CN111741237A - Ultra-high definition digital signal relay system and ultra-high definition digital signal relay vehicle - Google Patents
Ultra-high definition digital signal relay system and ultra-high definition digital signal relay vehicle Download PDFInfo
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- CN111741237A CN111741237A CN202010640735.6A CN202010640735A CN111741237A CN 111741237 A CN111741237 A CN 111741237A CN 202010640735 A CN202010640735 A CN 202010640735A CN 111741237 A CN111741237 A CN 111741237A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/28—Mobile studios
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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
- H04N21/21—Server components or server architectures
- H04N21/218—Source of audio or video content, e.g. local disk arrays
- H04N21/2187—Live feed
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
Abstract
The invention relates to the technical field of broadcast television, in particular to an ultra-high definition digital signal relay system and an ultra-high definition digital signal relay vehicle, which comprise a network information source, a slow motion server, a switch, a switching platform, an SDN controller, a multifunctional format converter, a router and a connecting wire, and further comprise: the first input link is formed by connecting a network information source with a switch through at least two groups of connecting lines; the second input link is formed by connecting a slow motion server and an internetwork connector with a switch through at least two groups of connecting lines; the switches are connected through a switching platform, the switching platform controls the switches, and the SDN controller controls the switches to work; and the output link comprises a switch, a signal adapter, a router and an internetwork connector which are connected in sequence. The invention has the beneficial effects that: the transmission of the ultra-high definition digital signal is safely and stably realized, and the transmission distance of the ultra-high definition digital signal is increased.
Description
Technical Field
The invention relates to the technical field of broadcast television, in particular to an ultra-high definition digital signal relay system and an ultra-high definition digital signal relay vehicle.
Background
The TV relay vehicle is a small-sized vehicle-mounted TV station with the characteristics of flexible maneuvering and large range of motion. It can be far from TV center to carry out on-site video recording and on-site editing work, and can immediately transmit the recorded program to TV center to carry out on-site rebroadcasting. At present, a relay station vehicle system basically adopts a coaxial cable as a main cable for building the relay station vehicle system and is used for transmitting high-definition video signals in the relay station vehicle. The transmission bandwidth of the high-definition video signals is 1.485Gbps-3Gbps, the maximum bandwidth supported by the traditional coaxial cable is 3Gbps, and the transmission of the high-definition signals can be met.
With the rapid development of the domestic broadcast television industry, the production and retransmission of 4K programs have been gradually advanced in China, because the resolution of 4K signals (the 4K resolution is ultra-high definition resolution) is 4 times higher than that of high-definition video signals, and the color gamut bt.2020 standard higher than that of high-definition video signals is adopted, the transmission of single-path 4K signals needs 12Gbps bandwidth, so that the traditional coaxial cable cannot meet the transmission requirement of high bandwidth of 4K signals due to the limitation of bandwidth.
In the initial stage of 4K development, 4 coaxial cables are adopted as a group (12 Gbps in total), and a 4K signal is transmitted all the way, so that the number of the cables is 4 times that of the cables, the difficulty in building the system is directly increased, and the system is not beneficial to maintenance and overhaul. In addition, coaxial cable manufacturers have proposed 12Gbps coaxial cables in order to meet the high bandwidth requirement of 4K signal transmission, but the cables have high requirements for processing and integration processes, and cable bending inevitable in system integration has a large influence on signals and a short transmission distance, so that an IP (Internet Protocol, Protocol for interconnection between networks) digital television system is required to meet the requirements for making and rebroadcasting of 4K programs.
Disclosure of Invention
The invention aims to provide an ultra-high definition digital signal relay system and an ultra-high definition digital signal relay vehicle, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
an ultra-high-definition digital signal relay system comprises a Network source, a slow-motion server, a switch, a switching station, an SDN (Software Defined Network) controller, a multifunctional format converter, a router and connecting lines, and further comprises: the first input link is formed by connecting a network information source with a switch through at least two groups of connecting lines; the second input link is formed by connecting a slow motion server and an internetwork connector with a switch through at least two groups of connecting lines; the switches are connected through a switching platform, the switching platform controls the switches, and the SDN controller controls the switches to work; and the output link comprises a switch, a signal adapter, a router and an internetwork connector which are connected in sequence.
As a further scheme of the invention: the output link also comprises a switch, a signal adapter, a double-channel cross converter, an ultra-high definition converter, a router and an internetwork connector which are connected in sequence.
As a still further scheme of the invention: the output link also comprises a high-definition output link, and the high-definition output link comprises a switching platform, a multifunctional format converter and a router which are sequentially connected.
As a still further scheme of the invention: and the network source or the slow motion server is respectively connected with the router.
As a still further scheme of the invention: the router is also connected with the multifunctional format converter through a keyer.
As a still further scheme of the invention: the network information source comprises a network camera and a network live broadcast signal.
As a still further scheme of the invention: the SDN controller comprises a redundancy backup module which is set as a switch, a two-channel cross converter, an ultra-high definition converter, an internetwork connector and a switch which are connected in sequence.
As a still further scheme of the invention: the system also comprises a network clock synchronization module used for synchronizing the time of the switch.
The invention provides another scheme that: an ultra-high definition digital signal relay vehicle comprises the ultra-high definition digital signal relay system.
Compared with the prior art, the invention has the beneficial effects that: the transmission of the ultra-high definition digital signal is safely and stably realized, and the transmission distance of the ultra-high definition digital signal is increased.
Drawings
Fig. 1 is a system block diagram of an ultra high definition digital signal relay system.
Fig. 2 is a schematic wiring diagram of a network interconnection system in an ultra high definition digital signal relay system.
Fig. 3 is a schematic wiring diagram of a network interconnection system in the ultra high definition digital signal relay system.
Fig. 4 is a simplified wiring diagram of fig. 3.
Fig. 5 is a flow chart of the network clock synchronization module.
In the drawings: 1. a main switch, 2, a standby switch, 3, a Network source, 4, a slow motion server, 5, an inter-Network connector, 6, an IP-SDI (Network-to-digital component serial interface) signal adapter, 7, a router, 8, a switching station, 9, a broadcasting terminal, 10, a multifunctional format converter, 11, an SDN (Software Defined Network) controller, 12, a two-channel cross-converter, 13, an ultra-high definition converter, 14, and a keyer;
a represents a main ultra-high definition network cable, b represents a standby ultra-high definition network cable, c represents an ultra-high definition output line, and d represents a high definition output line.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
Referring to fig. 1, in an embodiment of the present invention, an ultra high definition digital signal relay system includes a network source 3, a slow motion server 4, a switch 8, an SDN controller 11, a multifunctional format converter 10, a router 7, and a connection line, and further includes: the first input link is formed by connecting a network information source with a switch through at least two groups of connecting lines; the second input link is formed by connecting the slow motion server 4 and the internetwork connector 5 with the switch through at least two groups of connecting lines; a plurality of switches are connected through a switching platform, the switching platform 8 controls the switching of the switches, and the SDN controller 11 controls the switches to work; and an output link including a switch, a signal adapter, a router 7, and an internetwork connector 5, which are connected in sequence.
Specifically, the number of the switches is two, and the two switches are respectively a main switch 1 and a standby switch 2, the connection line includes a main ultra-high-definition network cable a, a standby ultra-high-definition network cable b, an ultra-high-definition output line c and a high-definition output line d, the network information source 3 and the main switch 1, the slow-motion server 4 and the main switch 1 are connected through the main ultra-high-definition network cable a and the standby ultra-high-definition network cable b, and the main switch 1, the switching station 8 and the standby switch 2 are connected through the main ultra-high-definition network cable a and the standby ultra-high-definition network cable b; the safety and reliability of the rebroadcasting are ensured. The access of the main exchanger and the standby exchanger is switched through the switching platform, so that when a fault occurs, a signal source can be switched in time, and a rebroadcasting accident is avoided; the network information source comprises a network camera and a network live broadcast signal, a video recorded by the network camera is provided to the main switch 1 as the network information source, or a picture is made by a computer and other intelligent equipment and provided to the main switch 1 as the network live broadcast signal, and the switching station reserves the data of the main switch to the standby switch for urgent use; the main switch 1 transmits the signal source to the router through the signal adapter, the router transmits the signal source to the gateway, and the gateway performs format conversion and outputs the signal source to the broadcasting terminal 9; the transmission and the rebroadcasting of the ultra-high definition digital signal are safely and stably realized, and the transmission distance of the ultra-high definition digital signal is increased. The signal adapter is an IP-SDI (network to digital component serial interface) signal adapter 6.
It should be noted that, the main switch and the standby switch both use a core IP switch (core network switch) of CE8850 series; it provides 64 100GE ports, each of which can be adapted to 40GE ports, or split into 4 25GE ports. The maximum support of the whole machine is split into 128 ports of 25G. As shown in fig. 2-4, the 100Gbps port support of the core IP switch is split into 4 ports for 25Gbps, port 1, port 2, port 3, and port 4. In the ultra-high-definition digital signal relay system, physical connection is completed by using an optical fiber distribution frame for transferring MTP/MPO to LC. The LC-LC optical fiber adopts the following polarities: AtoB. As shown in fig. 4, the Tx core corresponds to the Rx core at the other end (i.e., the transmit core corresponds to the receive core at the other end).
Further, the output link further comprises a switch, a signal adapter, a dual-channel cross converter 12, an ultra-high definition converter 13, a router 7 and an inter-network connector 5 which are connected in sequence. The signal source of the main switch 1 or the standby switch 2 is transmitted to the IP-SDI signal adapter 6 through a main ultra high definition network line a or a standby ultra high definition network line b, the IP-SDI signal adapter 6 is transmitted to the dual-channel cross converter 12, the ultra high definition converter 13 and the router 7 through an ultra high definition output line c, and the router 7 outputs an ultra high definition signal to the broadcasting terminal 9 through the ultra high definition output line c. The broadcasting terminal 9 comprises a computer, a television, a display screen and the like.
Preferably, the output link further comprises a high-definition output link, and the high-definition output link comprises a switching station 8, a multifunctional format converter and a router 7 which are connected in sequence.
The network information sources are connected to the router through a high-definition output line d in one path, or are connected to the router 7 through the switching table 8 and the multifunctional format converter; and is output to the broadcasting terminal 9 as a high-definition signal source. The broadcasting terminal 9 comprises a television, a computer, a mobile phone, a projector, an outdoor giant display screen and the like.
In an embodiment of the present invention, the slow motion server is connected to a router through a high definition output line d in one path, or connected to the router 7 through the switching station 8 and the multifunctional format converter 10, and outputs the signal to the broadcasting terminal as a high definition signal source. The multifunctional format converter 10 is composed of a high definition transmission interface, an embedder, and a high definition converter.
The network signal source or the slow motion server can be used as an ultra-high definition signal source or a high definition signal source, and when the network signal source or the slow motion server is used as the high definition signal source, the network signal source or the slow motion server is connected with the router 7 and is transmitted to the broadcasting terminal 9 through the high definition output line d.
In summary, the high-definition output link also has several output lines, so that the retransmission safety is ensured.
Further, the router 7 is also connected to the high definition transmission interface of the multifunctional format converter 10 through a keyer 14.
In one embodiment of the invention, the SDN controller includes a redundancy backup module configured as a switch, a dual-channel cross-converter, an ultra-high definition converter, an inter-network connector, and a switch connected in sequence.
In order to further improve the security of the embodiment of the invention, the SDN controller is preloaded with an McAfee enterprise edition and manages the user right and the software installation right.
Referring to fig. 1, in the embodiment of the present invention, the clean switching module performs simultaneous packet transmission of the main and standby signals based on ST-2022-7, and the clean switching module receives the main and standby signals simultaneously at the broadcast terminal, and when a network failure occurs, the switching can be performed in the reverse field, so that the main and standby clean switching is completed, and the frame does not generate delay and jitter. Backup and net switching under a broadcast production domain with higher security level are provided.
Referring to fig. 5, in an embodiment of the present invention, a network clock synchronization module is further included for synchronizing the time of the switch.
The network clock synchronization module synchronizes clocks of the master switch and the standby switch based on a master-slave mode timing protocol of a network; sub-microsecond accuracy can be achieved.
In another embodiment provided by the present invention, an ultra high definition digital signal relay vehicle includes the ultra high definition digital signal relay system as described in any one of the above.
The network information source 3 is connected with the main switch 1, the slow motion server 4 is connected with the main switch 1 through the main ultra high definition network cable a and the standby ultra high definition network cable b, and the main switch 1, the switching platform 8 and the standby switch 2 are connected through the main ultra high definition network cable a and the standby ultra high definition network cable b; the safety and reliability of the rebroadcasting are ensured. The access of the main exchanger and the standby exchanger is switched through the switching platform, so that when a fault occurs, a signal source can be switched in time, and a rebroadcasting accident is avoided; the network information source comprises a network camera and a network live broadcast signal, a video recorded by the network camera is provided to the main switch 1 as the network information source, or a picture is made by a computer and other intelligent equipment and provided to the main switch 1 as the network live broadcast signal, and the switching station reserves the data of the main switch to the standby switch for urgent use; the main switch 1 transmits the signal source to the router through the signal adapter, the router transmits the signal source to the gateway, and the gateway performs format conversion and outputs the signal source to the broadcasting terminal 9. And realizing rebroadcasting.
The working principle of the invention is as follows: the network information source 3 is connected with the main switch 1, the slow motion server 4 is connected with the main switch 1 through the main ultra high definition network cable a and the standby ultra high definition network cable b, and the main switch 1, the switching platform 8 and the standby switch 2 are connected through the main ultra high definition network cable a and the standby ultra high definition network cable b; the safety and reliability of the rebroadcasting are ensured. The access of the main exchanger and the standby exchanger is switched through the switching platform, so that when a fault occurs, a signal source can be switched in time, and a rebroadcasting accident is avoided; the network information source comprises a network camera and a network live broadcast signal, a video recorded by the network camera is provided to the main switch 1 as the network information source, or a picture is made by a computer and other intelligent equipment and provided to the main switch 1 as the network live broadcast signal, and the switching station reserves the data of the main switch to the standby switch for urgent use; the main switch 1 transmits the signal source to the router through the signal adapter, the router transmits the signal source to the gateway, and the gateway performs format conversion and outputs the signal source to the broadcasting terminal 9.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (9)
1. An ultra-high-definition digital signal relay system is characterized by comprising a network information source, a slow-motion server, a switch, a switching station, an SDN controller, a multifunctional format converter, a router and a connecting wire, and further comprising:
the first input link is formed by connecting a network information source with a switch through at least two groups of connecting lines;
the second input link is formed by connecting a slow motion server and an internetwork connector with a switch through at least two groups of connecting lines;
the switches are connected through a switching platform, the switching platform controls the switches, and the SDN controller controls the switches to work; and
and the output link comprises a switch, a signal adapter, a router and an internetwork connector which are connected in sequence.
2. The ultra high definition digital signal relay system according to claim 1, wherein said output link further comprises a switch, a signal adapter, a two-channel cross converter, an ultra high definition converter, a router and an inter-network connector, which are connected in sequence.
3. The ultra high definition digital signal relay system according to claim 1, wherein said output link further comprises a high definition output link, said high definition output link comprising a switching station, a multifunctional format converter and a router connected in sequence.
4. An ultra high definition digital signal broadcasting system according to claim 3, wherein said network source or slow motion server is connected to said router respectively.
5. An ultra high definition digital signal relay system according to claim 3, wherein said router is further connected to said multifunctional format converter through a keyer.
6. The ultra high definition digital signal broadcasting system of claim 1, wherein the network source comprises a webcam and a webcast signal.
7. The system of claim 1, wherein the SDN controller comprises a redundancy backup module configured as a switch, a two-channel cross-converter, an ultra-high definition converter, an inter-network connector, and a switch connected in sequence.
8. The ultra high definition digital signal relay system according to claim 1, further comprising a network clock synchronization module for synchronizing the time of said switch.
9. An ultra high definition digital signal relay vehicle comprising the ultra high definition digital signal relay system according to any one of claims 1 to 8.
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| CN202010640735.6A CN111741237A (en) | 2020-07-06 | 2020-07-06 | Ultra-high definition digital signal relay system and ultra-high definition digital signal relay vehicle |
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