CN106383615A - Unilateral infrared touch device and touch recognition method and device - Google Patents
Unilateral infrared touch device and touch recognition method and device Download PDFInfo
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- CN106383615A CN106383615A CN201610802537.9A CN201610802537A CN106383615A CN 106383615 A CN106383615 A CN 106383615A CN 201610802537 A CN201610802537 A CN 201610802537A CN 106383615 A CN106383615 A CN 106383615A
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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
- G06F3/042—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
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Abstract
Embodiments of the invention provide a unilateral infrared touch scheme. In a unilateral infrared touch device, a plurality of infrared elements are arranged on one direction edge; the plurality of infrared elements comprise infrared emission elements and infrared reception elements, which are alternately arranged; one light path is determined by a central light ray of an infrared beam emitted by each infrared emission element, wherein a plurality of infrared emission elements determine a plurality of parallel light paths; each infrared reception element can receive at least one light path determined by the central light rays of infrared light rays, wherein a plurality of infrared reception elements determine a plurality of parallel light paths; and through above way, the positions of touch points are determined according to intersection points between the light paths respectively determined by the infrared emission elements and the infrared reception elements, and through the unilateral setting of the infrared elements, the positions of the touch points can be determined, so that the touch areas are not limited by the other three borders of planes and matrixes determined by four edges of quadrangles, and the touch area range at least can be expanded on the space.
Description
Technical field
The present invention relates to technical field of touch control, more particularly, to a kind of monolateral infrared contactor control device, touch control identification method and dress
Put.
Background technology
Touch screen is an electronic system that the presence of touch point and touch point position in viewing area can be detected,
It simplifies man-machine interaction method；In current touch technology, infrared touch technology has that environmental suitability is strong, the life-span is longer, can
Identification touches the advantages such as more of counting and is widely used.
In the prior art, the basic structure of infrared touch panel is to be provided with some transmittings in the surrounding touching detection zone
Element and infrared receiver component, wherein infrared emission component and infrared receiver component correspond, and it is right that composition infrared emission receives,
The infrared light that infrared emission component sends is received by the infrared receiver component positioned at opposite；Can be true according to whether infrared light is blocked
The fixed position whether touch event and touch point occur.The structure of the infrared touch frame in Fig. 1 correlation technique mid-infrared touch screen
Schematic diagram.As shown in figure 1, the infrared transmitting tube 101 in infrared touch frame is evenly distributed on two adjacent sides of display screen
Side, infrared receiving tube 102 is evenly distributed on the adjacent side of another two of display screen.During infrared touch frame work, infrared
Penetrate pipe 101 and send infrared ray to infrared receiving tube 102 in real time, the infrared ray of two groups of intersections forms infrared light net.When user touches
During display screen, the infrared ray formation to relevant position is blocked, and MCU touches position according to the ultrared change receiving to user
Put and positioned.
Fig. 2 is the structural representation of the infrared touch-control system in Fig. 1 mid-infrared touch screen.As shown in Fig. 2 this infrared touch-control
System 200 includes：Infrared touch-control system includes MCU201, transmitting scanning circuit 202, receives scanning circuit 203, infrared transmitting tube
Matrix 204, infrared receiving tube matrix 205 and sample circuit 206.
Wherein, transmitting scanning circuit 202 is connected with MCU201, for driving infrared transmitting tube square under the control of MCU201
Infrared transmitting tube transmitting infrared ray in battle array 204；Receive scanning circuit 203 to be connected with MCU201, for the control in MCU201
The lower infrared receiving tube receiving infrared-ray driving in infrared receiving tube matrix 205；Sample circuit 206 respectively with infrared receiving tube square
Battle array 205 and MCU201 connection, under the control of MCU201, according to prefixed time interval to infrared receiving tube matrix 205
In the infrared ray that receives sampled, and sampled signal be sent to MCU201 determine whether to receive user for MCU201
Touch control operation to be controlled accordingly to television set when receiving the touch control operation of user.
In addition, above-mentioned transmitting scanning circuit 202 and infrared transmitting tube matrix 204 can also be referred to as infrared touch-control transmitting electricity
Road, receives scanning circuit 203 and infrared receiving tube matrix 205 is referred to as infrared touch-control receiving circuit.
Correlation technique in fig. 1 and 2, its four while setting transmitting or receive infrared components formed four while touch control manner red
Outer touch screen, inventor finds that its touch area is limited to the formation rectangle plane of four side touch frame, and at least existing cannot be vertical
Body spatially realizes the defect of touch controllable function.
Content of the invention
The present patent application provides a kind of new monolateral infrared touch control method and infrared touch control method and infrared contactor control device.
In a first aspect, the monolateral infrared contactor control device of one kind provided herein, described monolateral infrared contactor control device includes：?
On one direction side, multiple infrared components are set, wherein, the plurality of infrared components include spaced infrared emission component and
Infrared receiver component, determines a light path on the basis of the central ray that each infrared emission component launches infrared beam, wherein,
Multiple infrared emission components determine a plurality of parallel light path；The central ray that each infrared receiver component can receive Infrared is base
Accurately determine at least one light path, wherein, multiple infrared receiver components determine a plurality of parallel light path；Wherein, according to described infrared
Penetrate the position that intersection point between the light path that element and described infrared receiver component determine respectively determines touch point.
Optionally, a plurality of parallel light path being determined by described infrared emission component is hung down with described infrared components place direction side
Directly.
Optionally, described monolateral infrared contactor control device includes control system, and this control system includes：Control unit, transmitting
Scanning circuit, reception scanning circuit, infrared emission component, infrared receiver component and sample circuit；Described transmitting scanning circuit
It is connected with described control unit, for driving described infrared emission component transmitting infrared ray under the control of described control unit；
Described reception scanning circuit is connected with described control unit, for driving described infrared receiver under the control of described control unit
Element can receiving infrared-ray；Described sample circuit is connected with described infrared receiver component and described control unit respectively, is used for
Under the control of described control unit, the Infrared receiving in described infrared receiver component is sampled, and will sample
Signal is sent to described control unit and whether there is touch point in touch-control identification range so that described control unit determines.
Optionally, described transmitting scanning circuit, specifically for, within a scan period, scanning the plurality of infrared successively
Radiated element；Described reception scanning circuit, during opening in an infrared emission component, opens the plurality of infrared
Receiving element；Described sample circuit, during opening in infrared emission component, infrared connects to the plurality of respectively
Receive element sampling；Described control unit, specifically for according to described sample circuit obtain sampled signal determine touch point exist and
Position.
Optionally, described reception scanning circuit, during opening in an infrared emission component, scanning successively is opened
Open the plurality of infrared receiver component.
Optionally, described reception scanning circuit, specifically for during an infrared emission component, the plurality of infrared connects
Receive element Grouping scan, to realize being all turned on the plurality of infrared receiver component.
Second aspect, the application also provides a kind of touch control identification method in implementing, and applies institute arbitrary in preceding claim
State in monolateral infrared contactor control device, described touch control identification method includes：Within a scan period, record infrared of Current Scan
Penetrate the primary importance of unit；During an infrared emission component is opened, according to the sampled signal note of each infrared receiver
The second position of the record powerful infrared receiver in threshold value of receiving light；According to this described primary importance determine one first effective
Light path, and at least one the second effective optical paths are determined according to the described second position；Light path according to described first effective optical path
Parameter and described at least one the second effective light path parameter determination light path intersecting point coordinates.
Optionally, in the described light path parameter according to this first effective optical path and this at least one the second effective light LUSHEN
After number determines light path intersecting point coordinate step, this touch control identification method also includes：True according to the described light path intersecting point coordinate determining
Fixed effective touch point.
Optionally, described light path parameter includes the beginning boundary position coordinateses of light path and terminates boundary position coordinate, and
The angle information of light path or the slope information of light path.
The third aspect, the application reoffers a kind of touch control identification method in implementing, and this touch control identification method includes：Step
151, within a scan period, initialize effective optical path set C；Step 152, sequentially scanned infrared radiated element, and count
I-th radiated element of device record is opened, wherein, 1<=i<=M, M represent the quantity of infrared emission component；Step 153, sequentially sentences
Break in infrared light receiving element with the presence or absence of receiving light powerful in threshold value, if so, execution step 155, if it is not, execution step 154；
Step 154, continues to scan on infrared emission component, and counter records i+1 radiated element is opened, and then, continues executing with step
Rapid 153；Step 155, records powerful j-th infrared receiver component in threshold value of receiving light, wherein, 1<=j<=N, N represent infrared
The quantity of receiving element；Step 156, i-th radiated element of record corresponding transmitting light path is effective optical path, and j-th reception
The corresponding receiving light path of element is effective optical path, then effective optical path set C effective optical path is to Jia 1.
Optionally, repeat step 151, to step 156, completes up to M infrared emission component traverse scanning；Then, according to
In this scan period, effective optical path is to the position coordinateses determining touch point respectively.
Fourth aspect, the application provides a kind of touch control identification device in implementing, and described touch control identification device includes：Infrared
Penetrate scanning recording unit, for, within a scan period, recording the primary importance of Current Scan infrared emission unit；Infrared connect
Receive scanning recording unit, during opening in an infrared emission component, according to the sampled signal of each infrared receiver
The second position of the record powerful infrared receiver in threshold value of receiving light；Effective optical path determining unit, for according to this first
Position determines first effective optical path, and determines its at least one the second effective optical path according to this second position；Light path is handed over
Point coordinates determining unit, for the light path parameter according to this first effective optical path and this at least one the second effective light path parameter
Determine light path intersecting point coordinate.
Optionally, described touch control identification device also includes：Effectively touch point determining unit 750, in order to according to the light determining
Road intersecting point coordinate determines effective touch point.
5th aspect, the application reoffers a kind of touch control identification device in implementing, and described touch control identification device includes：At least
One processor, internal memory, peripheral interface, input/output subsystem, power circuit and communication line；And described internal memory
Including operating system and touch-control recognizer, described touch-control recognizer is according to the arbitrary described touch-control identification side of preceding claim
Method generates；Described processor is structured to execute described touch-control recognizer.
6th aspect, the application provides a kind of touch control terminal equipment in implementing, and this touch control terminal equipment includes equipment body；
Described equipment body includes any of the above-described described monolateral infrared contactor control device, and any of the above-described described touch-control identification dress
Put.
Compared with prior art, the Advantageous Effects of the technical scheme that the embodiment of the present application is proposed include：
In the monolateral infrared touch scheme of one kind providing in the embodiment of the present application, wherein, in monolateral infrared contactor control device, in a side
Multiple infrared components are arranged on side, multiple infrared components include spaced infrared emission component and infrared receiver component,
One light path is determined with the central ray that each infrared emission component launches infrared beam, wherein, multiple infrared emission components are true
Fixed a plurality of parallel light path；The central ray that each infrared receiver component can receive Infrared determines at least one light path, wherein,
Multiple infrared receiver components determine a plurality of parallel light path；So, divided with described infrared receiver component with described infrared emission component
Between the light path of determination, intersection point does not determine the position of touch point, can determine that residing for touch point only with monolateral setting infrared components
Position, therefore, its touch area not by tetragon four while the plane determining and matrix other three while boundary limit, at least permissible
Spatially extend its touch area scope.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description are these
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, acceptable
Other accompanying drawings are obtained according to these accompanying drawings.
The structural representation of the infrared touch frame in Fig. 1 correlation technique mid-infrared touch screen；
Fig. 2 is the structural representation of the infrared touch-control system in Fig. 1 mid-infrared touch screen；
Fig. 3 is for providing a kind of structural representation one of monolateral infrared contactor control device in the embodiment of the present application；
Fig. 4 is for providing a kind of structural representation two of monolateral infrared contactor control device in the embodiment of the present application；
Fig. 5 a is the light schematic diagram one of monolateral infrared contactor control device in the embodiment of the present application；
Fig. 5 b is the light schematic diagram two of monolateral infrared contactor control device in the embodiment of the present application；
Fig. 5 c is the light schematic diagram three of monolateral infrared contactor control device in the embodiment of the present application；
Fig. 6 is the light schematic diagram four of monolateral infrared contactor control device in the embodiment of the present application；
Fig. 7 is the light schematic diagram five of monolateral infrared contactor control device in the embodiment of the present application；
Fig. 8 a is the light net schematic diagram receiving positive and negative angle light path in the embodiment of the present application；
Fig. 8 b is the light net schematic diagram receiving negative angle light path in the embodiment of the present application；
A kind of control system of monolateral infrared contactor control device is also provided in Fig. 9 the embodiment of the present application；
Light path schematic diagram one in Figure 10 the embodiment of the present application；
Light path schematic diagram one in Figure 11 the embodiment of the present application；
Figure 12 is for providing a kind of schematic flow sheet of touch control identification method in the embodiment of the present application；
Figure 13 is for providing a kind of schematic flow sheet of touch control identification method in the embodiment of the present application again；
Figure 14 is for providing a kind of structural representation of touch control identification device in the embodiment of the present application；
Figure 15 be the embodiment of the present invention also offer a kind of terminal unit in touch control identification device structural representation.
Specific embodiment
Purpose, technical scheme and advantage for making the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described it is clear that described embodiment is
The a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment being obtained under the premise of not making creative work, broadly falls into the scope of protection of the invention.
Some preferred versions or not preferred scheme occur in the application in concrete application scene, can each have certain
Advantage and defect, art technology can need to carry out selecting setting according to concrete application scene, and such change can't shadow
Ring the protection domain of the application.
As described in background technology, adopt four in correlation technique in setting transmitting or receive touch-control when infrared components forms four
The infrared touch screen of mode, its touch area is limited to the formation rectangle plane of four side touch frame it is impossible to expand on solid space
The defects such as exhibition touch controllable function.One kind provided herein only can achieve touch controllable function in monolateral setting infrared components, so, its
Touch area not by tetragon four while the plane determining and matrix other three while boundary limit, can spatially extend its touch
Control regional extent.
On the one hand, provide a kind of monolateral infrared contactor control device in the embodiment of the present application, Fig. 3 is for providing in the embodiment of the present application
A kind of structural representation of monolateral infrared contactor control device, as shown in figure 3, monolateral infrared contactor control device 300, sets on a direction side
Put multiple infrared components, wherein, multiple infrared components include spaced infrared emission component 301 and infrared receiver component
302.Supplementary notes, in the application all embodiments accompanying drawing, white is represented as infrared light emission element, such as：Infrared light
Transmitting tube, and black is represented as infrared light receiving element, such as：Infrared acceptor.
It should be noted that between spaced infrared emission component and infrared receiver component are not limited in Fig. 3 one by one
Every setting, those skilled in the art, in material elementses such as the resolution considering identification, can select according to practicing in scene
Be intervally arranged the mode of infrared emission component and infrared receiver component, in such as Fig. 4, monolateral infrared contactor control device 400, and select continuous
Two infrared emission components 401 are set, and an infrared receiver component 402 carries out interval setting, it is real that it does not affect the present invention
Existing.
In the embodiment of the present application, in order to only in the touch scheme of monolateral setting infrared transmitting tube and infrared receiving tube,
Determine that some principles to judge presence and the position of touch point to realize two lines going cross each other, therefore, a touch point needs to deposit
Identify light paths at least two, by the position to be defined as touch point for the intersection point of at least two identification light paths, just can achieve monolateral
The technical scheme of touch-control.
In the structure of monolateral infrared contactor control device of the embodiment of the present application, there are at least two to realize a touch point
Identification light path.Wherein, the light path that light determines that touch point is located is launched by infrared emission component, as shown in Figure 5 a, each
A light path, wherein, multiple infrared emission components is determined on the basis of the central ray of infrared emission component 301 transmitting infrared beam
The 301 multiple parallel light paths of determination.Wherein, each infrared emission component 301 determines a light path, and light path is this infrared emission component
The 301 transmitting overlayable regions of light an, so, fall into touch point in this region and can block this light path corresponding infrared emission unit
The light of part, is Ln by its beginning boundary, and terminates the parallel light path that border Ln+1 surrounds.In Fig. 5 a, for example：First
The light path that infrared emission component 301 determines is centered on chief ray a1, to beginning boundary L1 and the termination of both sides extension
The region that border L2 determines, so, falling into touch point in this light path can launch light by the corresponding infrared emission component of this light path
An is determining.
In the present embodiment it is preferred that a plurality of parallel light path perpendicular being determined by infrared emission component is in infrared unit
Part place direction side.The present embodiment other may performances, do not limit the only direction it is also possible under other angle directions
Parallel light path；And need further exist for illustrating, in the present embodiment practical application scene, due to infrared emission component 301
Firing angle degree design error and fabrication error, or consider that design such as needs at the factor, may there is the angle of parallelism in this plurality of parallel light path
Deviation by a small margin on degree, and without prejudice to the application realizes, and does not interfere with the real protection scope of the application.
Hand over to reduce a plurality of infrared beam with the presence of the transmitting of multiple infrared emission components 301 in touch-control identification range
Fork probability, the angle of divergence that each infrared light transmitter elements 301 launches infrared beam is as far as possible little, example, as shown in Figure 5 b,
Each infrared light transmitter elements 301 launches the serial light composition that infrared beam can essentially be that the angle of divergence is φ, in order to
Reduce the intersection of a plurality of infrared beam, to reduce the identification mistake probability of touch point position, reduce infrared beam as far as possible
Angle of divergence φ.
In the present embodiment, in order to reduce angle of divergence φ of infrared beam, can arrange in infrared light transmitter elements 301 front end
Collimation optics, so that being converged to a branch of directional light from infrared emission unit outgoing divergent rays, or, reduce infrared light and send out
Penetrate unit 301 lighting area to shield the diverging light of wide-angle, according to concrete practical application scene needs, those skilled in the art
Other possible implementations of prior art can also be selected, this is no longer going to repeat them.
Preferably, in touch-control identification range, do not deposit between the direction of the transmitting light beam of each infrared emission component 301
Intersecting.Touch-control identification range refers to the discernible regional extent of the presetting touch-control of this infrared contactor control device, people in the art
Member should may know that, the recognizable region of each infrared contactor control device is it is contemplated that for example according to design：Infrared transmitting tube
Transmitting is limited, and its discernible region is limited.
Contrary it is assumed that when intersecting occurs in transmitting light, touch point position erroneous judgement problem can be produced, as shown in Figure 5 c, the
The luminous dispersion angle that one infrared emission component 301a launches Infrared a1 is excessive, and light a1 be radiated second red
In emission element 301b respective optical path, so, actually drop in second infrared emission component 301b respective optical path and touch
Touch point A therefore, can be mistakenly considered the by control point A, and the touch point A a1 that can shut out the light makes its radiation direction change
Touch point in one infrared emission component 301a respective optical path, makes the position coordinateses of actual touch spots A judge by accident.
Certainly, in practical application, it is not excluded that there is sending out of adjacent infrared emission component in other possible performances
Penetrate light and there is probability.For example：Cross point falls into outside touch-control identification range, has no effect on the coordinate position of actual touch spots
Determine.And when cross point falls within touch-control identification range, simply make the coordinate position of touch point that some errors occur, and
Without prejudice to the application realizes, and does not interfere with the real protection scope of the application.
And in the embodiment of the present application, touch point receives light by infrared receiver component and determines at least another light path,
As shown in fig. 6, each infrared receiver component 302 can receive in the range of Infrared central ray on the basis of determine at least one
Light path, wherein, multiple infrared receiver components 302 determine multiple parallel light paths.Determine that light path is similar with infrared emission component, each
Infrared receiver component 302 determine a receiving light path, this receiving light path be this infrared receiver component 302 can receiving light beam center
Centered on light, and extend to both sides can receiving light beam cover region, this region by beginning boundary and terminate border surround flat
Row light path.
In the present embodiment practical application scene, in order to ensure two lines going cross each other determine that some principles judge that touch point exists and position
Put, meeting infrared emission component 301 and infrared receiver component 302 determines there is friendship in touch-control identification range between light path respectively
During point, ability can select the angle of preferable receiving light path by controlling the receiving angle of infrared receiver component 302 with technical staff
Degree.
Determine that transmitting light path identical is with infrared emission component 301, infrared receiver component 302 is tried one's best to control to reduce and received
The dispersion angle of light, reduces the False Rate of touch point position.In the present embodiment, in order to only receive certain angle of divergence φ model
The light enclosing, can arrange optical element in infrared light receiving unit 302 front end, so that the light that incident angle overruns is sent out
Penetrate refraction or reflection and can not enter in this infrared light receiving unit, to reach shielding large angle incidence light purpose, Yi Jigen
Need according to concrete practical application scene, those skilled in the art can also select other possible implementations of prior art, here
No longer repeat one by one.
Further, in the embodiment of the present application in other possible implementations, in order to provide monolateral infrared contactor control device
Touch-control identification range, as shown in fig. 7, each infrared receiver component 302 can receive the light of positive and negative both direction, with determine
Positive two light paths of negative angle, wherein, b1 is the reception light in square direction, and b2 is the reception light of negative direction.Fig. 8 a is to receive
The light net schematic diagram of positive and negative angle light path, and the light net schematic diagram that Fig. 8 b is reception negative angle light path, wherein, in figure dark circles
Point is discernible touch point, and comparison diagram 8a and Fig. 8 b can find, due in the light path coverage using positive and negative both direction
It is greater than a direction light path coverage, therefore, under setting equal number and spacing case, in Fig. 8 a, receive positive negative angle
The touch point identification range of light path is significantly greater than the identification range of the touch point only receiving negative angle light path in Fig. 8 b.
In the embodiment of the present application, it is applied to working method in monolateral infrared contactor control device, also provide a kind of monolateral infrared tactile
The control system of control device, as shown in figure 9, in this control system 500, including：Infrared touch-control system include control unit 501,
Transmitting scanning circuit 502, reception scanning circuit 503, infrared emission component 504, infrared receiver component 505 and sample circuit
506.
Wherein, transmitting scanning circuit 502 is connected with control unit 501, red for driving under the control of control unit 501
Infrared transmitting tube transmitting infrared ray in emission element 504；Receive scanning circuit 503 be connected with control unit 501, for
The infrared receiving tube receiving infrared-ray controlling in lower driving infrared receiver component 505 of control unit 501；506 points of sample circuit
It is not connected with infrared receiver component 505 and control unit 501, under the control of control unit 501, to infrared receiver unit
The infrared ray receiving in part 505 is sampled, and by sampled signal be sent to control unit 501 for control unit 501 true
It is scheduled in touch-control identification range and whether there is touch point, to be confirmed whether to receive the touch control operation of user.
It should be noted that above-mentioned hardware configuration be intended merely to facilitate the follow-up explanation of the embodiment of the present application and be given one
Kind of preferred embodiment, in actual applications, corresponding hardware cell can be integrated merging or decomposes further, can be real
On the basis of existing constructed effect, the change of specific hardware cell deployment can't affect the protection domain of the application.Example
As：Above-mentioned transmitting scanning circuit 502 and infrared emission component 504 can also be referred to as infrared touch-control radiating circuit, receive scanning
Circuit 503 and infrared receiver component 505 are referred to as infrared touch-control receiving circuit.
Under the cooperation of above-mentioned control system 500 controls, also provide a kind of control method of monolateral infrared contactor control device,
One scan period, scan multiple infrared emission components successively, and during plaing an infrared emission component unlatching, determine and receive
Position to the infrared receiver component of Infrared.
Wherein, scanning refers to that order opens monolateral infrared contactor control device mid-infrared element successively, and gradually unlatching one is red
External component simultaneously closes off other all infrared components.Certainly, include it should be appreciated by the person skilled in the art that scanning successively
Sequential scan mode or intervening sequences scan mode one by one, in concrete application scene, select as needed specifically according to
Secondary scan mode.And a scan period refers to, under this control system controls, go through and complete one all over all infrared emission units
Secondary scanning process required time.
Said method is embodied as by this control system 500, launches scanning circuit 502, specifically for a scanning week
In phase, scan multiple infrared emission components 504 successively；Receive scanning circuit 503, specifically for opening in an infrared emission component
During opening, open multiple infrared receiver components；Sample circuit 506, during opening in an infrared emission component, point
Other to multiple infrared receiver components sample；Control unit 501, determines specifically for obtaining sampled signal according to sample circuit 506
Touch point exists and position.
In embodiments herein, when the light intensity amplitude that arbitrary infrared receiver component of sample circuit collection receives is more than threshold
During value, you can think currently there is touch point in touch-control identification range.Further, when having touch point in touch-control identification range
In the presence of, on the one hand, during only one infrared emission component is opened, control unit can determine infrared emission by enumerator
The particular location of the concrete infrared transmitting tube opened in element, you can determine a light path that touch point is located.On the other hand, work as control
When unit processed is according to whether there is touch point to the determination of infrared receiver sampled signal in touch-control identification range, then, control
Unit processed determines concrete infrared receiving tube in the infrared receiver specifically receive Infrared according to concrete sampled signal, then
Another light path that touch point is located is in control according to the infrared receiver of this concrete determination, therefore, two light roods determining respectively
To light path intersection point, wherein, two light path position of intersecting point are position in this touch point place touch-control identification range.
In some possible implementations of application embodiment, during an infrared emission component is opened, also scan institute successively
There is infrared receiver component.As shown in Figure 10, within a scan period, when opening each infrared emission component successively, tactile when having
Control point A fall within infrared emission component 301a in the optical path, infrared to the transmitting of infrared emission component 301a in touch point A
Light is reflected, and the wherein multiple different directions of reflection light are scattered, because each infrared receiver component 302 can only receive
Determine light in light path, therefore, only parallel with the receiving light path reflection light of the scattering light of all reflections, only can be by it
In an infrared receiver component 302 receive, and the receiving angle scope of other infrared receiver components 302 limit it is impossible to receive
The Infrared being reflected.
As shown in figure 11, in the monolateral infrared contactor control device that can receive positive and negative angle light path, touch point B falls within infrared
Radiated element 301b institute in the optical path, and falls in infrared receiver component 302c positive direction light path and 302d negative direction light path,
Therefore, the light path of 301b intersects, with 302c light path, the position obtaining touch point B, is intersected equally with 302d light path with the light path of 301b
Obtain the position of touch point B.
In other possible implementations of the embodiment of the present application, when scanning successively for mitigating infrared receiver component, to scanning
The too high problem of frequency requirement, a scan period, scans multiple infrared emission components successively, and is opening an infrared emission
During element, multiple infrared receiver components can be simultaneously driven to open simultaneously.Specifically, multiple infrared receiver components can be divided into
Group, every group of mid-infrared receiving element can adopt scan mode, so, all has an infrared receiver component to open in every group of any instant
Open, during multigroup scanning simultaneously, infrared receiver component scanning speed can be improved.Relatively, under this Grouping scan mode, provide more
Many using circuit for sampling to multiple infrared receiver components of opening simultaneously simultaneously, therefore, those skilled in the art are examining
When considering concrete application scene or needing, select suitably to be embodied as scan mode, certainly, other also can be taken can to realize improving
The scanning speed mode of infrared receiver component, no longer repeats again one by one.
Compared with prior art, the Advantageous Effects of the technical scheme that the embodiment of the present application is proposed include：
In the monolateral infrared touch scheme of one kind providing in the embodiment of the present application, wherein, in monolateral infrared contactor control device, in a side
Multiple infrared components are arranged on side, multiple infrared components include spaced infrared emission component and infrared receiver component,
One light path is determined with the central ray that each infrared emission component launches infrared beam, wherein, multiple infrared emission components are true
Fixed a plurality of parallel light path；The central ray that each infrared receiver component can receive Infrared determines at least one light path, wherein,
Multiple infrared receiver components determine a plurality of parallel light path；So, divided with described infrared receiver component with described infrared emission component
Between the light path of determination, intersection point does not determine the position of touch point, can determine that residing for touch point only with monolateral setting infrared components
Position, therefore, its touch area not by tetragon four while the plane determining and matrix other three while boundary limit, at least permissible
Spatially extend its touch area scope.
On the other hand, provide a kind of touch control identification method in the embodiment of the present application, it is applied in above-mentioned monolateral infrared touch-control
In device, Figure 12 is for providing a kind of schematic flow sheet of touch control identification method, as shown in figure 12, this touch-control in the embodiment of the present application
Recognition methodss include：
In step 110, within a scan period, the primary importance of record Current Scan infrared emission unit.
In the embodiment of the present application, infrared emission unit is carried out with its unlatching of scan control successively, within a scan period,
Only one infrared emission component of any instant drives unlatching to make it launch Infrared, and control unit is scanned successively in control
Cheng Zhong, is currently driven the place particular location opening infrared emission component by internal counter record.
When there is touch point in touch-control identification region, touch point can reflect to current transmitting Infrared,
The reception light intensity that reflection light triggers infrared receiver component changes, so, by the element of the transmitting light of current record
Position determine this touch point be located transmitting light path.
In step 130, during an infrared emission component is opened, according to the sampled signal of each infrared receiver
The second position of the record powerful infrared receiver in threshold value of receiving light.
It should be noted that threshold value is used for characterizing minimum intensity of light in touch-control point reflection Infrared entrance receiving element,
During implementing, those skilled in the art can obtain each infrared receiver unit in concrete contactor control device by experiment method
The setting threshold value of part.
In the embodiment of the present application, in control infrared emission component sequentially scanning process, currently open the red of a certain determination
During emission element, by traversal, the infrared light intensity of reception of all infrared receiver components is sampled, when determining some
The sampled light of infrared receiver component powerful in threshold value, illustrate in touch-control identification range with the presence of touch point.Further, record
The particular location at the powerful infrared receiver component place in threshold value of concrete receiving light.
Specifically, it is also adopted by under the performance that sequentially scan mode is opened when infrared receiver receives, can pass through
Control unit internal counter record currently concrete scanned infrared receiving unit, now corresponds to and obtains sampled signal using circuit
When light intensity is more than threshold value, determine the position of this concrete scanned infrared receiving unit.
When under the performance starting simultaneously at according to Grouping scan mode, those skilled in the art can be single by controlling
First internal counter count and packet in corresponding employing device position it may be determined that currently concrete receiving light powerful in threshold value
Scanned infrared receiving unit particular location, will not be described in detail herein.
In step 150, first effective optical path is determined according to this primary importance, and determined according to this second position
Its at least one the second effective optical path.
When according in the presence of determining in step 130 and having touch point in touch-control identification range, and record concrete receiving light
The particular location of the powerful infrared receiver component in threshold value, in step 150, according to primary importance and preset infrared emission unit
The mapping table of the position of part and light path parameter is it may be determined that this primary importance corresponding light path parameter.
And the mapping table of the position according to the second position and preset infrared receiver component and light path parameter, can be true
Fixed this second position corresponding light path parameter.
Wherein, the mapping table of the position of infrared emission component and light path parameter, in design it is considered to infrared emission is first
The infrared light emission direction of part determines each infrared emission component corresponding light path parameter.Wherein, light path parameter includes light path
Beginning boundary position coordinateses and termination boundary position coordinate, the angle information of light path or the slope information of light path.
In step 170, the light path parameter according to this first effective optical path and this at least one the second effective light LUSHEN
Number determines light path intersecting point coordinate.
Specifically, according to effective optical path in effective optical path set C to determination light path intersecting point coordinate（I, j）, this intersecting point coordinate
（I, j）Being the coordinate of a touch point, intersecting point coordinate being stored in touch-control point set Q, in case doing effective touch-control further
Point is processed.
In the present embodiment it is preferred that after step 170 step, also including：
Step 190, the light path intersecting point coordinate according to determining determines effective touch point.
Specifically, to all touch points in touch-control point set Q, check for identical touch point, that is, x is all equal with y
Touch point, if having, deleting and repeating touch point, till no repeating a little in touch-control point set Q.As shown in fig. 11, launch
Light path all meets at same point with righting reflex light path and negative sense reflected light path, and that is, same contact is calculated twice, needs
Fall one.
Further, the application implements also to provide a kind of touch control identification method, is applied to monolateral infrared in above-described embodiment
In contactor control device, as shown in figure 13, touch control identification method step includes：
Step 151, within a scan period, initializes effective optical path set C.
In the present embodiment, in every scan cycle, effective optical path set C is zeroed out.
Step 152, sequentially scanned infrared radiated element, and counter records i-th（1<=i<=M）Individual radiated element is opened,
Wherein, M represents the quantity of infrared emission component.
In the present embodiment, when control unit controls transmitting scanning circuit that infrared emission component is scanned, count simultaneously
The digit of the infrared emission component of Current Scan recorded by device.Wherein, after a scan period terminates, this counter O reset, under
Again count again in the individual scan period.
Step 153, sequentially judge in infrared light receiving element whether there is receiving light powerful in threshold value, if so, execute step
Rapid 155, if it is not, execution step 154.
During current i-th radiated element is opened, sequentially judge whether to have in all receiving elements receiving light powerful in
Threshold value, if having, illustrates there is touch point；If no, illustrating there is not touch point.
Step 154, continues to scan on infrared emission component, and counter records i+1 radiated element is opened, and then, continues
Continuous execution step 153.
During i-th radiated element is opened, there is not touch point situation, continue to scan on next i+1 transmitting unit
Part is opened, and then, continues to carry out in step 153 receiving light intensity judgement.
Step 155, records the powerful jth in threshold value of receiving light（1<=j<=N）Individual infrared receiver component, N represents infrared and connects
Receive the quantity of element.
If there is touch point, it is more than the infrared receiver component of threshold value by light intensity under counter records.
Step 156, i-th radiated element of record corresponding transmitting light path is effective optical path, and j-th receiving element corresponds to
Receiving light path be effective optical path, then effective optical path set C increase by a pair of effective optical path.
I-th radiated element for record can determine that corresponding optical path information, and regards as effective optical path；And note
Record lower j-th receiving element and determine corresponding receiving light path signal, and regard as effective optical path.
Repeat the above steps, until all infrared emission component traverse scanning complete, identification step knot in this scan period
Bundle.
Next step, according to effective optical path in this scan period to the position coordinateses determining touch point respectively.
Based on a kind of above-mentioned touch control identification method same thought, in the embodiment of the present application, also provide a kind of touch-control identification dress
Put, if Figure 14 is for providing a kind of structural representation of touch control identification device in the embodiment of the present application, as shown in figure 14, this touch-control
Identifying device 700, including：
Infrared emission scans recording unit 710, within a scan period, the of record Current Scan infrared emission unit
One position.
Infrared receiver scans recording unit 720, during opening in infrared emission component, infrared is connect according to each
Receive the second position of the powerful infrared receiver in threshold value of sampled signal record receiving light of unit.
Effective optical path determining unit 730, for determining first effective optical path according to this primary importance, and according to this
The second position determines its at least one the second effective optical path.
Light path intersecting point coordinate determining unit 740, for the light path parameter according to this first effective optical path and this at least one
Second effective light path parameter determination light path intersecting point coordinate.
Effectively touch point determining unit 750, in order to determine effective touch point according to the light path intersecting point coordinate determining.
Figure 15 is a kind of structural representation of the touch control identification device of terminal unit of the embodiment of the present invention also offer.As figure
Shown in 15, this touch control identification device 600, its structure may include：At least one processor (processor) 601, internal memory
(memory) 602, peripheral interface (peripheral interface) 603, input/output subsystem (I/O
Subsystem) 604, power circuit 605 and communication line 606.
In fig .15, arrow represents the communication data transmission between the element that can carry out computer system, and it can
Using high-speed serial bus (high-speed serial bus), parallel bus (parallel bus), storage area network
(SAN, Storage Area Network) and/or other suitable communication technologys and realize.
Internal memory 602 may include operating system 612 and touch-control recognizer 622.For example, internal memory 602 may include at a high speed at random
Access memorizer (high-speed random access memory), disk, static RAM (SPAM), move
State random access memory (DRAM), read only memory (ROM), flash memory or non-voltile memory.Internal memory 602 can store for grasping
Make the program coding of system 612 and touch-control recognizer 622 that is to say, that may include needed for the action of touch control identification device 600
Software module, instruction set architecture or the multiple data outside it.Now, processor 601 or peripheral interface 606 etc. other
Controller can be controlled by processor 601 with the access of internal memory 602.
Peripheral interface 603 can be by the input of touch control identification device 600 and/or output ancillary equipment and processor 601
Combine with internal memory 602.And, multiple input/output ancillary equipment can be connect by input/output subsystem 604 with ancillary equipment
Mouth 606 combines.For example, input/output subsystem 604 may include display, keyboard, mouse, printer or uses as needed
In the controller that the ancillary equipment such as photographing unit, various sensor are combined with peripheral interface 603.Specifically, input/
Output subsystem 604 is included for by infrared touch-control radiating circuit and infrared touch-control receiving circuit and peripheral interface 603
The controller combining.According to another side, input/output periphery also can without input/output subsystem 604 with periphery
Equipment interface 603 combines, and that is, infrared touch-control radiating circuit and infrared touch-control receiving circuit also can be without input/output subsystems
System 604 and combine with peripheral interface 603.
Power circuit 605 can be to all or part of supply electric power of the component of terminal unit.For example, power circuit
605 may include as electric power management system, battery or the more than one power supply exchanging (AC), charging system, power failure monitor
Circuit (power failure detection circuit), power converter or inverter, power state marker character or be used for
Electric power generates, manages, other components any of distribution.
Communication line 606 can be communicated with other computer systems using at least one interface, such as with remote pilot system
System is communicated.
Processor 601 passes through to implement the software module being stored in internal memory 602 or instruction set architecture can perform touch-control identification
The several functions of device 600 and processing data.That is, processor 601 passes through to execute basic arithmetic, logic and calculating
The input/output calculation of machine system, may be configured as processing the order of computer program.
Processor 601 is structured to execute above-described embodiment touch control identification method.
The embodiment of Figure 15 is only an example of the counter infrared ray signal countermeasure set 600 of terminal unit, touch-control identification dress
Put 600 and can have following structure or configuration：Omit the partial circuit element shown in Figure 15, or be further equipped with not shown in Figure 15
Add component, or combine plural component.For example, for the computer of the communication terminal of mobile environment
In addition to component shown in except Figure 15 for the system, also can further include sensor etc., and also can wrap in communication line 606
Include the circuit of the RF communication for communication (WiFi, 6G, LTE, Bluetooth, NFC, Zigbee etc.).Can be included in
Component in counter infrared ray signal countermeasure set 600 can be becomed privileged by the more than one signal processing of inclusion or application program
The hardware of integrated circuit, software or hardware and software a combination of both and realize.
The embodiment of the present invention additionally provides a kind of touch control terminal equipment, including equipment body；Equipment body includes above-mentioned
Monolateral infrared contactor control device in embodiment, and touch control identification device in above-described embodiment.
For convenience of description, it is divided into various units to be respectively described with function when describing apparatus above.Certainly, implementing this
The function of each unit can be realized in same or multiple softwares and/or hardware during invention.
Each embodiment in this specification is all described by the way of going forward one by one, identical similar portion between each embodiment
Divide mutually referring to what each embodiment stressed is the difference with other embodiment.Especially for device or
For system embodiment, because it is substantially similar to embodiment of the method, so describing fairly simple, referring to method in place of correlation
The part of embodiment illustrates.Apparatus and system embodiment described above is only schematically, wherein as separation
The unit of part description can be or may not be physically separate, as the part that unit shows can be or
Can not be physical location, you can with positioned at a place, or can also be distributed on multiple NEs.Can be according to reality
The needing of border selects the purpose to realize this embodiment scheme for some or all of module therein.Those of ordinary skill in the art
In the case of not paying creative work, you can to understand and to implement.
The above is only the specific embodiment of the present invention it is noted that coming for those skilled in the art
Say, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (15)
1. a kind of monolateral infrared contactor control device is it is characterised in that described monolateral infrared contactor control device includes：
A direction side arranges multiple infrared components, wherein, the plurality of infrared components includes spaced infrared emission
Element and infrared receiver component, determine a light on the basis of the central ray that each infrared emission component launches infrared beam
Road, wherein, multiple infrared emission components determine a plurality of parallel light path；
Each infrared receiver component determines at least one light path on the basis of can receiving the central ray of Infrared, wherein, multiple
Infrared receiver component determines a plurality of parallel light path；
Wherein, between the light path being determined respectively according to described infrared emission component and described infrared receiver component, intersection point determines touch-control
The position of point.
2. a kind of monolateral infrared contactor control device according to claim 1 is it is characterised in that true by described infrared emission component
Fixed a plurality of parallel light path is vertical with described infrared components place direction side.
3. according to the monolateral infrared contactor control device of described one kind arbitrary in claim 1-2 it is characterised in that described monolateral infrared touch
Control device includes control system, and this control system includes：Control unit, transmitting scanning circuit, reception scanning circuit, infrared emission
Element, infrared receiver component and sample circuit；
Described transmitting scanning circuit is connected with described control unit, described infrared for driving under the control of described control unit
Radiated element launches infrared ray；
Described reception scanning circuit is connected with described control unit, described infrared for driving under the control of described control unit
Receiving element can receiving infrared-ray；
Described sample circuit is connected with described infrared receiver component and described control unit respectively, in described control unit
Control under, the Infrared receiving in described infrared receiver component is sampled, and sampled signal is sent to described
Control unit whether there is touch point so that described control unit determines in touch-control identification range.
4. a kind of monolateral infrared contactor control device according to claim 3, it is characterised in that described transmitting scanning circuit, has
Body was used within a scan period, scanned the plurality of infrared emission component successively；
Described reception scanning circuit, during opening in an infrared emission component, opens the plurality of infrared receiver
Element；
Described sample circuit, during opening in an infrared emission component, respectively to the plurality of infrared receiver unit
Part is sampled；
Specifically for obtaining sampled signal according to described sample circuit, described control unit, determines that touch point exists and position.
5. a kind of monolateral infrared contactor control device according to claim 4, it is characterised in that described reception scanning circuit, has
Body is used for during an infrared emission component is opened, and the plurality of infrared receiver component is opened in scanning successively.
6. a kind of monolateral infrared contactor control device according to claim 5, it is characterised in that described reception scanning circuit, has
Body is used for during an infrared emission component, the plurality of infrared receiver component Grouping scan, is all turned on described with realization
Multiple infrared receiver components.
7. a kind of touch control identification method, applies in arbitrary described monolateral infrared contactor control device in claim 1-6, its feature exists
In described touch control identification method includes：
Within a scan period, the primary importance of record Current Scan infrared emission unit；
During infrared emission component is opened, according to the sampled signal record receiving light of each infrared receiver powerful in
The second position of the infrared receiver of threshold value；
One the first effective optical path is determined according to this described primary importance, and determines at least one the according to the described second position
Two effective optical paths；
Light path parameter according to described first effective optical path and described at least one the second effective light path parameter determination light paths are handed over
Point coordinates.
8. according to claim 7 touch control identification method it is characterised in that in the described light path according to this first effective optical path
After parameter and this at least one the second effective light path parameter determination light path intersecting point coordinate step, this touch control identification method is also wrapped
Include：
Described light path intersecting point coordinate according to determining determines effective touch point.
9. according to the arbitrary described touch control identification method of claim 7-8 it is characterised in that described light path parameter includes rising of light path
Initial line circle position coordinateses and termination boundary position coordinate, and the angle information of light path or the slope information of light path.
10. a kind of touch control identification method is it is characterised in that this touch control identification method includes：
Step 151, within a scan period, initializes effective optical path set C；
Step 152, sequentially scanned infrared radiated element, and i-th radiated element of counter records are opened, wherein, 1<=i<=M,
M represents the quantity of infrared emission component；
Step 153, sequentially judge in infrared light receiving element whether there is receiving light powerful in threshold value, if so, execution step
155, if it is not, execution step 154；
Step 154, continues to scan on infrared emission component, and counter records i+1 radiated element is opened, and then, continues to hold
Row step 153；
Step 155, records powerful j-th infrared receiver component in threshold value of receiving light, wherein, 1<=j<=N, N represent infrared and connect
Receive the quantity of element；
Step 156, i-th radiated element of record corresponding transmitting light path is effective optical path, and j-th receiving element is corresponding connects
Receipts light path is effective optical path, then effective optical path set C effective optical path is to Jia 1.
11. touch control identification method according to claim 10 are it is characterised in that repeat step 151 is to step 156, until M
Individual infrared emission component traverse scanning completes；
Then, according to effective optical path in this scan period to the position coordinateses determining touch point respectively.
A kind of 12. touch control identification devices are it is characterised in that described touch control identification device includes：
Infrared emission scans recording unit, for, within a scan period, recording the first of Current Scan infrared emission unit
Position；
Infrared receiver scans recording unit, during opening in an infrared emission component, according to each infrared receiver
The powerful infrared receiver in threshold value of sampled signal record receiving light the second position；
Effective optical path determining unit, for determining first effective optical path according to this primary importance, and according to this second
Put its at least one the second effective optical path of determination；
Light path intersecting point coordinate determining unit, for the light path parameter according to this first effective optical path with this is at least one the second effective
Light path parameter determination light path intersecting point coordinate.
13. touch control identification devices according to claim 12 are it is characterised in that described touch control identification device also includes：
Effectively touch point determining unit, in order to determine effective touch point according to the light path intersecting point coordinate determining.
A kind of 14. touch control identification devices are it is characterised in that described touch control identification device includes：At least one processor, internal memory,
Peripheral interface, input/output subsystem, power circuit and communication line；
And described internal memory includes operating system and touch-control recognizer, described touch-control recognizer is appointed according to claim 7-11
Touch control identification method described in one generates；
Described processor is structured to execute described touch-control recognizer.
A kind of 15. touch control terminal equipment are it is characterised in that this touch control terminal equipment includes equipment body；In described equipment body
Including the arbitrary described monolateral infrared contactor control device of claim 1-6, and the arbitrary described touch-control identification of claim 12-14
Device.
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| CN201610802537.9A CN106383615B (en) | 2016-09-06 | 2016-09-06 | Unilateral infrared touch device, touch identification method and device |
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| CN201610802537.9A CN106383615B (en) | 2016-09-06 | 2016-09-06 | Unilateral infrared touch device, touch identification method and device |
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Address after: 266100 Zhuzhou Road, Laoshan District, Shandong, No. 151, No. Applicant after: Hisense Visual Technology Co., Ltd. Address before: 266100 Zhuzhou Road, Laoshan District, Shandong, No. 151, No. Applicant before: QINGDAO HISENSE ELECTRONICS Co.,Ltd. |
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