CN105744298A - Industrial switch electrical port transmission method based on video code stream technology - Google Patents
Industrial switch electrical port transmission method based on video code stream technology Download PDFInfo
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- CN105744298A CN105744298A CN201610063115.4A CN201610063115A CN105744298A CN 105744298 A CN105744298 A CN 105744298A CN 201610063115 A CN201610063115 A CN 201610063115A CN 105744298 A CN105744298 A CN 105744298A
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- video
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
- H04N21/4385—Multiplex stream processing, e.g. multiplex stream decrypting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/23614—Multiplexing of additional data and video streams
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2389—Multiplex stream processing, e.g. multiplex stream encrypting
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4348—Demultiplexing of additional data and video streams
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/64—Addressing
- H04N21/6405—Multicasting
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention relates to an industrial switch electrical port transmission method based on a video code stream technology. The method comprises the following steps: carrying out video coding on a video image by an encoder to obtain a video code stream; receiving video code stream information by a switch, triggering a forced sending signal if recognizing a video separator in the received video code stream, and encapsulating the video code stream which is cached currently into a data packet; carrying out multicast on the data packet, grouping multicast data to corresponding multicast queues according to group identifications of the multicast data, and carrying out traffic shaping on the multicast data in the multicast queues according to a set rate; and sending the multicast data which are carried out with the traffic shaping to a decoder by the switch, and decoding the multicast data via the decoder. According to the method disclosed by the invention, an Ethernet code stream analysis technology is adopted for data transmission of the switch, and when a video is accessed, a code stream structure can effectively improve the fluency of the image, and alleviates the pressure for subsequent transmission and switching.
Description
Technical field
The present invention relates to a kind of industrial switch, be specifically related to a kind of industrial switch electricity port transmission method based on video code flow technology.
Background technology
Along with development and the penetration and promotion of Internet technology, Ethernet technology have also been obtained rapid development,
The raising of Ethernet transfer rate and the development of Ethernet switching technology, bring hope to the uncertain problems solving Ethernet communication, and make Ethernet overall application be possibly realized in industrial control field.Industrial control network is different from the maximum of general data network and is characterized in that it must is fulfilled for the control action requirement to real-time, and namely enough fast and definitivenesss meeting signal are wanted in signal transmission.Control in real time to often require that the data accurate timing to some variable refreshes.Owing to Ethernet adopts CSMA/CD collision detection mode, when network load is bigger, the uncertainty of network transmission can not meet the requirement of real time of Industry Control, therefore traditional ethernet technology is difficult to meet the requirement of real-time controlling system requirements accurate timing communication, is always treated as the network of uncertainty.But, the development of Fast Ethernet and switching Ethernet technology, bring new opportunity to the uncertain problems solving Ethernet, make this application be possibly realized.First, the traffic rate of Ethernet increases to 1000M, 10G of today from 10M, 100M, when data throughout is identical, the raising of traffic rate means alleviating and the reduction of network transmission delay of network load, namely network collision probability is greatly reduced, and makes the transfer rate causing switch decline.
Summary of the invention
It is an object of the invention to provide a kind of industrial switch electricity port transmission method based on video code flow technology, to alleviate the pressure of subsequent transmission and exchange, improve the transmission speed of switch.
For achieving the above object, present invention employs techniques below scheme:
A kind of industrial switch electricity port transmission method based on video code flow technology, comprises the following steps:
(1) encoder video image is carried out Video coding, obtains video code flow；Described video code flow includes video frame image and video separator, and described video separator sends signal for triggering the pressure to described video code flow, and points out the video image frame end of decoder present frame；
(2) switch receives Video coding stream information, if recognizing described video separator in the described video code flow received, then triggers described pressure and sends signal, the described video code flow of current cache is packaged into a packet；
(3) packet is carried out multicast, identify according to the group of multicast packet and described multicast packet group is entered corresponding multicast queue, the multicast packet in described multicast queue is carried out traffic shaping according to setting speed；
(4) switch sends the multicast packet having carried out described traffic shaping to decoder, by decoder, multicast packet is decoded.
Described step (1) is further comprising the steps of:
(A) video code flow obtained is resolved, obtain the parameter information of each viewpoint code stream, separating each viewpoint data, described code stream analyzing refers to the TS transmission stream of looking of multiplexing is resolved more, based on the code stream of TS bag spreading parameter with the corresponding relation differentiation different points of view of viewpoint numbering；
(B) open up two-stage for each viewpoint code stream and send relief area, be called the first transmission relief area and second and send relief area, be the second transmission setting buffers threshold value, each viewpoint data separated are cached to respective first respectively and send in relief area；
(C) with respective frame per second, the first transmission relief area of each viewpoint code stream determines that current transmission controls information according to the size being cached to data therein, send transmission packet in relief area according to controlling transmission information to second, smooth because each viewpoint code stream separates the code check shake introduced；
(D) the second of each viewpoint code stream sends relief area and sends the speed of packet according to self space utilization rate self-adaptative adjustment to outside, is sent out packet, the code check shake that smooth each viewpoint code stream self is intrinsic.
As shown from the above technical solution, the present invention adopts Ethernet code stream analysis technology that switch is carried out transmission of video, and time its video accesses, code flow structure can be effectively improved the fluency of image, alleviates the pressure of subsequent transmission and exchange.Simultaneously in the method in bit stream process, adopting the code check that software realizes in the network transmission of multi-view video streams to smooth, cause the mechanism of code check shake in transmitting according to multi-view video streams, being designed as each viewpoint code stream, independently to carry out two-stage code rate smooth.It is inherently eliminated and has looked the square phenomenon of single view code stream code check in transmission more, and the single view code stream eliminating code check square phenomenon is carried out again code check smooth, effectively improve code stream shake and burst mode transmission situation, reduce the instantaneous network bandwidth demand of single view code stream, alleviate network and receive terminal anti-jitter burden, it is ensured that the network transmission quality of multi-video.
Accompanying drawing explanation
Fig. 1 is the method flow diagram of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described:
The industrial switch electricity port transmission method based on video code flow technology as shown in Figure 1, comprises the following steps:
S1: video image is also carried out Video coding by encoder, obtains video code flow；The video code flow obtained is resolved, obtain the parameter information of each viewpoint code stream, separating each viewpoint data, described code stream analyzing refers to the TS transmission stream of looking of multiplexing is resolved more, based on the code stream of TS bag spreading parameter with the corresponding relation differentiation different points of view of viewpoint numbering；Open up two-stage for each viewpoint code stream and send relief area, be called the first transmission relief area and second and send relief area, be the second transmission setting buffers threshold value, each viewpoint data separated are cached to respective first respectively and send in relief area；The first of each viewpoint code stream sends relief area and determines that current transmission controls information according to the size being cached to data therein with respective frame per second, send transmission packet in relief area according to controlling transmission information to second, smooth because each viewpoint code stream separates the code check shake introduced；The second of each viewpoint code stream sends relief area and sends the speed of packet according to self space utilization rate self-adaptative adjustment to outside, is sent out packet, the code check shake that smooth each viewpoint code stream self is intrinsic.Described video code flow includes video frame image and video separator, and described video separator sends signal for triggering the pressure to described video code flow, and points out the video image frame end of decoder present frame；
S2: switch receives the packet information that Video coding stream sends, if recognizing described video separator in the described video code flow received, then triggers described pressure and sends signal, the described video code flow of current cache is packaged into a packet；
S3: packet is carried out multicast, identifies according to the group of multicast packet and described multicast packet group is entered corresponding multicast queue, and according to setting speed, the multicast packet in described multicast queue is carried out traffic shaping；
S4: switch sends the multicast packet having carried out described traffic shaping to decoder, by decoder, multicast packet is decoded.
The present invention adopts Ethernet code stream analysis technology that switch is carried out transmission of video, and time its video accesses, code flow structure can be effectively improved the fluency of image, alleviates the pressure of subsequent transmission and exchange.Simultaneously in the method in bit stream process, adopting the code check that software realizes in the network transmission of multi-view video streams to smooth, cause the mechanism of code check shake in transmitting according to multi-view video streams, being designed as each viewpoint code stream, independently to carry out two-stage code rate smooth.It is inherently eliminated and has looked the square phenomenon of single view code stream code check in transmission more, and the single view code stream eliminating code check square phenomenon is carried out again code check smooth, effectively improve code stream shake and burst mode transmission situation, reduce the instantaneous network bandwidth demand of single view code stream, alleviate network and receive terminal anti-jitter burden, it is ensured that the network transmission quality of multi-video.
Embodiment described above is only that the preferred embodiment of the present invention is described; not the scope of the present invention is defined; under the premise designing spirit without departing from the present invention; various deformation that technical scheme is made by those of ordinary skill in the art and improvement, all should fall in the protection domain that claims of the present invention is determined.
Claims (2)
1. the industrial switch electricity port transmission method based on video code flow technology, it is characterised in that comprise the following steps:
(1) encoder video image is carried out Video coding, obtains video code flow；Described video code flow includes video frame image and video separator, and described video separator sends signal for triggering the pressure to described video code flow, and points out the video image frame end of decoder present frame；
(2) switch receives Video coding stream information, if recognizing described video separator in the described video code flow received, then triggers described pressure and sends signal, the described video code flow of current cache is packaged into a packet；
(3) packet is carried out multicast, identify according to the group of multicast packet and described multicast packet group is entered corresponding multicast queue, the multicast packet in described multicast queue is carried out traffic shaping according to setting speed；
(4) switch sends the multicast packet having carried out described traffic shaping to decoder, by decoder, multicast packet is decoded.
2. the industrial switch electricity port transmission method based on video code flow technology according to claim 1, it is characterised in that described step (1) is further comprising the steps of:
(A) video code flow obtained is resolved, obtain the parameter information of each viewpoint code stream, separating each viewpoint data, described code stream analyzing refers to the TS transmission stream of looking of multiplexing is resolved more, based on the code stream of TS bag spreading parameter with the corresponding relation differentiation different points of view of viewpoint numbering；
(B) open up two-stage for each viewpoint code stream and send relief area, be called the first transmission relief area and second and send relief area, be the second transmission setting buffers threshold value, each viewpoint data separated are cached to respective first respectively and send in relief area；
(C) with respective frame per second, the first transmission relief area of each viewpoint code stream determines that current transmission controls information according to the size being cached to data therein, send transmission packet in relief area according to controlling transmission information to second, smooth because each viewpoint code stream separates the code check shake introduced；
(D) the second of each viewpoint code stream sends relief area and sends the speed of packet according to self space utilization rate self-adaptative adjustment to outside, is sent out packet, the code check shake that smooth each viewpoint code stream self is intrinsic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610063115.4A CN105744298A (en) | 2016-01-30 | 2016-01-30 | Industrial switch electrical port transmission method based on video code stream technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610063115.4A CN105744298A (en) | 2016-01-30 | 2016-01-30 | Industrial switch electrical port transmission method based on video code stream technology |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1402852A (en) * | 1999-10-22 | 2003-03-12 | 动感天空公司 | Object oriented video system |
| CN102355577A (en) * | 2011-09-23 | 2012-02-15 | 上海交通大学 | Method for smoothing network transmission bit-rate of multi-view video streams |
| CN102857440A (en) * | 2012-08-17 | 2013-01-02 | 杭州华三通信技术有限公司 | Data processing method and switchboard |
| US20130036092A1 (en) * | 2011-08-03 | 2013-02-07 | Amadeus S.A.S. | Method and System to Maintain Strong Consistency of Distributed Replicated Contents in a Client/Server System |
| CN103701694A (en) * | 2012-09-27 | 2014-04-02 | 株式会社日立制作所 | Gateway device and data processing method |
| CN104506868A (en) * | 2014-12-31 | 2015-04-08 | 深圳市大疆创新科技有限公司 | Video code stream transmission method, device and system |
-
2016
- 2016-01-30 CN CN201610063115.4A patent/CN105744298A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1402852A (en) * | 1999-10-22 | 2003-03-12 | 动感天空公司 | Object oriented video system |
| US20130036092A1 (en) * | 2011-08-03 | 2013-02-07 | Amadeus S.A.S. | Method and System to Maintain Strong Consistency of Distributed Replicated Contents in a Client/Server System |
| CN102355577A (en) * | 2011-09-23 | 2012-02-15 | 上海交通大学 | Method for smoothing network transmission bit-rate of multi-view video streams |
| CN102857440A (en) * | 2012-08-17 | 2013-01-02 | 杭州华三通信技术有限公司 | Data processing method and switchboard |
| CN103701694A (en) * | 2012-09-27 | 2014-04-02 | 株式会社日立制作所 | Gateway device and data processing method |
| CN104506868A (en) * | 2014-12-31 | 2015-04-08 | 深圳市大疆创新科技有限公司 | Video code stream transmission method, device and system |
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Application publication date: 20160706 |
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