CN201489503U - Surface multipoint touch device - Google Patents
Surface multipoint touch device Download PDFInfo
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- CN201489503U CN201489503U CN 200920193561 CN200920193561U CN201489503U CN 201489503 U CN201489503 U CN 201489503U CN 200920193561 CN200920193561 CN 200920193561 CN 200920193561 U CN200920193561 U CN 200920193561U CN 201489503 U CN201489503 U CN 201489503U
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Abstract
The utility model provides a surface multipoint touch locating device which comprises a screen, at least one group of light source assemblies capable of emitting infrared light, a projection and shooting integrated device, an image sampling and processing module, a projection displaying interface and a computer, wherein the projection and shooting integrated device can serve as projection equipment and an image inductor independently. The device can be applied to the surface of a large-sized display screen, has the advantages of simple structure, lower cost, and flexible and convenient utilization, can identify two or more touch bodies and has no restriction on the shapes and the types of the touch bodies.
Description
[technical field]
The utility model relates to a kind of multi-point touch screen device, particularly relates to a kind of multipoint touching device that uses camera or image inductor.
[background technology]
Along with the development of society, touch screen technology has been come into our life, and traditional keyboard adds that the mouse interactive mode is just progressively pointed or felt pen replaces.The location technology of multiple principle can be used in the display device surface and realize touch function, and these location technologies can realize that the single-point touches function just can satisfy the demand of people's operating computer usually.Along with the release of iphone in 2007, attracted people for multiple point touching technology more concern.The multiple point touching technology proposes with respect to the single-point touches technology, refer to computer system and can respond two or more input points simultaneously, finish a series of action by the motion conditions of analyzing between each input point, for example, the iphone of Apple can realize the page turning of text by the finger that slides, the rotation palm makes picture upset, the amplification that realizes picture of opening hand etc.
Can be used in the multipoint positioning technology that the surface touches at present, it realizes that principle is mainly based on mutual induction capacitance principle, strain resistor principle and shooting principle etc., wherein, mutual induction electric capacity multi-point touch panel is by increasing little capacitor cell lead-in wire on the touch pad, increase the method for the number of times of scanning detection, detect the variation of ranks infall mutual capacitance (coupling capacitance) and discern a plurality of touch points, the touch location technology that for example is applied on the iphone of Apple adopts this technology exactly; The principle of strain resistor technology and mutual induction electric capacity are similar, also are by increasing the lead-in wire of each strain unit, measuring the change in resistance of each strain resistor unit and calculate a plurality of touch point position.No matter be condenser type or resistive touch screen, because touch pad complex manufacturing technology, cost is too high, can only be used at present on the undersized touch apparatus, as mobile phone, player, handheld terminal etc., when requiring screen size big, the manufacture craft difficulty and the control circuit complexity of touch pad are multiplied, can not correctly respond a plurality of touch points and touch the multi-touch function that is difficult to realize ideal simultaneously.
Because there are the problems referred to above in condenser type, resistance-type multiple point touching technology, adopt the multipoint positioning technology of shooting principle just to be rapidly developed, the camera shooting type multiple point touching mainly contains two kinds of implementations at present, a kind of is to produce picture point by active light pen on screen, obtain by camera to deliver in the digital signal processor (DSP) behind the image of picture point and handle, at last image is analyzed, calculated the position coordinates of target image on screen.As publication number is the described scheme of Chinese patent of C N1632736A and CN1281209A.Adopt the touch-screen locating device of this scheme, use the generation equipment of special-purpose light pen as picture signal, camera can obtain desirable touch point image easily and then obtain the coordinate of touch point, realizes the multiple point touching that a plurality of light pens are operated simultaneously easily.But because this scheme need be used active light pen, for self non-luminous object touch, camera just can't be discerned, and has therefore greatly limited the dirigibility and the convenience of multiple point touching.
Another kind of multiple point touching technical scheme based on the shooting principle is to have utilized the total reflection principle in the optics, it realizes principle as shown in Figure 1, four side polishings of a thicker high transparent acryl glass plate 101, place infrared LED 102, when 102 are lighted, Infrared is injected in it from four sides of acryl glass plate 101, and launch propagation entirely in inside, when finger or other objects contact 101 surperficial, the total reflection of contact position is destroyed, scattering takes place in infrared light herein, produces infrared bright spot.Infrared camera photographs to be transferred to COMPUTER CALCULATION after the bright spot and goes out the touch point coordinate.In this scheme, projector 103, projection screen 105 constitutes projection display system, 106 expression screen fixed supports.The detailed description of this scheme is found in the multiple point touching technical papers (Han based on frustrated total reflection that Jefferson Y.Han in 2005 delivers, J.Y. (2005), Low-Cost Multi-Touch Sensing throughFrustrated Total Internal Reflection, In Proceedings of the18th Annual ACM Symposium on User Interface Software andTechnology, pp.115-118), accompanying drawing 1 is selected from this article.Adopt this scheme, light source is introduced in side at this high transparent material, the image that utilizes total reflection principle to obtain touch objects can obtain effect preferably on the small size display screen, but, when being used in large scale touch-screen particularly 60 " more than touch-screen the time, the effect of total reflection can variation, the dark phenomenon in bright centre, edge occurs; camera is difficult to obtain target image preferably, multiple point touching is difficult to realize; Will obtain more satisfactory total reflection effect simultaneously, machining precision, the installation accuracy of transparent material had higher requirement, cause total system cost height, the Installation and Debugging difficulty is big, complex structure.
Therefore, prior art is improved, can provide a kind of and can be applied on the large scale display screen, simple in structure, cost is lower, can discern finger or label design, use convenient flexibly, antijamming capability is strong, many people multiple spot operates simultaneously that the touching device that also can correctly respond is real to be necessity.
[summary of the invention]
The purpose of this utility model provide a kind of can be used on the large scale display screen surface, simple in structure, cost is lower, it is convenient flexibly to use, can discern two or more and touch bodies and do not limit the multiple point touching locating device that touches shape and type.
To achieve these goals, the utility model adopts following technical scheme:
A kind of surface multipoint touching device that uses camera or image inductor, it comprises:
The screen that can see through infrared light, at least one group of light source assembly that can launch infrared light, integrated apparatus is taken in the projection of a sharing lens, image acquisition and processing module, a Projection Display interface and a computing machine.
Wherein, this at least one group of light source assembly is installed at least one side of screen, do not contact near screen, and the optical axis of this light source assembly and screen inclination intersect, rather than parallel or vertical, and this light source assembly can shine whole screen area after the installation.Screen be installed in can be clear the reception projection take the position of the projected picture of integration apparatus, projection is taken integrated apparatus one end and is linked to each other with computing machine by the Projection Display interface, the other end links to each other with computing machine with processing module by image acquisition.
Described screen comprises base material, scattering layer, protective seam, and base material is used for fixing scattering layer and protective seam, selects glass for use, organic glass, the contour light transmissive material of acryl resin; Scattering layer is used for receiving projected image, and selecting for use has the material of higher transmittance to make to infrared light, for guaranteeing good demonstration imaging effect and preventing that dazzle from producing, and can add some optical coatings; Scratch scattering layer or base material when protective seam is used for preventing to touch; On structure is arranged, only need protective seam is arranged in outermost layer, and the position of base material and scattering layer can be arranged according to actual needs flexibly.
Described light source assembly comprises that at least one can launch the light-emitting component of infrared light, holder and optionally light intensity regulating module and optionally infrared reflecting device.Wherein light-emitting component can be infraluminescence LED, bulb etc., and it can be wire that each light emitting device group becomes arrangement form, is concentrated into point-like, also can be arranged into the form of dotted line combination as required.Optionally the light intensity regulating module can be followed the surround lighting variation and be regulated the luminous intensity of light-emitting component automatically, in the time of can taking by image sensing apparatus image luminance information is clapped by institute and feed back to the light intensity regulating module, the size of regulating the light-emitting component electric current according to the strong and weak information of brightness changes the luminous intensity of light-emitting component, and this method is as easy as rolling off a log realization for image inductor; Or add light activated element such as photodiode in addition and come the acquisition environment light intensity to change, the size of regulating electric current equally changes luminous intensity.The infrared reflecting device is used for light that the antireflection part infrared components sends and strengthens the illumination of local screen, and the material of reflex reflector can be a glass, organic glass, metal; Its reflector shape can the plane, cambered surface, and quadric surface also can be the irregular curved surface through optimal design, reflecting surface is made can adopt plated film, pastes the infrared reflecting film or directly adopts mechanical polishing method.
The projection of described sharing lens is taken integrated apparatus and is mainly contained two effects, and the infrared image of the touch operation object of projection display picture on screen and the photographed screen is primarily characterized in that projection and takes shared same projection lens.It is formed and mainly comprises projection lens, light-splitting device, Projection Display chip, chip drive circuit, image inductor; Projection lens adopts high resolving power short-focus mirror head, can effectively reduce the volume of device; Light-splitting device is used for separating projecting light path and takes light path, can adopt the prism that is coated with spectro-film, also can adopt dull and stereotyped spectroscope, light-splitting device is installed in the optional position between phtographic lens and the Projection Display chip, and the angle between light splitting surface and the camera lens optical axis is in an acute angle.Projection Display chip, chip drive circuit can adopt LCD, DMD or LCOS chip and corresponding driving circuit.Image inductor is used for receiving infrared image, is installed on the light path of light-splitting device, and this light path is another light path that is different from projecting light path, and this image inductor is positioned at projecting light path's one side, be in can the whole screen-picture of clear acquisition the position.Wherein image inductor can be ccd or the cmos camera that has camera lens, also can be ccd or the cmos device that does not comprise camera lens, for strengthening the reception of infrared image, also include optical filter in this image inductor, this optical filter can be conveyed the identical infrared light height of light source component wavelength and be seen through, and the light of other wavelength is by seeing through.
Described image acquisition and processing module are used for gathering touch object infrared image signal, and picture signal carried out denoising, increases contrast, removes processing such as background, alternatively can touch operation body coordinate will be calculated, size, function increases such as number are come in, and above-mentioned functions also can be finished in computing machine.The composition of image acquisition and processing module comprises center processor, graphics processing unit and storage unit, described center processor can be DSP or FPGA, be used to control the integrated operation of graphics processing unit, described storage unit is preferably the Flash storer, the data that produced when being used to store the carries out image processing program.
In this programme, the Infrared that light source assembly sends illuminates whole screen, as taking the background light source that touches image, the display frame of computing machine output is sent to projection by projection development display interface and takes integration apparatus, seeing through projection lens is presented on the screen, because it is the sightless infrared light of human eye that light source assembly sends, therefore can not have influence on the display effect of projected picture.When the finger or other the operation objects when on-screen options is done, according to the light path principle of reversibility, the imaging that sees through projection lens can stay the touch object image on image inductor, carry out denoising by image acquisition and processing module, smoothly, processing such as screening, obtain to touch the unique point of body, calculate the shape that touches body, size, number and coordinate information are delivered to Computer Processing, computing machine is according to the coordinate of each touch point, size, information and executing such as shape touch instruction, touch action is made response, and the result is sent to the Projection Display integrated apparatus by the Projection Display interface projects on the screen, finish touch reciprocal process.
For obtaining more high-precision touch coordinate, discern more touch body details simultaneously, the utility model can also adopt second kind of technical scheme, a kind of screen positioning device that uses camera or image inductor, it comprises:
The screen that can see through infrared light, at least one group of light source assembly that can launch infrared light, a projector equipment, two or more image inductors, image acquisition and processing module, a Projection Display interface and a computing machine.
Wherein, this at least one group of light source assembly is installed at least one side of screen and do not contact near screen, and the optical axis of this light source assembly intersects with screen inclination rather than be parallel or vertical, can shine whole screen area after the installation.Screen be installed in can clear reception projected picture with a certain distance from projector equipment the position, image inductor is installed in the next door of projector equipment, each image inductor can the photographing section viewing area, whole screen scope is contained in the zone that all images inductor can photograph, for preventing to omit, captured viewing area exists overlaps.Projector equipment links to each other with computing machine by the Projection Display interface, and image inductor links to each other with computing machine with processing module by image acquisition.
In this programme, screen, light source assembly, computing machine adopt the ingredient with a last similar scheme, difference is, projection display apparatus separates separately with image inductor, each image inductor comprises the touch image that a camera lens is taken a part of viewing area separately at least, deliver to image acquisition and processing module and carry out picture splicing, form the complete touch image of whole viewing area.This process has two kinds of implementation methods, a kind of method is that each image inductor also comprises optical filter and image sensing chip ccd or cmos except that camera lens, the independent separately piece image of taking, deliver to the image acquisition and processing module by data-interface separately and carry out the picture splicing processing, correspondingly, image acquisition and processing module also comprise the multichannel input interface except that comprising center processor and storage unit, this interface can adopt the DVI interface, also can adopt the RJ485 network interface.Another kind method is the shared optical filter of a plurality of image inductors and image sensing chip such as ccd or cmos, each image inductor obtains by camera lens behind the image of a part of viewing area by optics conductive features such as imaging fiber on the image sensing chip, by adjusting the position of each image inductor camera lens, the image block of whole viewing area is imaged on the same induction chip, deliver to image acquisition and processing module again and carry out picture splicing and border fusion treatment, form the complete touch image of whole viewing area.The method is only used an image sensing chip, does not therefore need the multiple signals transmission, does not have the signal Synchronization problem.
This programme adopts the advantage of at least 2 image inductors to be and can to segment whole view field, can obtain meticulousr touch object image, obtain more details, can better discern the shape that touches body and then realize that better more practical touch function creates conditions for application software.
The realization multi-point touch locating method of above-mentioned the utility model surface multipoint touching device comprises the steps:
(1) starts projection display apparatus and light source assembly;
(2) initialisation image inductor and image acquisition and processing module comprise and obtain initial image information, and basic Background is retained, and can the test of judgement external environment satisfy condition of work, calibration initial position coordinate;
(3) image inductor obtains the touch image of doing in on-screen options, is sent to image acquisition and processing module;
(4) image acquisition and processing module are carried out denoising point, smoothing processing to touching image, relatively extract the unique point that touches image in the back with background image, calculate the shape, size, number and the coordinate information that touch body and deliver to Computer Processing;
(5) information of touch point is calculated in Computer Analysis, and each touch point of unique identification, and each touch point information can be sent to application software by the recognition data form with computing machine;
(6) application software is handled touch point information, carries out the corresponding command, and touch action is made response;
(7) computing machine is sent to projector equipment by the Projection Display interface with execution result and is presented on the screen.
In above-mentioned steps 4, calculate the shape, size, number and the coordinate information that touch body and can in image acquisition and processing module, finish, also can finish by computing machine.
The utility model touching device can position calibration when using for the first time or needs are arranged, by calculating the location parameter of determining the calibration pattern, form the position correction parameter of operating body, be used for revising because camera or image inductor alignment error and environment for use change the positioning error of being brought, the calibration of this location can be finished in image acquisition and processing module, also can be finished by computer software.
Compared with prior art, the utility model has following beneficial effect:
One, the utility model surface multiple point touching locating device does not need to use active light pen as picture signal generation equipment, the operation object can be finger, palm or other object, has therefore improved the use dirigibility and the convenience of locating device greatly.
Two, the utility model multipoint touching device can be designed to shooting and projection arrangement the form of shared projection lens, view field overlaps fully with shooting area like this, add being of high quality of projection lens, can not produce anamorphose, can reduce the difficulty that photographs is handled.Can simplify the structure of locating device greatly, thereby reduce cost.
Three, the utility model multipoint touching device also can be designed to the mode that a plurality of phtographic lens subregions are taken, and realizes improving under the big display size situation precision of shooting picture, realizes that high precision touches the location, discerns more multiple goal details, realizes more application.
Four, the light source assembly of the utility model multipoint touching device employing is simple in structure, and layout is flexible, can improve illuminating effect preferably, obvious hot spot can not occur, realizes good illumination easily on the large scale touch-screen.
Five, the utility model multipoint touching device screen simple structure, manufacture craft is easy, and is easy for installation, and cost is low, realizes easily producing in batches, can realize good Projection Display effect, while rub resistance, resistance to deformation, dependable performance.
Six, the utility model is realized multiple point touching positioning algorithm based efficient height, and touch point position coordinates convenience of calculation is accurately, reliable.
[description of drawings]
Fig. 1 is that existing total reflection surface touches principle schematic;
Fig. 2 is first kind of structural representation of the utility model multiple point touching locating device;
Fig. 3 is second kind of structural representation of the utility model multiple point touching locating device;
Fig. 4 is the third structural representation of the utility model multiple point touching locating device;
Fig. 5 is the screen construction synoptic diagram;
Fig. 6 is the 4th a kind of structural representation of the utility model multiple point touching locating device;
Fig. 7 is the utility model localization method process flow diagram.
[embodiment]
Please refer to Fig. 2, be first kind of structural representation of the utility model touch-screen locating device, display screen 201 be installed in can be clear the reception projection take the position of the projected picture of integration apparatus 204, two groups of light source assemblies 202,203 are installed in two side positions near screen 201, and the irradiating angle of this light source assembly 202,203 tilts with screen 201 rather than be parallel or vertical, and can shine whole screen 201 zones, as taking the background light source that touches image.Projection is taken integrated apparatus 204 1 ends and is linked to each other with computing machine 207 by Projection Display interface 206, and the other end links to each other with computing machine 207 with processing module 205 by image acquisition.As shown in Figure 2, integrated apparatus 204 is taken in projection can finish Projection Display function and image camera function respectively, in the Projection Display part, the picture that is presented on the Projection Display chip 213 is projected on the screen 201 by projection lens 211 through light-splitting device 212 backs; And at photographing section, after the touch body that on-screen options is done is projected camera lens 211 shootings, see through light splitting piece 212 and be imaged on the image inductor 214.
The structure of screen comprises base material 503 referring to accompanying drawing 5, scattering layer 502, and protective seam 501, base material 503 is used for fixing scattering layer and protective seam, and preferred sheet glass also can be selected organic glass for use, the contour light transmissive material of acryl resin; Scattering layer 502 is used for receiving projected image, and selecting for use has the material of higher transmittance to make to infrared light, for guaranteeing good demonstration imaging effect and preventing that dazzle from producing, and can add some optical coatings; Scratch scattering layer or base material when protective seam 503 is used for preventing to touch; On structure is arranged, only need protective seam 501 is arranged in outermost layer, and the position of base material 503 and scattering layer 502 can be arranged according to actual needs flexibly.
Light source assembly 202,203 mainly comprises the one or more light-emitting components that can launch infrared light, preferred infraluminescence LED, infrared bulb also can, comprise holder and optional light intensity regulating module in addition.It can be wire that each infrared components is formed arrangement form, is concentrated into point-like, also can be arranged into the form of dotted line combination as required.Optionally the light intensity regulating module can be followed the surround lighting variation and be regulated the luminous intensity of light-emitting component automatically, when implementation method can be taken by image sensing apparatus monochrome information is fed back to the light intensity regulating module, changes luminous intensity by the size of regulating electric current; Also having a kind of method is to add light activated element such as photodiode in addition to survey light intensity and change, and changes luminous intensity by the size of regulating electric current.
Projection is taken in the ingredient of integrated apparatus 204, and projection lens 211 adopts high resolving power short-focus mirror head, can effectively reduce the volume of device; Light-splitting device 212 is used for separating projecting light path and takes light path, can adopt the prism that is coated with spectro-film, also can adopt dull and stereotyped spectroscope, light-splitting device 212 is installed in the optional position between camera lens 211 and the Projection Display chip 213, angle between light splitting surface and the camera lens optical axis is in an acute angle, selects miter angle usually for use, certain needs according to structural design, also can select 30 degree for use, 60 degree wait other angle.Projection Display chip 213 and driving circuit can be LCD, DMD or LCOS chip.214 of image inductors can be the cameras that has ccd or cmos, also can be ccd or the cmos device that does not comprise camera lens, be installed on light-splitting device 212 light paths, and be different from the other direction of projecting light path, be positioned at projecting light path's one side, be in can the whole screen-picture of clear acquisition the position.For strengthening the reception of infrared image, in image inductor 214, increase an optical filter usually, this optical filter can be conveyed the identical infrared light height of light source component wavelength and be seen through, and the light of other wavelength is by seeing through.
Light source assembly 202,203 Infrared of sending illuminate whole screen 201, the display frame of computing machine 207 outputs is sent to projection by projection development display interface 206 and takes integration apparatus 204, seeing through projection lens 211 is presented on the screen, because light source assembly 202, it is the sightless infrared light of human eye that 203 institutes send, and therefore can not have influence on the display effect of projected picture.When the finger or other the operation objects when on-screen options is done, according to the light path principle of reversibility, the imaging that sees through projection lens can stay the touch object image on image inductor, carry out denoising by image acquisition and processing module 205, smoothly, processing such as screening, obtain to touch the unique point of body, calculate the shape that touches body, size, number and coordinate information are delivered to Computer Processing, computing machine is according to the coordinate of each touch point, size, information and executing such as shape touch instruction, touch action is made response, and the result is sent to the Projection Display integrated apparatus by the Projection Display interface projects on the screen, finish touch reciprocal process.
Fig. 3 is the structural representation of the utility model second embodiment, and is similar with first embodiment, screen 301, and the composition that integrated apparatus 304 is taken in projection is identical with first embodiment with the installation site.Projection is taken integrated apparatus 304 1 ends and is linked to each other with computing machine 307 by Projection Display interface 306, and the other end links to each other with computing machine 307 with processing module 305 by image acquisition.Projection is taken in the integrated apparatus 304, the picture that is presented on the Projection Display chip 313 is projected on the screen 301 by projection lens 311 through light-splitting device 312 backs, is imaged on the image inductor 314 and see through light splitting piece 312 after the touch body that on-screen options is done is projected camera lens 311 shootings.
Difference is that the light source assembly of present embodiment form to go up adopts outside the light-emitting component 302 of emission infrared light of band holder and adopts infrared reflecting device 303 at opposite side.Wherein light-emitting component can be infraluminescence LED, bulb etc., and it can be wire that each light-emitting component spare is formed arrangement form, is concentrated into point-like, also can be arranged into the form of dotted line combination as required.Optionally the light intensity regulating module can be followed the surround lighting variation and be regulated the luminous intensity of light-emitting component automatically, infrared reflecting device 303 is used for light that the antireflection part infrared components sends and strengthens the illumination of local screen, the material of reflex reflector 303 can be a glass, organic glass, metal; Its reflector shape can the plane, cambered surface, and quadric surface also can be the irregular curved surface through optimal design, reflecting surface is made can adopt plated film, pastes the infrared reflecting film or directly adopts mechanical polishing method.
Fig. 4 is the structural representation of the utility model the 3rd embodiment, screen 401, light source assembly 402,403 composition structure is identical with second embodiment, projection display picture is sent to projection display apparatus 404 by computing machine 409 by Projection Display interface 407 and projects on the screen 401, difference is the image taking part, present embodiment adopts 2 image inductors 405,406, projection display apparatus 404 and image inductor 405,406 separate separately, image inductor 405,406 all contains complete camera lens, optical filter, induction chip is taken the touch image of a part of viewing area separately, deliver to image acquisition and processing module 408 is carried out picture splicing, form the complete touch image of whole viewing area.Correspondingly, image acquisition and processing module 408 also comprise the multichannel input interface except that comprising center processor and storage unit, and this interface can be adopted center processor, also can adopt the RJ485 network interface.As can be seen, for preventing to omit, image inductor 405,406 captured viewing areas exist overlaps from the figure.
Fig. 6 is the structural representation of the utility model the 4th embodiment, screen 601, light source assembly 602,603 composition structure is identical with first embodiment, projection display picture is sent to projection display apparatus 604 by computing machine 609 by Projection Display interface 607 and projects on the screen 601, the image taking part is similar with the 3rd embodiment, difference is 2 image inductors 605 that present embodiment adopts, the 606th, a shared image sensing chip ccd or a cmos who is installed in 605,605,606 obtain to be imaged on the image sensing chip by optical fiber 610 behind the image of a part of viewing area by camera lens, by adjusting each image inductor 605, the position of 606 camera lenses, the image block of whole viewing area is imaged on the same image sensing chip, deliver to image acquisition again and processing module 608 is carried out picture splicing and border fusion treatment, form the complete touch image of whole viewing area.About optical filter, can in 605 and 606, respectively install one, also can only install one before induction chip.
The flow process of the utility model multi-point touch locating method mainly contains following steps referring to Fig. 7:
(1) starts projection display apparatus and light source assembly;
(2) initialisation image inductor and image acquisition and processing module comprise and obtain initial image information, and basic Background is retained, and can the test of judgement external environment satisfy condition of work, calibration initial position coordinate;
(3) image inductor obtains the touch image of doing in on-screen options, is sent to image acquisition and processing module;
(4) image acquisition and processing module are carried out denoising point, smoothing processing to touching image, relatively extract the unique point that touches image in the back with background image, calculate the shape, size, number and the coordinate information that touch body and deliver to Computer Processing;
(5) information of touch point is calculated in Computer Analysis, and each touch point of unique identification, and each touch point information can be sent to application software by the recognition data form with computing machine;
(6) application software is handled touch point information, carries out the corresponding command, and touch action is made response;
(7) computing machine is sent to projector equipment by the Projection Display interface with execution result and is presented on the screen.
For the technical scheme that the utility model adopted, based on the experiment test effect, we recognize, as improving the recognition effect that touches image, having under the situation about needing, can be by improving the attitude that operating body moves or the outer shape of operating body is made necessary modes such as improvement realize on screen, for example, move rather than be sidelong the area that can effectively increase the touch point in screen surface, easier being identified with the smooth screen surface of finger; The object that uses the bar shaped label or post pattern can obtain higher touch recognition rate or the like.
The above only is preferred embodiment of the present utility model, in fact, adopts two or more cameras or image inductor also can realize effect of the present utility model preferably; For the bigger touch-screen of display area, touch-screen can be divided into little zone, each zone is taken by single camera or the image inductor corresponding with it; Selecting for use and install and also can select multiple different form or the like on arranging at light source; protection domain of the present utility model is not limited thereto, and those of skill in the art are any to be included within the utility model protection domain based on non-material change on the technical solutions of the utility model.
Claims (7)
1. surperficial multiple point touching locating device, it comprises an image acquisition and processing module, a Projection Display interface and a computing machine, it is characterized in that, it further comprises: the screen that can see through infrared light, at least one group of light source assembly that can launch infrared light, integrated apparatus is taken in the projection of a sharing lens, this at least one group of light source assembly is installed at least one side of screen, the optical axis of this light source assembly and screen inclination intersect, and can shine whole screen area, screen be installed in can be clear the reception projection take the position of the projected picture of integration apparatus, projection is taken integrated apparatus one end and is linked to each other with computing machine by the Projection Display interface, and the other end links to each other with computing machine with processing module by image acquisition.
2. surperficial multiple point touching locating device as claimed in claim 1, it is characterized in that, this projection is taken integrated apparatus and is comprised projection lens, light-splitting device, Projection Display chip, chip drive circuit, image inductor, light-splitting device is installed in the optional position between projection lens and the Projection Display chip, angle between light splitting surface and the camera lens optical axis is in an acute angle, image inductor is installed on the light path that is different from projecting light path of light-splitting device, be positioned at projecting light path's one side, be in can the whole screen-picture of clear acquisition the position.
3. surperficial multiple point touching locating device, it comprises an image acquisition and processing module, a Projection Display interface and a computing machine, it is characterized in that, it further comprises: the screen that can see through infrared light, at least one group of light source assembly that can launch infrared light, a projector equipment, two or more image inductors, this at least one group of light source assembly is installed at least one side of screen, the optical axis of this light source assembly and screen inclination intersect, and can shine whole screen area, the shared image sensing chip of this two or more image inductor, image inductor is installed in the projector equipment next door, whole screen scope is contained in the zone that all images inductor can photograph, projector equipment links to each other with computing machine by the Projection Display interface, and image inductor links to each other with computing machine with processing module by image acquisition.
4. as claim 1 or 3 described surperficial multiple point touching locating devices, it is characterized in that, this light source assembly comprises that at least one can launch the light-emitting component of infrared light, holder, and light emitting device group becomes arrangement form for being wire or being concentrated into point-like, or is arranged into the form of dotted line combination.
5. surperficial multiple point touching locating device as claimed in claim 4 is characterized in that, this light source assembly comprises that being used for light that the antireflection part infrared components sends strengthens the infrared reflecting device of local screen's illumination.
6. surperficial multiple point touching locating device as claimed in claim 4 is characterized in that, this light source assembly comprises that can follow surround lighting changes the light intensity regulating module of regulating the luminous intensity of light-emitting component automatically.
7. as claim 1 or 3 described surperficial multiple point touching locating devices; it is characterized in that this screen comprises base material, scattering layer, protective seam, wherein protective seam is arranged in outermost layer; described base material is selected high light transmissive material for use, and scattering layer is selected for use has the material of higher transmittance to make to infrared light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920193561 CN201489503U (en) | 2009-08-27 | 2009-08-27 | Surface multipoint touch device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920193561 CN201489503U (en) | 2009-08-27 | 2009-08-27 | Surface multipoint touch device |
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| CN201489503U true CN201489503U (en) | 2010-05-26 |
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| CN 200920193561 Expired - Fee Related CN201489503U (en) | 2009-08-27 | 2009-08-27 | Surface multipoint touch device |
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| CN (1) | CN201489503U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102411249A (en) * | 2010-09-21 | 2012-04-11 | 上海优熠电子科技有限公司 | One-piece projector with touch function |
| CN102521829A (en) * | 2011-11-22 | 2012-06-27 | 无锡海森诺科技有限公司 | Optical touch image calibrating method |
| CN102914937A (en) * | 2012-09-28 | 2013-02-06 | 苏州佳世达光电有限公司 | Projection system with touch control function |
| CN103091964A (en) * | 2013-01-10 | 2013-05-08 | 苏州佳世达光电有限公司 | Adjusting auxiliary tool and projection system |
| CN106650516A (en) * | 2016-11-22 | 2017-05-10 | 浙江宇视科技有限公司 | Screen display method and display device |
| CN107168590A (en) * | 2017-06-30 | 2017-09-15 | 成都成电光信科技股份有限公司 | A kind of touch-screen surface-mount type combined type infrared tube |
| CN108255352A (en) * | 2017-12-29 | 2018-07-06 | 安徽慧视金瞳科技有限公司 | Multiple point touching realization method and system in a kind of projection interactive system |
| CN110161793A (en) * | 2019-04-16 | 2019-08-23 | 苏州佳世达光电有限公司 | A kind of projection adjustment system, projector and supporting mechanism |
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2009
- 2009-08-27 CN CN 200920193561 patent/CN201489503U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102411249A (en) * | 2010-09-21 | 2012-04-11 | 上海优熠电子科技有限公司 | One-piece projector with touch function |
| CN102521829A (en) * | 2011-11-22 | 2012-06-27 | 无锡海森诺科技有限公司 | Optical touch image calibrating method |
| CN102914937A (en) * | 2012-09-28 | 2013-02-06 | 苏州佳世达光电有限公司 | Projection system with touch control function |
| CN102914937B (en) * | 2012-09-28 | 2015-03-25 | 苏州佳世达光电有限公司 | Projection system with touch control function |
| CN103091964A (en) * | 2013-01-10 | 2013-05-08 | 苏州佳世达光电有限公司 | Adjusting auxiliary tool and projection system |
| CN103091964B (en) * | 2013-01-10 | 2015-03-25 | 苏州佳世达光电有限公司 | Adjusting auxiliary tool and projection system |
| CN106650516A (en) * | 2016-11-22 | 2017-05-10 | 浙江宇视科技有限公司 | Screen display method and display device |
| CN106650516B (en) * | 2016-11-22 | 2019-10-18 | 浙江宇视科技有限公司 | A kind of screen display method and display device |
| CN107168590A (en) * | 2017-06-30 | 2017-09-15 | 成都成电光信科技股份有限公司 | A kind of touch-screen surface-mount type combined type infrared tube |
| CN108255352A (en) * | 2017-12-29 | 2018-07-06 | 安徽慧视金瞳科技有限公司 | Multiple point touching realization method and system in a kind of projection interactive system |
| CN108255352B (en) * | 2017-12-29 | 2021-02-19 | 安徽慧视金瞳科技有限公司 | Multi-touch implementation method and system in projection interaction system |
| CN110161793A (en) * | 2019-04-16 | 2019-08-23 | 苏州佳世达光电有限公司 | A kind of projection adjustment system, projector and supporting mechanism |
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