CN104486604A - Touch screen projection display device - Google Patents
Touch screen projection display device Download PDFInfo
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- CN104486604A CN104486604A CN201410844690.9A CN201410844690A CN104486604A CN 104486604 A CN104486604 A CN 104486604A CN 201410844690 A CN201410844690 A CN 201410844690A CN 104486604 A CN104486604 A CN 104486604A
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Abstract
A touch screen projection display device comprises a rear projection screen, an infrared touch frame, a projector set and a control device. The projector set projects a plurality of images to the curtain, and edges of adjacent images are overlapped. A photo sensitive assembly obtains brightness of all points of the curtain to generate corresponding sensing signals and sends the sensing signals to the control device. The control device obtains the images in the overlap areas of all the images of the curtain according to the sensing signals, the projector set is controlled to perform homogenization treatment on the brightness of all the points of the curtain according to the overlap areas, the plurality of images are combined into a seamless integral picture, the size of the curtain is extended into 120 inches to 300 inches, a large seamless curtain is realized, a displayed image is continuous and distortionless, a user can observe conveniently, and the use convenience is improved.
Description
Technical field
The present invention relates to projection display technique field, particularly relate to a kind of touch screen projection display apparatus.
Background technology
Projector equipment be a kind of can by image or VIDEO PROJECTION to the equipment on curtain, can be connected and play corresponding vision signal, so that viewing by the equipment such as same computer, VCD, DVD, BD, game machine, DV by different interfaces.Projector equipment is widely used in family, office, school and public place of entertainment.
Traditional projector equipment comprises projecting apparatus and curtain, and projecting apparatus can connect apparatus such as computer, and receiver, video information also generates corresponding light signal and is projected to curtain and show, and utilizes the picture of computer to display to carry out switching controls.Because curtain size is general less, causing the image of display too small, cannot meet the large high-definition screen curtain demand of army's public security and command centre of government, and need the switching being controlled displaying contents by control terminal, there is awkward shortcoming in traditional projector equipment.
Summary of the invention
Based on this, be necessary for the problems referred to above, a kind of touch screen projection display apparatus improving ease of use is provided.
A kind of touch screen projection display apparatus, comprising:
Rear projection screen, comprises curtain and the light sensing component being arranged at described curtain, and described light sensing component, for detecting the brightness of described curtain, generates corresponding induced signal and also exports; Described curtain is of a size of 120 cun to 300 cun;
Infrared touch frame, is arranged at described rear projection screen, for responding to touch-control action, generating the corresponding signal of telecommunication and exporting;
Projecting apparatus group, for projecting multiple image to described curtain, and makes the coincident of adjacent image;
Control device, connect described light sensing component, infrared touch frame and projecting apparatus group, for receiving described induced signal and the signal of telecommunication, obtain the overlapping region of each image at described curtain according to described induced signal, and control described projecting apparatus group according to described overlapping region Homogenization Treatments is carried out to the brightness of described curtain; Also for obtaining touch-control coordinate according to the described signal of telecommunication, and projecting apparatus group carries out picture switching according to described touch-control coordinate control;
Described infrared touch frame comprises the infrared transmitting tube being arranged at the adjacent both sides of described curtain, and be arranged at the other adjacent both sides of described curtain, and with described infrared transmitting tube infrared receiving tube one to one, the quantity being positioned at the infrared transmitting tube of described curtain the same side is 30000 to 35000; Described infrared receiving tube connects described control device, for when corresponding infrared transmitting tube is luminous, generates the corresponding signal of telecommunication and be sent to described control device according to the light signal received.
Above-mentioned touch screen projection display apparatus, projecting apparatus group projection multiple image to curtain, and makes the coincident of adjacent image.Light sensing component obtains the brightness of curtain each point, generates corresponding induced signal and is sent to control device.Control device obtains the overlapping region of each image at curtain according to induced signal, and according to overlapping region control projecting apparatus group, Homogenization Treatments is carried out to the brightness of curtain each point, multiple image co-registration is become the overall picture that seamless, the size expansion of curtain is made to be 120 cun to 300 cun, realize seamless large-screen, make the image of display undistorted continuously, be convenient to user's viewing, improve ease of use.The action of infrared touch frame induction touch-control, generate the corresponding signal of telecommunication and be sent to control device, control device obtains touch-control coordinate according to the signal of telecommunication, and carries out picture switching according to touch-control coordinate control projecting apparatus group.The quantity being positioned at the infrared transmitting tube of curtain the same side is 30000 to 35000, infrared receiving tube and infrared transmitting tube one_to_one corresponding, guarantee all to be sensed by infrared touch frame the touch-control action of curtain difference, improve and touch precision, make infrared touch technology can be used for the large scale screen of 120 cun to 300 cun, reach the effect of whole screen touch-control.
Accompanying drawing explanation
Fig. 1 is the structure chart of touch screen projection display apparatus in an embodiment;
Fig. 2 is the structure chart of touch screen projection display apparatus in another embodiment.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.Set forth a lot of detail in the following description so that fully understand the present invention.But the present invention can be much different from alternate manner described here to implement, those skilled in the art can when without prejudice to doing similar improvement when intension of the present invention, therefore the present invention is by the restriction of following public specific embodiment.
It should be noted that, when element is called as " being fixed on " another element, directly can there is element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may there is centering elements simultaneously.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present invention understand usually.The object of term used in the description of the invention herein just in order to describe specific embodiment, is not intended to be restriction the present invention.
A kind of touch screen projection display apparatus, as shown in Figure 1, comprises rear projection screen 110, infrared touch frame 120, projecting apparatus group 130 and control device 140.Rear projection screen 110 comprises curtain 112 and light sensing component 114, and light sensing component 114 is arranged at curtain 112, and control device 140 connects light sensing component 114, infrared touch frame 120 and projecting apparatus group 130.
Light sensing component 114, for obtaining the brightness of curtain 112, generates corresponding induced signal and is sent to control device 140.Curtain 112 is of a size of 120 cun to 300 cun.The material of curtain 112 can be specifically clear glass, polyvinyl chloride etc., in the present embodiment, curtain 112 is polyvinyl chloride material (Polyvinylchlorid, PVC) curtain, there is low flammability, high strength, resistance to climate variability and excellent geometrical stability, increase the useful life of curtain 112.
Wherein in an embodiment, rear projection screen 110 also comprises photic zone, and photic zone covers and is arranged at light sensing component 114.Photic zone is for increasing light transmittance and refractive index, reduce the reflectivity of curtain 112, and throw light can be concentrated the visual angle and the display surface that are refracted to nearly 80 degree, there will not be the difference of bright spot dim spot, namely the mean value that develops is high, be applicable to general low lumen projection machine, be also applicable to the projector of high-res, high brightness, high-contrast simultaneously.The whole manufacture process of rear projection screen 110 comprises screen design, Mold Making, smelting tool makes, raw material makes, screen is shaping, product money detects and the multiprogramming such as size reduction, and curtain 112 can be made as corresponding size according to demand.
Wherein in an embodiment, light sensing component 114 comprises the multiple light-sensitive elements being equidistantly laid in curtain 112, and connects the sender unit of each light-sensitive element, sender unit connection control device 140.Multiple light-sensitive element, for detecting the brightness of curtain 112 correspondence position, generates induced signal and is sent to control device 140 by radio transmitters.Light-sensitive element can be specifically photo resistance, photodiode or phototriode etc.
Infrared touch frame 120 is arranged at rear projection screen 110, for responding to touch-control action, generating the corresponding signal of telecommunication and being sent to control device 140.
Infrared touch frame 120 comprises the infrared transmitting tube being arranged at the adjacent both sides of curtain 112, and be arranged at the other adjacent both sides of curtain 114, and with infrared transmitting tube infrared receiving tube one to one, the quantity being positioned at the infrared transmitting tube of curtain 112 the same side is 30000 to 35000.Infrared receiving tube connection control device 140, for when corresponding infrared transmitting tube is luminous, generates the corresponding signal of telecommunication according to the light signal received and is sent to control device 140.
The concrete quantity being positioned at the infrared transmitting tube of curtain 112 the same side can resolution according to actual needs be arranged, and the infrared transmitting tube of the relative both sides of curtain 112 is identical with the quantity of infrared receiving tube.In addition, infrared touch frame 120 also can comprise the circuit board housing being arranged at curtain 112 edge, and infrared transmitting tube and infrared receiving tube are arranged at circuit board housing, is convenient to handling.
Infrared touch frame 120 does not need conducting glass substrate, and surface is without any medium, and light transmittance can reach 92%, can not have an impact to display effect, and the restriction of first-class precision instrument of not making a video recording by micro-optical.The infrared touch-control adopted is without pressure touch, support any lighttight object operation such as hand, pen, without the need to touch-control pressure, only slide gently can operate with hand, pen or any lighttight object, more do not need electromagnetism or capacitance pen, improve the applicability of touch screen projection display apparatus.
Projecting apparatus group 130 for projecting multiple image to curtain 112, and makes the coincident of adjacent image.Specifically can the picture segmentation shown be needed to be multiple subgraph, and the linking part of the subgraph be respectively associated exists identical content, view data segmentation obtained be stored in projecting apparatus group 130.Utilize projecting apparatus group 130 each image projection to be shown to curtain 112, the image border be associated is partially overlapped, completes image mosaic.
Wherein in an embodiment, projecting apparatus group 130 comprises multiple projecting apparatus of connection control device 140, each projecting apparatus is respectively used to projection correspondence image to curtain 112, make image along first direction and/or second direction arrangement, and the coincident of adjacent image, first direction and second direction are mutually vertical.
First direction and second direction specifically can adjust according to actual conditions, take first direction as vertical direction, second direction for horizontal direction be example, the display frame split as required and actual use occasion, display frame vertically can be split, or split in the horizontal direction, or vertically and divided in horizontal direction simultaneously.Split the linking part obtaining being associated subgraph and there is identical content, the quantity specifically splitting the subgraph obtained is corresponding with the quantity of projecting apparatus.By relevant view data according to the projecting apparatus of the position of subgraph in display frame stored in correspondence, the position of each projecting apparatus can be debugged in advance, the image be associated being projected to curtain 112 is connected and partially overlaps, complete image mosaic.
Corresponding, by each projecting apparatus by image projection to curtain 112, can be the horizontal each image of combination display, get the picture of more wide cut, this mode can be applicable to Large conference center, performing art centre, exhibition center and military project etc.Can be each image of vertical longitudinally accumulation, this special arrangement mode be applicable to the on-the-spot demonstration meeting of advertising sector or some particular/special requirements.Can also be show each image along horizontal and vertical direction simultaneously, pile up the super large picture of higher more wide cut, Surveillance center and command centre can be applied to.In the present embodiment, each projecting apparatus, simultaneously along the image that the display of horizontal and vertical direction is corresponding, to meet the large high-definition screen curtain demand of the special occasions such as army's public security and command centre of government, improves touch screen projection display apparatus applicability.
The particular type of projecting apparatus can according to circumstances be selected, and in the present embodiment, projecting apparatus is laser-projector.Laser-projector uses laser beam to transmit picture, and the optics of laser projection, primarily of redgreenblue light valve, conjunction bundle X prism, projection lens and driving light valve composition, has red, green, blue three look laser in laser projection.Laser closes bundle X prism and is integrated by three beams of laser being transmitted to after the expanding of corresponding optical element and process chip in machine again, and then by projection objective by the laser-transmitting after integrating on curtain 112, complete whole laser projection procedure for displaying.Laser-projector is utilized to show image, bright in luster and low in energy consumption.
Control device 140, for receiving induced signal and the signal of telecommunication, obtains the overlapping region of each image at curtain 112 according to induced signal, and carries out Homogenization Treatments according to the brightness of overlapping region control projecting apparatus group 130 pairs of curtains 112; Also for obtaining touch-control coordinate according to the signal of telecommunication, and carry out picture switching according to touch-control coordinate control projecting apparatus group 130.
Control device 140 is obtaining each image behind the overlapping region of curtain 112, specifically by adjusting the brightness of projecting apparatus each in projecting apparatus group 130 video bulb corresponding with overlapping region, realize the brightness uniformity process to curtain 112 each point, can be specifically that the brightness of overlapping region is reduced, also can be that the brightness in non-coincidence region is improved, image is seamlessly transitted in the brightness of overlapping region.
The infrared receiving tube of infrared touch frame 120 and infrared transmitting tube at curtain 112 in Rankine-Hugoniot relations one to one, form a light net become by infrared ray cloth, when have object (as finger, band gloves or any touching object etc.) enter infrared light net stop the infrared ray transmitter and receiver in somewhere time, the ultrared power that this infrared receiving tube putting both direction anyhow receives will change, by the change understanding ultrared reception condition, control device 140 just can know that where touches, thus determine touch-control coordinate.
Control device 140 utilizes hybrid matrix to carry out process to the signal that infrared receiving tube transmits and obtains touch-control coordinate, such as, when there being object to touch first point of curtain 112 second row, matrix coordinate identification is (1,2), when another object touches the 20000th point of the 30000th row of curtain 112, coordinate is (20000,30000), any touching object all can change the infrared ray on contact and realize touch screen operation.
Utilize infrared touch frame 120 to realize multiple point touching, in the present embodiment, the resolution of infrared touch frame 120 is 32768x32768, touches precision 95% and can reach above, can carry out smoothness and write, and supports that multiple spot carries out touch control operation simultaneously.Scanning resolution is high, effectively can eliminate external interference, reduces the impact of environment.By improving the touch precision of infrared touch frame 120, increasing data redudancy, under 20% sensor degradation, still normally can carry out multi-point touch operation, and accurately identify touch point.
Wherein in an embodiment, control device 140, after receiving touch-control directive command, receives the signal of telecommunication of infrared touch frame 120 transmission and obtains touch-control coordinate.
Touch-control directive command can be specifically sent by mobile terminal, when user needs to carry out touch control operation, sends touch-control instigate order to control device 140 by mobile terminal.Control device 140 obtains the signal of telecommunication of infrared touch frame 120 transmission again and carries out respective handling after receiving touch-control directive command, calculates touch-control coordinate.When not receiving touch-control directive command, control device 140 is in standby mode, does not carry out corresponding touch-control coordinate acquisition operations, reduces power consumption.
Wherein in an embodiment, control device 140 also carries out except process of making an uproar to the signal of telecommunication that infrared touch frame 120 sends, and removes the noise that surround lighting produces, and reduces the impact of surround lighting, improves light resistance.
Wherein in an embodiment, control device 140 comprises signal receiver and processor, and signal receiver connects light sensing component 114 and infrared touch frame 120, is specifically connected with the infrared receiving tube in infrared touch frame 120.Processor connection signal receiver and projecting apparatus group 130, be specifically connected with each projecting apparatus in projecting apparatus group 130.Signal receiver receives induced signal and the signal of telecommunication and is sent to processor, processor extracts the region of curtain brightness higher than predetermined threshold value according to induced signal, obtain overlapping region, and control projecting apparatus group 130 and reduce the brightness of image in overlapping region, specifically brightness can be reduced to predetermined threshold value.
Utilize edge fusion technology, first the edge of each image is superposed, carry out blanking in the part of edge superposition and merge multiple image, make it be fused into an overall picture and reach the seamless effect of whole screen.Because the area of overlapping region is general less, by the brightness reducing overlapping region, image is seamlessly transitted in the brightness of overlapping region, can use cost be reduced.
When user utilizes finger or other instruments touching curtain 112, meeting shield portions infrared ray, in the light signal that corresponding infrared receiving tube receives, ultrared power can change, and the signal of telecommunication that infrared receiving tube correspondence generates also can change.Processor also filters the signal of telecommunication, removes the signal that wavelength is greater than the light signal of preset value corresponding and obtains trap signal, obtain touch-control coordinate, and carry out picture switching according to touch-control coordinate control projecting apparatus group 130 according to trap signal.Can obtain the position residing for infrared ray be blocked according to trap signal, neither the equidirectional ultrared intersection point be blocked is touch point, and the coordinate of its correspondence is touch-control coordinate.Processor adopts micro-nano light sensation technology, filters the signal of telecommunication that infrared touch frame 120 sends, and removes wavelength and is greater than signal corresponding to the light signal of preset value, reject the interference of curtain reverberation, can improve touch-control accuracy.
Above-mentioned touch screen projection display apparatus, projecting apparatus group 130 projects multiple image to curtain, and makes the coincident of adjacent image.Light sensing component 114 obtains the brightness of curtain 112 each point, generates corresponding induced signal and is sent to control device 140.Control device 140 obtains the overlapping region of each image at curtain 112 according to induced signal, and carry out Homogenization Treatments according to the brightness of overlapping region control projecting apparatus group 130 pairs of curtain 112 each points, multiple image co-registration is become the overall picture that seamless, the size expansion of curtain 112 is made to be 120 cun to 300 cun, realize seamless large-screen, make the image of display undistorted continuously, be convenient to user's viewing, improve ease of use.
Above-mentioned touch screen projection display apparatus, touch-control action responded to by infrared touch frame 120, generate the corresponding signal of telecommunication and be sent to control device 140, control device 140 obtains touch-control coordinate according to the signal of telecommunication, and carries out picture switching according to touch-control coordinate control projecting apparatus group 130.The quantity being positioned at the infrared transmitting tube of curtain 112 the same side is 30000 to 35000, infrared receiving tube and infrared transmitting tube one_to_one corresponding, guarantee all to be sensed by infrared touch frame the touch-control action of curtain difference, improve and touch precision, infrared touch technology is made to can be used for the large scale screen of 120 cun to 300 cun, reach the effect of whole screen touch-control, the multi-point touch demand of more than 16 can be met, improve ease of use.
Wherein in an embodiment, as shown in Figure 2, touch screen projection display apparatus also comprises the sound equipment 150 be connected with control device 140.Control device 140, when carrying out picture according to touch-control coordinate control projecting apparatus group 130 and switching, sends corresponding voice data and plays to sound equipment 150.
Control device 140 can store voice data in advance, or utilizes external memory device stores audio data.Control projecting apparatus group 130 carry out picture switch time, control device 140 also extracts corresponding voice data and is sent to sound equipment 150 and plays.
Wherein in an embodiment, touch screen projection display apparatus also comprises the mobile terminal 160 carrying out radio communication with control device 140.Mobile terminal 160 is for sending touch command to control device 140, and control device 140 controls projecting apparatus group 130 according to touch command and carries out picture switching; The current display data of control device 140 also for sending projecting apparatus group 130 shows to mobile terminal 160.
Mobile terminal 160 can be specifically the touch control display terminal such as IPAD, carries out control switch by the display frame of mobile terminal 160 pairs of curtains 112.The current display data that control device 140 sends projecting apparatus group 130 shows to mobile terminal 160, namely refer to no matter control device 140 is carry out picture switching according to touch-control coordinate control projecting apparatus group 130, or control projecting apparatus group 130 according to touch command and carry out picture switching, the current display data corresponding with the image that projecting apparatus group 130 is showing is sent to mobile terminal 160 by capital, realize the picture synchronization display and control of curtain 112 and mobile terminal 160, to be more convenient for user operation, to improve convenience.
It can be specifically by the communication mode such as WIFI, bluetooth that mobile terminal 160 and control device 140 carry out radio communication, and in the present embodiment, mobile terminal 160 carries out radio communication by WIFI and control device 140.Wifi transmission speed is fast, distance, and has higher bandwidth, is convenient to current display data to be quickly and reliably sent to mobile terminal 160 and shows.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a touch screen projection display apparatus, is characterized in that, comprising:
Rear projection screen, comprises curtain and the light sensing component being arranged at described curtain, and described light sensing component, for detecting the brightness of described curtain, generates corresponding induced signal and also exports; Described curtain is of a size of 120 cun to 300 cun;
Infrared touch frame, is arranged at described rear projection screen, for responding to touch-control action, generating the corresponding signal of telecommunication and exporting;
Projecting apparatus group, for projecting multiple image to described curtain, and makes the coincident of adjacent image;
Control device, connect described light sensing component, infrared touch frame and projecting apparatus group, for receiving described induced signal and the signal of telecommunication, obtain the overlapping region of each image at described curtain according to described induced signal, and control described projecting apparatus group according to described overlapping region Homogenization Treatments is carried out to the brightness of described curtain; Also for obtaining touch-control coordinate according to the described signal of telecommunication, and projecting apparatus group carries out picture switching according to described touch-control coordinate control;
Described infrared touch frame comprises the infrared transmitting tube being arranged at the adjacent both sides of described curtain, and be arranged at the other adjacent both sides of described curtain, and with described infrared transmitting tube infrared receiving tube one to one, the quantity being positioned at the infrared transmitting tube of described curtain the same side is 30000 to 35000; Described infrared receiving tube connects described control device, for when corresponding infrared transmitting tube is luminous, generates the corresponding signal of telecommunication and be sent to described control device according to the light signal received.
2. touch screen projection display apparatus according to claim 1, is characterized in that, described curtain is the curtain of polyvinyl chloride material.
3. touch screen projection display apparatus according to claim 1, is characterized in that, described rear projection screen also comprises photic zone, and described photic zone covers and is arranged at described light sensing component.
4. touch screen projection display apparatus according to claim 1, it is characterized in that, described light sensing component comprises the multiple light-sensitive elements being equidistantly laid in described curtain, and connects the sender unit of each light-sensitive element, and described sender unit connects described control device; Described multiple light-sensitive element, for detecting the brightness of described curtain correspondence position, generates described induced signal and is sent to described control device by described radio transmitters.
5. touch screen projection display apparatus according to claim 1, is characterized in that, described control device, after receiving touch-control directive command, receives the signal of telecommunication of described infrared touch frame transmission and obtains touch-control coordinate.
6. touch screen projection display apparatus according to claim 1, it is characterized in that, described projecting apparatus group comprises the multiple projecting apparatus connecting described control device, each projecting apparatus is respectively used to projection correspondence image to described curtain, make described image along first direction and/or second direction arrangement, and the coincident of adjacent image, described first direction and second direction are mutually vertical.
7. touch screen projection display apparatus according to claim 6, is characterized in that, described projecting apparatus is laser-projector.
8. touch screen projection display apparatus according to claim 1, it is characterized in that, described control device comprises signal receiver and processor, and described signal receiver connects described light sensing component and infrared touch frame, and described processor connects described signal receiver and projecting apparatus group; Described signal receiver receives described induced signal and the signal of telecommunication and is sent to described processor, described processor extracts the region of described curtain brightness higher than predetermined threshold value according to described induced signal, obtain described overlapping region, and control the brightness of described projecting apparatus group reduction image in described overlapping region; Also for filtering the described signal of telecommunication, removing the signal that wavelength is greater than the light signal of preset value corresponding and obtaining trap signal, obtain touch-control coordinate according to described trap signal, and projecting apparatus group carrying out picture switching according to described touch-control coordinate control.
9. touch screen projection display apparatus according to claim 1, it is characterized in that, also comprise the sound equipment be connected with described control device, described control device, when projecting apparatus group according to described touch-control coordinate control carries out picture switching, sends corresponding voice data to described sound equipment and plays.
10. the touch screen projection display apparatus according to claim 1-9 any one, it is characterized in that, also comprise the mobile terminal carrying out radio communication with described control device, described mobile terminal is for sending touch command to described control device, and described control device controls described projecting apparatus group according to described touch command and carries out picture switching; Current display data to the described mobile terminal of described control device also for sending described projecting apparatus group shows.
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