CN104461286B - A kind of display screen suspension touch control method - Google Patents
A kind of display screen suspension touch control method Download PDFInfo
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- CN104461286B CN104461286B CN201410696969.7A CN201410696969A CN104461286B CN 104461286 B CN104461286 B CN 104461286B CN 201410696969 A CN201410696969 A CN 201410696969A CN 104461286 B CN104461286 B CN 104461286B
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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
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
- G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
- G06F3/04886—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures by partitioning the display area of the touch-screen or the surface of the digitising tablet into independently controllable areas, e.g. virtual keyboards or menus
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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
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0484—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
- G06F3/04847—Interaction techniques to control parameter settings, e.g. interaction with sliders or dials
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- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention discloses a kind of display screen suspension touch control method, it comprises the following steps：Step 1: four Angle Positions in display screen distinguish setting signal receiver；Step 2: side, corresponding four signal receiver positions select to be used as calibration point at multiple pointer locations on a display screen, coordinate of the calibration point in display plane subpoint is obtained；Step 3: the quadrangle rule that aforementioned four subpoint forms is turned into rectangle, coordinate system x ' o ' y ' are established as origin using a summit of rectangle, simple translation relation and the scaling relation in x, y direction are formed with the display plane coordinate system xoy of face correspondence establishment on the basis of display plane；Step 4: according to translation relation and pantograph ratio between two coordinate systems in step 3, the indicating positions of any pointer location within display screen in calibration range is obtained.The display screen touch control method of the present invention can realize suspension touch control, and stylus suspension distance and touch-control scope are adjustable.
Description
Technical field
A kind of relevant display screen touch control method of the present invention, particularly relate to it is a kind of using stylus demarcation realize position of touch and
The adjustable suspension touch control method of touch-control scope.
Background technology
Display device uses plane contact type touch technology more at present, but running fix precision is generally by touch-screen resolution ratio
Limitation, and such a touch technology is not suitable for super large display screen, and opereating specification and operating distance are very limited.
Mainly there are two kinds of touch control manners at present to solve the above problems, first, based between contactor control device and reception device
Signal feedback, realize the flexible free touch-control to display screen, contactor control device includes running fix device, by the position of relative movement
Confidence breath by wireless communication technology feeds back to display device, by corresponding position information process, corresponds to the phase of display screen
Position is answered, but this touch technology can only realize slip positioning；Second, the man-machine interactive system based on acquisition technology,
The current product for having had more maturation, such as Leap Motion and Kinect motion sensing control devices, but these interactive systems
Operand is generally very big, and service speed is slow, using by a definite limitation.
The content of the invention
In view of this, it is a primary object of the present invention to provide it is a kind of using stylus demarcation realize position of touch it is accurate,
And the arbitrarily adjustable display screen suspension touch control method of touch-control scope.
To reach above-mentioned purpose, the present invention provides a kind of display screen suspension touch control method, and it comprises the following steps：
Step 1: four Angle Positions in display screen distinguish setting signal receiver；
Step 2: side, corresponding four signal receiver positions are selected at multiple pointer locations as mark on a display screen
Fixed point, it is desirable to which each calibration point is more relative than the distance of the calibration point and other receivers with the distance of corresponding receiver closer to logical
Cross that each receiver receives the time difference of stylus signal and the co-ordinate position information of receiver calculates stylus and connect to four
The distance of device is received, and thus calculates stylus and is sat in the space on the basis of display plane in the display plane coordinate system in face
Mark, then projected to display plane, obtain projecting point coordinates；
Step 3: the quadrangle rule that subpoint of each calibration point on display plane is formed turns to rectangle, with rectangle
A summit establish subpoint coordinate system x ' o ' y ', the display plane with the face correspondence establishment on the basis of display plane for origin
Coordinate system xoy forms simple translation relation and the scaling relation in x, y direction；
Step 4: according to translation relation and pantograph ratio between two coordinate systems in step 3, obtain in calibration range
Any pointer location indicating positions within display screen.
The step 2 specifically includes：
(2.1) side, corresponding four signal receiver positions are selected at multiple pointer locations as demarcation on a display screen
Point, it is desirable to each calibration point is closer to the distance with corresponding receiver, with the distances of other receivers relatively far away from, make stylus to
Each receiver transmission signal, and calculate the time difference for receiving signal of each receiver and nearest receiver；
(2.2) calibration point is calculated according to the above-mentioned time difference and reaches other distances of receiver and nearest receiver farther out
Difference；
(2.3) by the range difference in above-mentioned steps (2.2), calibration point is calculated with reference to the co-ordinate position information of receiver
Reach the distance L of nearest receiver；
(2.4) calibration point arrival is calculated with the distance L in step (2.3) by the range difference obtained in step (2.2) respectively to connect
Receive the distance of device；
(2.5) calibration point is projected to display plane to obtain stylus subpoint, each receiver is reached by calibration point
Distance and screen size calculate projection coordinate of the subpoint in display plane；
(2.6) repeat step (2.1) to (2.5), projection coordinate of four calibration points in the subpoint of display plane is obtained.
In the step 3, the quadrangle rule that subpoint of each calibration point on display plane is formed is turned into square
Shape, it is desirable to which each edge of rectangle is by the midpoint on corresponding quadrangle side, and parallel to the side of corresponding display screen, then with square
One summit of shape is that origin establishes subpoint coordinate system, according to coordinate of the origin of this coordinate system in display plane coordinate system
The translation relation between display plane coordinate system and subpoint coordinate system is obtained, and according to the length of display plane and regularization rectangle
Pantograph ratio of the width than drawing display plane and regularization rectangle.
The step 4 specifically includes：
Pointer location S in calibration range obtains projection coordinates of the subpoint S ' in coordinate system xoy by first projecting
(xs,ys), coordinates of the subpoint S ' in coordinate system x ' o ' y ' is obtained according to the translation relation between coordinate system x ' o ' y ' and xoy
(x’s,y’s), and pointer location S is obtained within display screen according to the pantograph ratio of regularization rectangle and display plane size
Actual indicating positions S ".
The number of calibration point is at least four in the step 2, to establish subpoint coordinate system and projection rectangle model
Enclose.
In step (2.2), the signal reach difference of each receiver and nearest receiver is d1, d2, d3, step
(2.3) calibration point described in reaches the distance L=(d1 of nearest receiver2+d32-d22)/2 (d2-d1-d3), in step (2.4)
The distance that the calibration point reaches each receiver is [L, L+d1, L+d2, L+d3].
The display screen suspension touch control method of the present invention can realize suspension touch control, and stylus suspends apart from adjustable；Simultaneously
Signal one-way transmission, it is simple in construction without reponse system；Touch-control range size, which can be used, demarcates any regulation, and suitable for appointing
The screen of what size；The running fix precision of the present invention is up to display screen matrix rank.
Brief description of the drawings
Fig. 1 is the implementation state diagram of display screen suspension touch control method of the present invention；
Fig. 2 is the demarcation schematic diagram of display screen suspension touch control method of the present invention；
Fig. 3 is the range difference schematic diagram calculation of display screen suspension touch control method of the present invention；
Fig. 4 is the step flow chart of display screen suspension touch control method of the present invention；
Fig. 5 is the calculating process schematic diagram of display screen suspension touch control method of the present invention.
Embodiment
There is further understanding for ease of the method to the present invention and the effect that reaches, developed simultaneously preferable implementation in conjunction with accompanying drawing
Example describes in detail as follows.
As shown in figure 1, A/B/C/D is respectively signal receiver 1/2/3/4；E is display screen；F is that stylus is signal hair
Emitter.The display screen suspension touch control method of the present invention is set respectively in four Angle Positions of display screen first in implementation process
Signal receiver (hereinafter referred to as receiver), such as receiver 1, receiver 2, receiver 3 and receiver 4, stylus is as signal
Generator, launch the signal pulse of specific frequency, the time difference that identical pulse signal is then received using four receivers is counted
Calculate the embodiment that stylus calculates to the range difference of each receiver, range difference：Stylus (signal generator) is allowed with fixation
Frequency emissioning signal pulse (each pulse can be multiple wavelength), such as ultrasonic pulse, four receiver records receive every
The time of individual signal pulse, and the pulse to receiving counts, and it is identical then to compare the counting that four receivers receive
Pulse time, the spread speed of binding signal can calculate trigger point to nearest receiver and other three receivers
Range difference, as shown in Fig. 2 the counting number (including pulse recording time and step-by-step counting) that other four receiver retains needs basis
Ultimate range poor (display screen diagonal distance) calculates, and counts number numerical value and is more than or equal to ultimate range difference divided by pulse length
Quotient, to ensure that four receivers can find corresponding pulse, realize the relative synchronization detection of four receivers.
With reference to Fig. 2 to Fig. 4, select certain point 1 in Fig. 2 above display screen as stylus a certain position of reality (i.e.
Calibration point), while selected receiver 1 receives counting phase as with 1 immediate receiver of pointer location, four receivers
With time of pulse be respectively T1, T2, T3, T4, four receivers, which receive, to be counted time difference of identical pulse signal and is
△Ti=Ti-min{T1,T2,T3,T4, wherein i=1,2,3,4, signal receiver numbering is represented, obtains each receiver with most connecing
The signal arrival time difference of near receiver 1：[0,△T2,△T3,△T4], wherein △ T2For receiver 2 and the letter of receiver 1
Number reaching time-difference, △ T3For receiver 3 and the signal arrival time difference of receiver 1, △ T4For receiver 4 and the letter of receiver 1
Number reaching time-difference；Assuming that the speed of sound wave is v, pointer location 1 is calculated to respectively connecing using the time difference and SVEL
Receive device and the air line distance closest to receiver is poor：v×[0,△T2,△T3,△T4]=[0, d1, d2, d3], wherein d1 is tactile
A position 1 is controlled to arrive for pointer location 1 to the difference of the distance and the distance of pointer location 1 to receiver 1 of receiver 2, d2
The difference of the distance of receiver 3 and the distance of pointer location 1 to receiver 1, d3 be pointer location 1 to receiver 4 away from
From with the difference with a distance from pointer location 1 to receiver 1, these calculated reflect stylus and display apart from difference data
Shield the relative position information of four angle points；Cartesian coordinates xoy (i.e. display plane coordinates are established in face on the basis of display plane
System, is used as rectangular coordinate system origin using the angle point of receiver 2 as shown in Figure 2), the then straight line by stylus to each receiver
Pointer location 1, which is calculated, apart from the co-ordinate position information or screen size information of difference data and receiver reaches immediate connect
Receive the distance of device 1：L=(d12+d32-d22)/2(d2-d1-d3)；The distance that then pointer location 1 reaches each receiver is：[L,
L+d1, L+d2, L+d3], and thus calculate space coordinates of the pointer location 1 in this coordinate system；Pointer location 1 again to
Display plane is projected to obtain stylus subpoint 1 ', and the distance of each receiver is reached by pointer location 1 and can obtain touch-control
The projection coordinate (x1, y1) of subpoint 1 ' in display plane.
It is same as above, as shown in Fig. 2 reality a certain position of the certain point 2 as stylus above display screen is selected again,
Simultaneously selected receiver 2 as with 2 immediate receiver of pointer location, select receiver 3 as with pointer location 3 most
Close receiver, select receiver 4 as with 4 immediate receiver of pointer location, repeat the above steps, respectively obtain
Pointer location 2 the projection coordinate (x2, y2) of the subpoint 2 ' of display plane, pointer location 3 display plane projection
Point 3 ' projection coordinate (x3, y3), pointer location 4 the subpoint 4 ' of display plane projection coordinate (x4, y4), such four
Individual calibration point will obtain four projection point coordinates；Four subpoint rules are turned into rectangle, four apex coordinates of rectangle can
To be obtained using consecutive points average computation, be respectively ((x1+x4)/2, (y1+y2)/2), ((x2+x3)/2, (y1+y2)/2),
((x2+x3)/2, (y3+y4)/2), ((x1+x4)/2, (y3+y4)/2), it is and is built using wherein second rectangle summit as origin
Vertical coordinate system x ' o ' y ' (i.e. subpoint matrix coordinate system)；Establish corresponding between coordinate system x ' o ' y ' and display screen coordinate system xoy
Translation relation and projection dot matrix and screen size pantograph ratio；Hereafter the pointer location S in calibration range passes through
First projection obtains projection coordinate (xs of the subpoint S ' in coordinate system xoys,ys), according to the translation between coordinate system x ' o ' y ' and xoy
Relation obtains coordinate (xs ' of the subpoint S ' in coordinate system x ' o ' y 's,y’s), and according to the contracting of projection dot matrix and screen size
Put and obtain actual indicating positions Ss " of the pointer location S in display screen than mapping.
With reference to shown in Fig. 5, the calculating process schematic diagram of display screen suspension touch control method of the present invention, wherein four calibration points arrive
Range difference matrix up to four angle points of display screen is
Represent a calibration point to each range difference of four receivers per a line；Calibration point to the nearest angle point of display screen (i.e.
Four calibration points arrive each receiver nearest therewith respectively) distance matrix be
Each calibration point is obtained to the distance matrix of display screen angle point by above-mentioned two matrix computations
Each of which row represents a calibration point to the distance of four display screen angle points.Calculate calibration point and correspond to subpoint
1 ', 2 ', 3 ', 4 ' projection coordinate, and rectangle is turned to through subpoint rule, a width of L' × W' of length of the subpoint rectangle, display
A width of L × the W of length of screen, the length and width pantograph ratio for drawing subpoint rectangle and display screen is (a, b)=(L/L', W/W'), together
When display plane coordinate system and subpoint obtained according to coordinate of the origin of subpoint coordinate system in display plane coordinate system sat
Translation relation between mark system.Projection coordinates of the pointer location S subpoints S ' in display plane coordinate system is calculated, and according to throwing
Shadow point rectangular co-ordinate obtains with the translation relation and subpoint rectangle of display plane coordinate system and the length and width pantograph ratio of display screen
To pointer location S display screen indicating positions S ".
Calibration point in the present invention is not limited to four in embodiment, or three or other are multiple.
The display screen suspension touch control method of the present invention can realize suspension touch control, and stylus suspends apart from adjustable；Simultaneously
Signal one-way transmission, it is simple in construction without reponse system；Touch-control range size, which can be used, demarcates any regulation, and suitable for appointing
The screen of what size；The running fix precision of the present invention is up to display screen matrix rank.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (5)
- A kind of 1. display screen suspension touch control method, it is characterised in that it comprises the following steps：Step 1: four Angle Positions in display screen distinguish setting signal receiver；Step 2: side, corresponding four signal receiver positions select to be used as calibration point at multiple pointer locations on a display screen, It is required that each calibration point is more relative than the distance of the calibration point and other receivers with the distance of corresponding receiver closer to by respectively connecing Receive that device receives the time difference of stylus signal and the co-ordinate position information of receiver calculates stylus to four receivers Distance, and stylus is thus calculated in the space coordinates on the basis of display plane in the display plane coordinate system in face, then to Display plane is projected, and obtains projecting point coordinates；Step 3: the quadrangle rule that subpoint of each calibration point on display plane is formed turns to rectangle, it is desirable to rectangle Each edge is by the midpoint on corresponding quadrangle side, and parallel to the side of corresponding display screen, then with a summit of rectangle Subpoint coordinate system x ' o ' y ' are established for origin, are shown according to coordinate of the origin of this coordinate system in display plane coordinate system Show the translation relation between plane coordinate system and subpoint coordinate system, and obtained according to the length-width ratio of display plane and regularization rectangle Go out the pantograph ratio of display plane and regularization rectangle, so that subpoint coordinate system x ' o ' y ' on the basis of display plane with facing The display plane coordinate system xoy that should be established forms simple translation relation and the scaling relation in x, y direction；Step 4: according to translation relation and pantograph ratio between two coordinate systems in step 3, appointing in calibration range is obtained The indicating positions of one pointer location within display screen.
- 2. display screen suspension touch control method as claimed in claim 1, it is characterised in that the step 2 specifically includes：(2.1) side, corresponding four signal receiver positions select to be used as calibration point at multiple pointer locations on a display screen, The closer to the distance of each calibration point and corresponding receiver is asked, with the distances of other receivers relatively far away from, makes stylus to respectively connecing Device transmission signal is received, and calculates the time difference for receiving signal of each receiver and nearest receiver；(2.2) calibration point is calculated according to the above-mentioned time difference and reaches other range differences of receiver and nearest receiver farther out；(2.3) by the range difference in above-mentioned steps (2.2), calibration point arrival is calculated with reference to the co-ordinate position information of receiver The distance L of nearest receiver；(2.4) calculate calibration point with the distance L in step (2.3) by the range difference obtained in step (2.2) and reach each receiver Distance；(2.5) calibration point is projected to display plane to obtain stylus subpoint, by calibration point reach each receiver away from Projection coordinate of the subpoint in display plane is calculated from screen size；(2.6) repeat step (2.1) to (2.5), projection coordinate of four calibration points in the subpoint of display plane is obtained.
- 3. display screen suspension touch control method as claimed in claim 1, it is characterised in that the step 4 specifically includes：Pointer location S in calibration range obtains projection coordinate (xs of the subpoint S ' in coordinate system xoy by first projectings, ys), coordinate (xs ' of the subpoint S ' in coordinate system x ' o ' y ' is obtained according to the translation relation between coordinate system x ' o ' y ' and xoys, y’s), and the reality of pointer location S within display screen is obtained according to the pantograph ratio of regularization rectangle and display plane size Indicating positions S ".
- 4. display screen suspension touch control method as claimed in claim 1, it is characterised in that the number of calibration point in the step 2 For at least four, to establish subpoint coordinate system and projection rectangle scope.
- 5. display screen suspension touch control method as claimed in claim 2, it is characterised in that in step (2.2), each receiver with The signal reach difference of nearest receiver is d1, d2, d3, and calibration point described in step (2.3) reaches nearest receiver Distance L=(d12+d32-d22)/2 (d2-d1-d3), the distance that calibration point described in step (2.4) reaches each receiver is [L, L +d1,L+d2,L+d3]。
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| CN104881192B (en) * | 2015-05-28 | 2018-11-16 | 努比亚技术有限公司 | Operate recognition methods and device and terminal |
| CN106293442B (en) * | 2015-06-11 | 2019-12-24 | 联想(北京)有限公司 | Information processing method and electronic equipment |
| WO2019113906A1 (en) * | 2017-12-14 | 2019-06-20 | 深圳市汇顶科技股份有限公司 | Method and apparatus for determining coordinates of stylus, electronic device and storage medium |
| CN113391713A (en) * | 2020-03-12 | 2021-09-14 | 北京小米移动软件有限公司 | Electronic device, control method for electronic device, and storage medium |
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| CN103593093A (en) * | 2012-08-16 | 2014-02-19 | 北京京东方光电科技有限公司 | Touch display device and touch display realization method |
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Application publication date: 20150325 Assignee: Yungu (Gu'an) Technology Co., Ltd.|Bazhou Yungu Electronic Technology Co., Ltd.|Kunshan Institute of technology new flat panel display technology center Co., Ltd Assignor: Kunshan Guo Xian Photoelectric Co., Ltd. Contract record no.: X2019990000157 Denomination of invention: Display screen suspension touch method Granted publication date: 20171219 License type: Common License Record date: 20191031 |
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Effective date of registration: 20191205 Address after: No. 2 Xiangshan Avenue, Yongning Street, Zengcheng District, Guangzhou, Guangdong province (the core of Zengcheng economic and Technological Development Zone) Patentee after: Guangzhou Guoxian Technology Co., Ltd Address before: 215300, No. 1, Longteng Road, Kunshan Development Zone, Jiangsu, Suzhou, 4 Patentee before: Kunshan Guo Xian Photoelectric Co., Ltd. |
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