CN101894521B - Dual computer hot-standby system of LED display screen - Google Patents
Dual computer hot-standby system of LED display screen Download PDFInfo
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- CN101894521B CN101894521B CN201010238460XA CN201010238460A CN101894521B CN 101894521 B CN101894521 B CN 101894521B CN 201010238460X A CN201010238460X A CN 201010238460XA CN 201010238460 A CN201010238460 A CN 201010238460A CN 101894521 B CN101894521 B CN 101894521B
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Abstract
The invention relates to a dual computer hot-standby system of an LED display screen, which comprises two video distribution devices and m scanning card arrays. Each video distribution device is respectively connected with the m scanning card arrays, the received video data are decoded, accessed, recombined and packed and are respectively output to the m scanning card arrays through m paths of parallel interfaces; and each path of signals output by the video distribution devices is transmitted to n scanning cards forming the scanning card array, each scanning card intercepts data for setting regions of pixel points, and the data intercepted respectively are subjected to decoding, accessing, data processing and distribution and output to the LED display screen. By adopting two sets of separate data channels, the invention can realize heat switching of the system when some sets of data channels are in trouble, thereby the stability and the reliability of the system is improved and the ratio of manual maintenance is also greatly reduced.
Description
Technical field
The present invention relates to a kind of LED display hot backup system, particularly a kind of LED display dual-machine hot backup system.
Background technology
Universal day by day along with LED display, people are also more and more harsher to the requirement of LED display, wherein the stability of LED display operation be one most important also be most basic requirement.No matter how gorgeous the display effect of LED display is, in case the factors of instability occurred in the control link, the image of entire display screen will be had a greatly reduced quality in people mind.Because environment for use and the condition of LED display have nothing in common with each other, sometimes even very abominable, so more be necessary to be placed on a vital position with improving the stability that LED display moves.
The Chinese invention patent communique discloses " a kind of LED video control system " (open day on April 16th, 2008; Notification number: CN201048032Y); This method is sent the identical video data of two-way through Video Controller; Give receiving card through port A and port B, make receiving card form loop, as shown in Figure 1.Under the normal condition, what system received is the data of port A, when any place's transmission line breaks down; System can automatically switch; Make the place's of breaking down receiving card afterwards receive data, realized the Hot Spare of video data, improved the stability of The whole control system from port B.Yet because each receiving card has only two data ports, A goes into that B goes out or B goes into A and goes out, and when having transmission line more than a place to break down in the system, the control area between the receiving card that breaks down can't operate as normal.
Summary of the invention
The technical matters that the present invention will solve provide a kind of still can the self-adaptive recovery data path when multilink goes wrong simultaneously when the LED display control system, make video show impregnable LED display dual-machine hot backup system.
In order to solve the problems of the technologies described above, LED display dual-machine hot backup system of the present invention comprises two video distribution device, m scanning card arrays; Each video distribution device is connected with m scanning card arrays respectively, and the video data that receives is decoded, after access, reorganization and the packing, exported to m scanning card arrays respectively through the interface that the m road is parallel; Every road signal of video distribution device output is transferred to n the scanning card that constitutes scanning card arrays; The data in pixel zone are set in each scanning card intercepting, and the data of intercepting are decoded, exported LED display to after access, data processing and the distribution separately.
The present invention has adopted two cover separate data channels, when a certain sets of data channels breaks down, can realize the hot-swap of system, has improved the stability and the reliability of system, has also significantly reduced the probability of manual maintenance.
Each scanning card in the described scanning card arrays adopts the method that connects in the same way.
The data of described two video distribution device output are imported the two-way input channel A1 and the A2 of first scanning card of each scanning card arrays respectively, two-way input channel A1 and A2 that the two paths of data output B1 of first scanning card and B2 connect second scanning card respectively; The rest may be inferred, two-way input channel A1 and A2 that the two paths of data output B1 of n-1 scanning card and B2 connect last scanning card respectively.
It is simple to operation that this kind connects the method connected mode in the same way, and after a certain cover video frequency transmitter or video distribution device went wrong, system can automatically switch to an other covering device and not influence LED display and normally show; When the transmission line between the scanning card breaks down (as long as 2 data input channels of scanning card or 2 input transmission lines are not out of order simultaneously), scanning card can automatically switch to an other circuit-switched data input channel and not influence LED display and normally show.Its defective is that when a certain block scan card broke down, it exported later scanning card with cisco unity malfunction, the phenomenon of large stretch of blank screen may occur.
Each scanning card in the described scanning card arrays adopts the method that oppositely connects.
First scanning card input channel A1 of each scanning card arrays and the two paths of data of A2 are taken from the output of first video distribution device and the data output B2 of second scanning card respectively; The two paths of data of second scanning card input channel A1 and A2 is taken from the data output B1 of first scanning card and the data output B2 of the 3rd scanning card respectively; The two paths of data of the 3rd scanning card input channel A1 and A2 is taken from the data output B1 of second scanning card and the data output B2 of the 4th scanning card respectively; The rest may be inferred; The two paths of data of n-1 scanning card input channel A1 and A2 is taken from the data output B1 of n-2 scanning card and the data output B2 of last scanning card respectively, and the two paths of data of last scanning card input channel A1 and A2 is taken from the output that the data of n-1 scanning card are exported B1 and second video distribution device respectively.
This kind oppositely connects the method connected mode and adopts loop design, and after a certain cover video frequency transmitter or video distribution device went wrong, system can automatically switch to an other covering device and not influence LED display and normally show; When the transmission line between the scanning card breaks down input end and the output terminal of scanning card (as long as do not go wrong simultaneously), scanning card can automatically switch to other one the tunnel and import and do not influence LED display and normally show.When a certain block scan card breaks down, have only the viewing area of this scanning card control can not show normally that other viewing areas are all intact.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done further explain.
Fig. 1 is the structured flowchart of the LED display dual-machine hot backup system of background technology.
Fig. 2 is the structured flowchart of LED display dual-machine hot backup system of the present invention.
Fig. 3 is the scanning card synoptic diagram.
Fig. 4 is a scanning card arrays connection layout in the same way.
Fig. 5 is the reverse connection layout of scanning card arrays.
Fig. 6 is the video transmission connection layout based on a main frame, a video distributor and two video frequency transmitters.
Fig. 7 is the video transmission connection layout based on two main frames and two video frequency transmitters.
Fig. 8 is the video transmission connection layout based on a main frame and a video frequency transmitter.
Fig. 9 is the video transmission connection layout based on a main frame.
Figure 10 is the video transmission connection layout based on two main frames.
Figure 11 is the kilomega network video transmission connection layout based on two main frames.
Figure 12 is the LED display dual-machine hot backup system block diagram based on kilomega network and LVDS transmission mode.
Figure 13 is based on the scanning card arrays of LVDS transmission mode connection layout in the same way.
Figure 14 is the optical fiber video transmission connection layout based on a main frame and a video distributor.
Figure 15 is the LED display dual-machine hot backup system block diagram based on optical fiber and LVDS transmission mode.
Figure 16 is based on the reverse connection layout of the scanning card arrays of LVDS transmission mode.
Embodiment
As shown in Figure 2, LED display dual-machine hot backup system of the present invention comprise two video distribution device 21,22 and m scanning card arrays 3-1,3-2 ..., 3-m; Video distribution device 21,22 respectively with m scanning card arrays 3-1,3-2 ..., 3-m connects; With the video data that receives decode, after access, reorganization and the packing, m road parallel interface through separately and transmission line 4a-1,4a-2 ..., 4a-m, 4b-1,4b-2 ..., 4b-m exports to m scanning card arrays respectively; Each road signal of video distribution device 21,22 outputs is transferred to n the scanning card that constitutes scanning card arrays; The data in pixel zone are set in each scanning card intercepting; With the data of intercepting separately decode, access, data processing and distribution, and export LED display to.
Video distribution device is with after the data processing such as the video data process decoding that receives, reorganization, through the parallel interface output in m road.If each road interface can a cascade n scanning card through transmission line, then each video distribution device at most can cascade m * n scanning card.
If the size of LED display is that (E is that the pixels across of LED display is counted to E * F pixel; F is vertical pixel number of LED display); L * V pixel of monolithic scanning card control; Then each scanning card arrays has n=E/L scanning card, and each video distribution device can have m scanning card arrays (m=F/V) at most.
As shown in Figure 3, each scanning card all has two to overlap independently data input channel 6 (A1 and A2) and data output channel 7 (B1 and B2).
The typical case of scanning card arrays connects method has two kinds: Fig. 4 is referred to as to connect in the same way method; Fig. 5 is referred to as oppositely to connect method.Certainly, also can derive other the method that connects thus.
As shown in Figure 4, the data of two video distribution device outputs are imported two-way input channel A1 and the A2 of first scanning card 3-1-1 respectively through transmission line 4a-1 and 4b-1; Two-way input channel A1 and A2 that the two paths of data output B1 of first scanning card 3-1-1 and B2 meet second scanning card 3-1-2 respectively; Two-way input channel A1 and A2 that the two paths of data output B1 of second scanning card 3-1-2 and B2 meet the 3rd scanning card 3-1-3 respectively; The rest may be inferred, two-way input channel A1 and A2 that the two paths of data output B1 of n-1 scanning card and B2 meet last scanning card 3-1-n respectively.
As shown in Figure 5, the input channel A1 of first scanning card 3-1-1 and the two paths of data of A2 are taken from transmission line 4a-1 that the output of first video distribution device connect and the data output B2 of second scanning card 3-1-2 respectively; The two paths of data of second scanning card 3-1-2 input channel A1 and A2 is taken from the data output B1 of first scanning card 3-1-1 and the data output B2 of the 3rd scanning card 3-1-3 respectively; The two paths of data of the 3rd scanning card 3-1-3 input channel A1 and A2 is taken from the data output B1 of second scanning card 3-1-2 and the data output B2 of the 4th scanning card respectively; The rest may be inferred; The two paths of data of n-1 scanning card input channel A1 and A2 is taken from the data output B1 of n-2 scanning card and the data output B2 of last scanning card 3-1-n respectively, and the data that the two paths of data of last scanning card 3-1-n input channel A1 and A2 is taken from n-1 scanning card respectively export B1 and second video distribution device exported the transmission line 4b-1 that is connect.
As shown in Figure 6, the video data of main frame 9 outputs converts synchronous two-path video data fully in real time to through video distributor 8.The two-path video data are transferred to video distribution device 21,22 through video frequency transmitter 11,12 respectively.
As shown in Figure 7, the video data of two main frame 91,92 outputs is transferred to video distribution device 21,22 through video frequency transmitter 11,12 respectively.
As shown in Figure 8, the video data of main frame output is transferred to video distribution device 21 through video frequency transmitter 1, and video distribution device 21 synchronously is transferred to video distribution device 22 in real time with the video data of receiving.
As shown in Figure 9, the video Data Transmission of main frame 9 outputs is given video distribution device 21, and video distribution device 21 synchronously is transferred to video distribution device 22 in real time with the video data of receiving.
Shown in figure 10, the video data of two main frame 91,92 outputs is transferred to video distribution device 21,22 respectively.
Embodiment 1:
Video source adopts two platform independent main frames 191,192, and video frequency transmitter adopts kilomega network to send card 111,112, requires the video source in the two platform independent main frames 191,192 synchronously real-time, shown in figure 11 fully.This scheme has realized the double copies of main frame, has further improved the stability of system.Certainly, the extras that need synchronously in real time of video source are controlled two main frames.
LED display dual-machine hot backup system block diagram is shown in figure 12; Video distribution device adopts kilomega network to receive divider 121,122; The transmission of LVDS interface is adopted in the output of video distribution device, and transmission line adopts the LVDS transmission line, and the LVDS transmission line is also adopted in the connection between the scanning card.
Control the display screen of 1280 * 960 pixels if desired; Wherein the monolithic scanning card is controlled the casing of 64 * 64 pixels; Get m=960/64=15 so, during n=1280/64=20, promptly system controls 20 * 15 casings altogether; When a video distribution device can not satisfy 15 groups of LVDS signals and exports simultaneously; Can adopt many video distribution device and usefulness, receive divider such as a kilomega network and can export 8 groups of parallel LVDS signals, then use two kilomega networks to receive the requirement that divider can satisfy 15 groups of parallel LVDS signal outputs.
The main frame output resolution ratio is set to 1280 * 102460Hz; Kilomega network sends card the data that receive is carried out data decode, access, reorganization and packing; Through the two-way kilomega network video data is sent to video distribution device, kilomega network receive divider with data decode, access, reorganization and packing be through the output of multi-set parallel LVDS interface.The area of every group of LVDS output is 1280 * 64 pixels, needs 15 groups of parallel LVDS output interfaces altogether.
Every group of LVDS signal is transferred to 20 scanning card, each scanning card intercepting 64 * 64 pixels zone.The scanning card arrays connected mode adopts and connects method in the same way, and is shown in figure 13.
Each scanning card, with the data of intercepting separately decode, step such as access, data processing and distribution, the LED display desired signal exports the screen body to the most at last, and display screen is lighted.
Embodiment 2:
Video source adopts 9, one video distributors 8 of a platform independent main frame, and is shown in figure 14.Wherein, the function of video distributor 8 is to convert one road video data to synchronous two-path video data fully in real time.
The LED display dual-machine hot backup system is shown in figure 15; Video frequency transmitter adopts optical fiber to send card 211,212; Video distribution device adopts optical fiber to receive divider 221,222; The transmission of LVDS interface is adopted in the output of video distribution device, and transmission line adopts the LVDS transmission line, and the LVDS transmission line is also adopted in the connection between the scanning card.
Control the display screen of 1024 * 768 pixels if desired, wherein the casing of monolithic scanning card control 128 * 64 pixels is got m=768/64=12 so, and during n=1024/128=8, promptly system controls 8 * 12 casings altogether.When a video distribution device can not satisfy 12 groups of LVDS signals and exports simultaneously; Can adopt many video distribution device and usefulness; Receive divider such as an optical fiber and can export 8 groups of parallel LVDS signals, then use two optical fiber to receive the requirement that divider can satisfy 12 groups of LVDS signal outputs.
Video source is set to 1280 * 102460Hz; Optical fiber sends card the data that receive is carried out data decode, access, reorganization and packing; Through the 2.5G optic module video data is sent to optical fiber and receives divider, optical fiber receive divider with data decode, access, reorganization and packing be through the output of multi-set parallel LVDS interface.The area of every group of LVDS output is 1024 * 64 pixels, needs 12 groups of parallel LVDS output interfaces altogether.
Every group of LVDS signal is transferred to 8 scanning card, each scanning card intercepting 128 * 64 pixels zone.The scanning card arrays connected mode adopts and oppositely connects method, and is shown in figure 16.
Claims (3)
1. a LED display dual-machine hot backup system is characterized in that comprising two video distribution device, m scanning card arrays; Each video distribution device is connected with m scanning card arrays respectively, and the video data that receives is decoded, after access, reorganization and the packing, exported to m scanning card arrays respectively through the interface that the m road is parallel; Every road signal of video distribution device output is transferred to n the scanning card that constitutes scanning card arrays; The data in pixel zone are set in each scanning card intercepting, and the data of intercepting are decoded, exported LED display to after access, data processing and the distribution separately; N=E/L, m=F/V, wherein E is that the pixels across of LED display is counted, F is vertical pixel number of LED display, L * V pixel of monolithic scanning card control.
2. LED display dual-machine hot backup system according to claim 1; It is characterized in that the data of described two video distribution device output import the two-way input channel A1 and the A2 of first scanning card of each scanning card arrays respectively, two-way input channel A1 and A2 that the two paths of data output B1 of first scanning card and B2 connect second scanning card respectively; The rest may be inferred, two-way input channel A1 and A2 that the two paths of data output B1 of n-1 scanning card and B2 connect last scanning card respectively.
3. LED display dual-machine hot backup system according to claim 1 is characterized in that the two paths of data of first scanning card input channel A1 and the A2 of each scanning card arrays is taken from the output of first video distribution device and the data output B2 of second scanning card respectively; The two paths of data of second scanning card input channel A1 and A2 is taken from the data output B1 of first scanning card and the data output B2 of the 3rd scanning card respectively; The two paths of data of the 3rd scanning card input channel A1 and A2 is taken from the data output B1 of second scanning card and the data output B2 of the 4th scanning card respectively; The rest may be inferred; The two paths of data of n-1 scanning card input channel A1 and A2 is taken from the data output B1 of n-2 scanning card and the data output B2 of last scanning card respectively, and the two paths of data of last scanning card input channel A1 and A2 is taken from the output that the data of n-1 scanning card are exported B1 and second video distribution device respectively.
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105788521B (en) * | 2014-12-25 | 2018-07-24 | 西安诺瓦电子科技有限公司 | LED display screen system and condition detection method |
| US9812059B2 (en) * | 2015-07-13 | 2017-11-07 | Sct Technology, Ltd. | Display device, method for transmitting data packet, and LED system |
| CN107315626B (en) * | 2016-04-27 | 2020-10-20 | 比亚迪股份有限公司 | Vehicle-mounted multimedia and control method thereof |
| CN106448545B (en) * | 2016-10-14 | 2023-09-05 | 深圳雷美瑞智能控制有限公司 | LED display screen control system and receiving card and monitoring board thereof |
| CN106569764A (en) * | 2016-10-24 | 2017-04-19 | 浙江大华技术股份有限公司 | Display system, method for decoding device hot backup in display system and backup decoding device |
| CN107274827B (en) * | 2017-05-04 | 2020-05-19 | 西安诺瓦星云科技股份有限公司 | Display screen controller backup method and device |
| CN108897513B (en) * | 2018-07-11 | 2021-06-08 | 深圳市东微智能科技股份有限公司 | Distributed display equipment and node backup scheme generation method and device thereof |
| CN110718181B (en) * | 2018-07-12 | 2021-09-21 | 杭州海康威视数字技术股份有限公司 | Signal source backup method, device and system and LED controller |
| CN111754926B (en) * | 2020-07-29 | 2022-05-24 | 深圳市奥拓电子股份有限公司 | LED video control system, fault positioning method thereof and LED display system |
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Effective date of registration: 20200921 Address after: No.488 Chaoyue street, high tech Development Zone, Changchun City, Jilin Province Patentee after: CHANGCHUN CEDAR ELECTRONICS TECHNOLOGY Co.,Ltd. Address before: 130033 southeast Lake Road, Jilin, Changchun, No. 3888 Patentee before: Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences |