CN102611869A - Output-oriented network transmission technique of multi-screen splicing system - Google Patents
Output-oriented network transmission technique of multi-screen splicing system Download PDFInfo
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Abstract
The invention relates to an output-oriented network transmission technique of a multi-screen splicing system. The core of the technique is output-oriented smart segmentation and accurate transmission; in other words, segmentation processing is performed on signals in a smart way according to the requirements of output display, and then each part of data is accurately transmitted to a corresponding display unit. The technique comprises the following main steps that: step 1, an input acquisition end processor (2) acquires a signal from a signal source (1), and performs compression processing on the corresponding signal according to a display policy sent by a control host (5); step 2, the acquisition end processor (2) segments the signal according to the display policy, compresses and packs the segmented image data and then transmits the same to an output display end through a network; step 3, a display end processor (3) unpacks and decodes the data and performs amplification processing on the signal according to the display policy; and step 4, the display end processor outputs and displays the image on a corresponding spliced display screen (4). In the whole process, the data is segmented in advance at the input end and each part of data is accurately transmitted to the corresponding display unit; and the compression of the signal is completed at the input end while amplification is realized by the output end; therefore, the data in the whole network system is transmitted at the lowest flow rate and the waste of bandwidth is avoided.
Description
Technical field
The multi-screen splicing that the present invention relates to image shows the field, relates in particular to a kind of multi-screen splicing grid transmission technology towards output.
Background technology
Along with the development of video-splicing Display Technique, the large-screen splicing video wall has obtained increasing favor with its high definition, color effect true to nature, big picture at present.The high-resolution of splicing large screen can be passed on more information, can satisfy many-sided demands such as real-time monitoring, command scheduling, report displaying, advertising, has obtained large-area universal use.
Existing splicing Display Technique; Normally realize in the following manner: the data acquisition end of stitching image processor is sampled, is encoded the image information of signal source; Through system bus or network with transfer of data to processor memory; The control signal of sending according to main control system is again carried out convergent-divergent, processing such as is cut apart signal, afterwards will images displayed transfer of data to the process chip of exporting display end, final through corresponding display interface output on each splicing display unit.Traditional embedded image processor is as centralized central controller, because its defective on stability, flexibility and extensibility is replaced based on the distributed image processor of high bandwidth Ethernet by a new generation at present gradually.In the distributed image processing system, the collection of view data, processing and output are accomplished by the distributed node in the network, and the transmission of data from collection terminal to the output display end then realizes through network fully.
When a picture need be striden the screen demonstration on mosaic display screen; Distributed image processing system can be taked following mode usually: after the collection terminal processor acquired signal; With many parts of this signal replications; Transfer to the demonstration processing node of picture output respectively, after output display end processor calculating is handled, again image is outputed on the corresponding display unit; And also therefore multiplication of data traffic in the system, the transmission bandwidth of data just becomes the bottleneck of systematic function.Distributed image processor has had very big lifting at aspect of performance, but because the limited bandwidth of Network Transmission, image stride screen when showing the data quantity transmitted of wanting excessive, can't guarantee the high-resolution and the high-transmission frame per second of image simultaneously.
Present solution has two kinds: the one, reduce volume of transmitted data through reducing image transmission frame per second, and guarantee the demonstration of high definition still image, this method can't be used for transmitting dynamic video data; Another kind then is with h.264 waiting video compression algorithm that signal is carried out encoding compression, reducing shared bandwidth through reducing image quality, thereby guarantee the smoothness of video image.Two kinds of methods all are that the cost of performance satisfies certain particular demands to sacrifice on the other hand, fundamentally do not improve behind many parts of the signal replications bandwidth waste that transmission respectively causes again, and can't realize the harmless transmitting and displaying of high definition dynamic video data.
Summary of the invention
Technical problem to be solved by this invention provides a kind of network transmission technology to the splice displaying system view data; The image data transmission mode is optimized; The bandwidth resources of transmission network are fully utilized; Thereby guarantee the high-resolution and the high-transmission frame per second of image simultaneously, overcome the problem that distributed splice displaying system can't satisfy the HD video transfer of data.
For overcoming the above problems, the present invention proposes a kind of multi-screen splicing grid transmission technology towards output.The core of the technical scheme that adopts is to cut apart and accurately transmission towards the intelligence of output, and the demand that promptly shows according to output is intelligently carried out dividing processing to signal, again the each several part data is accurately transferred to corresponding display unit.In whole transmission course, take having only finally of the network bandwidth and will export data presented, this just makes the network bandwidth be fully utilized, thereby avoids the bandwidth waste under the traditional approach.Concrete performing step is:
The invention has the beneficial effects as follows; Guaranteeing under the harmless prerequisite of picture quality; Greatly saved the network bandwidth; Thereby make image have the characteristics of high definition and high refresh rate simultaneously, what simultaneously the display of high resolution base map with the dynamic video signal, had particularly been realized the 1080P high-definition video signal strides the screen demonstration in real time; The real-time of picture and synchronism have also obtained great lifting.
Description of drawings
Fig. 1 is the system construction drawing that a multi-screen splicing shows embodiment.
Fig. 2 is the FB(flow block) that multi-screen splicing display system internal signal is handled.
Fig. 3 is the schematic diagram of middle data processing embodiment illustrated in fig. 1 and transmission.
1. input signal sources among the figure are 2. gathered input and are handled node, 3. output display end processing node, 4. mosaic display screen, 5. main control system, 6. network data switching equipment.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further, institute gives an actual example and only is used to explain the present invention, is not to be used to limit scope of the present invention.
Fig. 1 has provided one by 2 input signal sources (A, B), 42 * 2 splice displaying system embodiment that display screen is formed.Wherein, image processing module is from input signal source (1) acquisition of image data, and according to the splicing control strategy that main control system (5) sends data handled, and finally will images displayed transfer on the spliced display wall screen (4).
Fig. 2 specifies the flow process of signal processing and transmission.The processing of data is mainly accomplished by the processing node (2,3) of collection terminal and display end, and this part has just constituted " image processing module " among Fig. 1.Input collection terminal processor is from signal source (1) acquired signal, and the display strategy of sending according to main control system (5) is done corresponding signal and to be dwindled and cutting operation, then data is compressed packing, through Network Transmission to the output display end; Display end processor (3) is unpacked data, decode, and according to display strategy signal is done processing and amplifying, and final output is presented on the mosaic display screen (4).In the whole process, data need not to duplicate many parts, cut in advance at input, and accurately are sent to corresponding display unit to the each several part data; And dwindling at input of signal accomplished, and amplifies then and is responsible for by output, guaranteed that data transmit with minimum discharge in the whole network system, avoided waste of bandwidth.
Fig. 3 specifies data processing and the transmission of the given embodiment of Fig. 1.The image of two input signal source A, B need be according to user configured strategy, and the overlapping screen of striding is presented on 2 * 2 the mosaic display screen; Whole process may further comprise the steps:
The each several part data were carried out lossless compress after step 6,21,22 pairs of Acquisition Processors were cut apart, and were packaged as the network data frame;
Step 7, data are transmitted through network, are transmitted to corresponding output through the network switching equipment 6 (switch) and handle device; Be that A1, B2, B3 are transferred to and show processing node 31, A2, A3, A4 then pass to node 32,33,34 respectively;
Step 8 shows the decoding of unpacking of 31～34 pairs of data of processing node, and in two dimension directions signal is amplified computing (not having in the present embodiment, the requirement of signal amplification) according to display strategy;
Step 9, the demonstration processing node will finally want images displayed to export corresponding display unit to; Image intactly is presented on the mosaic display screen 4.
The embodiment of the invention is through the stitching image network transmission technology in the face of output; Avoided the waste of the network bandwidth; Signal A, B are presented on the mosaic display screen with high-resolution and hi-vision refresh rate simultaneously, have guaranteed high-quality, high synchronous, high real-time that picture shows.
The above is merely preferred embodiments of the present invention, in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being made, is not equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. the multi-screen splicing grid transmission technology towards output is characterized in that the image data transmission thought that " measures to going into " in the distributed splice displaying system, and intelligence is cut apart the technological means of accurate transmission; Comprise the steps:
Step 1, input collection terminal processor be from the signal source acquired signal, and the display strategy of sending according to main control system is done corresponding signal and to be dwindled processing;
Step 2, the collection terminal processor is cut apart signal according to the position of striding screen in the display strategy, and the view data after will cutting apart is compressed packing respectively;
Step 3, image data packets transfers to corresponding output display end through the express network switching equipment;
Step 4, the display end processor is unpacked data, decode, and according to display strategy signal is done processing and amplifying;
Step 5, the display end processor is exported image on the mosaic display screen relevant position according to display strategy.
2. multi-screen splicing grid transmission technology according to claim 1; It is characterized in that; Take having only finally of the network bandwidth in the data transmission procedure and will export data presented, the network bandwidth is fully utilized, thereby avoids the bandwidth waste under the traditional approach.
3. multi-screen splicing grid transmission technology according to claim 1 is characterized in that the computing of dwindling of signal is accomplished at input, and the amplification of signal is then accomplished by output, has guaranteed that data transmit with minimum discharge in the whole network system.
4. multi-screen splicing grid transmission technology according to claim 1; It is characterized in that; Each network node in the distributed structure/architecture system has intelligentized disposal ability, and the processing node of input and output side all can be handled operation to data according to control strategy.
5. multi-screen splicing grid transmission technology according to claim 1 is characterized in that, can guarantee the high-resolution and the high refresh rate of image simultaneously, can realize the harmless transmitting and displaying of high definition dynamic video data.
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| CN103021377A (en) * | 2012-12-21 | 2013-04-03 | 北京牡丹视源电子有限责任公司 | Ultrahigh-definition multi-screen image processing system |
| CN103297707A (en) * | 2013-05-13 | 2013-09-11 | 数标时代（北京）科技有限公司 | Ultrahigh-definition video play system |
| CN103677701A (en) * | 2012-09-17 | 2014-03-26 | 杭州海康威视数字技术股份有限公司 | Large screen synchronous display method and system |
| CN104052959A (en) * | 2013-03-12 | 2014-09-17 | 无锡思朗电子科技有限公司 | A distributed splicing control display system based on network video nodes |
| CN104113705A (en) * | 2013-04-16 | 2014-10-22 | 无锡思朗电子科技有限公司 | Distributed matrix switching system |
| CN104270578A (en) * | 2014-09-19 | 2015-01-07 | 深圳市晶日盛科技有限公司 | Method and system for processing multi-channel video images based on network transmitting |
| WO2015070694A1 (en) * | 2013-11-18 | 2015-05-21 | 杭州海康威视数字技术股份有限公司 | Screen splicing system and video data stream processing method |
| CN104811659A (en) * | 2014-12-26 | 2015-07-29 | 山东巨洋神州信息技术有限公司 | Image Stacking Intelligent Hollowing Method Based on Optical Fiber Distributed Display System |
| CN105357450A (en) * | 2015-10-21 | 2016-02-24 | 武汉钢铁(集团)公司 | Video stitching control system |
| US9430812B2 (en) | 2012-09-12 | 2016-08-30 | Realtek Semiconductor Corporation | Image processing method, image output processing method, and image reception processing method |
| CN103595926B (en) * | 2012-08-15 | 2017-06-13 | 无锡思朗电子科技有限公司 | A kind of distributed image Fusion Edges processing system |
| CN108255454A (en) * | 2018-02-01 | 2018-07-06 | 上海大视信息科技有限公司 | A kind of virtual interactive interface method of splicing device and splicing device |
| CN109308862A (en) * | 2017-07-27 | 2019-02-05 | 北京淳中科技股份有限公司 | Signal control method, control device, processing unit and signal control equipment |
| CN109561280A (en) * | 2018-10-29 | 2019-04-02 | 黑龙江科技大学 | A kind of spliced panoramic data dual mode transmission method and device of finite bandwidth |
| CN110364127A (en) * | 2018-04-10 | 2019-10-22 | 普天信息技术有限公司 | Adaptive display method and device for intelligent large screen system |
| CN112583821A (en) * | 2020-12-09 | 2021-03-30 | 威创集团股份有限公司 | Display method, display system, electronic device, and computer-readable storage medium |
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| CN104052959A (en) * | 2013-03-12 | 2014-09-17 | 无锡思朗电子科技有限公司 | A distributed splicing control display system based on network video nodes |
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| CN103297707B (en) * | 2013-05-13 | 2016-06-08 | 数标时代（北京）科技有限公司 | A kind of Ultrahigh-definitionvideo video play system |
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| WO2015070694A1 (en) * | 2013-11-18 | 2015-05-21 | 杭州海康威视数字技术股份有限公司 | Screen splicing system and video data stream processing method |
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Application publication date: 20120725 |