CN106201064B - Touch localization method, device and touch screen - Google Patents
Touch localization method, device and touch screen Download PDFInfo
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- CN106201064B CN106201064B CN201610481381.9A CN201610481381A CN106201064B CN 106201064 B CN106201064 B CN 106201064B CN 201610481381 A CN201610481381 A CN 201610481381A CN 106201064 B CN106201064 B CN 106201064B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
-
- 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
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
-
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
The embodiment of the present application provides a kind of touch localization method, device and touch screen, this method comprises: determining the priority of multiple touch areas of present scanning cycle；Wherein, each touch area are as follows: the region for the scanning optical path composition being blocked along one group of parallel sweep optical path of any scanning direction；Further, according in the M touch area to cross one another, N number of touch area of highest priority determines each quasi- touch point respectively；Further, the true and false for successively judging each quasi- touch point determines each true touch point.It can be seen that, if including blocking generated touch area (i.e. invalid touch area) by stain or dust in the M touch area to cross one another, quasi- touch point is then determined according to N number of touch area of highest priority in the M touch area to cross one another, quasi- touch point can't be determined using invalid touch area, to improve the accuracy for touching positioning when large area foreign matter blocks.
Description
Technical field
The invention relates to technical field of touch control more particularly to a kind of touch localization methods, device and touch screen.
Background technique
Touch screen is the electronic system that can detecte the presence of touch point and touch point position in display area,
It simplifies man-machine interaction method；In current touch technology, infrared touch technology have strong environmental suitability, longer life expectancy, can
Identification touches the advantages such as more of counting and is widely used.The basic structure of infrared touch panel is that the surrounding in touch detection region is pacified
Equipped with several radiated elements and infrared receiver component, wherein infrared emission component and infrared receiver component are corresponded, and are formed red
Outer transmitting reception pair, the infrared receiver component that the infrared light that infrared emission component issues is located at opposite receive；According to infrared light
Whether the position that can be determined whether occur touch event and touch point is blocked.
In existing touch location technology, determined according to the optical path being blocked in road (horizontal optical path and vertical optical path) is just cleared off
Quasi- touch point (including true touch point and false touch point), then whether basis, which tiltedly clears off road and be blocked, successively judges each standard
Touch point it is true and false.
But touch screen is in use, and may being sticky with stain, perhaps these stains of dust or dust may be kept off
The infrared light and/or infrared receiver component that firmly infrared emission component is emitted receive infrared light, determine to will affect existing touch
The process of quasi- touch point is determined in the technology of position, therefore, touching positioning can inaccuracy.
Summary of the invention
The embodiment of the present application provides a kind of touch localization method, device and touch screen, when improving large area foreign matter and blocking
Touch the accuracy of positioning.
In a first aspect, the embodiment of the present application provides a kind of touch localization method, comprising:
Determine the priority of multiple touch areas of present scanning cycle；Wherein, each touch area are as follows: along any scanning
The region for the scanning optical path composition being blocked in one group of parallel sweep optical path in direction；
According in the M touch area to cross one another, N number of touch area of highest priority determines each quasi- touching respectively
It touches a little；Wherein, M and N is the positive integer more than or equal to 2, and N is less than or equal to M；
The true and false for successively judging each quasi- touch point determines each true touch point.
Second aspect, the embodiment of the present application provide a kind of touch positioning device, comprising:
First determining module, the priority of multiple touch areas for determining present scanning cycle；Wherein, each touch
Region are as follows: the region for the scanning optical path composition being blocked along one group of parallel sweep optical path of any scanning direction；
Second determining module, for according in M touch area crossing one another, N number of touch area of highest priority,
Each quasi- touch point is determined respectively；Wherein, M and N is the positive integer more than or equal to 2, and N is less than or equal to M；
Judgment module determines each true touch point for successively judging the true and false of each quasi- touch point.
The third aspect, the embodiment of the present application provide a kind of touch screen, comprising: memory, processor and display screen；
Wherein, display screen is used for sensing user touch；Memory is executed instruction for storing；Processor is for calling storage
Executing instruction in device, to execute following operation:
Determine the priority of multiple touch areas of present scanning cycle；Wherein, each touch area are as follows: along any scanning
The region for the scanning optical path composition being blocked in one group of parallel sweep optical path in direction；
According in the M touch area to cross one another, N number of touch area of highest priority determines each quasi- touching respectively
It touches a little；Wherein, M and N is the positive integer more than or equal to 2, and N is less than or equal to M；
The true and false for successively judging each quasi- touch point determines each true touch point.
In the embodiment of the present application, the priority of multiple touch areas by determining present scanning cycle, and according to mutual
In M touch area of intersection, N number of touch area of highest priority determines each quasi- touch point respectively, wherein invalid touching
The priority for touching region is minimum；Further, the true and false for successively judging each quasi- touch point, determines each true touch
Point；As it can be seen that if including blocking generated touch area (i.e. by stain or dust in the M touch area to cross one another
Invalid touch area), then quasi- touch is determined according to N number of touch area of highest priority in the M touch area to cross one another
Point can't determine quasi- touch point using invalid touch area, to improve the standard for touching positioning when large area foreign matter blocks
Exactness.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this Shen
Some embodiments please for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of infrared touch panel；
Fig. 2A is scanning direction schematic diagram one；
Fig. 2 B is scanning direction schematic diagram two；
Fig. 3 A is scanning direction schematic diagram three；
Fig. 3 B is scanning direction schematic diagram four；
Fig. 4 is touch area schematic diagram one；
Fig. 5 is the flow diagram of the application touch localization method embodiment one；
Fig. 6 is touch area schematic diagram two；
Fig. 7 is touch area schematic diagram three；
Fig. 8 is that the touch in existing touch location technology positions schematic diagram one；
Fig. 9 is that the touch in existing touch location technology positions schematic diagram two；
Figure 10 is the flow diagram of the application touch localization method embodiment two；
Figure 11 is touch area schematic diagram four；
Figure 12 is the structural schematic diagram of the application touch positioning device embodiment；
Figure 13 is the structural schematic diagram of the application touch screen embodiment.
Specific embodiment
To keep the purposes, technical schemes and advantages of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application
In attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is
Some embodiments of the present application, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall in the protection scope of this application.
The basic structure of infrared touch panel is that the surrounding in touch detection region is equipped with several radiated elements and infrared connects
Element is received, as shown in Figure 1 (structural schematic diagram that Fig. 1 is infrared touch panel), by a long transmitting side, one long reception side, one
A short transmitting side and a short receptor side composition, wherein several infrared emission components, correspondingly received side are provided in transmitting side
On be provided with several infrared receiver components (infrared emission component and infrared receiver component are arranged in a one-to-one correspondence, form infrared emission
Receive to)；Optionally, one-to-one scanning mode (the i.e. infrared light quilt that an infrared emission component issues can be used in scanning mode
One infrared receiver component receives) or one-to-many scanning mode (the i.e. infrared light while quilt that an infrared emission component issues
Multiple infrared receiver components receive) etc..Optionally, the structure of infrared touch panel can also be other forms, the application to this not
It is restricted.
The application may be sticky with stain or dust situation for touch screen in use, and proposing one kind can fit
Touch locating scheme when blocking for large area foreign matter improves the accuracy for touching positioning.
In the application before detailed description scheme, it is first described below several contents:
1) scanning direction
In 1 couple of n (n >=1) scanning mode, every scanning optical path possesses difference for some infrared emission component
Angle；For some infrared emission component, corresponding to n scanning optical path each angle, be referred to as one in the application
Scanning direction；It therefore, include n scanning direction in 1 pair of n scanning mode, each scanning direction is by one group with the parallel of slope
Scanning optical path is formed, and (Fig. 2A is scanning direction schematic diagram one, and Fig. 2 B is scanning direction schematic diagram as shown in attached drawing 2A and Fig. 2 B
Two), corresponding 2 scanning directions of long side (i.e. long transmitting side and long reception side) in 1 pair of 2 scanning mode；Such as attached drawing 3A and figure
(Fig. 3 A is scanning direction schematic diagram three, and Fig. 3 B is scanning direction schematic diagram four) shown in 3B, short side is (i.e. in 1 pair of 2 scanning mode
Short transmitting side and short receptor side) corresponding 2 scanning directions.Optionally, in scan period along each scanning direction successively
Scanning one time.
2) touch area
According to the above-mentioned description as described in " scanning direction " it is found that each scanning direction corresponds to one within each scan period
Group parallel sweep optical path, when touch event occurs, touch point can shelter from the corresponding parallel sweep at least one scanning direction
Several scanning optical paths in optical path, it is defined herein: parallel along one group of any scanning direction in scan cycle in office
The region for the scanning optical path composition being blocked in scanning optical path is a touch area of the scanning direction, (Fig. 4 as shown in Figure 4
For touch area schematic diagram one), lines identify the scanning optical path being blocked in present scanning cycle, defined herein current
In the scanning optical path being continuously blocked in scan period, first scanning optical path being blocked is the beginning boundary of the touch area
And the last one scanning optical path being blocked is termination boundary, wherein sequentially can be according to the customized (example of scanning direction difference
Such as, the corresponding scanning direction of the long side as shown in Fig. 2A or Fig. 2 B, then sequence can turn left from left to right or from the right side；Such as Fig. 3 A or
The corresponding scanning direction of short side shown in Fig. 3 B, then sequence can from top to bottom or from the bottom up).
Optionally, touch event involved in the embodiment of the present application can be single-touch event or multiple point touching thing
Part.
Fig. 5 is the flow diagram of the application touch localization method embodiment one.The executing subject of the embodiment of the present application can
Think that the touch positioning device configured in touch screen, the device can pass through software and or hardware realization.The embodiment of the present application
Scheme can be improved when large area foreign matter blocks touch positioning accuracy.As shown in figure 5, the method for the embodiment of the present application can be with
Include:
S501, determine present scanning cycle multiple touch areas priority.
Wherein, each touch area are as follows: the scanning light being blocked along one group of parallel sweep optical path of any scanning direction
The region of road composition.
In the embodiment of the present application, when touch event occurs, touch point can shelter from least one in present scanning cycle
Several scanning optical paths in the corresponding parallel sweep optical path in a scanning direction；On the other hand, since touch screen surface may
Being sticky with stain, perhaps also may to shelter from least one scanning direction for a long time corresponding flat for these stains of dust or dust
Several scanning optical paths (can block the identical scanning optical path in position in multiple scan periods) in row scanning optical path；Therefore,
Really production is blocked by touch point in first part touch area in the touch area determined according to the definition of touch area
Raw, by the generation of blocking of stain or dust, there are also remove first part touch area and second for second part touch area
Part III touch area except partial touch region may by touch point and stain it is common block generation；In the application
Definition: the priority of first part touch area (and be known as effective touch area) is high priority, Part III Petting Area
The priority in domain is middle priority, and the priority of second part touch area (also referred to as invalid touch area) is low preferential
Grade.For example, as shown in Figure 6 (Fig. 6 is touch area schematic diagram two), the touch area determined according to the definition of touch area
It include: touch area 1, touch area 2, touch area 3 and touch area 4；Wherein, 1), touch area 1 and touch area 3 are true
The real generation of blocking by touch point, therefore, touch area 1 and touch area 3 is are determined according to the definition of touch area
Touch area in first part touch area (i.e. effective touch area)；2), touch area 4 by stain or dust screening
What gear generated, therefore, the second part in the touch area that touch area 4 is determined for the definition according to touch area touches
Region (i.e. invalid touch area)；3), touch area 2 by touch point and stain it is common block generation, therefore, touch area
Part III touch area in 2 touch areas determined for the definition according to touch area；According to defined herein:
The priority of touch area 1 and touch area 3 be high priority, touch area 2 priority be middle priority and Petting Area
The priority in domain 4 is low priority.
In this step, multiple touch areas (i.e. 2 and any of the above of present scanning cycle of present scanning cycle is determined
A touch area) priority；Optionally, according to the respective producing cause in multiple touch areas of present scanning cycle, respectively
The priority of corresponding touch area is determined, for example, if touch area A is really by the generation of blocking of touch point, the Petting Area
The priority of domain A (i.e. effective touch area) is high priority；If touch area B by the generation of blocking of stain or dust,
Then the priority of touch area B (i.e. invalid touch area) is low priority；If touch area C may be by touch point and stain
Common blocking generation, then the priority of touch area C is middle priority.
Optionally, the specific implementation step of above-mentioned steps S501 includes:
The block information indicated value and default occlusion threshold being blocked according to the scanning optical path in each touch area, point
The priority of each touch area is not judged；
If the block information indicated value that the scanning optical path in the first touch area is blocked is less than or equal to default occlusion threshold,
The priority for then determining the first touch area is high priority；
If the block information indicated value that the scanning optical path in the first touch area is blocked is greater than default occlusion threshold, really
The priority of fixed first touch area is low priority；
If the block information indicated value that first part's scanning optical path in the first touch area is blocked is greater than default block
Threshold value, and the block information indicated value that the second part scanning optical path in the first touch area is blocked is less than or equal to default block
Threshold value, it is determined that the priority of the first touch area is middle priority；
Wherein, the first touch area is any touch area in multiple touch areas；Second part scanning optical path is the
In scanning optical path in one touch area in addition to first part's scanning optical path remaining scanning optical path.
In view of real touch event can usually continue a bit of time (being such as less than equal to a default duration), and
Will not last very long, in the embodiment of the present application, determine the specific of the priority of multiple touch areas of present scanning cycle
Realize that step includes the following:
By the block information indicated value that is blocked according to the scanning optical path in each touch area and default block threshold
Value, judges the priority of each touch area respectively；Optionally, block information indicated value is for identifying what scanning optical path was blocked
Time span, for example, block information indicated value can be to block duration (duration continuously blocked), or block scanning week
Issue (the scan period number continuously blocked)；Accordingly, occlusion threshold is preset for judging whether quasi- touch point is true
Real touch point, such as: if block information indicated value is to block duration, accordingly, default occlusion threshold can block to be default
Duration (is more than or equal to the default duration)；It is accordingly, default to block if block information indicated value is to block scan period number
Threshold value can for it is default block the scan period (this is default block the scan period it is corresponding always block duration and preset more than or equal to this hold
Continuous duration).Optionally, block information indicated value can also be blocked the value of information for other mark scanning optical paths, accordingly, in advance
If occlusion threshold can also be other values, in the embodiment of the present application to this and with no restriction.
Further, A) if the block information indicated value that the scanning optical path in the first touch area is blocked is less than or equal in advance
If occlusion threshold, that is, think that first touch area is strictly to block generation by touch point, it is determined that the first touch area
The priority of (i.e. effective touch area) is high priority；B) if the scanning optical path in the first touch area be blocked block letter
It ceases indicated value and is greater than default occlusion threshold, that is, think that first touch area is to block generation by stain or dust, then
The priority for determining the first touch area (i.e. invalid touch area) is low priority；C) if first in the first touch area
The block information indicated value that point scanning optical path is blocked be greater than default occlusion threshold (i.e. first part's scanning optical path block be by
What stain or dust were blocked), and the block information instruction that the second part scanning optical path in the first touch area is blocked
Value is less than or equal to default occlusion threshold (i.e. second part scanning optical path block what strictly touched point was blocked), it is determined that
First touch area (i.e. first touch area be by touch point and stain it is common block generation) priority be in it is excellent
First grade.
Such as: it blocks duration by what is be blocked according to the scanning optical path in each touch area and default blocks duration
(being more than or equal to the default duration), the priority of each touch area is judged respectively；A) if, sweeping in the first touch area
It retouches the duration of blocking that optical path is blocked and blocks duration less than or equal to default, that is, think that first touch area is strictly by touch point
Block generation, it is determined that the priority of first touch area is high priority；B) if, the scanning in the first touch area
Duration that optical path was blocked block greater than this it is default block duration, that is, think that first touch area is by stain or dust
Block generation, it is determined that the priority of first touch area is low priority；C) if, first in the first touch area
Duration that point scanning optical path was blocked block greater than this it is default block duration, and the second part scanning in first touch area
Duration that optical path was blocked block default blocks duration less than or equal to this, it is determined that the priority of the first touch area be in it is preferential
Grade (i.e. first touch area be by touch point and stain it is common block generation).Optionally, when in some scan period
When interior certain scanning optical path is blocked for the first time, touch positioning device, which will record, initially blocks the time (such as t0), so as to after
Scan period in this scanning optical path by the continuous time (such as t1) hidden and this initially block the time (such as t0) and determine that this sweeps
That retouches that optical path is blocked blocks duration (such as t1-t0)；Certainly, it can also determine that scanning optical path was blocked blocks otherwise
Duration, the embodiment of the present application is to this and with no restriction.
Such as: scan period number and default screening are blocked by what is be blocked according to the scanning optical path in each touch area
The scan period is kept off, judges the priority of each touch area respectively；A) if, the scanning optical path in the first touch area is blocked
It blocks scan period number to block the scan period less than or equal to default, that is, thinks that first touch area is strictly the screening by touch point
What gear generated, it is determined that the priority of first touch area is high priority；B) if, the scanning optical path in the first touch area
Be blocked block scan period number greater than this it is default block the scan period, that is, think first touch area be by stain or
Dust blocks generation, it is determined that the priority of first touch area is low priority；C) if, in the first touch area
What first part's scanning optical path was blocked block scan period number greater than this it is default block the scan period, and first touch area
In the scan period number that blocks that is blocked of second part scanning optical path default block the scan period less than or equal to this, it is determined that the
The priority of one touch area be middle priority (i.e. first touch area be by touch point and stain it is common block generation
).Optionally, when certain scanning optical path is blocked for the first time within i-th of scan period (i is the positive integer more than or equal to 1),
Touch positioning device, which will record, blocks scan period number (such as r be equal to 1), further, if in the i+1 scan period this
Scanning optical path continues to be blocked, then touch positioning device can will block scan period number and add 1 (such as r is updated to 2), and so on note
That records that this scanning optical path is blocked blocks scan period number；Certainly, also it can determine that otherwise scanning optical path is blocked
Block scan period number, the embodiment of the present application is to this and with no restriction.
Optionally, for ease of description, above-mentioned part is with " the screening being blocked according to the scanning optical path in the first touch area
Gear information indicated value be compared with default occlusion threshold, judge the priority of first touch area " for retouched in detail
It states, the priority method of determination of other touch areas is similar with the priority method of determination of above-mentioned first touch area, herein not
It repeats again.Certainly, also " the preferential of multiple touch areas of present scanning cycle can be determined by above-mentioned in the embodiment of the present application
Deformation implementation or other means of grade " realizes, the application is to this and with no restriction.
In the M touch area that S502, basis cross one another, N number of touch area of highest priority determines each respectively
Quasi- touch point.
Wherein, M and N is the positive integer more than or equal to 2, and N is less than or equal to M.
In this step, when determining some quasi- touch point (including true touch point and/or false touch point), according to crossing one another
M touch area in, the position of the quasi- touch point is determined in the intersection region between N number of touch area of highest priority,
Optionally, according in the M touch area to cross one another, priority is preferentially selected according to the priority sequence of touch area
A touch area of highest preceding N (such as N is less than M), and determine that the standard is touched according to the intersection region between the top n touch area
Position a little is touched, includes that generated Petting Area is blocked by stain or dust in the M touch area even to cross one another
Domain (i.e. invalid touch area) will not use invalid touch area, to improve when then determining quasi- touch point in step S502
The accuracy of positioning is touched when large area foreign matter blocks；For example, as shown in fig. 6, if M be equal to 4, N be equal to 3, touch area 1,
The priority sequence of touch area 2, touch area 3 and touch area 4 are as follows: 1/ touch area 3- of touch area > Petting Area
Domain 2- > touch area 4 then determines quasi- touch point according to intersection region between touch area 1, touch area 3 and touch area 2
Position, as shown in Figure 7 (Fig. 7 be touch area schematic diagram three).It optionally, can also be according to the M touch area to cross one another
In, two touch areas of highest priority are preferentially selected according to the priority sequence of touch area, are determined respectively each
Quasi- touch point, i.e., when determining some quasi- touch point, according in the M touch area to cross one another, according to the excellent of touch area
First grade sequence preferentially selects two touch areas of highest priority, and according to the zone of intersection between the two touch areas
Determine the position of the quasi- touch point in domain.Certainly, the application can also determine quasi- touch point, the embodiment of the present application otherwise
In to this and with no restriction.It optionally, may different (i.e. different quasi- touch points by the touch area number of different quasi- touch points
Corresponding M may be different)；Optionally it is determined that the touch area number of selected highest priority can when different quasi- touch points
It can be not identical (i.e. different quasi- touch points corresponding N may be not identical) yet yet.
Optionally, each quasi- touch point is determined respectively according to above-mentioned same mode, details are not described herein again.
S503, the true and false for successively judging each quasi- touch point, determine each true touch point.
In this step, it may pass through according to true touching comprising false touch point in quasi- touch point determined by through the above steps
Touch feature (can all be blocked by all scanning optical paths of all touch areas of the true touch point) and false touch a little
The feature (not being blocked by the scanning optical path of at least one touch area of the vacation touch point) of point successively judges each quasi- touching
The true and false a little is touched, all false touch points are got rid of and determines all true touch points；Optionally, by being touched according to by some standard
At least one not used scanning optical path touched a little (determines not used when the quasi- touch point i.e. in abovementioned steps S502
Scanning optical path) whether it is blocked to judge the true and false of the quasi- touch point；If at least one not used scanning optical path is not
It being blocked, it is determined that the quasi- touch point is false touch point, and the vacation touch point is got rid of, and so on, until by all vacations
Touch point is got rid of, remaining, is true touch point.Certainly, in the embodiment of the present application, can also successively sentence otherwise
Break the true and false (such as being judged by way of the quasi- touch point true and false of existing judgement) of each quasi- touch point, to this in the present embodiment
And with no restriction.
Further, the priority of multiple touch areas of scan cycle under determining can be continued, and then according to mutual intersection
N number of touch area of highest priority, determines each quasi- touch point, and successively judge respectively in the M touch areas of fork
The true and false of each quasi- touch point, determines each true touch point, and so on, the same above-mentioned steps of concrete implementation mode
S501-S503, details are not described herein again.
In existing touch location technology, when touch screen is sticky with stain, perhaps these stains of dust or dust may be kept off
The infrared light and/or infrared receiver component that firmly infrared emission component is emitted, which receive infrared light, (may shelter from least one
Several scanning optical paths in the corresponding parallel sweep optical path in a scanning direction), to will affect in existing touch location technology
Determine the process of quasi- touch point, therefore, touching positioning can inaccuracy；(Fig. 8 is the touching in existing touch location technology as depicted in figure 8
Touch positioning schematic diagram one), the invalid touch area as caused by stain or dust can't be considered in existing touch location technology,
The position (such as center position of rectangular area A) that quasi- touch point is directly determined according to two touch areas to cross one another, can
See, the center position of rectangular area A and the position of true touch point are significantly different；(Fig. 9 is existing touch positioning as shown in Figure 9
Touch in technology positions schematic diagram two), the position of the first quasi- touch point is determined according to two touch areas to cross one another respectively
The position (such as center position of rectangular area C) for setting (such as center position of rectangular area B) and the second quasi- touch point, can
See, it is quasi- according to the position of the first quasi- touch point determined by existing touch location technology and the position of true touch point 1 and second
The position of touch point and the position of true touch point 2 are significantly different.
Compared to existing touch location technology, in the embodiment of the present application, pass through the multiple touches for determining present scanning cycle
The priority in region, and according in the M touch area to cross one another, N number of touch area of highest priority determines every respectively
A quasi- touch point, wherein the priority of invalid touch area is minimum；Further, successively judge each quasi- touch point
The true and false determines each true touch point；As it can be seen that if in the M touch area to cross one another including the screening by stain or dust
Touch area (i.e. invalid touch area) caused by keeping off just will not then use invalid touch area when determining quasi- touch point,
To improve the accuracy for touching positioning when large area foreign matter blocks.
Figure 10 is the flow diagram of the application touch localization method embodiment two.On the basis of the above embodiments, such as
Shown in Figure 10, the method for the embodiment of the present application may include:
The angle of S1001, the number for setting scanning direction and each scanning direction.
In this step, the number of scanning direction and the angle of each scanning direction are set, optionally, of scanning direction
Number is the integer more than or equal to 2, and the angle in any two different scanning direction is different, the long side pair as shown in Fig. 2A or Fig. 2 B
Two scanning directions answered, or corresponding two scanning directions of the short side as shown in Fig. 3 A or Fig. 3 B.
S1002, it is scanned along each scanning direction.
In this step, successively it is scanned in present scanning cycle along each scanning direction, as shown in Fig. 2A or Fig. 2 B,
Each infrared emission component of long transmitting side is successively scanned along vertical scanning direction, is secondly successively carried out along oblique scanning direction
Scanning, as shown in Fig. 3 A or Fig. 3 B, each infrared emission component of short transmitting side is successively scanned along horizontal scan direction,
It is secondary to be successively scanned along oblique scanning direction.Optionally, it is successively scanned in present scanning cycle along different scanning direction
Sequence does not limit, as short side scans, long side scans, first along vertical scanning direction progress after first short side scanning after elder generation's long side scanning
Be scanned after scanning along oblique scanning direction, or first along oblique scanning direction be scanned after be scanned along vertical scanning direction
Deng.
S1003, the touch area for counting present scanning cycle.
In this step, multiple touch areas of present scanning cycle are counted, wherein each touch area are as follows: sweep along any
Retouch the region for the scanning optical path composition being blocked in one group of parallel sweep optical path in direction.As shown in Figure 6 according to touch area
Defining determined touch area includes: touch area 1, touch area 2, touch area 3 and touch area 4.
S1004, determine present scanning cycle multiple touch areas priority.
In this step, determines the mode of the priority of multiple touch areas of present scanning cycle, can be detailed in the application
The record in embodiment is stated, details are not described herein again.
S1005, each quasi- touch point is determined according to the priority of touch area.
In this step, when determining some quasi- touch point (including true touch point and/or false touch point), according to crossing one another
M touch area in, the position of the quasi- touch point is determined in the intersection region between N number of touch area of highest priority,
Optionally, according in the M touch area to cross one another, priority is preferentially selected according to the priority sequence of touch area
Highest two touch areas, and determine according to the intersection region between the two touch areas the position of the quasi- touch point,
For example, as shown in fig. 6, if M is equal to 4, touch area 1, touch area 2, touch area 3 and touch area 4 priority height
Sequentially are as follows: 1/ touch area 3- of touch area > touch area 2- > touch area 4, then preferentially two touchings of selection highest priority
It touches region (i.e. touch area 1 and touch area 3), and standard is determined according to intersection region between touch area 1 and touch area 3
The position of touch point, as shown in figure 11 (Figure 11 is touch area schematic diagram four).Optionally, distinguish according to above-mentioned same mode
Determine each quasi- touch point, details are not described herein again.
S1006, the true and false for successively judging each quasi- touch point, determine each true touch point.
In this step, the true of each quasi- touch point is successively judged according to the feature of the feature of true touch point and false touch point
Puppet gets rid of all false touch points and determines all true touch points；Optionally, successively judge the true and false of each quasi- touch point
The specific implementation steps are as follows: step A, according in the second touch area of at least one of the M touch area to cross one another
Whether scanning optical path is blocked by the first quasi- touch point, judges the true and false of the first quasi- touch point；Wherein, the second touch area are as follows: M
Any touch area in touch area other than for determining touch area used by the first quasi- touch point is (i.e. in step
Not used any touch area when the first quasi- touch point is determined in S1005)；First quasi- touch point is in step S1005
Any one the quasi- touch point in all quasi- touch points determined；If the scanning light in step B, any second touch area
It is not blocked by the first quasi- touch point on road, it is determined that the first quasi- touch point is false touch point, and by the first quasi- touch point from all
It is got rid of in quasi- touch point, obtains updated all quasi- touch points；Step C, step A to step B is repeated (by all vacations
Get rid of touch point), until without containing false touch point in updated all quasi- touch points.Certainly, in the embodiment of the present application, also
It can successively judge the true and false of each quasi- touch point otherwise, in the present embodiment to this and with no restriction.
S1007, track following, coordinate conversion and output processing.
In this step, continue subsequent track following, coordinate conversion and output processing etc., wherein 1), track following refers to:
The distance relation that each touch point is concentrated according to historical touch point set and existing touch point determines that each existing touching is concentrated in existing touch point
The corresponding relationship of a little historical touch point corresponding with historical touch point concentration is touched, such as: assuming that history was calculated in a upper period
Existing touch point P11 and existing touch point P22 is calculated in touch point P1 and historical touch point P2, this period, by calculating P1
With P11 distance D1 and P1 and P22 distance D2, if D1 is less than D2, it is determined that P11 and P1 belong to the same track；2) it sits
Mark conversion refers to: due to the coordinate system and the affiliated display terminal of the touch screen (such as computer or television) in the processor of touch screen
In coordinate system it is different, therefore, the processor of touch screen exports touch point information to be output to display belonging to the touch screen
It needs to carry out coordinate conversion before terminal；3) output processing refers to: the affiliated display terminal response touch point event of the touch screen is (such as
Generate the functional responses such as left button click or right button).Optionally, the specific implementation of track following, coordinate conversion and output processing
Process can refer to existing track following, coordinate conversion and output processing mode, and details are not described herein again.
Further, it returns and continues to execute step S1002- step S1007, continue to execute the operation in next period.
In conclusion in the embodiment of the present application, the priority of multiple touch areas by determining present scanning cycle, and
When determining some quasi- touch point, according in the M touch area to cross one another, between N number of touch area of highest priority
Intersection region determine the position of the quasi- touch point, wherein effective touch area (i.e. by the generation of blocking of touch point)
The priority of highest priority, invalid touch area (i.e. by the generation of blocking of stain or dust) is minimum；Further, according to
The true and false of the secondary each quasi- touch point of judgement, determines each true touch point；As it can be seen that if the M touch area Zhong Bao to cross one another
It includes and generated touch area (i.e. invalid touch area) is blocked by stain or dust, then touched according to M to cross one another
The N number of touch area for touching highest priority in region determines quasi- touch point, and quasi- touch can't be determined using invalid touch area
Point, to improve the accuracy for touching positioning when large area foreign matter blocks.
Figure 12 is the structural schematic diagram of the application touch positioning device embodiment.Optionally, which can be with
Configuration is in touch screen.As shown in figure 12, touch positioning device 120 provided in this embodiment may include: the first determining module
1201, the second determining module 1202 and judgment module 1303.
First determining module 1201, the priority of multiple touch areas for determining present scanning cycle；Wherein, each
Touch area are as follows: the region for the scanning optical path composition being blocked along one group of parallel sweep optical path of any scanning direction；
Second determining module 1202, for according in M touch area crossing one another, N number of touch of highest priority
Region determines each quasi- touch point respectively；Wherein, M and N is the positive integer more than or equal to 2, and N is less than or equal to M；
Judgment module 1203 determines each true touch point for successively judging the true and false of each quasi- touch point.
Touch positioning device provided by the embodiments of the present application may include: the first determining module, the second determining module and
Judgment module；The priority of multiple touch areas of present scanning cycle, further, second are determined by the first determining module
For determining module according in the M touch area to cross one another, N number of touch area of highest priority determines each quasi- touching respectively
It touches a little, wherein the priority of invalid touch area is minimum；Further, judgment module successively judges the true of each quasi- touch point
Puppet determines each true touch point；As it can be seen that if in the M touch area to cross one another including blocking by stain or dust
Generated touch area (i.e. invalid touch area), then touch positioning device provided by the embodiments of the present application can be according to mutually intersection
N number of touch area of highest priority determines quasi- touch point in M touch area of fork, can't be true using invalid touch area
Touch point is fixed, to improve the accuracy for touching positioning when large area foreign matter blocks.
Optionally, as a kind of enforceable mode, on the basis of the embodiment shown in Figure 12, the first determining module
1201 are specifically used for:
The block information indicated value and default occlusion threshold being blocked according to the scanning optical path in each touch area, point
The priority of each touch area is not judged；
If the block information indicated value that the scanning optical path in the first touch area is blocked is less than or equal to default occlusion threshold,
The priority for then determining the first touch area is high priority；
If the block information indicated value that the scanning optical path in the first touch area is blocked is greater than default occlusion threshold, really
The priority of fixed first touch area is low priority；
If the block information indicated value that first part's scanning optical path in the first touch area is blocked is greater than default block
Threshold value, and the block information indicated value that the second part scanning optical path in the first touch area is blocked is less than or equal to default block
Threshold value, it is determined that the priority of the first touch area is middle priority；
Wherein, the first touch area is any touch area in multiple touch areas；Second part scanning optical path is the
In scanning optical path in one touch area in addition to first part's scanning optical path remaining scanning optical path.
Optionally, as another enforceable mode, on the basis of the above embodiment, the second determining module 1202
It is specifically used for: according in the M touch area to cross one another, is preferentially selected preferentially according to the priority sequence of touch area
Highest two touch areas of grade, determine each quasi- touch point respectively.
Optionally, as another enforceable mode, on the basis of the above embodiment, judgment module 1203 is specific
For executing following steps:
Step A, it is according to the scanning optical path in the second touch area of at least one of the M touch area to cross one another
It is no to be blocked by the first quasi- touch point, judge the true and false of the described first quasi- touch point；Wherein, second touch area are as follows: M touching
Touch any touch area in region other than for determining touch area used by the first quasi- touch point；First quasi- touch
Point is any one quasi- touch point in all quasi- touch points；
If the scanning optical path in step B, any second touch area is not blocked by the first quasi- touch point, it is determined that first is quasi-
Touch point is false touch point, and the first quasi- touch point is got rid of from all quasi- touch points, is obtained updated all
Quasi- touch point；
Step C, step A to step B is repeated, until without containing false touch point in updated all quasi- touch points.
Optionally, as another enforceable mode, on the basis of the above embodiment, touch positioning device 120
Further include:
Statistical module, for counting multiple touch areas of present scanning cycle.
Touch positioning device provided in this embodiment can be used for executing the above-mentioned touch localization method of the present invention and arbitrarily implement
The technical solution of example, it is similar that the realization principle and technical effect are similar, and details are not described herein again.
Figure 13 is the structural schematic diagram of the application touch screen embodiment.As shown in figure 13, the touch screen 130 of the present embodiment can
To include: memory 1301, processor 1302 and display screen 1303；Memory 1301 and display screen 1303 can and processor
1302 are connected；Wherein, display screen 1303 is used for sensing user touch；Memory 1301 is executed instruction for storing；Processor
1302 for calling executing instruction in memory 301, to execute following operation:
Determine the priority of multiple touch areas of present scanning cycle；Wherein, each touch area are as follows: along any scanning
The region for the scanning optical path composition being blocked in one group of parallel sweep optical path in direction；
According in the M touch area to cross one another, N number of touch area of highest priority determines each quasi- touching respectively
It touches a little；Wherein, M and N is the positive integer more than or equal to 2, and N is less than or equal to M；
The true and false for successively judging each quasi- touch point determines each true touch point.
Optionally, processor 1302 can only include central processing unit (Central Processing Unit, abbreviation
CPU), it is also possible to CPU, digital signal processor (digital signal processor, abbreviation DSP), graphics processor
The combination of (Graphic Processing Unit, abbreviation GPU) and the control chip (such as baseband chip) in communication unit.
Specifically, the program in memory 1301 may include program code, and program code includes computer operation instruction.
Memory 1301 may include random access memory (random access memory, abbreviation RAM), it is also possible to further include non-
Volatile memory (non-volatile memory), for example, at least a magnetic disk storage.
Optionally, touch screen involved in the application can be infrared touch panel.
Optionally it is determined that the priority of multiple touch areas of present scanning cycle, comprising:
The block information indicated value and default occlusion threshold being blocked according to the scanning optical path in each touch area, point
The priority of each touch area is not judged；
If the block information indicated value that the scanning optical path in the first touch area is blocked is less than or equal to default occlusion threshold,
The priority for then determining the first touch area is high priority；
If the block information indicated value that the scanning optical path in the first touch area is blocked is greater than default occlusion threshold, really
The priority of fixed first touch area is low priority；
If the block information indicated value that first part's scanning optical path in the first touch area is blocked is greater than default block
Threshold value, and the block information indicated value that the second part scanning optical path in the first touch area is blocked is less than or equal to default block
Threshold value, it is determined that the priority of the first touch area is middle priority；
Wherein, the first touch area is any touch area in multiple touch areas；Second part scanning optical path is the
In scanning optical path in one touch area in addition to first part's scanning optical path remaining scanning optical path.
Optionally, according in the M touch area to cross one another, N number of touch area of highest priority determines every respectively
A quasi- touch point, comprising:
According in the M touch area to cross one another, preferentially selected preferentially according to the priority sequence of touch area
Highest two touch areas of grade, determine each quasi- touch point respectively.
Optionally, successively judge the true and false of each quasi- touch point, comprising:
Step A, it is according to the scanning optical path in the second touch area of at least one of the M touch area to cross one another
It is no to be blocked by the first quasi- touch point, judge the true and false of the first quasi- touch point；Wherein, the second touch area are as follows: in M touch area
Any touch area other than for determining touch area used by the first quasi- touch point；First quasi- touch point is all
Any one quasi- touch point in quasi- touch point；
If the scanning optical path in step B, any second touch area is not blocked by the first quasi- touch point, it is determined that first is quasi-
Touch point is false touch point, and the first quasi- touch point is got rid of from all quasi- touch points, obtains updated all quasi- touchings
It touches a little；
Step C, step A to step B is repeated, until without containing false touch point in updated all quasi- touch points.
Optionally it is determined that before the priority of multiple touch areas of present scanning cycle, further includes:
Count multiple touch areas of present scanning cycle.
Touch screen provided in this embodiment can be used for executing the skill of the above-mentioned touch localization method any embodiment of the present invention
Art scheme, it is similar that the realization principle and technical effect are similar, and details are not described herein again.
Those of ordinary skill in the art will appreciate that: the various digital numbers such as first, second be referred to herein are only to retouch
The differentiation for facilitating progress is stated, the range of the embodiment of the present application is not intended to limit.
One with ordinary skill in the art would appreciate that in the various embodiments of the application, the serial number of above-mentioned each process
Size is not meant that the order of the execution order, and the execution sequence of each process should be determined by its function and internal logic, without answering
Any restriction is constituted to the implementation process of the embodiment of the present application.
Those skilled in the art can be understood that, for convenience and simplicity of description, only with above-mentioned each functional module
Division progress for example, in practical application, can according to need and above-mentioned function distribution is complete by different functional modules
At the internal structure of device being divided into different functional modules, to complete all or part of the functions described above.On
The specific work process for stating the device of description, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the application, rather than its limitations；To the greatest extent
Pipe is described in detail the application referring to foregoing embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, each embodiment technology of the application that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (9)
1. a kind of touch localization method characterized by comprising
Determine the priority of multiple touch areas of present scanning cycle；Wherein, each touch area are as follows: along any scanning
The region for the scanning optical path composition being blocked in one group of parallel sweep optical path in direction；
According in the M to cross one another the touch areas, N number of touch area of highest priority determines each quasi- touching respectively
It touches a little；Wherein, the M and N is the positive integer more than or equal to 2, and the N is less than or equal to the M；
The true and false for successively judging each quasi- touch point, determines each true touch point；
In the M touch areas that the basis crosses one another, N number of touch area of highest priority determines each respectively
Quasi- touch point, comprising:
According in the M to cross one another the touch areas, preferentially selected according to the priority sequence of the touch area
Two touch areas of highest priority, determine each quasi- touch point respectively.
2. the method according to claim 1, wherein multiple touch areas of the determining present scanning cycle
Priority, comprising:
The block information indicated value and default occlusion threshold being blocked according to the scanning optical path in each touch area, point
The priority of each touch area is not judged；
If the block information indicated value that the scanning optical path in the first touch area is blocked is less than or equal to the default occlusion threshold,
The priority for then determining first touch area is high priority；
If the block information indicated value that the scanning optical path in the first touch area is blocked is greater than the default occlusion threshold, really
The priority of fixed first touch area is low priority；
It is blocked if the block information indicated value that first part's scanning optical path in the first touch area is blocked is greater than described preset
Threshold value, and the block information indicated value that the second part scanning optical path in first touch area is blocked is less than or equal to described
Default occlusion threshold, it is determined that the priority of first touch area is middle priority；
Wherein, first touch area is any touch area in the multiple touch area；The second part scanning
Optical path be first touch area in scanning optical path in addition to first part's scanning optical path remaining scanning optical path；
The block information indicated value is for identifying the time span that scanning optical path is blocked.
3. method according to claim 1 or 2, which is characterized in that described successively to judge the true of each quasi- touch point
It is pseudo-, comprising:
Step A, according to the scanning optical path in the second touch area of at least one of M touch area crossing one another whether by
First quasi- touch point is blocked, and judges the true and false of the described first quasi- touch point；Wherein, second touch area are as follows: the M touching
Touch any touch area in region other than for determining touch area used by the described first quasi- touch point；Described
Surely touch point is any one quasi- touch point in all quasi- touch points；
If the scanning optical path in step B, any second touch area is not blocked by the described first quasi- touch point, it is determined that institute
Stating the first quasi- touch point is false touch point, and the described first quasi- touch point is got rid of from all quasi- touch points, is obtained
Updated all quasi- touch points；
Step C, step A to step B is repeated, until without containing false touch point in updated all quasi- touch points.
4. method according to claim 1 or 2, which is characterized in that multiple Petting Areas of the determining present scanning cycle
Before the priority in domain, further includes:
Count multiple touch areas of present scanning cycle.
5. a kind of touch positioning device characterized by comprising
First determining module, the priority of multiple touch areas for determining present scanning cycle；Wherein, each touch
Region are as follows: the region for the scanning optical path composition being blocked along one group of parallel sweep optical path of any scanning direction；
Second determining module, for according in the M that the crosses one another touch areas, N number of touch area of highest priority,
Each quasi- touch point is determined respectively；Wherein, the M and N is the positive integer more than or equal to 2, and the N is less than or equal to institute
State M；
Judgment module determines each true touch point for successively judging the true and false of each quasi- touch point；
Second determining module is specifically used for: according in the touch areas the M to cross one another, according to the touch area
Priority sequence preferentially select two touch areas of highest priority, to determine each quasi- touch point respectively.
6. device according to claim 5, which is characterized in that first determining module is specifically used for:
The block information indicated value and default occlusion threshold being blocked according to the scanning optical path in each touch area, point
The priority of each touch area is not judged；
If the block information indicated value that the scanning optical path in the first touch area is blocked is less than or equal to the default occlusion threshold,
The priority for then determining first touch area is high priority；
If the block information indicated value that the scanning optical path in the first touch area is blocked is greater than the default occlusion threshold, really
The priority of fixed first touch area is low priority；
It is blocked if the block information indicated value that first part's scanning optical path in the first touch area is blocked is greater than described preset
Threshold value, and the block information indicated value that the second part scanning optical path in first touch area is blocked is less than or equal to described
Default occlusion threshold, it is determined that the priority of first touch area is middle priority；
Wherein, first touch area is any touch area in the multiple touch area；The second part scanning
Optical path be first touch area in scanning optical path in addition to first part's scanning optical path remaining scanning optical path；
The block information indicated value is for identifying the time span that scanning optical path is blocked.
7. device according to claim 5 or 6, which is characterized in that the judgment module is specifically used for executing following steps:
Step A, according to the scanning optical path in the second touch area of at least one of M touch area crossing one another whether by
First quasi- touch point is blocked, and judges the true and false of the described first quasi- touch point；Wherein, second touch area are as follows: the M touching
Touch any touch area in region other than for determining touch area used by the described first quasi- touch point；Described
Surely touch point is any one quasi- touch point in all quasi- touch points；
If the scanning optical path in step B, any second touch area is not blocked by the described first quasi- touch point, it is determined that institute
Stating the first quasi- touch point is false touch point, and the described first quasi- touch point is got rid of from all quasi- touch points, is obtained
Updated all quasi- touch points；
Step C, step A to step B is repeated, until without containing false touch point in updated all quasi- touch points.
8. device according to claim 5 or 6, which is characterized in that further include:
Statistical module, for counting multiple touch areas of present scanning cycle.
9. a kind of touch screen characterized by comprising memory, processor and display screen；
Wherein, the display screen is used for sensing user touch；The memory is executed instruction for storing；The processor is used for
Executing instruction in the memory is called, to execute following operation:
Determine the priority of multiple touch areas of present scanning cycle；Wherein, each touch area are as follows: along any scanning
The region for the scanning optical path composition being blocked in one group of parallel sweep optical path in direction；
According in the M to cross one another the touch areas, N number of touch area of highest priority determines each quasi- touching respectively
It touches a little；Wherein, the M and N is the positive integer more than or equal to 2, and the N is less than or equal to the M；
The true and false for successively judging each quasi- touch point, determines each true touch point；
In the M touch areas that the basis crosses one another, N number of touch area of highest priority determines each respectively
Quasi- touch point, comprising:
According in the M to cross one another the touch areas, preferentially selected according to the priority sequence of the touch area
Two touch areas of highest priority, determine each quasi- touch point respectively.
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| CN109542276B (en) * | 2018-11-22 | 2022-02-08 | 青岛海信商用显示股份有限公司 | Touch point identification method and device and display equipment |
| CN110262685B (en) * | 2019-05-28 | 2022-07-26 | 青岛海信商用显示股份有限公司 | Touch detection method, touch detection device, storage medium and touch screen |
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| CN114415864B (en) * | 2020-10-13 | 2024-02-02 | 青岛海信商用显示股份有限公司 | Touch area determining method and display device |
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