CN106301325A - The touch identification method of capacitance type touch key and device - Google Patents
The touch identification method of capacitance type touch key and device Download PDFInfo
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- CN106301325A CN106301325A CN201610662517.6A CN201610662517A CN106301325A CN 106301325 A CN106301325 A CN 106301325A CN 201610662517 A CN201610662517 A CN 201610662517A CN 106301325 A CN106301325 A CN 106301325A
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- 230000000052 comparative effect Effects 0.000 claims abstract description 28
- 238000001514 detection method Methods 0.000 claims abstract description 11
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- 239000000284 extract Substances 0.000 claims description 2
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- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 2
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
- H03K17/962—Capacitive touch switches
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Abstract
The disclosure discloses touch identification method and the device of a kind of capacitance type touch key.Described method includes: the electrical quantity of detection capacitance type touch key, change according to described electrical quantity determines generation touch and the first adjacent capacitance type touch key and the second capacitance type touch key, obtain the first electrical quantity variable quantity of described first capacitance type touch key and the second electrical quantity variable quantity of described second capacitance type touch key, described first electrical quantity variable quantity and described second electrical quantity variable quantity are compared with default pressing marginal value respectively, obtain comparative result, with default threshold value as reference, according to described comparative result, described first electrical quantity variable quantity and described second electrical quantity variable quantity are processed, thus identify the capacitance type touch key carrying out touch-responsive.The touch identification method of above-mentioned capacitance type touch key and device can identify the touch operation of capacitance type touch key accurately.
Description
Technical field
It relates to Electric signal processing field, particularly to touch identification method and the dress of a kind of capacitance type touch key
Put.
Background technology
Due to attractive in appearance, easy to operate, capacitance type touch key is applied in electronic product more and more.Capacitive touch
The lower section touching button is equiped with sensing spring.When certain capacitance type touch key generation touch operation, sensing bullet below
Spring is pressed, and then makes the electrical quantity of this capacitance type touch key change.Thus by detection capacitance type touch key
Electrical quantity changes, and carries out the touch recognition of capacitance type touch key.
At present, the touch identification method of capacitance type touch key is the electrical quantity change judging single capacitance type touch key
Whether amount reaches default pressing marginal value, thus judges whether to respond this capacitance type touch key.
But, when the region of touch operation be in the marginal area of certain capacitance type touch key, touch scope covers
When adjacent capacitance type touch key or the situation such as the dynamics of touch is bigger, it is possible to this capacitance type touch key and phase can be made
The electrical quantity variable quantity of adjacent capacitance type touch key all reaches default pressing marginal value and responds mistake, thus cause cannot
Identify the touch operation of capacitance type touch key accurately.
Summary of the invention
In order to solve cannot identify exactly present in correlation technique the technology of the touch operation of capacitance type touch key
Problem, present disclose provides touch identification method and the device of a kind of capacitance type touch key.
A kind of touch identification method of capacitance type touch key, including:
The electrical quantity of detection capacitance type touch key, determines according to the change of described electrical quantity and occurs to touch and adjacent the
One capacitance type touch key and the second capacitance type touch key；
Obtain the first electrical quantity variable quantity of described first capacitance type touch key and described second capacitance type touch key
The second electrical quantity variable quantity；
Described first electrical quantity variable quantity and described second electrical quantity variable quantity are entered with default pressing marginal value respectively
Row compares, and obtains comparative result；
With default threshold value as reference, according to described comparative result to described first electrical quantity variable quantity and described second electricity
Parameters variation amount processes, and identifies and carry out from described first capacitance type touch key and described second capacitance type touch key
The capacitance type touch key of touch-responsive.
A kind of touch recognition device of capacitance type touch key, including:
Touch detection module, for detecting the electrical quantity of capacitance type touch key, determined by the change of described electrical quantity
There is touch and the first adjacent capacitance type touch key and the second capacitance type touch key；
Variable quantity acquisition module, for obtaining the first electrical quantity variable quantity of described first capacitance type touch key and described
Second electrical quantity variable quantity of the second capacitance type touch key；
Comparison module, for by described first electrical quantity variable quantity and described second electrical quantity variable quantity respectively with default
Pressing marginal value compares, and obtains comparative result；
Identification module, for default threshold value as reference, according to described comparative result to described first electrical quantity change
Amount and described second electrical quantity variable quantity process, from described first capacitance type touch key and described second capacitance touch
Button identifies the capacitance type touch key carrying out touch-responsive.
Embodiment of the disclosure that the technical scheme of offer can include following beneficial effect:
When the touch operation of capacitance type touch key is identified, changed really by the electrical quantity of capacitance type touch key
Determine touch and the first adjacent capacitance type touch key and the second capacitance type touch key, obtain the first capacitance touch and press
First electrical quantity variable quantity of key and the second electrical quantity variable quantity of the second capacitance type touch key, by the first electrical quantity variable quantity
Compare with default pressing marginal value respectively with the second electrical quantity variable quantity, obtain comparative result, with default threshold value be
Reference, processes, from the first capacitive touch the first electrical quantity variable quantity and the second electrical quantity variable quantity according to comparative result
Touch and button and the second capacitance type touch key identify the capacitance type touch key carrying out touch-responsive.Thus it is critical according to pressing
Value and the threshold value preset, process the electrical quantity variable quantity of two adjacent capacitance type touch keys, identify condenser type
The touch operation of touch key-press, it is to avoid occur that the electrical quantity of maloperation or adjacent capacitor formula touch key-press is all higher than pressing marginal value
Identify the phenomenon of mistake etc. situation, improve the accuracy of touch recognition.
It should be appreciated that it is only exemplary that above general description and details hereinafter describe, can not be limited this
Open.
Accompanying drawing explanation
Accompanying drawing herein is merged in description and constitutes the part of this specification, it is shown that meet the enforcement of the present invention
Example, and in description together for explaining the principle of the present invention.
Fig. 1 is the flow process of the touch identification method according to a kind of capacitance type touch key shown in an exemplary embodiment
Figure；
Fig. 2 is the schematic diagram according to a kind of capacitance type touch key internal structure shown in an exemplary embodiment；
Fig. 3 is the structural representation according to a kind of capacitance type touch key shown in an exemplary embodiment；
Fig. 4 be Fig. 1 correspondence embodiment with default threshold value as reference, according to comparative result to the first electrical quantity variable quantity
Process with the second electrical quantity variable quantity, identify from the first capacitance type touch key and the second capacitance type touch key and carry out
The flow chart of the capacitance type touch key step of touch-responsive；
Fig. 5 be Fig. 1 correspondence embodiment with default threshold value as reference, according to comparative result, the first electrical quantity is changed
Amount and the second electrical quantity variable quantity process, identify from the first capacitance type touch key and the second capacitance type touch key into
The flow chart of the capacitance type touch key step of row touch-responsive；
Fig. 6 is the block diagram of the touch recognition device according to a kind of capacitance type touch key shown in an exemplary embodiment；
Fig. 7 is the block diagram of the identification module shown in Fig. 6 correspondence embodiment；
Fig. 8 is the block diagram that the touch shown in Fig. 7 correspondence embodiment judges submodule；
Fig. 9 is the block diagram of the identification module shown in Fig. 6 correspondence embodiment；
Figure 10 is the block diagram of the capacitance type touch key identification submodule shown in Fig. 9 correspondence embodiment.
Detailed description of the invention
Here in detail exemplary embodiment will be performed explanation, its example represents in the accompanying drawings.Explained below relates to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represents same or analogous key element.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the present invention.On the contrary, they are only with the most appended
The example of the apparatus and method that some aspects that described in detail in claims, the present invention are consistent.
Fig. 1 is the flow process of the touch identification method according to a kind of capacitance type touch key shown in an exemplary embodiment
Figure.As it is shown in figure 1, the touch identification method of this capacitance type touch key may comprise steps of.
In step s 110, the electrical quantity of detection capacitance type touch key, determine according to the change of electrical quantity and touch
And the first adjacent capacitance type touch key and the second capacitance type touch key.
Being usually provided with capacitance type touch key in the terminal unit such as medical display, touch control display, user is by right
The touch operation of capacitance type touch key, carries out the input of information.
Concrete, Fig. 2 is the signal according to a kind of capacitance type touch key internal structure shown in an exemplary embodiment
Figure.As in figure 2 it is shown, capacitance type touch key 1 and internal being equiped with respectively of capacitance type touch key 2 sense spring 1 and sensing bullet
Spring 2.When the capacitance type touch key 1 region part in panel A is touched, sensing spring 1 below is pressed, and makes electric capacity
The electrical quantity of formula touch key-press 1 changes.Thus by detecting the change of electrical quantity, identify the capacitance touch occurring to touch
Button.Electrical quantity can be the capacitance parameter of capacitance type touch key, it is also possible to be that the dielectric near capacitance type touch key is normal
Number, it is also possible to be other electrical quantity.
For single capacitance type touch key, when the region of touch operation is in the marginal zone of certain capacitance type touch key
Territory, touch scope cover the dynamics of adjacent capacitance type touch key or touch bigger time, this capacitance type touch key with
And capacitance type touch key adjacent thereto, i.e. the first capacitance type touch key and the second adjacent capacitance type touch key
Electrical quantity all changes.
Concrete, Fig. 3 is according to the knot of touch area in a kind of capacitance type touch key shown in an exemplary embodiment
Structure schematic diagram.As it is shown on figure 3, the touch area of capacitance type touch key includes region A and is stretched out the district formed by region A
Territory B.When occurring the region touched to be in the region B of capacitance type touch key 1 near the part of capacitance type touch key 2,
The electrical quantity of capacitance type touch key 1 and capacitance type touch key 2 all can change；Electric capacity is included when there is the region touched
Near the part of capacitance type touch key 2 in the region A and region B of formula touch key-press 1, and touch capacitance type touch key 2
Region B time, the electrical quantity of capacitance type touch key 1 and capacitance type touch key 2 the most all can change；At touch operation
In the region A and region B of capacitance type touch key 1, but when the dynamics of touch operation is bigger, capacitance type touch key 1 and electric capacity
The electrical quantity of formula touch key-press 2 the most all can change.It is also possible that other touch operation mode makes the first capacitance touch
The electrical quantity of button and the second adjacent capacitance type touch key all changes.
Based on this, the detection of capacitance type touch key electrical quantity will be carried out, and then determine there occurs that electrical quantity changes two
Individual adjacent capacitor formula touch key-press, the i.e. first capacitance type touch key and the second capacitance type touch key.
In the step s 120, the first electrical quantity variable quantity and second capacitance touch of the first capacitance type touch key are obtained
Second electrical quantity variable quantity of button.
When there is not touch operation, the initial electrical quantity of capacitance type touch key detected.The first capacitive touch detected
Touch after the electrical quantity of button and the second capacitance type touch key changes, in conjunction with initial electrical quantity, get the first condenser type
The electrical quantity variable quantity of touch key-press and the second capacitance type touch key, and the electrical quantity of the first capacitance type touch key is changed
The electrical quantity variable quantity of the second capacitance type touch key, as the first electrical quantity variable quantity, is changed by amount as the second electrical quantity
Amount.
In step s 130, by critical with default pressing respectively to the first electrical quantity variable quantity and the second electrical quantity variable quantity
Value compares, and obtains comparative result.
Pressing marginal value is default electrical quantity variable quantity marginal value, characterizes capacitance type touch key and the basic of touch occurs
Marginal value.If the electrical quantity variable quantity of capacitance type touch key is less than pressing marginal value, illustrate that the region occurring to touch is not at
The touch area of this capacitance type touch key, or the dynamics of touch operation is inadequate, and the probability of false touch is bigger.
Such as, the touch area of capacitance type touch key 1 includes region A and the region B formed that stretched out by region A,
Pressing marginal value is 100, when electrical quantity variable quantity capacitance type touch key 1 being detected is 50, then shows touch
Region is not at the touch area of capacitance type touch key 1, or occurs the region touched to be in the district of capacitance type touch key 1
Territory A or region B, but dynamics is the least, it is likely to false touch.
In step S140, with default threshold value as reference, according to comparative result to the first electrical quantity variable quantity and second
Electrical quantity variable quantity processes, and identifies to carry out touching and ring from the first capacitance type touch key and the second capacitance type touch key
The capacitance type touch key answered.
Threshold value is the electrical parameter values pre-set, and its corresponding concrete numerical value will touch according in capacitance type touch key
Arranging of region determines.
The first electrical quantity variable quantity and the second electrical quantity variable quantity at least one more than or equal to pressing marginal value time, root
According to default threshold value, the first electrical quantity variable quantity and the second electrical quantity variable quantity are further processed, thus identify into
The capacitance type touch key of row touch-responsive.
By method as above, when capacitance type touch key is carried out touch operation, the electricity of detection capacitance type touch key
Parameter, when two adjacent capacitance type touch keys, the first capacitance type touch key the most as above and the second capacitive touch
Touch the electrical quantity of button when changing, according to default pressing marginal value and threshold value, to adjacent two electric capacity of touching occur
The electrical quantity variable quantity of formula touch key-press processes, thus identifies the capacitance type touch key carrying out touch-responsive, it is to avoid
Situation about cannot accurately respond when adjacent two capacitance type touch keys occur to touch, improves capacitance type touch key
The accuracy that touch operation is identified.
Fig. 4 is the description according to the details to step S140 shown in an exemplary embodiment.In step S140, condenser type
The touch-responsive areas of touch key-press is intended response region, and default threshold value is that centre position presses limit value, this step S140
May comprise steps of.
In step s 141, if comparative result indicate the first electrical quantity variable quantity and the second electrical quantity variable quantity be all higher than by
Pressure marginal value, then obtain the relative difference between the first electrical quantity variable quantity and the second electrical quantity variable quantity.
Intended response region is in the mid portion of capacitance type touch key, and only intended response region touches, right
The capacitance type touch key answered is only possible to respond.Being extended, by intended response region, the epi region formed is false touch region.
When capacitance type touch key is carried out touch operation, during owing to occurring the region touched relatively big or touching generation skew, except
Touch intended response region, it is also possible to touch the false touch region of capacitance type touch key extension, even touch adjacent
Capacitance type touch key.Therefore, need to judge there is the region touched, thus identify carry out the capacitance touch that responds by
Key.
When the first electrical quantity variable quantity and the second electrical quantity variable quantity are all higher than pressing marginal value, show the first of correspondence
Capacitance type touch key and the second capacitance type touch key receive touch, now need the first electrical quantity variable quantity and the second electricity
Parameters variation amount is further processed, and carries out to determine in the first capacitance type touch key and the second capacitance type touch key
The capacitance type touch key of touch-responsive.
Relative difference is the first electrical quantity variable quantity and the relative size of the second electrical quantity variable quantity, and the i.e. first electrical quantity becomes
Absolute value corresponding to difference between change amount and the second electrical quantity variable quantity.
Such as, the first electrical quantity variable quantity is 110, and the second electrical quantity variable quantity is 130, and pressing marginal value is 100.First
Electrical quantity variable quantity and the second electrical quantity variable quantity are all higher than pressing marginal value, then the relative difference obtaining them is 20.
When the first electrical quantity variable quantity and the second electrical quantity variable quantity are respectively less than or equal to when pressing marginal value, show to occur
The region touched is in the first capacitance type touch key or the false touch region of the second capacitance type touch key of correspondence, or touches
The dynamics of operation is big not, is that the probability of false touch is high, and therefore the first capacitance type touch key and the second capacitance touch are pressed
Key does not the most carry out touch-responsive.
When the first electrical quantity variable quantity and the second electrical quantity variable quantity only have one more than pressing marginal value time, then show big
Touch in the expection touch area of the capacitance type touch key corresponding to electrical quantity variable quantity of pressing marginal value, therefore identify
This capacitance type touch key is the capacitance type touch key carrying out responding.
Such as, the first electrical quantity variable quantity of capacitance type touch key 1 is 110, the second electricity ginseng of capacitance type touch key 2
Number variable quantity is 80, and pressing marginal value is 100.Only first electrical quantity variable quantity more than pressing marginal value, then judges that expection rings
Answer region that the only capacitance type touch key 1 touched occurs, identify that capacitance type touch key 1 is the capacitance touch carrying out responding
Button.
In step S142, press limit value to intended response region and/or false touch district according to relative difference and centre position
The touch that territory occurs is identified, it is judged that the intended response region of the first capacitance type touch key or the second capacitance type touch key
Whether touch, if it has, then perform step S143, if it has not, then perform step S144.
Centre position pressing limit value is the electrical quantity variable quantity numerical value pre-set, and the region characterizing touch operation is in pre-
Phase response region and the border in false touch region.Centre position pressing limit value is used for identifying adjacent capacitor formula touch key-press, i.e. first
The touch that centre position between capacitance type touch key and the second capacitance type touch key is occurred, this centre position occurs
Touch is considered mistaken touch.Therefore, this will be identified, to avoid this touch is responded by centre position pressing limit value.
Limit value is pressed according to the first electrical quantity variable quantity and the relative difference of the second electrical quantity variable quantity and centre position
Numerical values recited, identify occur touch region be the intended response region including capacitance type touch key.
When the relative difference of the first electrical quantity variable quantity and the second electrical quantity variable quantity presses limit value, table less than centre position
The bright false touch region occurring the region touched to be between the first capacitance type touch key and the second capacitance type touch key, two
The intended response region of capacitance type touch key all touches；When the first electrical quantity variable quantity and the second electrical quantity variable quantity
Relative difference more than or equal to centre position press limit value, show occur touch region be in one of them capacitance touch
The intended response region of button, thus can determine whether that the touch currently occurred is the touch operation of the actual triggering of user, Jin Erxu
This is accurately responded.
In step S143, by electrical quantity variable quantity institute maximum in the first electrical quantity variable quantity and the second electrical quantity variable quantity
Corresponding capacitance type touch key is identified as carrying out the capacitance type touch key of touch-responsive.
After judging the intended response region that the region occurring to touch is in one of them capacitance type touch key, it is right to need
First electrical quantity variable quantity and the second electrical quantity variable quantity compare, and determine the electric capacity that electrical quantity variable quantity that numerical value is big is corresponding
Formula touch key-press is the capacitance type touch key carrying out touch-responsive.
Such as, the first electrical quantity variable quantity is 110, and the second electrical quantity variable quantity is 130, and pressing marginal value is 100, middle
Position pressing limit value is 15.First electrical quantity variable quantity and the second electrical quantity variable quantity are all higher than pressing marginal value, obtain them
Relative difference be 20.Relative difference presses limit value more than centre position, it is determined that the second electrical quantity variable quantity pair that numerical value is big
The second capacitance type touch key answered is the capacitance type touch key carrying out touch-responsive.
In step S144, it is judged that occur the region touched to be in the first capacitance type touch key and the second capacitance touch
False touch region between button.
By method as above, according to default centre position pressing limit value, it is in phase when there is the region touched
During false touch region between two adjacent capacitance type touch keys, touch operation is not responded, the district touched only occurs
Touch-responsive is just carried out, it is to avoid the multiple capacitance touch of appearance is pressed when territory includes the intended response region of capacitance type touch key
The electrical quantity variable quantity of key is all higher than cannot accurately identifying when pressing marginal value the situation of touch operation, improves capacitive touch
Touch the accuracy of the touch operation identification of button.
Fig. 5 is the description according to the details to step S140 shown in an exemplary embodiment.In step S140, condenser type
The touch-responsive areas of touch key-press is intended response region, and default threshold value is for touching skew limit value, and this step S140 is permissible
Comprise the following steps.
In step S145, if comparative result indicates only one in the first electrical quantity variable quantity and the second electrical quantity variable quantity
Numerical value less than pressing marginal value, then with touch skew limit value as reference, becomes according to the first electrical quantity variable quantity and the second electrical quantity
Less than the electrical quantity variable quantity of pressing marginal value in change amount, identify the first capacitance type touch key and the second capacitance type touch key
There is the capacitance type touch key touched in middle intended response region.
Intended response region is in the mid portion of capacitance type touch key, intended response region extend the extension formed
Region is false touch region.
When the intended response region of capacitance type touch key is carried out touch operation, due to operation skew, make capacitive touch
The false touch region touching button also touches.During touch operation skew, the electrical quantity of adjacent capacitance type touch key also occurs
Certain change.Therefore, according to the electrical quantity variable quantity of adjacent two capacitance type touch keys when occurring to touch, with reference to touching partially
Move limit value, and then judge whether touch operation produces skew, prevent from still entering during the false touch region touching capacitance type touch key
Row touch-responsive, improves the accuracy of touch recognition.
Touching skew limit value sign occurs the region touched to be in capacitance type touch key intended response region and false touch district
Time on the border in territory, the electrical quantity variable quantity of the capacitance type touch key adjacent with this capacitance type touch key.
Such as, when occurring to touch, the first electrical quantity variable quantity that the first capacitance type touch key is corresponding is 110, the second electricity
The second electrical quantity variable quantity that appearance formula touch key-press is corresponding is 70, and pressing marginal value is 100, and touching skew limit value is 70.Now
The region touched is occurred to be on the intended response region of the first capacitance type touch key and the border in false touch region.
It is less than pressing marginal value when the first electrical quantity variable quantity and the second electrical quantity variable quantity only have a numerical value, shows
The capacitance type touch key that electrical quantity variable quantity is big touches, but cannot determine whether the region occurring to touch is this condenser type
The intended response region of touch key-press.Therefore, also need the first electrical quantity variable quantity and the second electrical quantity variable quantity are entered one
The process of step, it is judged that whether touch operation offsets.
According to the electrical quantity variable quantity being less than pressing marginal value in the first electrical quantity variable quantity and the second electrical quantity variable quantity
With the size touching skew limit value, it is judged that occur whether the region touched is displaced to the false touch region of capacitance type touch key, enter
And identify that intended response region occurs the capacitance type touch key touched.
When little less than the electrical quantity variable quantity of pressing marginal value in the first electrical quantity variable quantity and the second electrical quantity variable quantity
In time touching skew limit value, showing that touch operation does not produces skew, it is the electric capacity that electrical quantity variable quantity is big that the region touched occurs
The intended response region of formula touch key-press.
When big less than the electrical quantity variable quantity of pressing marginal value in the first electrical quantity variable quantity and the second electrical quantity variable quantity
In or equal to touch skew limit value time, now show touch operation produce skew, occur touch region be displaced to electrical quantity become
The false touch region of the capacitance type touch key that change amount is big.
During touch operation, if the first electrical quantity variable quantity and the second electrical quantity variable quantity are all not less than pressing marginal value,
Show that the region overlay occurring to touch is to the first corresponding capacitance type touch key and the Petting Area of the second capacitance type touch key
Territory.Therefore, there is the situation of touch in the intended response region being not belonging to only certain capacitance type touch key.
When the first electrical quantity variable quantity and the second electrical quantity variable quantity are respectively less than pressing marginal value, show touch
Region is in the first capacitance type touch key or the false touch region of the second capacitance type touch key of correspondence, or touch operation
Dynamics is big not, is that the probability of false touch is high, and the intended response region being therefore not belonging to only capacitance type touch key occurs
Situation about touching.
In step S146, intended response region in the first capacitance type touch key and the second capacitance type touch key is sent out
The raw capacitance type touch key touched is identified as carrying out the capacitance type touch key of touch-responsive.
By method as above, when carrying out the identification of touch operation, the region touched is occurred only to be in electric capacity
During the intended response region of formula touch key-press, just this capacitance type touch key is identified response, with reference to touching skew limit value,
Judge whether touch operation offsets, thus identify the capacitance type touch key ability that only intended response region occurs to touch
Respond, improve the accuracy that the touch operation to capacitance type touch key is identified.
Following for disclosure device embodiment, may be used for performing the touch identification method of this above-mentioned capacitance type touch key
Embodiment.For the details not disclosed in disclosure device embodiment, the touch that refer to disclosure capacitance type touch key is known
Other embodiment of the method.
Fig. 6 is the block diagram of the touch recognition device according to a kind of capacitance type touch key shown in an exemplary embodiment,
As shown in Figure 6, the touch recognition device of this capacitance type touch key includes but not limited to: touch detection module 110, variable quantity obtains
Delivery block 120, comparison module 130 and identification module 140.
Touch detection module 110, for detecting the electrical quantity of capacitance type touch key, determined by the change of electrical quantity and send out
Give birth to touch and the first adjacent capacitance type touch key and the second capacitance type touch key；
Variable quantity acquisition module 120, for obtaining the first electrical quantity variable quantity and second of the first capacitance type touch key
Second electrical quantity variable quantity of capacitance type touch key；
Comparison module 130, for by the first electrical quantity variable quantity and the second electrical quantity variable quantity respectively with default pressing
Marginal value compares, and obtains comparative result；
Identification module 140, for default threshold value as reference, according to comparative result to the first electrical quantity variable quantity and the
Two electrical quantity variable quantities process, and identify and touch from the first capacitance type touch key and the second capacitance type touch key
The capacitance type touch key of response.
Optionally, as it is shown in fig. 7, identification module 140 includes but not limited to: relative difference obtains submodule 141, expection rings
Region recognition submodule 142 and response is answered to identify submodule 143.
Relative difference obtains submodule 141, if indicating the first electrical quantity variable quantity and the second electrical quantity for comparative result
Variable quantity is all higher than pressing marginal value, then obtain the relative mistake between the first electrical quantity variable quantity and the second electrical quantity variable quantity
Value；
Touch and judge submodule 142, for according to relative difference and centre position press limit value to intended response region with/
Or the touch that false touch region occurs is identified, it is judged that the first capacitance type touch key or the expection of the second capacitance type touch key
Whether response region touches；
Response identifies submodule 143, for by electricity ginseng maximum in the first electrical quantity variable quantity and the second electrical quantity variable quantity
Number capacitance type touch key corresponding to variable quantity is identified as carrying out the capacitance type touch key of touch-responsive.
Optionally, as shown in Figure 8, touch judges that submodule 142 includes but not limited to: judging unit 1421 and intended response
Region identification block 1422.
Judging unit 1421, is used for judging whether relative difference presses limit value less than centre position；
Touch recognition unit 1422, for if it has not, then the first capacitance type touch key or the second capacitance type touch key
Intended response region touch.
Optionally, as it is shown in figure 9, identification module 140 includes but not limited to: capacitance type touch key identification submodule 145
With in response to determining that submodule 146.
Capacitance type touch key identification submodule 145, if indicating the first electrical quantity variable quantity and second for comparative result
In electrical quantity variable quantity, only one numerical value is less than pressing marginal value, then with touch skew limit value as reference, according to the first electrical quantity
Less than the electrical quantity variable quantity of pressing marginal value in variable quantity and the second electrical quantity variable quantity, identify the first capacitance type touch key
With the capacitance type touch key that intended response region in the second capacitance type touch key occurs touch；
In response to determining that submodule 146, for will the first capacitance type touch key and the second capacitance type touch key be expected
Response region occurs the capacitance type touch key touched to be identified as carrying out the capacitance type touch key of touch-responsive.
Optionally, as shown in Figure 10, capacitance type touch key identification submodule 145 includes but not limited to: variable quantity extracts
Cell block 1451 and skew limit judging unit 1452.
Variable quantity extraction unit 1451, for extracting less than pressing from the first electrical quantity variable quantity and the second electrical quantity variable quantity
The electrical quantity variable quantity of pressure marginal value；
Capacitance type touch key recognition unit 1452, is used for judging whether electrical quantity variable quantity offsets limit value less than touching,
If it has, then identify that in the first capacitance type touch key and the second capacitance type touch key, intended response region occurs the electricity touched
Appearance formula touch key-press.
It should be appreciated that the invention is not limited in precision architecture described above and illustrated in the accompanying drawings, and
And various modifications and changes can performed without departing from the scope.The scope of the present invention is only limited by appended claim.
Claims (10)
1. a touch identification method for capacitance type touch key, including:
The electrical quantity of detection capacitance type touch key, determines according to the change of described electrical quantity and occurs to touch and the adjacent first electricity
Appearance formula touch key-press and the second capacitance type touch key；
Obtain the first electrical quantity variable quantity of described first capacitance type touch key and the of described second capacitance type touch key
Two electrical quantity variable quantities；
Described first electrical quantity variable quantity and described second electrical quantity variable quantity are compared with default pressing marginal value respectively
Relatively, comparative result is obtained；
With default threshold value as reference, according to described comparative result to described first electrical quantity variable quantity and described second electrical quantity
Variable quantity processes, and identifies and touch from described first capacitance type touch key and described second capacitance type touch key
The capacitance type touch key of response.
Method the most according to claim 1, it is characterised in that the touch-responsive areas of described capacitance type touch key is pre-
Phase response region, described default threshold value is that centre position presses limit value；
Described with default threshold value as reference, according to described comparative result to described first electrical quantity variable quantity and the second electrical quantity
Variable quantity processes, and identifies and touch from described first capacitance type touch key and described second capacitance type touch key
The step of the capacitance type touch key of response includes:
If described comparative result indicate described first electrical quantity variable quantity and described second electrical quantity variable quantity be all higher than described by
Pressure marginal value, then obtain the relative difference between described first electrical quantity variable quantity and described second electrical quantity variable quantity；
Press limit value according to described relative difference and described centre position described intended response region and/or false touch region are occurred
Touch be identified, it is judged that described first capacitance type touch key or the intended response district of described second capacitance type touch key
Whether territory touches；
If it has, then by electrical quantity variable quantity institute maximum in described first electrical quantity variable quantity and described second electrical quantity variable quantity
Corresponding capacitance type touch key is identified as carrying out the capacitance type touch key of touch-responsive.
Method the most according to claim 2, it is characterised in that described press according to described relative difference and described centre position
The touch that described intended response region and/or false touch region are occurred by pressure limit value is identified, it is judged that described first capacitive touch
Whether the intended response region touching button or the second capacitance type touch key occurs the step touched to include:
Judge whether described relative difference presses limit value less than described centre position, if it has not, the most described first capacitance touch
The intended response region of button or described second capacitance type touch key touches.
Method the most according to claim 1, it is characterised in that the touch-responsive areas of described capacitance type touch key is pre-
Phase response region, described default threshold value is for touching skew limit value；
Described with default threshold value as reference, according to described comparative result to described first electrical quantity variable quantity and the second electrical quantity
Variable quantity processes, and identifies and touch from described first capacitance type touch key and described second capacitance type touch key
The step of the capacitance type touch key of response includes:
If described comparative result indicates only one numerical value in described first electrical quantity variable quantity and described second electrical quantity variable quantity
Less than described pressing marginal value, then
With the described skew limit value that touches as reference, according in described first electrical quantity variable quantity and described second electrical quantity variable quantity
Less than the electrical quantity variable quantity of described pressing marginal value, identify described first capacitance type touch key and described second capacitive touch
Touch the capacitance type touch key that intended response region in button occurs to touch；
Intended response region in described first capacitance type touch key and the second capacitance type touch key is occurred the electric capacity touched
Formula touch key-press is identified as carrying out the capacitance type touch key of touch-responsive.
Method the most according to claim 4, it is characterised in that described with the described skew limit value that touches as reference, according to institute
State the electrical quantity variable quantity identification institute less than described pressing marginal value in the first electrical quantity variable quantity and the second electrical quantity variable quantity
State capacitance touch that intended response region in the first capacitance type touch key and the second capacitance type touch key occurs to touch by
The step of key includes:
Extract from described first electrical quantity variable quantity and the second electrical quantity variable quantity and become less than the electrical quantity of described pressing marginal value
Change amount；
Judge whether described electrical quantity variable quantity touches skew limit value less than described, if it has, then
Identify that in described first capacitance type touch key and described second capacitance type touch key, intended response region touches
Capacitance type touch key.
6. a touch recognition device for capacitance type touch key, including:
Touch detection module, for detecting the electrical quantity of capacitance type touch key, determine generation by the change of described electrical quantity
Touch and the first adjacent capacitance type touch key and the second capacitance type touch key；
Variable quantity acquisition module, for obtaining the first electrical quantity variable quantity and described second of described first capacitance type touch key
Second electrical quantity variable quantity of capacitance type touch key；
Comparison module, for by described first electrical quantity variable quantity and described second electrical quantity variable quantity respectively with default pressing
Marginal value compares, and obtains comparative result；
Identification module, for default threshold value as reference, according to described comparative result to described first electrical quantity variable quantity and
Described second electrical quantity variable quantity processes, from described first capacitance type touch key and described second capacitance type touch key
Middle identification carries out the capacitance type touch key of touch-responsive.
Device the most according to claim 6, described identification module includes:
Relative difference obtains submodule, if indicating described first electrical quantity variable quantity and described second electricity for described comparative result
Parameters variation amount is all higher than described pressing marginal value, then obtain described first electrical quantity variable quantity and described second electrical quantity change
Relative difference between amount；
Touch and judge submodule, for pressing limit value to described intended response district according to described relative difference and described centre position
The touch that territory and/or false touch region occur is identified, it is judged that described first capacitance type touch key or described second condenser type
Whether the intended response region of touch key-press touches；
Response identifies submodule, for if it has, then by described first electrical quantity variable quantity and described second electrical quantity variable quantity
Middle maximum capacitance type touch key corresponding to electrical quantity variable quantity is identified as carrying out the capacitance type touch key of touch-responsive.
Device the most according to claim 7, described touch judges that submodule includes:
Judging unit, is used for judging whether described relative difference presses limit value less than described centre position；
Touch recognition unit, for if it has not, the most described first capacitance type touch key or described second capacitance type touch key
Intended response region touch.
Device the most according to claim 6, described identification module includes:
Touch key-press identification submodule, if indicating described first electrical quantity variable quantity and described second electricity for described comparative result
In Parameters variation amount, only one numerical value is less than described pressing marginal value, then with the described skew limit value that touches as reference, according to described
Less than the electrical quantity variable quantity of described pressing marginal value in first electrical quantity variable quantity and described second electrical quantity variable quantity, identify
In described first capacitance type touch key and described second capacitance type touch key there is the condenser type touched in intended response region
Touch key-press；
In response to determining that submodule, for by intended response in described first capacitance type touch key and the second capacitance type touch key
Region occurs the capacitance type touch key touched to be identified as carrying out the capacitance type touch key of touch-responsive.
Device the most according to claim 9, described capacitance type touch key identification submodule includes:
Variable quantity extraction unit, presses less than described for extracting from described first electrical quantity variable quantity and the second electrical quantity variable quantity
The electrical quantity variable quantity of pressure marginal value；
Touch key-press recognition unit, is used for judging whether described electrical quantity variable quantity touches skew limit value less than described, if it is,
Then identify that in described first capacitance type touch key and described second capacitance type touch key, intended response region occurs touch
Capacitance type touch key.
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| CN201610662517.6A CN106301325B (en) | 2016-08-11 | 2016-08-11 | Touch identification method and device of capacitive touch key |
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| CN201610662517.6A CN106301325B (en) | 2016-08-11 | 2016-08-11 | Touch identification method and device of capacitive touch key |
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| CN107979364A (en) * | 2017-12-28 | 2018-05-01 | 青岛海信电器股份有限公司 | Capacitive touch key device and intelligent terminal |
| WO2021081738A1 (en) * | 2019-10-29 | 2021-05-06 | 深圳市汇顶科技股份有限公司 | Slide signal recognition method, mcu, touch-control device, and storage medium |
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| WO2021081738A1 (en) * | 2019-10-29 | 2021-05-06 | 深圳市汇顶科技股份有限公司 | Slide signal recognition method, mcu, touch-control device, and storage medium |
Also Published As
| Publication number | Publication date |
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| CN106301325B (en) | 2019-12-27 |
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