CN102778976A - Method for determining position of touch point on touch screen and touch screen - Google Patents
Method for determining position of touch point on touch screen and touch screen Download PDFInfo
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- CN102778976A CN102778976A CN2012100263192A CN201210026319A CN102778976A CN 102778976 A CN102778976 A CN 102778976A CN 2012100263192 A CN2012100263192 A CN 2012100263192A CN 201210026319 A CN201210026319 A CN 201210026319A CN 102778976 A CN102778976 A CN 102778976A
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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
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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
- G06F3/0425—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means using a single imaging device like a video camera for tracking the absolute position of a single or a plurality of objects with respect to an imaged reference surface, e.g. video camera imaging a display or a projection screen, a table or a wall surface, on which a computer generated image is displayed or projected
Abstract
The invention discloses a method for determining the position of a touch point on a touch screen and the touch screen, wherein the touch screen comprises a display screen in a polygon structure, and a reflecting mirror is arranged on the inner surface of any one border of the display screen; an image acquiring unit is arranged on the point of intersection of any two borders except the border provided with the reflecting mirror; and when the display screen is touched, the position of a touch point is determined according to the imaging position of the touch point on the image acquiring unit and the imaging position of the reflecting mirror on the image acquiring unit. According to the method and the touch screen disclosed by the invention, the problem of limit on application sizes of various existing touch screen technologies can be solved, and compared with the existing double-image acquiring unit measuring system, the number of the image acquiring unit is reduced, the touch screen is in a simplified structure and is convenient to install, and the position of the image acquiring unit is easier to debug.
Description
Technical field
The present invention relates to touch screen technology, be meant touch point method for determining position and touch-screen on a kind of touch-screen especially.
Background technology
Touch-screen (Touch panel) is called contact panel again; It is the induction type liquid crystal indicator that can receive input signal such as contact; When the graphic button on the contact screen; Haptic feedback system on the screen can drive various coupling arrangements according to the formula of programming in advance, and demonstrates various information by liquid crystal display picture.
At present, touch screen technology mainly contains four kinds of schemes: resistive technologies touch-screen, capacitance technology touch-screen, surface acoustic wave technique touch-screen and noctovisor scan technology touch-screen.
Wherein, the resistive technologies touch-screen is called for short electric resistance touch screen; Develop into five wire resistive touchscreen from the four-wire ohm touch-screen, no matter be four-wire ohm touch-screen or five wire resistive touchscreen, they all are a kind of working environments of isolating fully to external world; Be not afraid of dust, steam and greasy dirt; Can touch with any object, can be used for the drawing of writing, people's use of limited quantity such as relatively be fit in industrial control field and the office.But a total shortcoming of all electric resistance touch screens is: because the skin of laminated film adopts plastic material, if when the user touches too firmly or use sharp device to touch may to scratch whole touch screen and cause it to scrap.For five wire resistive touchscreen, in service limits, scratch the outer conducting layer that only can injure touch-screen; And be that to scratch outer conducting layer be fatal to the four-wire ohm touch-screen.On the difficulty that detects, electric resistance touch screen is little to the requirement of size, but during large scale, the injury area that receives increases, and more is easy to generate problems such as scuffing.
The capacitance technology touch-screen is called for short capacitance touch screen, is four layers of compound glass screen; When the user touches capacitance plate, because the human body electric field action makes finger and workplace form a coupling capacitance; Again because be connected to high-frequency signal on the workplace; So finger can absorb a very little electric current, flow out the electrode of this electric current branch from four angles of touch-screen, four electric currents of these four electrodes of flowing through in theory are proportional with the distance of pointing four angles; Controller calculates through the precision to these four current ratios, draws touch point position.But a remarkable shortcoming of capacitance touch screen is: not reaction when touching with glove finger or hand-held nonconducting object; And the main shortcoming of capacitance touch screen is drift: when environment temperature, when humidity changes, environment of electric field changes, and can cause the drift of capacitance touch screen, and it is inaccurate to cause the touch point to calculate.When the touch-screen size was too big, current corresponding signal attenuation was comparatively serious, and was easier to receive extraneous environment temperature, humidity etc. to influence the generation drift.
The surface acoustic wave technique touch-screen is called for short acoustic wave touching screen, adopts the communications of ultrasound wave at dielectric surface; When object contacted, the energy and the shape of sound wave changed, thus position, perception touch point; In addition; The variable quantity of all right the 3rd direction of perception of surface acoustic wave can bear various high-intensity touches, is fit to the touch-screen applications in the face of the public place.But when screen size is too big,, need more high-precision test, increased cost and realized difficulty because the decay of surface acoustic wave is relatively large.
Noctovisor scan technology touch-screen is called for short infrared touch panel, utilizes the infrared ray matrix that gathers on X, the Y direction to detect the also touch of consumer positioning.Usually, infrared touch panel is installed a housing in the front of LCD, relies on the circuit board of ensconcing in the housing arrange on screen four limits infrared transmitting tube and infrared receiving tube, the corresponding one by one infrared ray matrix that intersects anyhow that forms.The user is when touch screen, and finger will block two infrared rays anyhow through this position, thereby can judge touch point position.But infrared touch panel can only bear limited light and disturb, and therefore certain restriction is arranged on environment for use.
The touch-screen of above-mentioned various technology all has certain restriction on environment for use, simultaneously, they have a common shortcoming: in the big process of touch-screen size change, it is big that the cost of manufacturing also becomes gradually, especially infrared touch panel; In addition, above-mentioned four kinds of touch-screens are when being applied to large scale, because signal is propagated decay significantly in film, cause the touch point to detect out of true, therefore are not suitable for large scale.
Prior art has also proposed charge coupled cell (Charge-coupled Device; CCD) cross measurement as a kind of contactless measurement of coordinates technology; Application the space dynamic object being carried out coordinate setting demonstrates its unique advantages, is widely used in the field of measurement such as position, size to target.At present, a kind of pair of CCD system applies arranged in the judgement of touch location, two CCD measuring systems are installed on display screen surface, and are unrestricted to display mode, all can be used in combination like display screens such as CRT, DLP, PDP, LCD.On display size, no matter the size of display size, the hardware of two CCD monitoring systems constitutes except backlight is variant; Other main functional parts does not change; Therefore size is big more, and the cost advantage of its system and succinct degree are outstanding more, are more suitable for being applied on the touch-screen of large-size.
But also there is the inferior position of its existence in two CCD system, such as owing to adopt two CCD, needs two cover signal detection systems to obtain coordinate positions, and structure is complicated, and in addition, because two CCD interact, also more complicated is debugged in the position of therefore two CCD.
Summary of the invention
In view of this, fundamental purpose of the present invention is to provide touch point method for determining position and touch-screen on a kind of touch-screen, can solve existing various touch screen technologies in the restricted problem of using size.
In order to achieve the above object, technical scheme of the present invention is achieved in that
The invention provides touch point method for determining position on a kind of touch-screen, said touch-screen comprises the display screen of polygonized structure; On the inside surface of any frame of said display screen, catoptron is set; An image acquisition units is set adjacent two frame intersection point places arbitrarily at except that the said frame that is provided with catoptron other; This method also comprises:
When touching said display screen, in the position of forming images on the image acquisition units and the position of on image acquisition units, forming images, confirm said touch point position through said catoptron according to the touch point.
The angle of forming at said adjacent two frames is provided with image acquisition units, comprising:
Aperture on the lens of the intersection point of said adjacent two frames and image acquisition units is alignd;
The intersection point of said adjacent two frames is made as initial point O, makes the frame in said adjacent two frames be positioned at the x axle, with perpendicular to the direction of x axle as the y axle; The angle of said adjacent two frames is the centre normal and the angled θ of said x axle of
said lens.Said angle θ is
This method also comprises: the infrared light transmission sheet is set on the outside surface of said lens; On the outside surface of the frame of the said x of being positioned at axle, infrared backlight source is set;
The IR that said touch point utilizes said infrared backlight source to provide is through on said image acquisition units, forming images through said infrared light transmission sheet in imaging on the said image acquisition units and after through said catoptron behind the said infrared light transmission sheet.
This method also comprises: confirm the position of forming images in said touch point on image acquisition units, comprising:
Said lens are passed through in said touch point, in the imaging surface imaging of said lens, and by the picture point on the image acquisition units chip detection imaging surface;
Said touch point is a in picture point on the imaging surface and the distance of said centre normal between the subpoint on the said imaging surface
1Said touch point and said touch point line and the angled α of said centre normal between the picture point on the imaging surface.
Confirm that said touch point through the position that said catoptron forms images, comprising on said image acquisition units:
The picture point that forms images after through said catoptron in said touch point forms images on the imaging surface of said lens through said lens, and by the picture point on the image acquisition units chip detection imaging surface;
Said touch point is a through the distance of said catoptron between picture point on the imaging surface and said subpoint
2Picture point that forms images after through said catoptron in said touch point and said touch point are through line and the said centre normal angled β of said catoptron between the picture point on the imaging surface.
Confirm said touch point (x, position y), for:
Wherein, said
Said L is the length that is positioned at the frame of x axle; Said s is the distance between said initial point O and the said subpoint.
The present invention also provides a kind of touch-screen, comprise parallelogram sturcutre display screen, be arranged on the catoptron on the inside surface of any frame of said display screen and be arranged on other image acquisition units at adjacent two frame intersection point places arbitrarily except that the said frame that is provided with catoptron;
Forming images on said image acquisition units in touch point on the said display screen, and forms images on said image acquisition units through said catoptron;
Said image acquisition units in the position of forming images on the said image acquisition units and the position of on said image acquisition units, forming images through said catoptron, is confirmed said touch point position according to said touch point.
The intersection point of said adjacent two frames aligns with aperture on the lens of said image acquisition units; The angle of said adjacent two frames is
The intersection point of said adjacent two frames is initial point O, and the frame in said adjacent two frames is positioned at the x axle, is the y axle perpendicular to the direction of x axle;
The centre normal of said lens and said adjacent two frame metas are in the angled θ of the frame of x axle; Said θ is
Said touch-screen also comprises:
Be arranged on the infrared backlight source of said adjacent two frame metas on the outside surface of the frame of x axle, the touch point that is used on the said display screen provides IR;
Be arranged on the infrared light transmission sheet on the outside surface of said lens; Be used to filter visible light; The IR that makes the touch point on the said display screen utilize said infrared backlight source to provide is through on said image acquisition units, forming images through said infrared light transmission sheet in imaging on the said image acquisition units and after through said catoptron behind the said infrared light transmission sheet.
Touch point method for determining position and touch-screen on the touch-screen of the present invention, system improves to the dual image collecting unit, only need an image acquisition units and catoptron and display screen be combined, and just can realize touch screen technology.Therefore, the present invention is based on the touch-screen of single image collecting unit, size is big more, and the cost advantage of system and succinct degree are outstanding more, are more suitable for being applied on the touch-screen of large-size.
In addition, the single image collecting unit is compared with the dual image collecting unit, has reduced image acquisition units quantity, and structure is more simplified; Easy for installation, in addition, image acquisition units measuring system only; Not influenced by other, therefore, the debugging of the position of single image collecting unit is also easier.
Description of drawings
Fig. 1 is touch point method for determining position process flow diagram on the touch-screen of the present invention;
Fig. 2 is touch point measuring principle figure of the present invention;
Fig. 3 is a quadrilateral touch screen structure synoptic diagram of the present invention;
Fig. 4 is a triangle touch screen structure synoptic diagram of the present invention;
Fig. 5 is a hexagon touch screen structure synoptic diagram of the present invention.
Description of reference numerals:
1. display screen; 2. image acquisition units; 3. catoptron; 4. frame; 5. frame; 6. frame; 7. frame; 8. lens; 9. image acquisition units chip; 10. infrared light transmission sheet; 11. infrared backlight source; 12. touch point; 12 '. picture point; 13. aperture; 14. picture point; 15. picture point; 16. the centre normal of lens; 17. subpoint.
Embodiment
The basic thought of touch-screen of the present invention and its implementation is: existing dual image collecting unit measuring system is improved, an image acquisition units detection imaging system and the display screen that is provided with a catoptron are combined to form the application system of touch-screen.So, the single image collecting unit is compared with the dual image collecting unit, and structure is more simplified, and is easy for installation, and the position debugging of single image collecting unit is also easier.
So-called image acquisition units detects imaging system and promptly is meant image acquisition units.Image acquisition units can be CCD, also can be complementary metal oxide semiconductor (CMOS) (CMOS, Complementary Metal Oxide Semiconductor).
Touch-screen implementation method of the present invention is as shown in Figure 1, may further comprise the steps:
Step 101 is provided with catoptron on the inside surface of any frame of the display screen of polygonized structure; And arbitrarily an image acquisition units is set adjacent two frame intersection point places at except that the frame that is provided with catoptron other;
Step 102 during touch display screen, in the position of forming images on the image acquisition units with through the position that catoptron forms images, is confirmed touch point position according to the touch point on image acquisition units.
Wherein, the method that image acquisition units is set is: the intersection point that image acquisition units is belonged to adjacent two frames aligns with aperture on the lens of image acquisition units; And make the angled θ of one of them frame in image acquisition units and adjacent two frames; Concrete: the intersection point of adjacent two frames is made as initial point O; Make the adjacent frame of a frame in adjacent two frames be positioned at the x axle, with perpendicular to the direction of x axle as y axle (y axle and other with the angle of frame less than 90 degree); The centre normal of the lens that the angle of adjacent two frames is
makes image acquisition units and the angled θ of x axle (promptly being positioned at the frame of x axle); Preferably, θ is
Preferably, above-mentioned polygon is a quadrilateral, further is rectangle.
Be definite method that example specifies the touch point below with the rectangular display screen, shown in Figure 2 is touch point measuring principle figure, as shown in Figure 2, is provided with a catoptron at the inside surface of the frame 4 of display screen 1; The aperture 13 of the lens 8 of image acquisition units 2 aligns with the intersection point of frame 6 and frame 5; Intersection point is made as initial point O; Make the arbitrary frame in frame 6 and the frame 5 be positioned at the x axle, for example make frame 5 be positioned at the x axle, the axle that frame 6 is belonged to is made as y axle (frame 6 is vertical with frame 5); Frame 5 and frame 6 angle is
(90 degree); The centre normal 16 of lens 8 and the angled θ of x axle (
degree).
The touch point position metering system is:
One, confirm the position of forming images in touch point 12 on image acquisition units 2, concrete:
So, can confirm the position of forming images in touch point 12 on image acquisition units 2.
Two, confirm the position of forming images on image acquisition units 2 through catoptron in touch point 12, concrete:
Picture point 12 ' the scioptics 8 of touch point 12 through forming images behind the catoptron form images on the imaging surface of lens 8, and by image acquisition units chip 9 detected touch point 12 through the picture point 14 on imaging surface behind the catoptron;
Distance between picture point 14 and the subpoint 17 is a
2Picture point 12 ' and picture point 14 between line and centre normal 16 angled β.
So, can confirm the position of touch point 12 through on image acquisition units 2, forming images behind the catoptron.
Wherein, Adopt following mode during the picture point of above-mentioned image acquisition units chip 9 on being detected as image planes: comprise a picture point analyser in the image acquisition units 2,, confirm the position of picture point when the most clear in order to image point position is analyzed; Regulate the position of image acquisition units chip 9 with this; Concrete, need regulate along the direction of the centre normal 16 of lens, make image acquisition units chip 9 can detect picture point the most clearly.In the processing procedure, can suppose the position of image acquisition units chip 9 residing positions for imaging imaging surface at picture point place when the most clear.
In addition, above-mentioned scioptics on imaging surface imaging applications be the pinhole imaging system principle of lens.
Three, the calculating touch point (x, position y), for:
Wherein,
L is the length that is positioned at the frame 5 of x axle; S is the distance between initial point O and the subpoint 17, and the value of s can change along with the position of image acquisition units chip 9.
Can draw through above-mentioned formula;
gets 90 degree; θ gets
when spending; The calculating of position, touch point is simpler; The scope of surveying is wider, and image acquisition units detects imaging system can detect any touch point on the display screen.
Based on above-mentioned touch-screen implementation method; The invention allows for a kind of touch-screen; As shown in Figure 3; Comprise: the display screen 1 of polygonized structure, being arranged at the image acquisition units 2 at the intersection point place that catoptron 3 and other any two frames that are arranged at except that the frame that is provided with catoptron on the inside surface of any frame (present embodiment is a frame 4) of display screen 1 form, is the angle of frame 6 and frame 5 among Fig. 3.
When the position of image acquisition units 2 is set: the aperture 13 on the lens 8 of the intersection point (intersection point of frame 6 and frame 5 among Fig. 3) of two frames of image acquisition units 2 place angles and image acquisition units 2 is alignd; And in the centre normal 16 of lens 8 and two frames be provided with the adjacent angled θ of frame of frame of catoptron 3; In the present embodiment; Adjacent with frame 4 in frame 6 and the frame 5 is frame 5; Then the centre normal 16 and frame 5 angled θ of lens 8 so, just can be confirmed the position of image acquisition units.
Preferably,
is the angle of the angle of above-mentioned two frames; Preferably;
is 90 degree; At this moment; The calculating of position, touch point is simpler, and the scope of detection is wider, and image acquisition units detects imaging system can detect any touch point on the display screen.
In the touch-screen implementation that the present invention proposes be to adopt the pinhole imaging system principle of lens because image acquisition units detects imaging system, during imaging on image acquisition units the variation of s value very little, so be applicable to the touch-screen of giant-screen.The touch-screen of the giant-screen of realizing for other technologies, such as infrared touch panel, needing increases corresponding infrared emission and receiving tube, and electric capacity and resistance and acoustic wave touching screen are faced with the difficulty of detection accuracy raising because the size of screen increases.
It is pointed out that because being of wide application of touch-screen comprises the working environment of low-light level and high brightness.Along with the variation of working environment brightness, the brightness of display screen display frame is also changing, and the variation meeting of these external environment condition light detects imaging system to image acquisition units and causes direct influence.In order to get rid of the interference of these outside visible lights, need to combine to use, to get rid of visible light detects imaging system to image acquisition units interference based on infrared optical system.
Concrete: as shown in Figure 3, an infrared light transmission sheet 10 is set on the outside surface of lens 8; An infrared backlight source 11 is set on the outside surface of the frame that is positioned at the x axle 5.The IR that touch point 12 utilizes infrared backlight source 11 to provide, see through infrared light transmission sheet 10 backs and scioptics 8 in imaging on the imaging surface and through catoptron 3, see through infrared light transmission sheet 10 back scioptics 8 again and on imaging surface, form images.
Because IR is an invisible light, can the demonstration and the external environment condition of display screen do not impacted, IR can be followed the camera image-forming principle simultaneously, on image acquisition units, forms images.Infrared light transmission sheet 10 allows IRs directly to pass through, and luminous ray is filtered and can not passes through, can reach more than 95% the transmittance of IR, and be below 5% to the transmittance of visible light.
When touch display screen; Even under the environment of dark; Touch point 12 also can " be illuminated " by the IR of infrared backlight source 11; Produce reflection, the IR of reflection gets into lens 8 through infrared light transmission sheet 10 and on imaging surface, forms images, and is detected as the picture point on the image planes by image acquisition units chip 9; Simultaneously, the catoptron 3 of avris can with behind the infrared light reflection once more scioptics 8 on imaging surface, form images, and be detected as the picture point on the image planes by image acquisition units chip 9.So no matter how the power of surround lighting and the brightness and color of display screen displaying contents change, the reflection ray of these visible lights all can be filtered out by infrared light transmission sheet 10, therefore can not detect imaging system and exert an influence image acquisition units.This image acquisition units can be CCD or CMOS.
The above-mentioned method of the present invention is equally applicable to polygon touch-screens such as triangle, hexagon.Be illustrated in figure 4 as the structural representation of triangle touch-screen; Shown in Figure 5 is the structural representation of hexagon touch-screen.
The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.
Claims (10)
1. touch point method for determining position on the touch-screen, said touch-screen comprises the display screen of polygonized structure; It is characterized in that, on the inside surface of any frame of said display screen, catoptron is set; An image acquisition units is set adjacent two frame intersection point places arbitrarily at except that the said frame that is provided with catoptron other; This method also comprises:
When touching said display screen, in the position of forming images on the image acquisition units and the position of on image acquisition units, forming images, confirm said touch point position through said catoptron according to the touch point.
2. according to touch point method for determining position on the said touch-screen of claim 1, it is characterized in that the angle of forming at said adjacent two frames is provided with image acquisition units, comprising:
Aperture on the lens of the intersection point of said adjacent two frames and image acquisition units is alignd;
The intersection point of said adjacent two frames is made as initial point O, makes the frame in said adjacent two frames be positioned at the x axle, with perpendicular to the direction of x axle as the y axle; The angle of said adjacent two frames is the centre normal and the angled θ of said x axle of
said lens.
3. according to touch point method for determining position on the said touch-screen of claim 2; It is characterized in that said angle θ is
4. according to touch point method for determining position on the said touch-screen of claim 2, it is characterized in that this method also comprises: the infrared light transmission sheet is set on the outside surface of said lens; On the outside surface of the frame of the said x of being positioned at axle, infrared backlight source is set;
The IR that said touch point utilizes said infrared backlight source to provide is through on said image acquisition units, forming images through said infrared light transmission sheet in imaging on the said image acquisition units and after through said catoptron behind the said infrared light transmission sheet.
5. according to touch point method for determining position on claim 3 or the 4 said touch-screens, it is characterized in that this method also comprises: confirm the position of forming images in said touch point on image acquisition units, comprising:
Said lens are passed through in said touch point, in the imaging surface imaging of said lens, and by the picture point on the image acquisition units chip detection imaging surface;
Said touch point is a in picture point on the imaging surface and the distance of said centre normal between the subpoint on the said imaging surface
1Said touch point and said touch point line and the angled α of said centre normal between the picture point on the imaging surface.
6. according to touch point method for determining position on the said touch-screen of claim 5, it is characterized in that, confirm that said touch point through the position that said catoptron forms images, comprising on said image acquisition units:
The picture point that forms images after through said catoptron in said touch point forms images on the imaging surface of said lens through said lens, and by the picture point on the image acquisition units chip detection imaging surface;
Said touch point is a through the distance of said catoptron between picture point on the imaging surface and said subpoint
2Picture point that forms images after through said catoptron in said touch point and said touch point are through line and the said centre normal angled β of said catoptron between the picture point on the imaging surface.
7. according to touch point method for determining position on the said touch-screen of claim 6, it is characterized in that, confirm said touch point (x, position y), for:
Wherein, said
Said L is the length that is positioned at the frame of x axle; Said s is the distance between said initial point O and the said subpoint.
8. touch-screen; It is characterized in that, comprise parallelogram sturcutre display screen, be arranged on the catoptron on the inside surface of any frame of said display screen and be arranged on other image acquisition units at adjacent two frame intersection point places arbitrarily except that the said frame that is provided with catoptron;
Forming images on said image acquisition units in touch point on the said display screen, and forms images on said image acquisition units through said catoptron;
Said image acquisition units in the position of forming images on the said image acquisition units and the position of on said image acquisition units, forming images through said catoptron, is confirmed said touch point position according to said touch point.
9. said according to Claim 8 touch-screen is characterized in that, the intersection point of said adjacent two frames aligns with aperture on the lens of said image acquisition units; The angle of said adjacent two frames is
The intersection point of said adjacent two frames is initial point O, and the frame in said adjacent two frames is positioned at the x axle, is the y axle perpendicular to the direction of x axle; The centre normal of said lens and said adjacent two frame metas are in the angled θ of the frame of x axle; Said θ is
10. according to the said touch-screen of claim 9, it is characterized in that said touch-screen also comprises:
Be arranged on the infrared backlight source of said adjacent two frame metas on the outside surface of the frame of x axle, the touch point that is used on the said display screen provides IR;
Be arranged on the infrared light transmission sheet on the outside surface of said lens; Be used to filter visible light; The IR that makes the touch point on the said display screen utilize said infrared backlight source to provide is through on said image acquisition units, forming images through said infrared light transmission sheet in imaging on the said image acquisition units and after through said catoptron behind the said infrared light transmission sheet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210026319.2A CN102778976B (en) | 2012-02-07 | 2012-02-07 | Touch point method for determining position and touch-screen on a kind of touch-screen |
| PCT/CN2012/086203 WO2013117100A1 (en) | 2012-02-07 | 2012-12-07 | Method for determining position of touch point on touch panel, and touch panel |
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| CN201210026319.2A CN102778976B (en) | 2012-02-07 | 2012-02-07 | Touch point method for determining position and touch-screen on a kind of touch-screen |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2013117100A1 (en) * | 2012-02-07 | 2013-08-15 | 北京京东方光电科技有限公司 | Method for determining position of touch point on touch panel, and touch panel |
| CN107562288A (en) * | 2017-08-31 | 2018-01-09 | 广东美的制冷设备有限公司 | Response method based on infrared contactor control device, infrared contactor control device and medium |
| CN111198633A (en) * | 2019-12-23 | 2020-05-26 | 宁波伊士通控制技术有限公司 | Touch signal acquisition method for five-wire resistance touch screen |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105607786B (en) * | 2016-03-14 | 2018-11-02 | 青岛海信电器股份有限公司 | A kind of recognition methods of touch point and infrared touch device |
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| WO2013117100A1 (en) * | 2012-02-07 | 2013-08-15 | 北京京东方光电科技有限公司 | Method for determining position of touch point on touch panel, and touch panel |
| CN107562288A (en) * | 2017-08-31 | 2018-01-09 | 广东美的制冷设备有限公司 | Response method based on infrared contactor control device, infrared contactor control device and medium |
| CN107562288B (en) * | 2017-08-31 | 2020-03-06 | 广东美的制冷设备有限公司 | Response method based on infrared touch device, infrared touch device and medium |
| CN111198633A (en) * | 2019-12-23 | 2020-05-26 | 宁波伊士通控制技术有限公司 | Touch signal acquisition method for five-wire resistance touch screen |
| CN111198633B (en) * | 2019-12-23 | 2023-04-07 | 宁波伊士通技术股份有限公司 | Five-wire resistance touch screen touch signal acquisition method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102778976B (en) | 2016-03-30 |
| WO2013117100A1 (en) | 2013-08-15 |
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