CN105975139A - Touch point extraction method, device and display equipment - Google Patents
Touch point extraction method, device and display equipment Download PDFInfo
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- CN105975139A CN105975139A CN201610312004.2A CN201610312004A CN105975139A CN 105975139 A CN105975139 A CN 105975139A CN 201610312004 A CN201610312004 A CN 201610312004A CN 105975139 A CN105975139 A CN 105975139A
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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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- Theoretical Computer Science (AREA)
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- General Physics & Mathematics (AREA)
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Abstract
The invention discloses a touch point extraction method, device and display equipment, relates to the touch control field, and aims to solve the problems in the prior art that all blocked scan optical paths participate intersection calculation, thus causing high calculating complexity; the touch point extraction method comprises the following steps: counting whether the touch zone number of the current scan period has increased or not when compared with the previous scan period; if not, determining tracking windows of the touch zones in various scan directions according to the touch zones of real touch points in the previous scan period; searching whether the tracking windows in each scan direction respectively comprise the touch zones in the current scan period or not; if yes, carrying out intersection calculation for touch zones of the current scan period in the tracking windows of each scan direction, and using the touch points caused by intersection to serve as real touch points in the current scan period. The method, device and equipment are applied to an infrared touch screen.
Description
Technical field
The present invention relates to touch-control field, particularly relate to a kind of touch point extracting method, device and show
Show equipment.
Background technology
Existing Infrared touch screen technology there are ways to extract touch point: a kind of mode be
Present scanning cycle just clears off road (horizontal optical path and vertical optical path) by what employing was blocked
Calculate candidate touch point, then to touch from these candidates according to tiltedly clearing off the situation that road is blocked
True touch point is picked out in touching a little；Another way is by the directive light path that is blocked
Carry out intersecting the candidate touch point obtaining in present scanning cycle successively, then European by calculating
The true touch point of front scan cycle is touched by distance with the candidate in present scanning cycle
Point matching obtains the true touch point in present scanning cycle.
When touch objects touches touch screen, situation about occurring most frequently is that specific multiple touch points connect
Continuous drafting touch track, accordingly, same touch point was moved between former and later two scan periods
Scope is less.But prior art in each scan period all by all scanning optical paths that are blocked
Participating in intersecting calculating and ask for true touch point, computation complexity is higher, when touch point increases
Amount of calculation is bigger.
Exemplary, illustrate as a example by above-mentioned first kind of way.Shown in reference Fig. 1,
Assume in present scanning cycle, just sweeping vertical optical path V2 and V4 and just sweeping horizontal optical path
H2 and H4 is blocked, and these four light paths carry out intersecting calculating two-by-two, obtain four candidates and touch
Touch some A, B, C and D, the most again with four tiltedly clear off road H1, H3, V1, V3 and this
Four candidate touch points carry out intersecting calculating, and obtaining wherein true touch point is A and B, deceitful point
For C and D.Prior art all carries out the scanning optical path that is blocked being similar in each scan period
Crossing calculating, computation complexity is high, therefore adds amount of calculation, especially increases when touch point
Time amount of calculation bigger.
Summary of the invention
Embodiments of the invention provide a kind of touch point extracting method, device and display device, use
Cause calculating complexity in solving all crossing calculating of scanning optical paths participation that are blocked in prior art
Spend high problem.
For reaching above-mentioned purpose, embodiments of the invention adopt the following technical scheme that
First aspect, it is provided that a kind of touch point extracting method, the method includes:
Touch area number in statistics present scanning cycle compared with front scan cycle whether
Increase；
If the touch area number in described present scanning cycle does not increases, then according to before described
The true touch point of scan cycle touch area on each scanning direction, determine described respectively
The touch area on individual scanning direction tracking window on each scanning direction described；
Search whether that the tracking window on each scanning direction described all comprises described currently to sweep
Retouch the touch area in the cycle；
If the tracking window on each scanning direction described all comprises described present scanning cycle
In touch area, then will be contained in the institute in the tracking window on each scanning direction described
State the touch area in present scanning cycle to carry out intersecting calculating, the touch point being crossed to form is made
For the true touch point in described present scanning cycle.
Second aspect, it is provided that a kind of touch point extraction element, is applied to described in first aspect
Touch point extracting method, this device includes:
Statistic unit, for adding up the touch area number in present scanning cycle and front one scan
Whether the cycle is compared increases；
Determine unit, if the touch area number in described present scanning cycle does not increases
Add, then according to the touch on each scanning direction of the true touch point of described front scan cycle
Region, determines that the touch area on each scanning direction described is on each scanning direction described
Tracking window；
Search unit, for searching whether that the tracking window on each scanning direction described all wraps
Containing the touch area in described present scanning cycle；
Computing unit, if the tracking window on each scanning direction described all comprises described
Touch area in present scanning cycle, then will be contained on each scanning direction described with
The touch area in described present scanning cycle in track window carries out intersecting calculating, by crossing shape
The touch point become is as the true touch point in described present scanning cycle.
The third aspect, it is provided that a kind of display device, including the touch point as described in second aspect
Extraction element.
Touch point extracting method, device and the display device that embodiments of the invention provide, statistics
Whether the touch area number in present scanning cycle increases compared with front scan cycle；If
Touch area number in present scanning cycle does not increases, then true according to front scan cycle
Touch area on each scanning direction, the touch point, determines the Petting Area on each scanning direction
Territory tracking window on each scanning direction；Search whether the tracking on each scanning direction
Window all comprises the touch area in present scanning cycle；If the tracking on each scanning direction
Window all comprises the touch area in present scanning cycle, then will be contained in each scanning direction
On tracking window in present scanning cycle in touch area carry out intersect calculating, will intersect
The touch point formed is as the true touch point in present scanning cycle.By in front one scan week
Tracking window is set up, due to same touch around the touch area that interim true touch point is relevant
Thing displacement within the adjacent scan period is limited, and the most same touch objects is at present scanning cycle
The associated touch region of the touch point of middle generation also can be positioned on each scanning direction above-mentioned with
In track window, be equivalent to achieve the tracking to same touch objects, so true by combining history
The true touch point in present scanning cycle is distinguished in real touch point, only with making a look up operation,
Can repeat to participate in calculating by all scanning optical paths, reduce computation complexity, especially when touching
Touch effect when counting out increase to become apparent from, solve all scanning optical paths that are blocked in prior art
Participate in intersecting calculating and cause the problem that computation complexity is high.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below by right
In embodiment or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that,
Accompanying drawing in describing below is only some embodiments of the present invention, for those of ordinary skill in the art
From the point of view of, on the premise of not paying creative work, it is also possible to obtain the attached of other according to these accompanying drawings
Figure.
Fig. 1 be prior art is blocked scanning optical path intersect calculate touch point schematic diagram；
The structural representation of a kind of display device that Fig. 2 provides for embodiments of the invention；
The flow process signal of a kind of touch point extracting method that Fig. 3 provides for embodiments of the invention
Figure；
The signal of touch area on two scanning directions that Fig. 4 provides for embodiments of the invention
Figure；
In the front scan cycle that Fig. 5 provides for embodiments of the invention, true touch point shows
It is intended to；
There is touch area in the present scanning cycle that Fig. 6 provides for embodiments of the invention
Schematic diagram；
Fig. 7 shows for the flow process of the another kind of touch point extracting method that embodiments of the invention provide
It is intended to；
The structural representation of a kind of touch point extraction element that Fig. 8 provides for embodiments of the invention
Figure.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is entered
Row clearly and completely describes, it is clear that described embodiment is only 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 are not having
Have and make the every other embodiment obtained under creative work premise, broadly fall into present invention protection
Scope.
The invention provides a kind of display device, can be the bags such as mobile phone, computer, intelligent television
Equipment containing touch screen, shown in reference Fig. 2, including: touch screen 101, touch point are extracted
Device 102.Touch screen 101 include the first transmitting side, first receive limit, the second transmitting side,
Second receives limit, and touch point extraction element 102 four edges with touch screen 101 respectively is connected.
Touch point extraction element 102 controls the first transmitting side of touch screen 101 and launches scanning signal, control
First reception limit of touch screen 101 processed receives the scanning signal launched by the first transmitting side；Control
Second transmitting side of touch screen 101 launches scanning signal, controls the second reception of touch screen 101
Limit receives the scanning signal launched by the second transmitting side.Touch point extraction element 102 is by respectively
Be blocked in scanning signal on individual direction scanning signal extraction touch area, and then extracts touch
Point.
Embodiment 1,
The invention provides a kind of touch point extracting method, be applied to the display shown in Fig. 2 and set
Standby, for purposes of illustration only, only as a example by a touch point, those skilled in the art it is contemplated that
Multiple touch points situation is equally applicable to the present invention.Shown in reference Fig. 3, touch point extraction side
Method comprises the following steps:
Touch area number in S101, statistics present scanning cycle is compared with front scan cycle
Whether increase.
Wherein, in 1 pair of n scan mode, every scanning light for each transmitting fluorescent tube
Road has different angles, we term it a scanning direction.Therefore, 1 pair of n scanning side
Formula will have n scanning direction, and each scanning direction is by one group of parallel sweep light path with slope
Composition, exemplary, as shown in Figure 2, it is right that the first transmitting side and the second transmitting side are 1
3 scan modes, the most accordingly, the first transmitting side and the second transmitting side are respectively provided with 3 and sweep
Retouch direction.
Here will be located in the transmitting fluorescent tube in the first transmitting side or the second transmitting side with a definite sequence
Each scanning direction is all launched single pass light path and is defined as a scan period, specifically
Scanning sequency do not limit, can according to launch fluorescent tube putting in order in transmitting side
Perform successively or perform at equal intervals.
For each scanning direction, correspond to one group of parallel scanning optical path, occur there being touch
Time, owing to the granularity of touch point is typically larger than the spacing of adjacent two scanning optical paths, therefore one
Touch point can block some light paths of continuous print, then this continuous print in the scanning optical path that this group is parallel
Some light paths are to should a touch area under scanning direction.Exemplary, such as Fig. 4
Shown in, it is the schematic diagram of touch area on two scanning directions, wherein, dotted line represents and is hidden
The scanning optical path of gear forms touch area, and solid line represents the border of touch area, touch area phase
Hand over and partly form touch point.Those skilled in the art is it is further envisioned that use other to scan
The mode of direction or scanning direction number is equally applicable to the present invention.
Concrete, add up the number of touch area in every scan cycle, former and later two are swept
The number retouching the touch area in the cycle contrasts.
If the touch area number in S102 present scanning cycle does not increases, then according to previous
The true touch point of scan period touch area on each scanning direction, determines that each scans
The touch area on direction tracking window on each scanning direction.
Exemplary, as a example by vertically and horizontally two scanning directions, shown in reference Fig. 5,
For the schematic diagram of true touch point in front scan cycle.Wherein, heavy line H1 and H2 institute
The part surrounded is the touch area relevant to this true touch point in horizontal scan direction, slightly
The part that solid line V1 and V2 is surrounded be on vertical scanning direction with this true touch point phase
The touch area closed, the two scanning area is crossed to form this true touch point, dotted line H3 and
This true touch point touch area in horizontal scan direction according to the part that H4 is surrounded
Tracking window determined by H1H2, according to the part that dotted line V3 and V4 is surrounded, this is true
Tracking window determined by the touch area V1V2 on vertical scanning direction of the touch point.Its
In, the speed moved due to touch objects has certain limit, the track window on the most each scanning direction
The size of mouth determines according to same touch objects displacement limit within the adjacent scan period, and
And must assure that the touch area included completely on this scanning direction.
Concrete, by the touch on each scanning direction of the true touch point of front scan cycle
Region extends fixed width according to being perpendicular to scanning direction in both sides, is formed on each scanning direction
Touch area tracking window on each scanning direction.Shown in reference Fig. 5, in figure
W1, w2, w3, w4 can represent extension same widths or different in width, it is preferred that w1,
W2, w3, w4 represent the fixed width that extension is identical.
S103, the tracking window searched whether on each scanning direction all comprise Current Scan week
Interim touch area.
Exemplary, with reference to shown in Fig. 6, in present scanning cycle, go out in the horizontal direction
Showed by solid line H5 and H6 surround touch area, and occur in that in vertical direction by
The touch area that solid line V5 and V6 surrounds.And in horizontal scan direction, solid line H5
The scanning area surrounded with H6 is contained in the tracking window that H3 and H4 is surrounded；?
On vertical scanning direction, the scanning area that solid line V5 and V6 is surrounded be contained in V3 and
In the tracking window that V4 is surrounded.
If the tracking window on each scanning direction of S104 all comprises in present scanning cycle
Touch area, then the Current Scan week in the tracking window being contained on each scanning direction
Interim touch area carries out intersecting calculating, using all as Current Scan for the touch point being crossed to form
Interim true touch point.
Exemplary, still with reference to shown in Fig. 6, meet and (vertically sweep in each scanning direction
Retouch direction and horizontal scan direction) on all have touch area to be contained in each scanning direction above-mentioned
On tracking window in, therefore by the touch area V5V6 that is contained in tracking window and
H5H6 is crossed to form touch point (the solid black circle in Fig. 6) as in present scanning cycle
True touch point.
The touch point extracting method that embodiments of the invention provide, in statistics present scanning cycle
Whether touch area number increases compared with front scan cycle；If in present scanning cycle
Touch area number does not increases, then scan at each according to the true touch point of front scan cycle
Touch area on direction, determines that the touch area on each scanning direction is in each scanning direction
On tracking window；Search whether that the tracking window on each scanning direction all comprises currently to sweep
Retouch the touch area in the cycle；Currently sweep if the tracking window on each scanning direction all comprises
Retouch the touch area in the cycle, then in the tracking window being contained on each scanning direction
Touch area in present scanning cycle carries out intersecting calculating, using the touch point that is crossed to form as
True touch point in present scanning cycle.By the true touch point in front scan cycle
Tracking window is set up, owing to same touch objects is in the adjacent scan period around relevant touch area
Interior displacement is limited, the touch point that the most same touch objects produces in present scanning cycle
Associated touch region also can be positioned at the tracking window on each scanning direction above-mentioned, is equivalent to reality
Show the tracking to same touch objects, so distinguished currently by combining history true touch point
True touch point in scan period, only with making a look up operation, it may not be necessary to all scanning light
Road repeats to participate in calculating, and reduces computation complexity, especially the effect when touch point number increases
Become apparent from, solve all crossing calculating of scanning optical paths participation that are blocked in prior art and cause meter
Calculate the problem that complexity is high.
Embodiment 2,
The invention provides another kind of touch point extracting method, be applied to the display shown in Fig. 2
Equipment, with reference to shown in Fig. 7, comprises the following steps:
S201, setting basic parameter.
Including: set scanning direction number and scanning direction；Set stand out；Set true touching
Touch a memory block for sky.
Wherein, the description in step S101 is seen in scanning direction number and scanning direction, at this no longer
Repeat.
Wherein, the stand out in basic parameter represents each scanning as described in step S101
Tracking window on direction is relative to the stand out of side, touch area.
Wherein, in true touch point memory block, store the actual touch in front scan cycle
The relevant touch on each scanning direction of the true touch point in point and front scan cycle
Region, this memory block is empty in an initial condition.And it is true whenever complete in present scanning cycle
After real touch point is extracted, all can be by the true touch point in present scanning cycle and Current Scan
The true touch point in cycle associated touch region on each scanning direction stores this and deposits
In storage area, extract touch point for lower scan cycle.
S202, perform the scanning of each scanning direction of present scanning cycle and extract Current Scan
The touch area of each scanning direction in cycle.
The determination mode of concrete touch area is shown in step S101, does not repeats them here.
If S203 present scanning cycle is first scan period, then carry out step S210,
Otherwise carry out step S204.
Touch area number in S204, statistics present scanning cycle is compared with front scan cycle
Whether increase, if not increasing, carrying out step S205, otherwise carrying out step S210.
This step is identical with step S101, does not repeats them here.
If the touch area number in S205 present scanning cycle does not increases, then according to previous
The true touch point of scan period touch area on each scanning direction, determines that each scans
The touch area on direction tracking window on each scanning direction.
This step is identical with step S101, does not repeats them here.
S206, the tracking window searched whether on each scanning direction all comprise Current Scan week
Interim touch area.It is to carry out step S207, otherwise carry out step S210.
Concrete, according to each scanning direction in the present scanning cycle obtained in step S202
Touch area, therefrom search whether that touch area is contained in and step S205 obtain
In tracking window on each scanning direction.This step is identical with step S103.At this no longer
Repeat.
When situation about cannot find occurs, for the situation of new touch point occurs, therefore carry out
Step S210 extracts actual touch according to actual touch point extracting method of the prior art
Point.
If the tracking window on each scanning direction of S207 all comprises in present scanning cycle
Touch area, then the Current Scan week in the tracking window being contained on each scanning direction
Interim touch area carries out intersecting calculating, using all as Current Scan for the touch point being crossed to form
Interim true touch point.
This step is identical with S104, does not repeats them here.
S208, the most still have the touch area in present scanning cycle be not contained in above-mentioned each
In tracking window on scanning direction.It is to carry out step S209, otherwise carry out step S210.
S209, method according to prior art, by be not contained on each scanning direction with
The touch area in present scanning cycle in track window carries out intersecting calculating, to judge currently to sweep
Retouch in the cycle and whether there is also true touch point.Jump to step S211.
S210, according to the method extracting true touch point in prior art, by present scanning cycle
In all touch areas carry out intersecting calculating, using the touch point that is crossed to form as described currently
True touch point in scan period.
All true touch points in S211, storage present scanning cycle and present scanning cycle
In all true touch points associated touch region on each scanning direction.
Concrete storage is in true touch point memory block.
Whether S212, scanning terminate, and are to terminate, otherwise carry out step S202.
The touch point extracting method that embodiments of the invention provide, by step S201, setting
Basic parameter；S202, the scanning performing each scanning direction of present scanning cycle extraction are worked as
The touch area of each scanning direction in the front scan period；If S203 present scanning cycle is
First scan period, then carry out step S210, otherwise carry out step S204；S204, system
Whether the touch area number in meter present scanning cycle increases compared with front scan cycle, as
Fruit does not increases, and carries out step S205, otherwise carries out step S210；If S205 currently sweeps
The touch area number retouched in the cycle does not increases, then according to the true touch point of front scan cycle
Touch area on each scanning direction, determines that the touch area on each scanning direction is respectively
Tracking window on individual scanning direction；S206, the tracking searched whether on each scanning direction
Window all comprises the touch area in present scanning cycle.It is to carry out step S207, otherwise
Carry out step S210；If the tracking window on each scanning direction of S207 all comprises currently
Touch area in scan period, then in the tracking window being contained on each scanning direction
Present scanning cycle in touch area carry out intersecting calculating, the touch point that be crossed to form is made
For the true touch point in present scanning cycle；S208, the most still have in present scanning cycle
Touch area is not contained in the tracking window on each scanning direction above-mentioned.It is to walk
Rapid S209, otherwise carries out step S210；S209, method according to prior art, will not by
It is contained in the touch area in the present scanning cycle in the tracking window on each scanning direction
Carry out intersecting calculating, to judge whether present scanning cycle there is also true touch point.Redirect
To step S211；S210, according to the method extracting true touch point in prior art, ought
All touch areas in the front scan period carry out intersecting calculating, are made the touch point being crossed to form
For the true touch point in described present scanning cycle；In S211, storage present scanning cycle
All true touch points in all true touch points and present scanning cycle scan at each
Associated touch region on direction；Whether S212, scanning terminate, and are to terminate, otherwise carry out
Step S202.The touch that the present invention is correlated with by the true touch point in front scan cycle
Tracking window is set up, due to same touch objects displacement within the adjacent scan period around region
Limited, the associated touch district of the touch point that the most same touch objects produces in present scanning cycle
Territory also can be positioned at the tracking window on each scanning direction above-mentioned, is equivalent to achieve same
The tracking of touch objects, so distinguishes in present scanning cycle by combining history true touch point
True touch point, only with making a look up operation, it may not be necessary to all scanning optical paths repeat participation
Calculating, reduce computation complexity, especially when touch point number increases, effect becomes apparent from, and solves
In prior art of having determined, all scanning optical paths participations that are blocked are intersected calculating and are caused computation complexity
High problem.
Embodiment 3,
The invention provides a kind of touch point extraction element, be applied to described in Fig. 3 or Fig. 7
Touch point extracting method, and as the touch point extraction element described in Fig. 1.With reference to Fig. 8
Shown in, touch point extraction element includes:
Statistic unit 801, for adding up the touch area number in present scanning cycle with previous
Whether the scan period is compared increases；
Determine unit 802, if the touch area number in described present scanning cycle is not
Increase, then according to true touch point the touching on each scanning direction of described front scan cycle
Touch region, determine that the touch area on each scanning direction described is on each scanning direction described
Tracking window；
Search unit 803, for searching whether the tracking window on each scanning direction described
All comprise the touch area in described present scanning cycle；
Computing unit 804, if the tracking window on each scanning direction described all comprises
Touch area in described present scanning cycle, then will be contained on each scanning direction described
Tracking window in described present scanning cycle in touch area carry out intersect calculating, by phase
Hand over the touch point formed as the true touch point in described present scanning cycle.
Optionally, it is provided that a kind of implementation, computing unit 804 is additionally operable to:
If the touch area number in described present scanning cycle increases, then currently sweep described
Retouch all touch areas in the cycle to carry out intersecting calculating, using the touch point that is crossed to form as institute
State the true touch point in present scanning cycle.
Optionally, it is provided that a kind of implementation, computing unit 804 is additionally operable to:
To not be contained in the tracking window on each scanning direction described described currently sweeps
Retouch the touch area in the cycle to carry out intersecting calculating, to judge in described present scanning cycle to be
No there is also true touch point.
Optionally, it is provided that a kind of implementation, determine unit 802 specifically for:
The true touch point of front scan cycle touch area on each scanning direction is pressed
Extend fixed width in both sides according to being perpendicular to scanning direction, formed on each scanning direction described
Touch area tracking window on each scanning direction described.
Owing to the touch point extraction element in the embodiment of the present invention may be used for performing said method
Flow process, therefore, it can be obtained with technique effect and also refers to said method embodiment, this
Bright embodiment does not repeats them here.
Should be understood that in various embodiments of the present invention, the size of the sequence number of above-mentioned each process is also
Not meaning that the priority of execution sequence, the execution sequence of each process should be with its function and internal logic
Determine, and the implementation process of the embodiment of the present invention should not constituted any restriction.
Those of ordinary skill in the art are it is to be appreciated that combine the embodiments described herein and retouch
The unit of each example stated and algorithm steps, it is possible to electronic hardware or computer software and
Being implemented in combination in of electronic hardware.These functions perform with hardware or software mode actually,
Depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can be to often
Individual specifically should being used for uses different methods to realize described function, but this realization is not
It is considered as beyond the scope of this invention.
Those skilled in the art is it can be understood that arrive, for convenience and simplicity of description,
The specific works process of the system of foregoing description, device and unit, is referred to preceding method real
Execute the corresponding process in example, do not repeat them here.
In several embodiments provided herein, it should be understood that disclosed system,
Equipment and method, can realize by another way.Such as, equipment described above is real
Executing example is only schematically, such as, the division of described unit, it is only a kind of logic function
Dividing, actual can have other dividing mode when realizing, and the most multiple unit or assembly are permissible
In conjunction with or be desirably integrated into another system, or some features can be ignored, or does not performs.
Another point, shown or discussed coupling each other or direct-coupling or communicate to connect permissible
It is the INDIRECT COUPLING by some interfaces, equipment or unit or communication connection, can be electrical,
Machinery or other form.
The described unit that illustrates as separating component can be or may not be and physically divide
Opening, the parts shown as unit can be or may not be physical location, the most permissible
It is positioned at a place, or can also be distributed on multiple NE.Can be according to reality
Need to select some or all of unit therein to realize the purpose of the present embodiment scheme.
It addition, each functional unit in each embodiment of the present invention can be integrated in a process
In unit, it is also possible to be that unit is individually physically present, it is also possible to two or more are single
Unit is integrated in a unit.
If described function realizes and as independent product pin using the form of SFU software functional unit
When selling or use, can be stored in a computer read/write memory medium.Based on such
Understand, part that prior art is contributed by technical scheme the most in other words or
The part of this technical scheme of person can embody with the form of software product, this computer software
Product is stored in a storage medium, including some instructions with so that a computer equipment
(can be personal computer, server, or the network equipment etc.) performs the present invention, and each is real
Execute all or part of step of method described in example.And aforesaid storage medium includes: USB flash disk, shifting
Dynamic hard disk, read only memory (English full name: read-only memory, English abbreviation: ROM),
Random access memory (English full name: random access memory, English abbreviation:
RAM), the various medium that can store program code such as magnetic disc or CD.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is also
Being not limited to this, any those familiar with the art is at the technology model that the invention discloses
In enclosing, change can be readily occurred in or replace, all should contain within protection scope of the present invention.
Therefore, protection scope of the present invention should be as the criterion with described scope of the claims.
Claims (9)
1. a touch point extracting method, it is characterised in that including:
Whether the touch area number in statistics present scanning cycle increases compared with front scan cycle
Add；
If the touch area number in described present scanning cycle does not increases, then according to before described
The true touch point of scan cycle touch area on each scanning direction, determine described respectively
The touch area on individual scanning direction tracking window on each scanning direction described；
Search whether that the tracking window on each scanning direction described all comprises described Current Scan
Touch area in cycle；
If the tracking window on each scanning direction described all comprises in described present scanning cycle
Touch area, then will be contained in described in the tracking window on each scanning direction described
Touch area in present scanning cycle carries out intersecting calculating, using the touch point that is crossed to form as
True touch point in described present scanning cycle.
Touch point the most according to claim 1 extracting method, it is characterised in that described side
Method also includes:
If the touch area number in described present scanning cycle increases, then currently sweep described
Retouch all touch areas in the cycle to carry out intersecting calculating, using the touch point that is crossed to form as institute
State the true touch point in present scanning cycle.
Touch point the most according to claim 1 extracting method, it is characterised in that described side
Method also includes:
Described Current Scan in the tracking window that will be contained on each scanning direction described
Whether the touch area in the cycle carries out intersecting calculating, to judge in described present scanning cycle
There is also true touch point.
Touch point the most according to claim 1 extracting method, it is characterised in that described
According to the true touch point of the front scan cycle touch area on each scanning direction, determine institute
State the tracking window on each scanning direction described of the touch area on each scanning direction, bag
Include:
By the true touch point of front scan cycle touch area on each scanning direction according to
It is perpendicular to scanning direction and extends fixed width in both sides, form touching on each scanning direction described
Touch region tracking window on each scanning direction described.
5. a touch point extraction element, it is characterised in that including:
Statistic unit, for adding up the touch area number in present scanning cycle and front one scan
Whether the cycle is compared increases；
Determine unit, if the touch area number in described present scanning cycle does not increases,
Then according to Petting Area on each scanning direction of the true touch point of described front scan cycle
Territory, determine the touch area on each scanning direction described on each scanning direction described with
Track window；
Search unit, for searching whether that the tracking window on each scanning direction described all wraps
Containing the touch area in described present scanning cycle；
Computing unit, if the tracking window on each scanning direction described all comprises described
Touch area in present scanning cycle, then will be contained on each scanning direction described with
The touch area in described present scanning cycle in track window carries out intersecting calculating, by crossing shape
The touch point become is as the true touch point in described present scanning cycle.
Touch point the most according to claim 5 extraction element, it is characterised in that described meter
Calculation unit is additionally operable to:
If the touch area number in described present scanning cycle increases, then currently sweep described
Retouch all touch areas in the cycle to carry out intersecting calculating, using the touch point that is crossed to form as institute
State the true touch point in present scanning cycle.
Touch point the most according to claim 5 extraction element, it is characterised in that described meter
Calculation unit is additionally operable to:
Described Current Scan in the tracking window that will be contained on each scanning direction described
Whether the touch area in the cycle carries out intersecting calculating, to judge in described present scanning cycle
There is also true touch point.
Touch point the most according to claim 5 extraction element, it is characterised in that described really
Cell specifically for:
By the true touch point of front scan cycle touch area on each scanning direction according to
It is perpendicular to scanning direction and extends fixed width in both sides, form touching on each scanning direction described
Touch region tracking window on each scanning direction described.
9. a display device, carries including the touch point as according to any one of claim 5-8
Fetching is put.
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| CN105975139B (en) | 2019-09-20 |
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Address after: 266100 Zhuzhou Road, Laoshan District, Shandong, No. 151, No. Patentee after: Hisense Video Technology Co.,Ltd. Address before: 266100 Zhuzhou Road, Laoshan District, Shandong, No. 151, No. Patentee before: HISENSE ELECTRIC Co.,Ltd. |