CN102045524A - Super-resolution large-screen display system - Google Patents
Super-resolution large-screen display system Download PDFInfo
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- CN102045524A CN102045524A CN2009102061600A CN200910206160A CN102045524A CN 102045524 A CN102045524 A CN 102045524A CN 2009102061600 A CN2009102061600 A CN 2009102061600A CN 200910206160 A CN200910206160 A CN 200910206160A CN 102045524 A CN102045524 A CN 102045524A
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Abstract
The invention relates to a super-resolution large-screen display system, comprising a projection screen, a plurality of projectors, a plurality of position regulating tables corresponding to the plurality of projectors, a multi-path image fuser and a plurality of rear projector boxes, wherein each rear projector box is internally provided with one or more projectors and the position regulating tables corresponding to the projectors, one projector is arranged on one position regulating table, the position regulating tables are used for regulating the direction and position of the corresponding projectors, the plurality of rear projector boxes form a screen installation plane according to an M*N array, the projection screen is arranged on the screen installation plane, a box wall between every two adjacent rear projector boxes is provided with a light path window used for transmitting video image signals of adjacent projected image overlapping areas, and the multi-path image fuser is used for carrying out edge fusing treatment by utilizing the video image signals in image overlapping areas of the light path windows and presenting seamless spliced images through the projection screen, wherein M and N are integers, and at least one of M or N is larger than 1. The super-resolution large-screen display system is convenient for long-distance transportation, field installation and debugging.
Description
Technical field
The present invention relates to the terminal processes technology, particularly a kind of super-resolution large screen display system.
Background technology
Development along with terminal technology, in order to satisfy requirement to display oversize, ultrahigh resolution, form an array of display and a plurality of displays are stitched together, be called as " video wall ", the kind of video wall is a lot, such as CRT video wall, LCD video wall, PDP video wall, DLP video wall etc.Because the frame size bigger (tens millimeters) of CRT monitor, LCD display, PDP display, the video wall that is spliced into these displays has very wide piece, though the marginal dimension of DLP rear projection display is smaller, seam width by the piece of its video wall that is spliced into can be accomplished about 1mm, but, when closely watching, still can produce uncomfortable or factitious sensation; During such as the many image of lines such as map, the piece about width 1mm is easy to cause misreading, judging by accident of image information.For thorough removal of images piece, people have adopted the edge integration technology that the overlapping region of multiway images is handled, adopt then a plurality of projectors these visual information projections to a monoblock large-screen, present the image effect that does not have piece.The implementation of two kinds of prior aries.
At present, a kind of technical scheme is: isolate a rear-projection darkroom in a room, stay a huge window, projection screen just to be installed on this projection window on the strong face in rear-projection darkroom; Many projectors are installed in the rear-projection darkroom, and the adjacent projections machine forms doubling of the image district on projection screen; The image co-registration device carries out the edge fusion treatment to the video signal in the doubling of the image district, just can present seamless stitching image on projection screen.In order to reduce the longitudinal size in rear-projection darkroom, can adopt wide-angle lens, but can bring the geometric distortion of image; Also can adopt reflective mirror to change light path, but need to adopt the reflective mirror of belt supporting frame to realize.Because as can be known, the rear-projection darkroom is difficult to long-distance transport as the global facility that size is huge, on-the-spotly installs, constructs and more complicated, difficulty; The screen installed surface in rear-projection darkroom is generally the plane, is difficult to make high-precision lenticular screen; Also compare difficulty and adjust, cause nature of image co-registration zone transition easily.
Another kind of technical scheme is: utilize formed in mould way to make accurate arc-shaped guide rail, go out the lenticular screen support to site installation, the monoblock projection screen is installed in forms the cylindrical surface projecting curtain on the screen mount; But.Because it is oversize that the arc-shaped guide rail size of screen is installed, and can't advance elevator in the transportation, more complicated is installed at the scene of whole screen mount; The screen mount strength ratio is lower, easy deformation, and the syncretizing effect of image is poor; Projector's installation site precision is low, and instability is adjusted difficulty, causes not nature of image co-registration zone transition easily.
In research and practice process to prior art, the present inventor finds, in the existing implementation, all can not make things convenient for long-distance transportation, on-the-spot installation and debugging fast when guaranteeing precise and stable screen cover type (plane, cylinder).
Summary of the invention
The embodiment of the invention provides a kind of super-resolution large screen display system, to solve when guaranteeing precise and stable screen cover type (plane, cylinder), makes things convenient for long-distance transportation, and is on-the-spot quick for installation, the problem of convenient debugging.
For solving the problems of the technologies described above, the embodiment of the invention provides a kind of super-resolution large screen display system, comprise: a projection screen, a plurality of projectors, platform is transferred in a plurality of orientation corresponding with a plurality of projectors, a multiway images fusion device, also comprise: a plurality of rear-projection casings, one or more projectors and corresponding orientation accent platform are installed in each rear-projection casing, a projector is installed in an orientation and transfers on the platform, described orientation transfers platform to be used to adjust the direction and the position of projector, described a plurality of rear-projection casing is pressed M * N matrix and is formed a screen installed surface, described projection screen is installed on the described screen installed surface, tank wall between the adjacent rear-projection casing is provided with the light path window of the video signal that is used to transmit adjacent projections doubling of the image district, described multiway images fusion device is to carrying out the edge fusion treatment by the video signal in the doubling of the image district of light path window, present seamless stitching image by projection screen, wherein, M, N is an integer, and M, has one among the N at least greater than 1.
As shown from the above technical solution, the embodiment of the invention is by using a plurality of rear-projection box body splicings, cooperating the method for a monoblock projection screen to realize a kind of super large resolution large screen display system, when guaranteeing precise and stable screen cover type (plane, cylinder), make things convenient for long-distance transportation, easily advance elevator, smoothly by common stair, and realize simply, on-the-spotly efficiently install, debug performance.
Description of drawings
The structural representation of a kind of super-resolution large screen display system of providing in the embodiment of the invention is provided Fig. 1;
The schematic diagram that 3 * 1 and 3 * 2 rear-projection casing matrixes that Fig. 2 A and Fig. 2 B are respectively to be provided in the embodiment of the invention are pieced together;
Fig. 3 A and Fig. 3 B are respectively the schematic diagram that the different reflective mirror of employing in the embodiment of the invention changes projecting light path;
The structural representation of a kind of application example of a kind of super-resolution large screen display system that provides in Fig. 4 embodiment of the invention;
Fig. 5 A and Fig. 5 B are respectively projector that the embodiment of the invention provides and part light path district to the back of rear-projection casing outstanding top view and sectional side view;
Fig. 6 A and Fig. 6 B are respectively projector that the embodiment of the invention provides and part light path to the front of casing outstanding top view and sectional side view.
Embodiment
Below we will be in conjunction with the accompanying drawings, embodiment of the present invention are described in detail.
See also Fig. 1, structural representation for a kind of super-resolution large screen display system of providing in the embodiment of the invention, described super-resolution large screen display system comprises: (present embodiment is an example with 3 for projection screen 11, a plurality of projector and an a plurality of orientation accent platform corresponding with a plurality of projectors, promptly 121,122 and 123 for example), (present embodiment is an example with 3 for multiway images fusion device 13, an a plurality of rear-projection casing, promptly 141,142 and 143 is example), screen installed surface 15 and light path window 16 be (corresponding, with 2 be example, promptly 161 and 162).Wherein, one or more projectors and corresponding orientation accent platform are installed in each rear-projection casing, a projector is installed in an orientation and transfers on the platform, described orientation transfers platform to be used to adjust the direction and the position of projector, described a plurality of rear-projection casing is pressed M * N matrix and is formed a screen installed surface 15, described projection screen 11 is installed on the described screen installed surface 15, tank wall between the adjacent rear-projection casing is provided with the light path window 16 of the video signal that is used to transmit adjacent projections doubling of the image district, 13 pairs of described multiway images fusion devices carry out the edge fusion treatment by the video signal in the doubling of the image district of light path window 16, present seamless stitching image by projection screen, wherein, M, N is an integer, and M, has one among the N at least greater than 1.
In this Fig. 1, the single-point dotted line of band arrow, promptly
Expression vision cable or optical cable; Thick dashed line, promptly
Optical path signal; Fine dotted line, promptly
Expression light path window; The two point dotted line, promptly
The expression inner compartment.
Wherein, in this embodiment, M, N are integer, and have one among M, the N at least greater than 1, optionally adopt 2 * 1,3 * 1,4 * 1,5 * 1,6*1,7 * 1,8 * 1,2 * 2,3 * 2,4 * 2,5 * 2,6 * 2,7 * 2, rear-projection casing matrix splicings such as 8 * 2.
Shown in Fig. 2 A and Fig. 2 B, the schematic diagram that 3 * 1 and 3 * 2 rear-projection casing matrixes that Fig. 2 A and Fig. 2 B are respectively to be provided in the embodiment of the invention are pieced together.But be not limited to this, present embodiment is just as example.
In this embodiment, projection screen preferred flexible material though screen area is very big, can roll transportation; The screen installed surface is assigned on M * N the rear-projection casing, does not need very long guide rail, and the size of each rear-projection casing can be very not big yet.This make the long-distance transportation easily of all parts, easily advance elevator, smoothly by common stair.The orientation is transferred platform and edge image collector to cooperatively interact and is realized the fusion parameters adjustment of automatic edge, makes installation, the debugging of whole display system become simple, quick.
In the embodiment of the invention, by with a plurality of rear-projection box body splicings, can form a screen installed surface according to M * N matrix, the projection screen with a monoblock is installed in the screen installed surface again, has realized a kind of super-resolution large screen display system.The described technical scheme of the embodiment of the invention, when guaranteeing precise and stable screen cover type (plane, cylinder), make things convenient for long-distance transportation, easily advance elevator, smoothly by common stair, and realize simply, the on-the-spot installation, and convenient debugging efficiently.
Optionally, for dustproof, moistureproof and shielding veiling glare, described each rear-projection casing also is provided with one or more inner compartment, and described inner compartment is used for spliced box house space segmentation is become sealing light path district and ventilation and heat district.
Optionally, the camera lens front end of described projector, projection screen can be positioned at sealing light path district, and the fuselage of described projector (containing bulb, fan, louvre) can be positioned at the ventilation and heat district.
Optionally, use flexible seal ring between the camera lens of projector and the inner compartment, when guaranteeing sealing effectiveness, can not influence the adjustment campaign that platform is transferred in the orientation.
Optionally, described part or all of ventilation and heat district can be outstanding to the back or the front of rear-projection casing; And/or described part or all of sealing light path district can be outstanding to the back or the front of rear-projection casing.Specifically can infer following embodiment
Optionally, can also comprise in described each rear-projection casing: the one or more reflective mirrors that are used to change projecting light path.That is to say,, can adopt once (as Fig. 3 A) or twice (as Fig. 3 B) reflective mirror to change projecting light path in order further to reduce the degree of depth of rear-projection casing.Wherein, this reflective mirror preferably adopts front surface reflector.Wherein, Fig. 3 A is respectively with Fig. 3 B and adopts different reflective mirrors to change the schematic diagram of projecting light path.
Wherein, the camera lens front end of described projector, reflective mirror, projection screen are positioned at sealing light path district, and described projector fuselage is positioned at the ventilation and heat district.
Optionally, the position of the camera lens front end of described inner compartment distance projector is provided with the hole that projecting light path is provided.That is to say that described inner compartment is in the position perforate near the projector lens front end, so that projecting light path to be provided.
Optionally, the inwall in described sealing light path district is preferably black; Image is presented the influence of effect with the inner veiling glare of further reduction; And/or
The tank wall in the ventilation and heat district of described rear-projection casing is provided with ventilation hole; The preferred fan of installing forms the air channel, and the equipment in the ventilation and heat district is dispelled the heat; And/or
Described ventilation and heat can also be placed image co-registration device and power supply in the district, can also place other heating or athermic electronic equipment.
Optionally, described each rear-projection bottom half is provided with universal rolling wheel; That is to say, can universal rolling wheel be installed, cooperate the positioning and guiding pin/pilot hole between the adjacent rear-projection casing, make the box body splicing process easier, and splicing back screen installed surface type is more accurate in the bottom of rear-projection casing.
Optionally, the joining place between the adjacent rear-projection casing is fixedly connected by sectional fixture.That is to say, can use splicing place of sectional fixture fixed mask installed surface, remove sectional fixture again behind the locking splicing screw, can reduce the splicing offset of screen installed surface like this, make the face type of projection screen more accurate.
Optionally, described each rear-projection casing is provided with sliding guide groove and support level, makes the scene of projection screen that easier operation is installed.
Optionally, described system can also comprise: a plurality of image borders image acquisition device, be used for picture signal to described image co-registration device feedback overlay region, and with auxiliary described multiway images fusion device each road picture signal is adjusted automatically.With auxiliary multiway images fusion device each road picture signal is adjusted automatically, obtained better edge syncretizing effect.Wherein, described edge image collector can be video camera or digital camera.
Also see also Fig. 4, structural representation for a kind of application example of a kind of super-resolution large screen display system of providing in the embodiment of the invention, described system, comprise: a projection screen 41, a plurality of projectors transfer in a plurality of orientation corresponding with a plurality of projectors platform, and (it is example that present embodiment is transferred platform with 3 projectors and orientation, be that platform 421 is transferred in projector and orientation, projector and orientation transfer platform 422 and projector and orientation to transfer platform 423), a multiway images fusion device 43, (present embodiment is an example with 3 rear-projection casings to a plurality of rear-projection casings, it is rear-projection casing 441, rear-projection casing 442 and rear-projection casing 443, but be not limited to this), screen installed surface 45 and light path window are (corresponding, the light path window that is provided with is 2, i.e. light path window 461 and light path window 462).Further, this system can also comprise: edge collecting device 471 and edge collecting device 472.
In this Fig. 4, the single-point dotted line of band arrow, promptly
Expression vision cable or optical cable; Thick dashed line, promptly
Optical path signal; Fine dotted line, promptly
Expression light path window; The two point dotted line, promptly
The expression inner compartment.
As shown in Figure 4, in each rear-projection casing,, a projector and orientation transfer platform so that being installed, be that a described projector is installed on the orientation accent platform, this orientation accent platform is used to adjust the direction and the position of corresponding projector, to remedy the influence of rear-projection casing foozle to the projected image position.The rear-projection casing is fitted together by M * N matrix group and forms a screen installed surface 45, and projection screen 11 (is example with the flexible screen) is installed on this screen installed surface 45, and the precision of screen cover type is by the precision decision of screen installed surface.Tank wall between the adjacent rear-projection casing is provided with the light path window at the position near rear projection screen, shown in light path window 461 and light path window 462 among Fig. 4; This light path window is abdicated optical path space to doubling of the image district.Video signal in 43 pairs of doubling of the image districts of multiway images fusion device carries out the edge fusion treatment, just can present seamless stitching image on projection screen.This edge image collector 571 and edge collecting device 572 all are used for the picture signal to image co-registration device feedback overlay region, with auxiliary multiway images fusion device each road picture signal are adjusted automatically, obtain better edge syncretizing effect.The edge image collector can be video camera or digital camera, but is not limited to this, can also other have the terminal equipment of similar function, and present embodiment does not limit.
The invention provides by using a plurality of rear-projection box body splicings, cooperating the method for a monoblock projection screen to realize a kind of super-resolution large screen display system.And the rear-projection casing can be spliced into plane or column, to improve the precision of screen cover type, promptly when guaranteeing precise and stable screen cover type (plane, cylinder), make things convenient for long-distance transportation, easily advance elevator, smoothly by common stair, and realize simply, on-the-spotly efficiently install, debug performance.
Also seeing also Fig. 5 A and Fig. 5 B, be respectively projector that the embodiment of the invention provides and part light path district to the back of rear-projection casing outstanding top view and sectional side view, in this embodiment, is to be example with three rear-projection casings.In order further to reduce the overall dimension of super large resolution large screen display system, save the meeting room space, can be outstanding forward or backward projector and front end light path.
Shown in Fig. 5 A, part ventilation and heat district and/or part seal the light path district can be outstanding to the back of rear-projection casing, the ledge peripheral space is convenient to maintenance personal's operation on the one hand, on the other hand can above the projector, below or the side but the bulb door of switch is set, make things convenient for the replacing of projecting camera light bulb.Fig. 5 B is that ledge is near the schematic diagram of the latter half of rear-projection casing among this embodiment, and present embodiment is as example, and certainly, also this ledge also can be arranged on the first half of rear-projection casing as required, and present embodiment does not limit.
In addition, in the projector of M * 2 and part light path in the outstanding embodiment in the back of rear-projection casing, below a row ledge can be arranged in the latter half of corresponding rear-projection casing, above a row ledge be arranged in the first half of corresponding casing, the spaces between described two row's ledges make things convenient for plant maintenance and replacing bulb.
In the projector of M * 3 and part light path in the outstanding embodiment in the back of rear-projection casing, below a row ledge be arranged in the latter half of corresponding casing, a middle row's ledge is arranged in the first half of corresponding casing, above a row ledge be arranged in the latter half of corresponding casing, a middle row's ledge and face one row's ledge is close together, and the space between such two row's ledges makes things convenient for plant maintenance and replacing bulb.
Also see also Fig. 6 A and Fig. 6 B, be respectively projector that the embodiment of the invention provides and part light path to the front of casing outstanding top view and sectional side view.
The description of Fig. 6 A and Fig. 5 category-A seemingly, only, it is outstanding to the front of casing that part ventilation and heat district and part seal the light path district, ledge be hidden in desk below, present in the application scenarios long-range, saved the meeting room space greatly.Fig. 6 B is the sectional side view of Fig. 6 A, specifically as shown in the figure.Wherein, outstanding to the front of rear-projection casing with the projector of M * 1 and part light path among Fig. 6 A is example, and other are similar to the above embodiments, do not repeat them here.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product can be stored in the storage medium, as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of some part of each embodiment of the present invention or embodiment.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (15)
1. super-resolution large screen display system, comprise: a projection screen, a plurality of projectors, platform is transferred in a plurality of orientation corresponding with a plurality of projectors, a multiway images fusion device, it is characterized in that, also comprise: a plurality of rear-projection casings, one or more projectors and corresponding orientation accent platform are installed in each rear-projection casing, a projector is installed in an orientation and transfers on the platform, described orientation transfers platform to be used to adjust the direction and the position of projector, described a plurality of rear-projection casing is pressed M * N matrix and is formed a screen installed surface, described projection screen is installed on the described screen installed surface, tank wall between the adjacent rear-projection casing is provided with the light path window of the video signal that is used to transmit adjacent projections doubling of the image district, described multiway images fusion device is to carrying out the edge fusion treatment by the video signal in the doubling of the image district of light path window, present seamless stitching image by projection screen, wherein, M, N is an integer, and M, has one among the N at least greater than 1.
2. system according to claim 1 is characterized in that, described each rear-projection casing also is provided with one or more inner compartment, and described inner compartment is used for spliced rear-projection box house space segmentation is become sealing light path district and ventilation and heat district.
3. system according to claim 2 is characterized in that, the camera lens front end of described projector, projection screen are positioned at described sealing light path district, and the fuselage of described projector is positioned at described ventilation and heat district.
4. system according to claim 2 is characterized in that, described part or all of ventilation and heat district is outstanding to the back or the front of rear-projection casing; And/or
Described part or all of sealing light path district is outstanding to the back or the front of rear-projection casing.
5. system according to claim 1 and 2 is characterized in that, also comprises in described each rear-projection casing: the one or more reflective mirrors that are used to change projecting light path.
6. system according to claim 5 is characterized in that, the camera lens front end of described projector, reflective mirror, projection screen are positioned at sealing light path district, and projector's fuselage is positioned at the ventilation and heat district.
7. system according to claim 2 is characterized in that, the position of the camera lens front end of described inner compartment distance projector is provided with the hole that projecting light path is provided.
8. system according to claim 2 is characterized in that the camera lens of described projector is connected by flexible seal ring with inner compartment.
9. system according to claim 3 is characterized in that, the inwall in described sealing light path district is a black; And/or
The tank wall in described ventilation and heat district is provided with ventilation hole; And/or
Described ventilation and heat also comprises in the district: image co-registration device and power supply.
10. system according to claim 1 is characterized in that, described each rear-projection bottom half is provided with universal rolling wheel.
11. system according to claim 1 is characterized in that, the joining place between the adjacent rear-projection casing is fixedly connected by sectional fixture.
12. system according to claim 1 is characterized in that, described each rear-projection casing is provided with sliding guide groove and support level.Projector is installed in the orientation and transfers on the platform, and the orientation transfers platform to be used to adjust the direction and the position of projector.
13. system according to claim 1 is characterized in that, but with projector above, below or the bulb door of switch is set on the corresponding rear-projection casing in side, described bulb door is used to change the bulb of projector.
14. according to claim 1 to 4 each, 7 to 13 each described systems, it is characterized in that described system also comprises:
A plurality of image borders image acquisition device is used for the picture signal to described image co-registration device feedback overlay region, with auxiliary described multiway images fusion device each road picture signal is adjusted automatically.
15. system according to claim 14 is characterized in that, described edge image collector is video camera or digital camera.
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| CN2009102061600A CN102045524A (en) | 2009-10-12 | 2009-10-12 | Super-resolution large-screen display system |
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| CN2009102061600A CN102045524A (en) | 2009-10-12 | 2009-10-12 | Super-resolution large-screen display system |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102496327A (en) * | 2011-12-08 | 2012-06-13 | 重庆市电力公司 | Interactive digital sand table for realizing four-dimensional distribution management |
| CN102540684A (en) * | 2011-11-11 | 2012-07-04 | 浙江海盛科技股份有限公司 | Display device |
| CN103439854A (en) * | 2013-09-13 | 2013-12-11 | 苏州苏鹏多媒体科技有限公司 | Indoor projection system for exhibition area of office building |
| CN103677706A (en) * | 2012-09-24 | 2014-03-26 | 中国人民解放军海军航空工程学院 | Multi simulator comprehensive display control method |
| CN103841343A (en) * | 2012-11-23 | 2014-06-04 | 中强光电股份有限公司 | Projection system and operation method thereof |
| CN104486659A (en) * | 2014-12-05 | 2015-04-01 | 华东师范大学 | Edge blending processing and control system and edge blending processing and control method for playing videos |
| CN106125491A (en) * | 2013-04-30 | 2016-11-16 | Cj Cgv 株式会社 | Many optical projection systems |
| CN106707666A (en) * | 2017-02-03 | 2017-05-24 | 苏州佳世达光电有限公司 | Projection display device |
| CN110602471A (en) * | 2019-10-10 | 2019-12-20 | 上海迪东实业有限公司 | Projection equipment cascade module and method and projection signal cascade method |
| CN112367510A (en) * | 2020-11-19 | 2021-02-12 | 成都信息工程大学 | Multi-projection splicing device and splicing fusion method |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540684A (en) * | 2011-11-11 | 2012-07-04 | 浙江海盛科技股份有限公司 | Display device |
| CN102540684B (en) * | 2011-11-11 | 2014-12-03 | 张亦彬 | Display device |
| CN102496327A (en) * | 2011-12-08 | 2012-06-13 | 重庆市电力公司 | Interactive digital sand table for realizing four-dimensional distribution management |
| CN103677706A (en) * | 2012-09-24 | 2014-03-26 | 中国人民解放军海军航空工程学院 | Multi simulator comprehensive display control method |
| CN103841343A (en) * | 2012-11-23 | 2014-06-04 | 中强光电股份有限公司 | Projection system and operation method thereof |
| CN103841343B (en) * | 2012-11-23 | 2017-03-15 | 中强光电股份有限公司 | Optical projection system and its How It Works |
| CN106125491B (en) * | 2013-04-30 | 2018-03-27 | Cj Cgv 株式会社 | More optical projection systems |
| CN106125491A (en) * | 2013-04-30 | 2016-11-16 | Cj Cgv 株式会社 | Many optical projection systems |
| CN103439854A (en) * | 2013-09-13 | 2013-12-11 | 苏州苏鹏多媒体科技有限公司 | Indoor projection system for exhibition area of office building |
| CN104486659A (en) * | 2014-12-05 | 2015-04-01 | 华东师范大学 | Edge blending processing and control system and edge blending processing and control method for playing videos |
| CN106707666A (en) * | 2017-02-03 | 2017-05-24 | 苏州佳世达光电有限公司 | Projection display device |
| CN110602471A (en) * | 2019-10-10 | 2019-12-20 | 上海迪东实业有限公司 | Projection equipment cascade module and method and projection signal cascade method |
| CN112367510A (en) * | 2020-11-19 | 2021-02-12 | 成都信息工程大学 | Multi-projection splicing device and splicing fusion method |
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Application publication date: 20110504 |