CN101540160A - System for splicing display screens and control method thereof - Google Patents
System for splicing display screens and control method thereof Download PDFInfo
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- CN101540160A CN101540160A CN200910046776A CN200910046776A CN101540160A CN 101540160 A CN101540160 A CN 101540160A CN 200910046776 A CN200910046776 A CN 200910046776A CN 200910046776 A CN200910046776 A CN 200910046776A CN 101540160 A CN101540160 A CN 101540160A
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Abstract
The invention provides a system for splicing display screens and a control method thereof. The system comprises a plurality of spliced display units, a video distributor and a control interface, wherein, each display unit comprises a display screen and a video processor board; the display screen is connected with the video processor board via a display interface; the video processor board is connected with the control interface; and a video processing module is connected with a control module via a UART (universal asynchronous receiver/transmitter) interface and an I2C (inter-integrated circuit) interface. The control method comprises the following steps: accomplishing the original task of an I2C bus through a UART bus to prevent the system from stopping responding to user commands when the I2C bus of the system does not work properly; and automatically switching to the control mode of the I2C bus to prevent the video processing module from being affected when the I2C bus resumes. The invention has the advantages of high startup speed, high stability, simple development and non-interacting processing units; the tasks are smooth and stable; and in addition, the invention has the advantages of convenient maintenance and replacement.
Description
Technical field
The invention belongs to mosaic screen display technique field, particularly a kind of system for splicing display screens and control method thereof.
Background technology
China Patent No. is multi-screen splicing method and the device of 200810026939.X, this multi-screen splicing apparatus comprises image-forming module, control module and image segmentation concatenation module, control module is used for adjusting according to the bandwidth criteria of the image delivery outlet of spliced total resolution and GPU the output refresh rate of GPU, allow the output resolution ratio of GPU meet the requirement of splicing total resolution, image segmentation concatenation module segmenting video data and in the splicing of the realization standard output down synchronously of the standard pixel clock of control module.It can improve the output resolution ratio of GPU, realizes high-resolution multi-screen splicing.But this device is a computer based system, and it is higher to have a cost, and toggle speed is slower, the shortcoming that stability is not high yet.
And China Patent No. is spliced circuit module and a control method thereof in the described LCD giant-screen of 200710042286.X, it is the system of a bus type, in case system has a graphics processing unit to go wrong, can have influence on the graphics processing unit that is connected to its back level.
In addition, in existing system for splicing display screens,, can't carry out image effect and strengthen owing to be subject to the restriction of single computing power.Its image effect is barely satisfactory, and the picture quality of the single display unit in the system for splicing display screens can not show a candle to the picture quality of the single display screen in the common unit.
In addition, in the existing system for splicing display screens, because control module needs the control of video processing module, so need foundation control channel between the two.Usually video processing module has the I2C control interface, is the interface that is used for accepting external control.In initial designs, control module is by I2C control of video processing module, but in debug process, find owing to carry on the I2C bus a plurality of equipment, so when certain other equipment on the I2C bus go wrong, whole piece I2C bus is in the state of cisco unity malfunction, cause this moment control module can not the control of video processing module, system's cisco unity malfunction.
In addition, in the physical construction of existing system for splicing display screens, also there are these defectives: at first, the display screen of each display unit is fastened on crossbearer and the perpendicular frame by screw simultaneously, and screw burrows to handle and easily screen caused damage, in the use, if certain display screen breaks down, whole frame need be unloaded, could dismantle certain display screen again, cause display screen to be safeguarded and replace very trouble; Secondly; consider the surface smoothness and the aesthetics of tiled display equipment, usually a big face glass can be installed before display screen, and use fastening easy damage face glass of screw and display screen; seeing through face glass also can see and slit between display screen and display screen still influence aesthetics.How a kind of system for splicing display screens is provided,, also becomes one of those skilled in the art's technical issues that need to address to overcome these defectives.
Summary of the invention
One of purpose of the present invention is, provides that a kind of toggle speed is fast, good stability, the simple system for splicing display screens of exploitation.
Another object of the present invention is to, provide a kind of and can carry out the system for splicing display screens that image effect strengthens.
A further object of the present invention is, a kind of stable, smooth system for splicing display screens of work is provided.
A further object of the present invention is, is difficult for causing damage, maintenance to replace system for splicing display screens easily when a kind of fixedly display screen and face glass are provided.
A kind of system for splicing display screens, comprise: the display unit of a plurality of splicings, video distributor and control interface, each display unit comprises display screen and Video processing plate, links to each other by display interface between described display screen and the Video processing plate, and described Video processing plate is connected with described control interface.
Further, described Video processing plate comprises video processing module and the control module that is connected by communication interface, described video processing module is connected with described display screen by display interface, is connected with the I2C interface by the UART interface between described video processing module and the control module.
Further, described video processing module comprise by control bus be connected with data bus as lower unit:
The numeral input processing unit is used to provide the digital of digital video data input interface;
The analog input processing unit is used for the analog video data input interface;
The Video processing buffer zone is used to cushion the digital of digital video data of input;
Video processing unit is used for reading and handling from described Video processing buffer zone the digital of digital video data and the output of input;
Output control unit is connected with described display screen by display interface, is used for that corresponding display screen is controlled and exported to the video data of video processing unit input and shows;
The I2C control module, it includes the I2C interface that is connected with described control interface;
The UART control module, it includes the UART interface that is connected with described control interface.
Further, the digital of digital video data input interface of described digital input processing unit is HDMI or DVI interface, and the analog video data input interface of described analog input processing unit is VGA, S-VIDEO interface.
Further, the control module of described each described Video processing plate is connected with described control interface by the RS485 interface.
Further, be provided with video in the described video processing unit and strengthen module, described video strengthens module and comprises a plurality of or whole with in the lower module that are connected on described data bus and the control bus:
Three-dimensional go interlacing module, self-adaptation dynamic noise reduction module, nonlinear images sharpening module, image color strengthen module, based on the dynamic contrast adjusting module of picture material, based on the dynamic brightness adjusting module of picture material.
Further, also comprise casing, frame, face glass, described frame is made up of several perpendicular framves and several crossbearer, described perpendicular frame is fixed on the casing, be fixed with several crossbearers on the every perpendicular frame, on the every crossbearer and each display screen back side all is fixed with the hasp that cooperatively interacts, and described display screen is fixedly connected on the described crossbearer by described hasp, and described face glass is fixedly connected on the described casing by double sticky tape.
Further, per two described perpendicular row that are configured to, there are two horizontal hasps at each display screen back side, and be fixedly connected with two crossbearers, described hasp comprises substrate and is located at described suprabasil at least two row's fasteners, described fastener is mushroom and comprises shaft and column cap, and the column cap spacing of adjacent fastener is less than the stigma width of each fastener, and described face glass surface is provided with the baking vanish band at the marginal position place of corresponding each display screen.
The present invention also provides a kind of system for splicing display screens control method, adopts above-mentioned system for splicing display screens, may further comprise the steps:
1) control module of the Video processing plate of each display unit obtains order from control interface;
2) described control module is to sending this order by the I2C bus to video processing module;
3) described video processing module with command execution results information to described control module;
4) described control module judges according to command execution results information whether this order runs succeeded, if success then finish, otherwise execution in step 5);
5) use the UART bus to send this order to described video processing module.
Further, after described step 5), after this command execution success that described UART bus sends, switch back the total line traffic control of I2C, when obtaining newer command, go to step 2).
The present invention has the following advantages:
1, adopt system for splicing display screens provided by the invention, it has, and toggle speed is fast, good stability, exploitation is simple, processing unit can interactive advantage.
2, treatment of picture is finished by each Video processing plate respectively, by carrying out the enhancing of image effect effectively.
3, adopt UART interface and I
2The mode of this double nip of C interface guarantees the stable and smooth of system for splicing display screens work.
4, this display screen fixed sturcture has and is difficult for causing damage, maintenance to replace advantage easily.
Further specify the present invention below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is a system for splicing display screens embodiment block diagram of the present invention;
Fig. 2 is a Video processing plate structure block diagram in the embodiment of the invention;
Fig. 3 is the internal frame diagram of video processing module in the embodiment of the invention;
Fig. 4 is a system for splicing display screens control method embodiment process flow diagram of the present invention;
Fig. 5 is the structural representation of casing frame in the system for splicing display screens of the present invention;
Fig. 6 is for loading onto the synoptic diagram behind the display screen in Fig. 5 structure;
Fig. 7 is for loading onto the synoptic diagram behind the face glass in Fig. 6 structure;
Fig. 8 is the syndeton synoptic diagram of display screen in the splicing system of the present invention and crossbearer.
Embodiment
As shown in Figure 1, a kind of system for splicing display screens comprises display unit, video distributor and the control interface of a plurality of splicings, and each display unit comprises display screen and Video processing plate, links to each other by display interface between wherein said display screen and the Video processing plate.
As shown in Figure 2, described Video processing plate comprises video processing module (can adopt asic chip) and control module (can adopt the ARM chip), is connected with the I2C interface by the UART interface between described video processing module and the control module.Described by UART interface and I
2The mode of this double nip of C interface guarantees the stable and smooth of system for splicing display screens work.
Wherein, the control module of described each described Video processing plate is connected with described control interface by the RS485 interface.
Described Video processing plate carries out video control by the control signal of described control interface input.This control signal comprises sets the video data that corresponding Video processing plate need be handled.For example, 3 * 3 to be example, need content displayed by the display screen of setting each Video processing plate correspondence, the vedio data that this Video processing plate only need be handled corresponding to this screen position place gets final product.For example the display unit of setting the upper left corner by described control interface shows 1/9th the video image that is positioned at the upper left corner, and the Video processing plate of the display unit in this upper left corner only need be handled corresponding video data and get final product.Also can smoothly handle even handle high-resolution video data like this, and can be in the video data resolution of correspondence during less than the resolution of the display screen of display unit, by the interpolation calculation of video processing module, to strengthen the display effect of image.This mode of carrying out individual processing after the setting that video data is distributed, when handling high-resolution video data, advantages such as the assembly screen that need not just well to finish by high performance graphics processing unit image shows, it has, and cost is low, toggle speed fast, stability is high, exploitation is simple, video effect is good, processing unit can not interact.
As shown in Figure 3, described video processing module comprise by control bus be connected with data bus as lower unit:
The numeral input processing unit is used to provide the digital of digital video data input interface, as HDMI, DVI interface etc.;
The analog input processing unit is used for the analog video data input interface, as VGA, CVBS (Composite VideoBroadcast Signal composite video broadcast singal), S-VIDEO interface etc.
The Video processing buffer zone is used to cushion the digital of digital video data of input;
Video processing unit is used for reading and handling from described Video processing buffer zone the digital of digital video data and the output of input;
Output control unit is used for that corresponding display screen is controlled and exported to the video data of video processing unit input and shows, adopts the LVDS output control unit in the present embodiment.
The I2C control module, it includes the I2C interface that is connected with described control interface, is used for the I2C signal controlling.
The UART control module, it includes the UART interface that is connected with described control interface, is used for the UART signal controlling.
Wherein, be provided with video in the described video processing unit and strengthen module.Described video strengthens module and comprises a plurality of or whole with in the lower module that are connected on described data bus and the control bus:
Three-dimensional go interlacing module, self-adaptation dynamic noise reduction module, nonlinear images sharpening module, image color strengthen module, based on the dynamic contrast adjusting module of picture material, based on the dynamic brightness adjusting module of picture material.
As shown in Figure 4, a kind of system for splicing display screens control method adopts above-mentioned system for splicing display screens, may further comprise the steps:
1) control module of the Video processing plate of each display unit obtains order from control interface; This order can owing to the user by being connected the control terminal input on the control interface, this order can be the content that is used to set the display unit display image, display effect etc. is adjusted, strengthened to image display effect;
2) described control module is to sending this order by the I2C bus to video processing module;
3) described video processing module with command execution results information to described control module;
4) described control module judges according to command execution results information whether this order runs succeeded, if success then finish, otherwise execution in step 5);
5) use the UART bus to send this order to described video processing module.
Wherein, after described step 5), after this command execution success that described UART bus sends, switch back the total line traffic control of I2C.When obtaining newer command, go to step 2).Because the UART control interface of described video processing module is originally as receiving data, when sending control information, video processing module can make that the processing speed of video processing module is affected slightly so use the UART interface when described control module, therefore after the I2C interface is working properly, change back I2C interface with control mode.
The advantage of this system for splicing display screens control method is, when the work of the I2C of system bus is undesired, finishes the work of original I2C bus by the UART bus, and the system that makes can not stop the response to user command; When the work of I2C bus recovers just often, the control mode of the I2C bus that automaticallyes switch back again makes the processing of video processing module can not be affected.
Fig. 5 to Fig. 7 is respectively the structural representation of the casing frame of the system for splicing display screens in the present embodiment, the synoptic diagram after loading onto the synoptic diagram behind the display screen and loading onto face glass.It is that example describes that present embodiment is still formed splicing system with 3 * 3 display screens; but not as limit; the system for splicing display screens that the display screen of any other quantity and arrangement mode constitutes also can splice according to the structure of present embodiment, therefore is also contained within protection scope of the present invention.
In the present embodiment, system for splicing display screens comprises casing 11, frame 12, nine display screens 13 and face glasss 14.As shown in Figure 5, frame 12 is made up of the perpendicular frame 121 of the six roots of sensation and 18 crossbearers 122, per two perpendicular framves 121 constitute row, and descend two ends to be fixed on the casing 11 thereon by screw, be fixed with six roots of sensation crossbearer 122 by screw on two perpendicular framves 121 of each row, per two crossbearers 122 constitute one group, and are fixing for a display screen 13.Fig. 6 illustrates the synoptic diagram of loading onto behind the display screen 13, and dotted line is represented perpendicular frame 121 and crossbearer 122.By said structure, two perpendicular framves 121 of each row are connected with casing 11 individually, after some display screens 13 break down, only need two perpendicular framves 121 of dismounting next column separately, just can change display screen 13, and need not whole frame 12 is taken apart, the maintenance of being convenient to display screen 13 is replaced.
Wherein, on the every crossbearer 122 and each display screen 13 back side all are fixed with the hasp 17 that cooperatively interacts, and display screen 13 is fixed on the crossbearer 122 by hasp 17.Wherein, this hasp 17 is a kind of male and female buckle, preferably, this male and female buckle further comprises substrate 171 and is located at the row of at least two in the substrate 171 fastener 172 that ask for an interview Fig. 8, this fastener 172 is mushroom, the column cap 174 that comprises narrower shaft 173 and broad, the spacing of adjacent fastener column cap 174 is less than the width of each fastener column cap 174, and the arrangement of fastener 172 can be that two rows constitute a hasp group, and the material of fastener 172 can be to have certain flexible plastics.Like this, after hasp 17 snappings at the hasp 17 on crossbearer 122 and display screen 13 back sides, column cap 174 is embedded in the shaft 173 of two fasteners 172, and need certain pulling force column cap 174 could be pulled out, two hasps 17 are separated, and by said structure, display screen 13 can be fixed on the crossbearer 122 firmly, be fixed on the frame thereby avoided the use screw to punch display screen 13, cause display screen to cause the situation of damage to take place.
Face glass 14 in the present embodiment is fixedly to be affixed on the casing 11 by double sticky tape, only need paste and get final product at the frame place of face glass 14, double sticky tape can adopt 5952 industrial double sticky tapes of 3M company, other have certain cohesive force, the double sticky tape that face glass 14 firmly can be sticked on the casing 11 all can be used among the present invention, like this, just can avoid using screw to punch face glass is fixed on the casing, cause face glass to cause the situation of damage to take place, also increased the surface smoothness and the aesthetic property of face glass.
Consider the gap that may exist between each display screen 13, also can see the frame of each display screen 13 by transparent glass panel 14, and the influence that the outward appearance of equipment integral is caused, handle through baking vanish at the marginal position of corresponding each display screen 13 on face glass of the present invention 14 surfaces, form the baking vanish band 141 of black or other colors, ask for an interview the oblique line part among Fig. 7,, increased the aesthetic property of equipment integral with the gap between the covering display screen 13 and the frame of each display screen 13.
In another embodiment, tiled display equipment has 5 * 5 totally two ten five display screens, the perpendicular row that are configured to of each root in the frame, and crossbearer is fixed on the perpendicular frame of row, and per two crossbearers constitute one group, fix for a display screen.
Above-described embodiment only is used to illustrate technological thought of the present invention and characteristics, its purpose makes those skilled in the art can understand content of the present invention and is implementing according to this, when can not only limiting claim of the present invention with present embodiment, be all equal variation or modifications of doing according to disclosed spirit, still drop in the claim of the present invention.
Claims (10)
1, a kind of system for splicing display screens, it is characterized in that comprising: the display unit of a plurality of splicings, video distributor and control interface, each display unit comprises display screen and Video processing plate, link to each other by display interface between described display screen and the Video processing plate, described Video processing plate is connected with described control interface.
2, system for splicing display screens according to claim 1, it is characterized in that: described Video processing plate comprises video processing module and the control module that is connected by communication interface, described video processing module is connected with described display screen by display interface, is connected with the I2C interface by the UART interface between described video processing module and the control module.
3, system for splicing display screens according to claim 2 is characterized in that: described video processing module comprise by control bus be connected with data bus as lower unit:
The numeral input processing unit is used to provide the digital of digital video data input interface;
The analog input processing unit is used for the analog video data input interface;
The Video processing buffer zone is used to cushion the digital of digital video data of input;
Video processing unit is used for reading and handling from described Video processing buffer zone the digital of digital video data and the output of input;
Output control unit is connected with described display screen by display interface, is used for that corresponding display screen is controlled and exported to the video data of video processing unit input and shows;
The I2C control module, it includes the I2C interface that is connected with described control interface;
The UART control module, it includes the UART interface that is connected with described control interface.
4, system for splicing display screens according to claim 3, it is characterized in that: the digital of digital video data input interface of described digital input processing unit is HDMI or DVI interface, and the analog video data input interface of described analog input processing unit is VGA, S-VIDEO interface.
5, system for splicing display screens according to claim 4 is characterized in that: the control module of described each described Video processing plate is connected with described control interface by the RS485 interface.
6, system for splicing display screens according to claim 5 is characterized in that: be provided with video in the described video processing unit and strengthen module, described video strengthens module and comprises a plurality of or whole with in the lower module that are connected on described data bus and the control bus:
Three-dimensional go interlacing module, self-adaptation dynamic noise reduction module, nonlinear images sharpening module, image color strengthen module, based on the dynamic contrast adjusting module of picture material, based on the dynamic brightness adjusting module of picture material.
7, system for splicing display screens according to claim 6, it is characterized in that: also comprise casing, frame, face glass, described frame is made up of several perpendicular framves and several crossbearer, described perpendicular frame is fixed on the casing, be fixed with several crossbearers on the every perpendicular frame, on the every crossbearer and each display screen back side all is fixed with the hasp that cooperatively interacts, and described display screen is fixedly connected on the described crossbearer by described hasp, and described face glass is fixedly connected on the described casing by double sticky tape.
8, system for splicing display screens according to claim 7, it is characterized in that: per two described perpendicular row that are configured to, there are two horizontal hasps at each display screen back side, and be fixedly connected with two crossbearers, described hasp comprises substrate and is located at described suprabasil at least two row's fasteners, described fastener is mushroom and comprises shaft and column cap, and the column cap spacing of adjacent fastener is less than the stigma width of each fastener, and described face glass surface is provided with the baking vanish band at the marginal position place of corresponding each display screen.
9, a kind of system for splicing display screens control method adopts the described system for splicing display screens of arbitrary claim in the claim 2 to 8, it is characterized in that may further comprise the steps:
1) control module of the Video processing plate of each display unit obtains order from control interface;
2) described control module is to sending this order by the I2C bus to video processing module;
3) described video processing module with command execution results information to described control module;
4) described control module judges according to command execution results information whether this order runs succeeded, if success then finish, otherwise execution in step 5);
5) use the UART bus to send this order to described video processing module.
10, system for splicing display screens control method according to claim 9 is characterized in that: after described step 5), after this command execution success that described UART bus sends, switch back the total line traffic control of I2C, when obtaining newer command, go to step 2).
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| CN200910046776A CN101540160A (en) | 2009-02-27 | 2009-02-27 | System for splicing display screens and control method thereof |
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| CN101872605A (en) * | 2010-06-28 | 2010-10-27 | 浙江红苹果电子有限公司 | Method and device for jointing display screens |
| CN101916556A (en) * | 2010-07-28 | 2010-12-15 | 湖南创图视维科技有限公司 | Three-dimensional screen splicing display system and method |
| CN102542933A (en) * | 2012-01-16 | 2012-07-04 | 深圳市创维群欣安防科技有限公司 | Windowing controller based on large screen liquid crystal splicing display |
| CN102843522A (en) * | 2011-06-24 | 2012-12-26 | 北京彩讯科技股份有限公司 | Video stitching processing card based on PCIE, as well as control system and control method for video stitching processing card |
| CN103020894A (en) * | 2012-12-04 | 2013-04-03 | 江苏清投视讯科技有限公司 | Mosaic image processor |
| CN103198808A (en) * | 2013-04-18 | 2013-07-10 | 广州市观泰数字显示设备有限公司 | Liquid crystal spliced wall screen display control system |
| CN103645874A (en) * | 2013-12-19 | 2014-03-19 | 广东威创视讯科技股份有限公司 | Network ring-connection device and control method of splicing wall |
| CN103886847A (en) * | 2014-03-20 | 2014-06-25 | 深圳市创维群欣安防科技有限公司 | Windowing controller based on tiled display of large-screen liquid crystal and control method thereof |
| CN104112441A (en) * | 2013-04-18 | 2014-10-22 | 深圳市迈普视通科技有限公司 | Multi-source tiled display system and display screen gap aberration eliminating method |
| WO2016145759A1 (en) * | 2015-03-17 | 2016-09-22 | 京东方科技集团股份有限公司 | Package substrate, display panel and curved display panel |
| CN106162026A (en) * | 2015-04-21 | 2016-11-23 | 佛山芯珠微电子有限公司 | A kind of HDMI IP system and architecting method thereof |
| WO2024051386A1 (en) * | 2022-09-07 | 2024-03-14 | 京东方科技集团股份有限公司 | Tiled display screen, and control system for tiled display screen |
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| CN101872605A (en) * | 2010-06-28 | 2010-10-27 | 浙江红苹果电子有限公司 | Method and device for jointing display screens |
| CN101916556A (en) * | 2010-07-28 | 2010-12-15 | 湖南创图视维科技有限公司 | Three-dimensional screen splicing display system and method |
| CN102843522B (en) * | 2011-06-24 | 2015-12-09 | 北京彩讯科技股份有限公司 | The video-splicing transaction card of Based PC IE, its control system and control method |
| CN102843522A (en) * | 2011-06-24 | 2012-12-26 | 北京彩讯科技股份有限公司 | Video stitching processing card based on PCIE, as well as control system and control method for video stitching processing card |
| CN102542933A (en) * | 2012-01-16 | 2012-07-04 | 深圳市创维群欣安防科技有限公司 | Windowing controller based on large screen liquid crystal splicing display |
| CN103020894A (en) * | 2012-12-04 | 2013-04-03 | 江苏清投视讯科技有限公司 | Mosaic image processor |
| CN103198808A (en) * | 2013-04-18 | 2013-07-10 | 广州市观泰数字显示设备有限公司 | Liquid crystal spliced wall screen display control system |
| CN104112441A (en) * | 2013-04-18 | 2014-10-22 | 深圳市迈普视通科技有限公司 | Multi-source tiled display system and display screen gap aberration eliminating method |
| CN104112441B (en) * | 2013-04-18 | 2016-08-10 | 深圳市迈普视通科技有限公司 | The removing method of aberration between a kind of multiple source splice displaying system and display screen seam |
| CN103645874A (en) * | 2013-12-19 | 2014-03-19 | 广东威创视讯科技股份有限公司 | Network ring-connection device and control method of splicing wall |
| CN103886847A (en) * | 2014-03-20 | 2014-06-25 | 深圳市创维群欣安防科技有限公司 | Windowing controller based on tiled display of large-screen liquid crystal and control method thereof |
| WO2016145759A1 (en) * | 2015-03-17 | 2016-09-22 | 京东方科技集团股份有限公司 | Package substrate, display panel and curved display panel |
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| CN106162026A (en) * | 2015-04-21 | 2016-11-23 | 佛山芯珠微电子有限公司 | A kind of HDMI IP system and architecting method thereof |
| WO2024051386A1 (en) * | 2022-09-07 | 2024-03-14 | 京东方科技集团股份有限公司 | Tiled display screen, and control system for tiled display screen |
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