Further, described second preset value is 70.
Second aspect, the embodiment of the present invention additionally provides the means for anti-jamming that a kind of touch-screen detects, and described device comprises:
Charged state judging unit, for judging whether touch control terminal enters charged state;
Touch signal detecting unit, for when described touch control terminal enters charged state, detects the touch signal whether existed on the touch-screen acting on described touch control terminal;
Undesired signal filtering unit, for when touch signal being detected, judges whether the touch area of described touch signal is less than the first preset value, if so, then described touch signal is judged to be undesired signal and abandons processing this touch signal.
Further, described first preset value is 20.
Further, described device also comprises:
Useful signal processing unit, for when the touch area of described touch signal is greater than or equal to the first preset value, is judged to be useful signal by described touch signal, and processes this touch signal.
Further, described device also comprises:
Sensitivity setting unit, the Sensitirity va1ue for the touch-screen by described touch control terminal is set to the second preset value, and described second preset value is less than the Sensitirity va1ue of described touch-screen when described touch control terminal is in uncharged state.
Further, described second preset value is 70.
The third aspect, the embodiment of the present invention additionally provides a kind of touch sensor, and described touch sensor comprises touch controller, and described touch controller wraps the means for anti-jamming of the touch-screen detection stated.
Fourth aspect, the embodiment of the present invention additionally provides a kind of touch control terminal, and described touch control terminal comprises above-mentioned touch sensor.
The present invention is by after judging that touch control terminal enters charged state, detect the touch signal whether existed on the touch-screen acting on described touch control terminal, and when touch signal being detected, judge whether the touch area of described touch signal is less than the first preset value, when the touch area of described touch signal is less than the first preset value, described touch signal is judged to be undesired signal and abandons processing this touch signal, solve touch-screen and occur that when charged state reaction is slow, hop, malfunctioning problem, achieve the interference problem effectively got rid of charging and touch-screen is detected.
Accompanying drawing explanation
The process flow diagram of the anti-interference method that a kind of touch-screen that Fig. 1 provides for the embodiment of the present invention one detects;
The process flow diagram of the anti-interference method that a kind of touch-screen that Fig. 2 provides for the embodiment of the present invention two detects;
The structural representation of the means for anti-jamming that a kind of touch-screen that Fig. 3 provides for the embodiment of the present invention three detects;
The structural representation of a kind of touch sensor that Fig. 4 provides for the embodiment of the present invention four;
The structural representation of a kind of touch control terminal that Fig. 5 provides for the embodiment of the present invention five.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.Be understandable that, specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.It also should be noted that, for convenience of description, illustrate only part related to the present invention in accompanying drawing but not entire infrastructure.
Embodiment one
The process flow diagram of the anti-interference method that a kind of touch-screen that Fig. 1 provides for the embodiment of the present invention one detects, the means for anti-jamming that the method can be detected by touch-screen performs, the means for anti-jamming that described touch-screen detects specifically realizes by the form of software or hardware, and general accessible site is in the touch controller of touch sensor, or, be integrated in touch control terminal (touch-control mobile phone, panel computer etc.).The method of the embodiment of the present invention specifically comprises the steps:
Step 110, judge whether touch control terminal enters charged state;
The means for anti-jamming that the touch-screen of main control chip and touch control terminal that this step can pass through touch control terminal detects coordinates realization, after touch control terminal is connected with charger, charger is charged by the battery of power supply to touch control terminal, now the main control chip of touch control terminal can notify that the means for anti-jamming touch control terminal that touch-screen detects enters charge mode, the means for anti-jamming that touch-screen detects is when receiving the notice entering charge mode, judge whether touch control terminal enters charged state, such as can when receiving the notice entering charge mode, detect corresponding interface flag and judge whether touch control terminal enters charged state.When detecting that touch control terminal enters charged state, continue to perform step 120, otherwise, terminate this process, continue other programs performing touch control terminal.Above-mentioned touch control terminal can be the touch-control class mobile terminals such as mobile phone, panel computer, Electronic Paper, digital photo frame.
Step 120, after judging that touch control terminal enters charged state, detect the touch signal that whether exists on the touch-screen acting on described touch control terminal;
After touch control terminal enters charged state, whether real-time detection exists the touch signal on the touch-screen acting on described touch control terminal, described touch signal not only comprises the touch signal that user produces the operation of touch control terminal touch-screen, also comprises the touch signal due to the touch control terminal misidentification caused that charges to touch control terminal.When the touch signal existing and act on the touch-screen of described touch control terminal being detected, continue to perform step 130, otherwise, continue to detect the touch signal whether existed on the touch-screen acting on described touch control terminal.
Step 130, when touch signal being detected, judge whether the touch area of described touch signal is less than the first preset value;
The touch area that user carries out touch operation to touch-screen is general larger, and charging disturbs the touch area of the touch signal caused all very little, occur at random on the touchscreen, therefore can judge whether touch signal is caused by charging interference according to the touch area of touch signal.Concrete, setting the first preset value, when touch signal being detected, judging whether the touch area of described touch signal is less than the first preset value, if so, then continue to perform step 140, otherwise perform step 150.
Step 140, when the touch area of described touch signal is less than the first preset value, described touch signal is judged to be undesired signal and abandons processing this touch signal.
When the touch area of described touch signal is less than the first preset value, described touch signal is judged to be undesired signal and abandons processing this touch signal, refer to not by the coordinate of the touch point of this touch information, pressure, touch the main control chip that area is reported to touch control terminal, the main control chip of such touch control terminal would not think the touch signal having this, also would not make response, thus reach the object of filtering charging interference.
Step 150, when the touch area of described touch signal is greater than or equal to the first preset value, described touch signal is judged to be useful signal, and processes this touch signal.
Touch area is greater than or equal to the touch signal of the first preset value, is judged to be useful signal, is namely judged to be the touch signal that the touch operation of user to touch control terminal touch-screen causes, and processes this touch signal, and make corresponding response.
Concrete, it is 20 that the touch signal caused according to the touch operation of user to touch control terminal touch-screen and charging disturb the feature of the touch signal caused to arrange the first preset value.Due to the touch-screen of different model, numerical value is difference to some extent, those skilled in the art can be arranged according to the scene difference of practical application, it should be noted that, touch area described in the embodiment of the present invention can be the areal calculation according to touch-screen, also can be calculated by the quantity of the pixel of touch-screen, therefore described first preset value be a relative value.
The embodiment of the present invention is by after judging that touch control terminal enters charged state, detect the touch signal whether existed on the touch-screen acting on described touch control terminal, and when touch signal being detected, judge whether the touch area of described touch signal is less than the first preset value, when the touch area of described touch signal is less than the first preset value, described touch signal is judged to be undesired signal and abandons processing this touch signal, thus effectively filtered the touch signal disturbing and cause that charges, solve touch-screen and occur that when charged state reaction is slow, hop, malfunctioning problem, achieve the interference problem effectively got rid of charging and touch-screen is detected.
Embodiment two
The process flow diagram of the anti-interference method that a kind of touch-screen that Fig. 2 provides for the embodiment of the present invention two detects.The present embodiment is the optimization on above-described embodiment one basis, and accordingly, the method for the present embodiment comprises the steps:
Step 210, judge whether touch control terminal enters charged state;
When touch control terminal enters charged state, perform step 220, otherwise terminate this process, continue other programs performing touch control terminal master.
Step 220, after judging that touch control terminal enters charged state, the Sensitirity va1ue of the touch-screen of described touch control terminal is set to the second preset value;
Wherein, described second preset value is less than the Sensitirity va1ue of described touch-screen when described touch control terminal is in uncharged state.The Sensitirity va1ue of touch-screen reflects the be quick on the draw degree of touch-screen to touch signal, and concrete can realize controlling touch-screen to the degree that is quick on the draw of touch signal by the Sensitirity va1ue of the touch-screen in change sensitivity register.Generally, the Sensitirity va1ue of touch-screen is larger, and the be quick on the draw degree of touch-screen to touch signal is sensitiveer.When described touch control terminal is in uncharged state, it is larger that the Sensitirity va1ue of the touch-screen of touch control terminal is generally all arranged, but in this case, charging disturbs the small touch signal caused also just to be easy to be detected, and just likely impacts the use of touch-screen.Therefore, after judging that touch control terminal enters charged state, the Sensitirity va1ue of the touch-screen of described touch control terminal is set to the second preset value, described second preset value is less than the Sensitirity va1ue of described touch-screen when described touch control terminal is in uncharged state, filters out part charging and disturbs the touch signal caused.
Described second preset value can consider the result of use of user when charging, and the anti-interference situation to charging, and described second preset value is preferably set to 70 by the embodiment of the present invention, and described second preset value is a relative value.Due to the touch-screen of different model, numerical value is difference to some extent, and those skilled in the art can be arranged according to the scene difference of practical application.
The touch signal whether step 230, detection exist on the touch-screen acting on described touch control terminal;
When the touch signal existing and act on the touch-screen of described touch control terminal being detected, continue to perform step 240, otherwise, continue to detect the touch signal whether existed on the touch-screen acting on described touch control terminal.
Step 240, when touch signal being detected, judge whether the touch area of described touch signal is less than the first preset value;
When the touch area of described touch signal is less than the first preset value, perform step 250, otherwise perform step 260.
Step 250, when the touch area of described touch signal is less than the first preset value, described touch signal is judged to be undesired signal and abandons processing this touch signal.
Step 260, when the touch area of described touch signal is greater than or equal to the first preset value, described touch signal is judged to be useful signal, and processes this touch signal.
The embodiment of the present invention is by after judging that touch control terminal enters charged state, first the Sensitirity va1ue of the touch-screen of described touch control terminal is set to the second preset value, described second preset value is less than the Sensitirity va1ue of described touch-screen when described touch control terminal is in uncharged state, filter part charging and disturb the touch signal caused, and then by judging whether the touch area of the touch signal detected is less than the first preset value, when the touch area of described touch signal is less than the first preset value, described touch signal is judged to be undesired signal and abandons processing this touch signal, be filtered through the not filtrable charging interference of desensitization value further, solve touch-screen and occur that when charged state reaction is slow, hop, malfunctioning problem, further increase the accuracy to the interference problem that touch-screen detects.
Embodiment three
The structural representation of the means for anti-jamming that a kind of touch-screen that Fig. 3 provides for the embodiment of the present invention three detects.As shown in Figure 3, this device comprises: charged state judging unit 31, touch signal detecting unit 32, undesired signal filtering unit 33.
Wherein, described charged state judging unit 31, for judging whether touch control terminal enters charged state;
Described touch signal detecting unit 32, for when described touch control terminal enters charged state, detects the touch signal whether existed on the touch-screen acting on described touch control terminal;
Described undesired signal filtering unit 33, for when touch signal being detected, judges whether the touch area of described touch signal is less than the first preset value, if so, then described touch signal is judged to be undesired signal and abandons processing this touch signal.
The embodiment of the present invention is by after judging that touch control terminal enters charged state, detect the touch signal whether existed on the touch-screen acting on described touch control terminal, and when touch signal being detected, judge whether the touch area of described touch signal is less than the first preset value, when the touch area of described touch signal is less than the first preset value, described touch signal is judged to be undesired signal and abandons processing this touch signal, thus effectively filtered the touch signal disturbing and cause that charges, solve touch-screen and occur that when charged state reaction is slow, hop, malfunctioning problem, achieve the interference problem effectively got rid of charging and touch-screen is detected.
On the basis of above-described embodiment, described first preset value is 20.
On the basis of above-described embodiment, described device also comprises: useful signal processing unit 34, for when the touch area of described touch signal is greater than or equal to the first preset value, described touch signal is judged to be useful signal, and processes this touch signal.
On the basis of above-described embodiment, described device also comprises:
Sensitivity setting unit 35, for after judging that touch control terminal enters charged state, before whether detection exists touch signal, the Sensitirity va1ue of the touch-screen of described touch control terminal is set to the second preset value, and described second preset value is less than the Sensitirity va1ue of described touch-screen when described touch control terminal is in uncharged state.
On the basis of above-described embodiment, described second preset value is 70.
The means for anti-jamming that the touch-screen that the embodiment of the present invention provides detects can be used for the anti-interference method performing the touch-screen detection that any embodiment of the present invention provides, and possesses corresponding functional module, realizes identical beneficial effect.
Embodiment four
The embodiment of the present invention four also provides a kind of touch sensor.The structural representation of a kind of touch sensor that Fig. 4 provides for the embodiment of the present invention four.See Fig. 4, described touch sensor comprises touch controller 41, can also comprise driving circuit and other devices for supporting touch sensor normally to work.Wherein, described touch controller 41 comprises the means for anti-jamming 42 that the touch-screen described in the various embodiments described above detects.
The touch sensor that the embodiment of the present invention provides, because its touch controller have employed the means for anti-jamming of above-mentioned touch-screen detection, therefore, touch sensor has the beneficial effect of the means for anti-jamming that above-mentioned touch-screen detects equally.
Embodiment five
The embodiment of the present invention five also provides a kind of touch control terminal.The structural representation of a kind of touch control terminal that Fig. 5 provides for the embodiment of the present invention five.See Fig. 5, described touch control terminal comprises touch sensor 51, and wherein, described touch sensor 51 is the touch sensor described in above-described embodiment four.Above-mentioned touch control terminal can be the one in the touch-control class mobile terminals such as touch-control mobile phone, panel computer, Electronic Paper, digital photo frame.
The touch control terminal that the embodiment of the present invention provides, owing to have employed the touch sensor that above-described embodiment five provides, therefore, described touch control terminal has the same beneficial effect of above-mentioned touch sensor equally.
Note, above are only preferred embodiment of the present invention and institute's application technology principle.Skilled person in the art will appreciate that and the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute and can not protection scope of the present invention be departed from.Therefore, although be described in further detail invention has been by above embodiment, the present invention is not limited only to above embodiment, when not departing from the present invention's design, can also comprise other Equivalent embodiments more, and scope of the present invention is determined by appended right.
Claims (12)
1. an anti-interference method for touch-screen detection, it is characterized in that, described method comprises the steps:
Judge whether touch control terminal enters charged state;
After judging that touch control terminal enters charged state, detect the touch signal whether existed on the touch-screen acting on described touch control terminal;
When touch signal being detected, judging whether the touch area of described touch signal is less than the first preset value, if so, then described touch signal being judged to be undesired signal and abandoning processing this touch signal.
2. method according to claim 1, is characterized in that, described first preset value is 20.
3. method according to claim 1, is characterized in that, also comprises:
When the touch area of described touch signal is greater than or equal to the first preset value, described touch signal is judged to be useful signal, and processes this touch signal.
4. method according to claim 1, is characterized in that, after judging that touch control terminal enters charged state, before whether detection exists touch signal, also comprises:
The Sensitirity va1ue of the touch-screen of described touch control terminal is set to the second preset value, and described second preset value is less than the Sensitirity va1ue of described touch-screen when described touch control terminal is in uncharged state.
5. method according to claim 4, is characterized in that, it is characterized in that, described second preset value is 70.
6. a means for anti-jamming for touch-screen detection, it is characterized in that, described device comprises:
Charged state judging unit, for judging whether touch control terminal enters charged state;
Touch signal detecting unit, for when described touch control terminal enters charged state, detects the touch signal whether existed on the touch-screen acting on described touch control terminal;
Undesired signal filtering unit, for when touch signal being detected, judges whether the touch area of described touch signal is less than the first preset value, if so, then described touch signal is judged to be undesired signal and abandons processing this touch signal.
7. device according to claim 6, is characterized in that, described first preset value is 20.
8. device according to claim 6, is characterized in that, also comprises:
Useful signal processing unit, for when the touch area of described touch signal is greater than or equal to the first preset value, is judged to be useful signal by described touch signal, and processes this touch signal.
9. device according to claim 6, is characterized in that, described device also comprises:
Sensitivity setting unit, the Sensitirity va1ue for the touch-screen by described touch control terminal is set to the second preset value, and described second preset value is less than the Sensitirity va1ue of described touch-screen when described touch control terminal is in uncharged state.
10. device according to claim 9, is characterized in that, it is characterized in that, described second preset value is 70.
11. 1 kinds of touch sensors, is characterized in that, comprise touch controller, and described touch controller comprises the means for anti-jamming that the touch-screen according to any one of claim 6-10 detects.
12. 1 kinds of touch control terminals, is characterized in that, comprise touch sensor according to claim 11.
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