CN106484184B - Touch screen and its recognition methods - Google Patents
Touch screen and its recognition methods Download PDFInfo
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- CN106484184B CN106484184B CN201610873733.5A CN201610873733A CN106484184B CN 106484184 B CN106484184 B CN 106484184B CN 201610873733 A CN201610873733 A CN 201610873733A CN 106484184 B CN106484184 B CN 106484184B
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- peak value
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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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04106—Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection
Abstract
The invention discloses a kind of touch screen and its recognition methods, the touch screen includes driving electrodes and induction electrode, and touch action is detected according to the relevant inductive signal of mutual capacitance between driving electrodes and induction electrode, which comprises search for the peak value of inductive signal；Classification is carried out according to the peak value of the inductive signal and obtains peak value type, and the peak value of the inductive signal of the different peak value types is counted respectively, obtains statistical result；And touch type is judged according to the statistical result and the peak value type, the identification to finger touch action and tip of the brushstyle of a writing or painting touch action can be completed in the case where being used only and being started writing.
Description
Technical field
The present invention relates to touch screen field more particularly to a kind of touch screen and its recognition methods.
Background technique
In the prior art, touch screen is in order to realize the identification to finger and felt pen, it is necessary to which the capacitance pen tip of the brushstyle of a writing or painting can be beaten
Pumping signal out passes through the identification finished receiving to finger and felt pen to the pumping signal.This requires used
The capacitance pen tip of the brushstyle of a writing or painting add additional chip, pumping signal is generated with this, this is namely common at present to match with touch control device
Cover the condenser type active pen used.
But active pen needs to realize that the synchronous ability of the touch chip of touch control device is normal by adding additional chip
Work, increases production cost, is unfavorable for popularizing for product.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of touch screen and its recognition methods, it is real for can solve at present
The problem of showing identification of the touch screen to finger and felt pen, the increased costs of extra chips institute band can only be added in stylus.
In order to solve the above-mentioned technical problem, the first aspect of the present invention provides a kind of recognition methods of touch screen, described
Touch screen includes driving electrodes and induction electrode, and according to the relevant sense of mutual capacitance between driving electrodes and induction electrode
Induction signal detects touch action, which comprises searches for the peak value of inductive signal；It is carried out according to the peak value of the inductive signal
Classification obtains peak value type, and counts respectively to the peak value of the inductive signal of the different peak value types, obtains
Statistical result；And touch type is judged according to the statistical result and the peak value type.
Preferably, the detection search includes: the curve for obtaining inductive signal and changing over time；And on the curve
Search for the peak value of inductive signal.
Preferably, the classification includes: the peak value class when the peak value of the inductive signal is more than or equal to first threshold
Type is that finger touches peak value；When the peak value of the inductive signal is less than first threshold and is more than or equal to second threshold, the peak
Value Types are that the tip of the brushstyle of a writing or painting touches peak value, and the first threshold is greater than the second threshold；When the peak value of the inductive signal is less than
When two threshold values, the peak value type is invalid peak value.
Preferably, the judgement further includes false action-proof judgement, and the false action-proof judgement corresponds to, to prevent from malfunctioning
The detection of the confirmatory repeated to the erroneous effects that touch type judges to the peak value of inductive signal is searched for, and is being judged
Cheng Zhong, the statistic of classification result of the peak value of the inductive signal obtained through detection search meet the classification item to touch type always
Part, the false action-proof judges that judging result is effective, conversely, the false action-proof judges that judging result is invalid.
Preferably, when current state is original state, if finger touches, peak value statistical number is zero and the tip of the brushstyle of a writing or painting touches peak value system
It is counted as zero, the current state is no touch state, wherein the original state is no touch state.
Preferably, when the current state is no touch state, if the finger touches peak value statistical number and is greater than zero and institute
It states the tip of the brushstyle of a writing or painting and touches peak value statistical number equal to zero, the false action-proof judgement repetition judges that number is corresponding and is more than or equal to third threshold value,
The false action-proof judge judging result for it is effective when, judge the current state by no touch state be converted to finger touch shape
State, the false action-proof judge judging result for it is invalid when, judge this exercise void, the current state is maintained as oncontacting
State is touched, a movement is judged as that touch operation need to repeat to confirm to the peak value of inductive signal by the third threshold value correspondence
Property detection search minimum number.
Preferably, the current state be finger touch status when, if the finger touch peak value statistical number be equal to zero and
The tip of the brushstyle of a writing or painting touches peak value statistical number and is equal to zero, and the false action-proof judgement repetition judges that number is corresponding and is more than or equal to the 4th threshold
Value, the false action-proof judge judging result for it is effective when, judge that the current state is converted to oncontacting by finger touch status
Touch state, the false action-proof judge judging result for it is invalid when, judge this exercise void, the current state is maintained as
Finger touch status, the 4th threshold value correspondence by one movement be judged as lift operation need to the peak value of inductive signal repeat into
The minimum number of the detection search of row confirmatory.
Preferably, when finger carries out touch operation to the touch screen first, terminate to advance in the finger touch operation
Capable tip of the brushstyle of a writing or painting touch operation is shielded.
Preferably, when the current state remains finger touch status, the finger touches peak value and has been marked as
Effect, the tip of the brushstyle of a writing or painting touch peak value and are marked as in vain.
Preferably, when the current state is no touch state, if the finger touches peak value statistical number and is equal to zero and institute
It states the tip of the brushstyle of a writing or painting and touches peak value statistical number greater than zero, false action-proof judgement repetition judges that number corresponds to and is more than or equal to third threshold value, described
False action-proof judge judging result for it is effective when, judge that the current state is converted to tip of the brushstyle of a writing or painting touch condition by no touch state,
The false action-proof judge judging result for it is invalid when, judge this exercise void, the current state is maintained as no touch
One movement is judged as that touch operation need to repeat confirmatory to the peak value of inductive signal by state, the third threshold value correspondence
Detection search minimum number.
Preferably, the current state be the tip of the brushstyle of a writing or painting touch condition when, if the finger touch peak value statistical number be equal to zero and
The tip of the brushstyle of a writing or painting touches peak value statistical number and is equal to zero, and the false action-proof judgement repetition judges that number is corresponding and is more than or equal to the 4th threshold
Value, the false action-proof judge judging result for it is effective when, judge that the current state is converted to oncontacting by tip of the brushstyle of a writing or painting touch condition
Touch state, the false action-proof judge judging result for it is invalid when, judge this exercise void, the current state is maintained as
Tip of the brushstyle of a writing or painting touch condition, the 4th threshold value correspondence by one movement be judged as lift operation need to the peak value of inductive signal repeat into
The minimum number of the detection search of row confirmatory.
Preferably, when the tip of the brushstyle of a writing or painting carries out touch operation to the touch screen first, before the tip of the brushstyle of a writing or painting touch operation terminates
The finger touch operation of progress is shielded.
Preferably, when the current state is tip of the brushstyle of a writing or painting touch condition, the tip of the brushstyle of a writing or painting touches peak value and is marked as effectively, institute
Finger touch peak value is stated to be marked as in vain.
Preferably, when the current state is no touch state, if the finger touches peak value statistical number and is greater than zero and institute
It states the tip of the brushstyle of a writing or painting and touches peak value statistical number greater than zero, judgment method touches peak value statistical number greater than zero with the finger and the tip of the brushstyle of a writing or painting touches
Peak value statistical number is touched equal to zero Shi Xiangtong.
Preferably, when finger and the tip of the brushstyle of a writing or painting carry out touch operation to the touch screen simultaneously, in the finger touch operation knot
The tip of the brushstyle of a writing or painting touch operation carried out before beam is shielded.
The second aspect of the present invention provides a kind of touch screen, and the touch screen includes: induction module, the induction module
For carrying out detection to inductive signal and being scanned for the peak value for the inductive signal that detection obtains；And identification module,
The identification module judges current state according to the peak value of the inductive signal, wherein the identification module includes: point
Class statistical module, the statistic of classification module are used to carry out the peak value of the inductive signal classification to obtain peak value type, and right
The peak value of different types of inductive signal is counted, and statistical result is obtained；And judgment module, the statistical module is according to institute
It states statistical result and current state is judged as one of finger touch status, tip of the brushstyle of a writing or painting touch condition and no touch state.
It after technical solution of the present invention, does not need that additional chip is installed in felt pen, it is only necessary to a touch
Touch chip in screen can realize identification of the touch screen for finger and felt pen, save production cost, be conducive to produce
Product popularize.
Detailed description of the invention
By referring to the drawings to the description of inventive embodiments, above-mentioned and other purposes of the invention, feature and excellent
Point will be apparent from, in the accompanying drawings:
Fig. 1 shows the flow chart of recognition methods when the original state of first embodiment of the invention offer is no touch state.
Fig. 2 shows the specific flow charts of the first deterministic process in Fig. 1.
Fig. 3 shows the specific flow chart of the second deterministic process in Fig. 1.
Fig. 4 shows the process of recognition methods when the current state of first embodiment of the invention offer is finger touch status
Figure.
Fig. 5 shows the process of recognition methods when the current state of first embodiment of the invention offer is tip of the brushstyle of a writing or painting touch condition
Figure.
Specific embodiment
Below based on embodiment, present invention is described, but the present invention is not restricted to these embodiments.Under
Text is detailed to describe some specific detail sections in the datail description of the embodiment of the present invention, comes to those skilled in the art
Say that the present invention can also be understood completely in the description of part without these details.It is well known in order to avoid obscuring essence of the invention
Method, process, process do not describe in detail.
In various figures, identical element, which is adopted, will be referred to by like reference numbers expression.For the sake of clarity, in attached drawing
Various pieces are not necessarily to scale.In addition, certain well known parts may be not shown in figure.Flow chart, frame in attached drawing
Figure illustrates the system of the embodiment of the present invention, possible System Framework, the function and operation of method, apparatus, the box of attached drawing
And box sequence is used only to the process and step of better illustrated embodiment, without should be in this, as to inventing limit itself
System.In the first embodiment of the present invention, a kind of recognition methods of touch screen is provided, can not needed in felt pen
In the case where adding extra chips, identification of the algorithm completion to finger touch action and tip of the brushstyle of a writing or painting touch action is only relied on.
It is understood that in the present embodiment, by the sensor that is arranged in the touch screen in screen ranges with
The relevant inductive signal of mutual capacitance between driving electrodes and induction electrode is detected, and is thus obtained inductive signal and is become at any time
The curve of change, and the peak value of the curve is scanned on this basis.
After completing the detection search to the peak value of the inductive signal, next according to the classification of the peak value of inductive signal with
Obtain peak value type.
Obtained induction is searched for through detection when due to finger touch status, tip of the brushstyle of a writing or painting touch condition and no touch state to believe
Number peak value difference it is obvious, according to the analytical calculation to experiment the data obtained, we determined that two classification thresholds, respectively the
One threshold value and second threshold, the first threshold are greater than the second threshold.
When the peak value of the inductive signal is more than or equal to first threshold, the peak value type is that finger touches peak value；When
When the peak value of the inductive signal is less than first threshold and is more than or equal to second threshold, the peak value type is that the tip of the brushstyle of a writing or painting touches peak
Value；When the peak value of the inductive signal is less than second threshold, the peak value type is invalid peak value.
Next, judging touch type according to different types of statistical result.
Fig. 1 to Fig. 3 is specifically referred to, the original state that Fig. 1 shows first embodiment of the invention offer is no touch state
When recognition methods flow chart.Fig. 2 shows the specific flow charts of the first deterministic process in Fig. 1.Fig. 3 shows the second judgement in Fig. 1
The specific flow chart of process.
In the first embodiment of the present invention, after the completion of finger touch action/tip of the brushstyle of a writing or painting touch condition, the current state
No touch state first must be converted to by finger touch status/tip of the brushstyle of a writing or painting touch condition, the touch screen could grasp next touch
It is identified, thus, the narration of recognition methods process is carried out using no touch state as original state.
As shown in Figure 1, when the original state is no touch state, touch screen provided by the present embodiment first embodiment
Recognition methods include step S110, S120 and S130.
In step s 110, judge that finger touches whether peak value statistical number is greater than zero, judged if it is, executing first
Journey S120, if it is not, then executing the second deterministic process S130.
Further, as shown in Fig. 2, the first deterministic process S120 includes step S121-S123.
When finger, which touches peak value statistical number, is greater than zero, in step S121, judge whether the tip of the brushstyle of a writing or painting touches peak value statistical number
Greater than zero, if so, S122 is thened follow the steps, if not, thening follow the steps S123.
In step S122, judge false action-proof judge judging result whether be effectively, i.e., to the peak value of inductive signal into
The search of row repeated detection touches peak value statistical number to the finger that multiple statistic of classification obtains and the tip of the brushstyle of a writing or painting touches peak value statistics
Number is confirmed respectively, prevents from malfunctioning the judgement bring erroneous effects to touch type.
During carrying out repeated detection search to the peak value of inductive signal, if repeatedly obtained difference after statistic of classification
Type statistics number meets situation described previously always, that is, meets finger touch peak value statistical number and be greater than zero and tip of the brushstyle of a writing or painting touch peak value system
The class condition greater than zero is counted, the false action-proof judges that judging result is effective, if carrying out in the peak value to inductive signal
In repeated detection search process, at a time, obtained different type statistical number has been unsatisfactory for institute above after statistic of classification
Situation is stated, that is, is unsatisfactory for finger touch peak value statistical number and is greater than zero and class condition of the tip of the brushstyle of a writing or painting touch peak value statistical number greater than zero,
The false action-proof judges that judging result is invalid.
Wherein, the number for repeating the detection search of confirmatory to the peak value of inductive signal is corresponding more than or equal to third threshold
Value, the third threshold value, which corresponds to, is judged as that touch operation need to repeat confirmatory to the peak value of inductive signal for a movement
Detection search minimum number.It should be noted that the third threshold value is more than or equal to 1.
If so, touching peak value for finger in the recognition methods of the touch screen provided by first embodiment of the invention
Statistical number is greater than zero and the tip of the brushstyle of a writing or painting touches peak value statistical number and is greater than zero, i.e. tip of the brushstyle of a writing or painting touch action and finger touch action is simultaneous
Situation, is preferentially judged as finger touch status for current state, and the current state is converted to finger by no touch state and touches
State.
After current state is judged as finger touch status, the finger searched will be detected in the process and touches peak value mark
It is denoted as effectively, is invalid by the tip of the brushstyle of a writing or painting peak markers searched are detected in the process, and according to labeled as the effective hand
Refer to that is, in the process touching peak value progress coordinate calculating only identifies finger touch action, by tip of the brushstyle of a writing or painting touch operation screen
It covers.
If it is not, then this time movement is judged as in vain, current state is maintained as no touch state.
In step S123, judge false action-proof judge judging result whether be effectively, i.e., to the peak value of inductive signal into
The search of row repeated detection touches peak value statistical number to the finger that multiple statistic of classification obtains and the tip of the brushstyle of a writing or painting touches peak value statistics
Number is confirmed respectively, prevents from malfunctioning the judgement bring erroneous effects to touch type.
During carrying out repeated detection search to the peak value of inductive signal, if repeatedly obtained difference after statistic of classification
Type statistics number meets situation described previously always, that is, meets finger touch peak value statistical number and be greater than zero and tip of the brushstyle of a writing or painting touch peak value system
Count be not more than zero class condition, the false action-proof judges that judging result is effective, if the peak value to inductive signal into
In row repeated detection search process, at a time, obtained different type statistical number has been unsatisfactory for above after statistic of classification
The situation is unsatisfactory for finger touch peak value statistical number and is greater than zero and classification item of the tip of the brushstyle of a writing or painting touch peak value statistical number no more than zero
Part, the false action-proof judge that judging result is invalid.
Wherein, the number for repeating the detection search of confirmatory to the peak value of inductive signal is corresponding more than or equal to third threshold
Value, the third threshold value, which corresponds to, is judged as that touch operation need to repeat confirmatory to the peak value of inductive signal for a movement
Detection search minimum number.It should be noted that the third threshold value is more than or equal to 1.
If so, the current state is converted to finger touch status by no touch state.Current state is judged as hand
After referring to touch condition, it is effective for detecting the finger searched in the process and touch peak markers, and according to labeled as effective
The finger touch peak value carry out coordinate calculating.
If it is not, then current state is maintained as no touch state.
Further, as shown in figure 3, the second deterministic process S130 includes step S131-S132.
When finger, which touches peak value statistical number, is not more than zero, in step S131, judge that the tip of the brushstyle of a writing or painting touches peak value statistical number and is
It is no to be greater than zero, if so, S132 is thened follow the steps, if it is not, then current state is maintained as no touch state.
In step S132, judge false action-proof judge judging result whether be effectively, i.e., to the peak value of inductive signal into
The search of row repeated detection touches peak value statistical number to the finger that multiple statistic of classification obtains and the tip of the brushstyle of a writing or painting touches peak value statistics
Number is confirmed respectively, prevents from malfunctioning the judgement bring erroneous effects to touch type.
During carrying out repeated detection search to the peak value of inductive signal, if repeatedly obtained difference after statistic of classification
Type statistics number meets situation described previously always, that is, meets finger touch peak value statistical number no more than zero and the tip of the brushstyle of a writing or painting touches peak value
Statistical number is greater than zero class condition, and the false action-proof judges that judging result is effective, if the peak value to inductive signal into
In row repeated detection search process, at a time, obtained different type statistical number has been unsatisfactory for above after statistic of classification
The situation is unsatisfactory for finger touch peak value statistical number no more than zero and the tip of the brushstyle of a writing or painting touches the classification item that peak value statistical number is greater than zero
Part, the false action-proof judge that judging result is invalid.
Wherein, the number for repeating the detection search of confirmatory to the peak value of inductive signal is corresponding more than or equal to third threshold
Value, the third threshold value, which corresponds to, is judged as that touch operation need to repeat confirmatory to the peak value of inductive signal for a movement
Detection search minimum number.It should be noted that the third threshold value is more than or equal to 1.
If so, the current state is converted to tip of the brushstyle of a writing or painting touch condition by no touch state.Current state is judged as pen
After holding touch condition, it is effective for detecting the tip of the brushstyle of a writing or painting searched in the process and touch peak markers, and according to labeled as effective
The tip of the brushstyle of a writing or painting touch peak value carry out coordinate calculating.
If it is not, then this time movement is judged as in vain, current state is maintained as no touch state.
Fig. 4 shows the process of recognition methods when the current state of first embodiment of the invention offer is finger touch status
Figure.As shown in figure 4, deterministic process thereafter includes step S401- after current state is judged as finger touch status
S403。
In step S401, judge that finger touches whether peak value statistical number is greater than zero.
If so, due in the first embodiment of the present invention, after current state is judged as finger touch status, herein
During secondary finger touch action continues, i.e., during the described finger touch peak value statistical number is persistently remained above zero, i.e.,
The tip of the brushstyle of a writing or painting is set to have carried out touch operation to touch screen, this time tip of the brushstyle of a writing or painting touch operation is also shielded, i.e., the described current state is finger touching
When touching state, during the current state remains continuously finger touch status, it will detect and search in the process
Finger touch peak markers be effective, be invalid by the tip of the brushstyle of a writing or painting peak markers searched are detected in the process, and according to mark
It is denoted as the effective finger and touches peak value progress coordinate calculating, thus preceding state is maintained as finger touch status.
If not, thening follow the steps S402.
In step S402, judge that the tip of the brushstyle of a writing or painting touches whether peak value statistical number is greater than zero.
If so, after the completion of finger touch action, the current state must due in the first embodiment of the present invention
No touch state first must be converted to by finger touch status, the touch screen could identify next touch operation, and
In practical application, touch action is completed in finger and the tip of the brushstyle of a writing or painting starts to certainly exist a time interval between touch action, even if
It is very short every the time, but this time interval is still objective reality, therefore such situation is invalid.
If not, thening follow the steps S403.
In step S403, judge that false action-proof judges whether judging result is effective, i.e., the peak value of inductive signal is carried out
Repeated detection search touches peak value statistical number to the finger that multiple statistic of classification obtains and the tip of the brushstyle of a writing or painting touches peak value statistical number
Confirmed respectively, prevents from malfunctioning the judgement bring erroneous effects to touch type.
During carrying out repeated detection search to the peak value of inductive signal, if repeatedly obtained difference after statistic of classification
Type statistics number meets situation described previously always, that is, meets finger touch peak value statistical number no more than zero and the tip of the brushstyle of a writing or painting touches peak value
Statistical number is not more than zero class condition, and the false action-proof judges that judging result is effective, if in the peak value to inductive signal
It carries out in repeated detection search process, at a time, before obtained different type statistical number has been unsatisfactory for after statistic of classification
The text situation is unsatisfactory for finger touch peak value statistical number no more than zero and the tip of the brushstyle of a writing or painting touches point of the peak value statistical number no more than zero
Class condition, the false action-proof judge that judging result is invalid.
Wherein, the number for repeating the detection search of confirmatory to the peak value of inductive signal is corresponding more than or equal to the 4th threshold
Value, the 4th threshold value, which corresponds to, is judged as a movement confirmatory need to be repeated to the peak value of inductive signal by lifting operation
Detection search minimum number.It should be noted that the 4th threshold value is more than or equal to 1, and the third threshold value and described
4th threshold value is unequal under normal circumstances.
If it is, the current state is converted to no touch state by finger touch status.
If it is not, then current state is maintained as finger touch status.
Fig. 5 shows the process of recognition methods when the current state of first embodiment of the invention offer is tip of the brushstyle of a writing or painting touch condition
Figure.As shown in figure 5, deterministic process thereafter includes step S501- after current state is judged as tip of the brushstyle of a writing or painting touch condition
S503。
In step S501, judge that the tip of the brushstyle of a writing or painting touches whether peak value statistical number is greater than zero.
If so, due in the first embodiment of the present invention, after current state is judged as tip of the brushstyle of a writing or painting touch condition, herein
During secondary tip of the brushstyle of a writing or painting touch action continues, i.e., during the described tip of the brushstyle of a writing or painting touch peak value statistical number is persistently remained above zero, i.e.,
Finger is set to have carried out touch operation to touch screen, this time finger touch operation is also shielded, i.e., the described current state is tip of the brushstyle of a writing or painting touching
When touching state, during the current state remains continuously tip of the brushstyle of a writing or painting touch condition, it will detect and search in the process
The tip of the brushstyle of a writing or painting touch peak markers be effective, be invalid by the finger peak markers searched are detected in the process, and according to mark
It is denoted as the effective tip of the brushstyle of a writing or painting and touches peak value progress coordinate calculating, thus current state is maintained as tip of the brushstyle of a writing or painting touch condition.
If not, thening follow the steps S502.
In step S502, judge that finger touches whether peak value statistical number is greater than zero.
If so, after the completion of tip of the brushstyle of a writing or painting touch action, the current state must due in the first embodiment of the present invention
No touch state first must be converted to by tip of the brushstyle of a writing or painting touch condition, the touch screen could identify next touch operation, and
In practical application, touch action is completed in the tip of the brushstyle of a writing or painting and finger starts to certainly exist a time interval between touch action, even if
It is very short every the time, but this time interval is still objective reality, therefore such situation is invalid.
If not, thening follow the steps S503.
In step S503, judge that false action-proof judges whether judging result is effective, i.e., the peak value of inductive signal is carried out
Repeated detection search touches peak value statistical number to the finger that multiple statistic of classification obtains and the tip of the brushstyle of a writing or painting touches peak value statistical number
Confirmed respectively, prevents from malfunctioning the judgement bring erroneous effects to touch type.
During carrying out repeated detection search to the peak value of inductive signal, if repeatedly obtained difference after statistic of classification
Type statistics number meets situation described previously always, that is, meets finger touch peak value statistical number no more than zero and the tip of the brushstyle of a writing or painting touches peak value
Statistical number is not more than zero class condition, and the false action-proof judges that judging result is effective, if in the peak value to inductive signal
It carries out in repeated detection search process, at a time, before obtained different type statistical number has been unsatisfactory for after statistic of classification
The text situation is unsatisfactory for finger touch peak value statistical number no more than zero and the tip of the brushstyle of a writing or painting touches point of the peak value statistical number no more than zero
Class condition, the false action-proof judge that judging result is invalid.
Wherein, the number for repeating the detection search of confirmatory to the peak value of inductive signal is corresponding more than or equal to the 4th threshold
Value, the 4th threshold value, which corresponds to, is judged as a movement confirmatory need to be repeated to the peak value of inductive signal by lifting operation
Detection search minimum number.It should be noted that the third threshold value is more than or equal to 1, and the third threshold value and described
4th threshold value is unequal under normal circumstances.
If it is, the current state is converted to no touch state by tip of the brushstyle of a writing or painting touch condition.
If it is not, then current state is maintained as tip of the brushstyle of a writing or painting touch condition.
In the second embodiment of the present invention, a kind of touch screen is provided, the touch screen includes two main modulars, point
It is not induction module and identification module.In the touch screen provided by the present embodiment, the identification module passes through the touch screen
The sensor of middle setting carries out the relevant inductive signal of mutual capacitance in screen ranges between driving electrodes and induction electrode
Detection, thus obtains the curve that inductive signal changes over time, and scan on this basis to the peak value of the curve.
The peak value for the inductive signal that the identification module is used to be obtained according to induction module detection search sentences current state
It is disconnected.Specifically, the identification module includes statistic of classification module and judgment module.Wherein, the statistic of classification module is used for
Classification is carried out to the peak value of the inductive signal and obtains peak value type, and the peak value of different types of inductive signal is counted
Number, obtains statistical result；Current state is judged as finger touch status, the tip of the brushstyle of a writing or painting according to the statistical result by the statistical module
One of touch condition and no touch state.The specific recognition methods of identification module please refers to first embodiment of the invention and mentions
The recognition methods of the touch screen of confession is not repeated to describe here.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
It is as described above according to the embodiment of the present invention, these embodiments details all there is no detailed descriptionthe, also not
Limiting the invention is only the specific embodiment.Obviously, as described above, can make many modifications and variations.This explanation
These embodiments are chosen and specifically described to book, is principle and practical application in order to better explain the present invention, thus belonging to making
Technical field technical staff can be used using modification of the invention and on the basis of the present invention well.The present invention is only by right
The limitation of claim and its full scope and equivalent.
Claims (16)
1. a kind of recognition methods of touch screen, the touch screen includes driving electrodes and induction electrode, and according to electric with driving
The relevant inductive signal of mutual capacitance between pole and induction electrode detects touch action, which is characterized in that the described method includes:
Search for the peak value of inductive signal；
Classification, which is carried out, according to the peak value of the inductive signal obtains peak value type, and the sense to the different peak value types
The peak value of induction signal is counted respectively, obtains statistical result；And
Touch type is judged according to the statistical result and the peak value type.
2. recognition methods according to claim 1, which is characterized in that the detection, which is searched for, includes:
Obtain the curve that inductive signal changes over time；And
The peak value of inductive signal is searched on the curve.
3. recognition methods according to claim 1, which is characterized in that the classification includes:
When the peak value of the inductive signal is more than or equal to first threshold, the peak value type is that finger touches peak value；
When the peak value of the inductive signal is less than first threshold and is more than or equal to second threshold, the peak value type is tip of the brushstyle of a writing or painting touching
Peak value is touched, the first threshold is greater than the second threshold；
When the peak value of the inductive signal is less than second threshold, the peak value type is invalid peak value.
4. recognition methods according to claim 1, which is characterized in that the judgement further includes false action-proof judgement, described
False action-proof judgement corresponds to, and repeats to prevent from malfunctioning to the erroneous effects that touch type judges to the peak value of inductive signal
The detection of the confirmatory of progress is searched for, in the judgment process, the statistic of classification of the peak value of the inductive signal obtained through detection search
As a result meet the class condition to touch type always, the false action-proof judge judging result be it is effective, conversely, described anti-error
Movement judges that judging result is invalid.
5. recognition methods according to claim 4, which is characterized in that when current state is original state, if finger touches
Peak value statistical number is zero and tip of the brushstyle of a writing or painting touch peak value statistical number is zero, and the current state is no touch state, wherein described initial
State is no touch state.
6. recognition methods according to claim 5, which is characterized in that when the current state is no touch state, if institute
Finger touch peak value statistical number is stated greater than zero and the tip of the brushstyle of a writing or painting touches peak value statistical number and is equal to zero, the false action-proof judgement repetition
Judge that number is corresponding and be more than or equal to third threshold value, the false action-proof judge judging result for it is effective when, judge the current shape
State is converted to finger touch status by no touch state, the false action-proof judge judging result for it is invalid when, judgement is this time dynamic
It is invalid to make, and the current state is maintained as no touch state, and a movement is judged as touch behaviour by the third threshold value correspondence
Make that the peak value of inductive signal need to be repeated the minimum number that the detection of confirmatory is searched for.
7. recognition methods according to claim 6, which is characterized in that when the current state is finger touch status, if
The finger touches peak value statistical number equal to zero and the tip of the brushstyle of a writing or painting touches peak value statistical number and is equal to zero, the false action-proof judgement weight
Judge that number is corresponding again and be more than or equal to the 4th threshold value, the false action-proof judge judging result for it is effective when, judge it is described currently
State is converted to no touch state by finger touch status, the false action-proof judge judging result for it is invalid when, judgement is this time
Exercise void, the current state are maintained as finger touch status, and a movement is judged as lift by the 4th threshold value correspondence
The minimum number of detection search of confirmatory need to be repeated to the peak value of inductive signal by playing operation.
8. recognition methods according to claim 6, which is characterized in that finger carries out touch operation to the touch screen first
When, the tip of the brushstyle of a writing or painting touch operation carried out before the finger touch operation terminates is shielded.
9. recognition methods according to claim 8, which is characterized in that remain finger touch status in the current state
When, the finger touches peak value and is marked as effectively, and the tip of the brushstyle of a writing or painting touches peak value and is marked as in vain.
10. recognition methods according to claim 5, which is characterized in that when the current state is no touch state, if institute
Finger touch peak value statistical number is stated equal to zero and the tip of the brushstyle of a writing or painting touches peak value statistical number and is greater than zero, false action-proof judgement repetition judgement
Number is corresponding to be more than or equal to third threshold value, the false action-proof judge judging result for it is effective when, judge the current state by
No touch state is converted to tip of the brushstyle of a writing or painting touch condition, the false action-proof judge judging result for it is invalid when, judgement this time movement nothing
Effect, the current state are maintained as no touch state, and a movement is judged as that touch operation needs by the third threshold value correspondence
Repeat the minimum number of the detection search of confirmatory to the peak value of inductive signal.
11. recognition methods according to claim 10, which is characterized in that when the current state is tip of the brushstyle of a writing or painting touch condition,
If the finger touches, peak value statistical number is equal to zero and the tip of the brushstyle of a writing or painting touches peak value statistical number and is equal to zero, the false action-proof judgement
Repetition judge that number is corresponding more than or equal to the 4th threshold value, the false action-proof judge judging result for it is effective when, work as described in judgement
Preceding state is converted to no touch state by tip of the brushstyle of a writing or painting touch condition, the false action-proof judge judging result for it is invalid when, judge this
Secondary exercise void, the current state are maintained as tip of the brushstyle of a writing or painting touch condition, and a movement is judged as by the 4th threshold value correspondence
The minimum number of detection search of confirmatory need to be repeated to the peak value of inductive signal by lifting operation.
12. recognition methods according to claim 10, which is characterized in that the tip of the brushstyle of a writing or painting carries out touch behaviour to the touch screen first
When making, the finger touch operation carried out before the tip of the brushstyle of a writing or painting touch operation terminates is shielded.
13. recognition methods according to claim 12, which is characterized in that the current state be tip of the brushstyle of a writing or painting touch condition
When, the tip of the brushstyle of a writing or painting touches peak value and is marked as effectively, and the finger touches peak value and is marked as in vain.
14. recognition methods according to claim 5, which is characterized in that when the current state is no touch state, if institute
Finger touch peak value statistical number is stated greater than zero and tip of the brushstyle of a writing or painting touch peak value statistical number is greater than zero, judgment method and finger touching
Peak value statistical number is touched greater than zero and the tip of the brushstyle of a writing or painting touches peak value statistical number and is equal to zero Shi Xiangtong.
15. recognition methods according to claim 14, which is characterized in that finger and the tip of the brushstyle of a writing or painting simultaneously carry out the touch screen
When touch operation, the tip of the brushstyle of a writing or painting touch operation carried out before the finger touch operation terminates is shielded.
16. a kind of touch screen characterized by comprising
Induction module, the induction module are used to carry out inductive signal detection and to the peak for detecting the obtained inductive signal
Value scans for；And
Identification module, the identification module judge current state according to the peak value of the inductive signal, wherein
The identification module includes:
Statistic of classification module, the statistic of classification module are used to carry out the peak value of the inductive signal classification to obtain peak value class
Type, and the peak value of different types of inductive signal is counted, obtain statistical result；And
Current state is judged as that finger touch status, the tip of the brushstyle of a writing or painting touch according to the statistical result by judgment module, the statistical module
Touch one of state and no touch state.
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| KR102206051B1 (en) * | 2019-01-22 | 2021-01-21 | 주식회사 하이딥 | Touch apparatus and touch detection method thereof |
| CN111679759B (en) * | 2020-06-16 | 2023-05-23 | 合肥玉卓光电科技有限公司 | Contact identification method, device, computer equipment and storage medium |
| CN113342194B (en) * | 2021-08-03 | 2021-10-22 | 江苏小牛电子科技有限公司 | Automatic recognition writing and erasing method and system for teaching and storage medium |
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