CN101466033B - Distributed digital non-compression video switching equipment and method - Google Patents
Distributed digital non-compression video switching equipment and method Download PDFInfo
- Publication number
- CN101466033B CN101466033B CN2008102250383A CN200810225038A CN101466033B CN 101466033 B CN101466033 B CN 101466033B CN 2008102250383 A CN2008102250383 A CN 2008102250383A CN 200810225038 A CN200810225038 A CN 200810225038A CN 101466033 B CN101466033 B CN 101466033B
- Authority
- CN
- China
- Prior art keywords
- switch unit
- video
- bus
- bus switch
- transmission
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000006835 compression Effects 0.000 title claims description 113
- 238000007906 compression Methods 0.000 title claims description 113
- 230000005540 biological transmission Effects 0.000 claims abstract description 65
- 230000008054 signal transmission Effects 0.000 claims description 39
- 239000013307 optical fiber Substances 0.000 claims description 31
- 238000004891 communication Methods 0.000 claims description 14
- 230000003287 optical effect Effects 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 8
- 230000001629 suppression Effects 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 description 11
- 206010045178 Tunnel vision Diseases 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 101100166829 Mus musculus Cenpk gene Proteins 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003362 replicative effect Effects 0.000 description 1
Images
Abstract
The invention provides a distributed type digital non-compressed video switching device and a method thereof. The distributed type digital non-compressed video switching device comprises at least two bus switching units; each bus switching unit is connected with other bus switching units in a ring shape by a video bus and is connected with one service board at most; the bus switching unit receives a video signal transmitted by the service board which is connected with the bus switching unit or receives the video signal transmitted by the last bus switching unit by the video bus, and transmits the received video signal to the next bus switching unit by the video bus; or, the bus switching unit receives the video signal transmitted by the last bus switching unit by the video bus, transmits the video signal to the next bus switching unit by the video bus and copies and transmits the video signal to the service board which is connected with the bus switching unit. The distributed type digital non-compressed video switching device and the method can increase the transmission bandwidth of each service board; besides, the total video input and the total video output are not limited by the slot position of a machine case of the device.
Description
Technical field
The present invention relates to digital communication technology, particularly a kind of distributed digital non-compression video switching equipment and method.
Background technology
In the video monitoring industry, the video exchange technology can be divided into: the non-compression switching technology of analog video switching technology, compressed video network exchange technology and digital video.Wherein, the non-compression switching technology of digital video is the digital video switching technology that grew up in recent years, after its analog video digitlization, does not compress processing, directly exchanges by the High speed rear panel bus.The general bandwidth that adopts tens G of High speed rear panel bus can satisfy tens road exchanges to roads up to a hundred vision signal.In addition, the non-compression switching technology of digital video is also supported the optical fiber input/output interface, and digital form is all adopted in the transmission of video and exchange, can realize the long-distance video exchange very easily.
The non-compression switching technology of existing digital video mainly adopts centralized exchange, and the digital non-compression video switching equipment that adopt centralized clearing house mainly comprises main power board and each business board.As shown in Figure 1, each business board all is connected with main power board is point-to-point, the input and output of vision signal are all carried out on main power board alternately on each business board, that is to say, each business board is shared the bandwidth capacity of same main power board, and this has obviously influenced the transmission bandwidth of each business board, along with the gradually raising of video monitoring to bandwidth demand, many times, centralized exchange can not have been satisfied the user demand of business board reality.
Summary of the invention
In view of this, the invention provides a kind of distributed digital non-compression video switching equipment and method, so that improve the transmission bandwidth of each business board.
A kind of distributed digital non-compression video switching equipment, this digital non-compression video switching equipment comprises network management unit, clock unit, subtending board and at least two bus switch unit, in the machine frame of digital non-compression video switching equipment, each bus switch unit takies a groove position; Each bus switch unit passes through the backboard cascade, and connects with loopback transmission vision signal by the video bus looping; Each bus switch unit connects at most a business board, and each bus switch unit provides input and output for a connected business board, and the transmission bandwidth of each business board all reaches the bandwidth capacity of bus switch unit;
Described bus switch unit, be used to receive the business board that is connected with this bus switch unit and transmit next vision signal or receive the vision signal that the transmission of a last bus switch unit comes, give next bus switch unit with the video signal transmission that receives by video bus by video bus; Perhaps, receive the vision signal that the transmission of a last bus switch unit comes, give next bus switch unit with this video signal transmission, and duplicate this video signal transmission and give the business board that is connected with this bus switch unit by video bus by video bus;
Described network management unit, be used for receiving parameter configuration by Ethernet interface, by the asynchronous communication bus each bus switch unit is carried out parameter configuration according to this parameter configuration, so that each bus switch unit is according to the operation that the parameter configuration of self is carried out described reception, transmits or duplicated;
Wherein, describedly each bus switch unit is carried out parameter configuration comprise: the time slot of receiving video signals, the time slot of reproduction video signal, bus switch unit are to receive from the vision signal of business board or to the business board transmission video signal;
Described clock unit, being used for clock signal that clock signal that the clock source of this digital non-compression video switching equipment is produced or other digital non-video compression video switching equipment transmission come carries out jitter suppression and handles, and the clock signal after will handling is transferred to each bus switch unit, so that the operation that each bus switch unit is carried out described reception, transmits or duplicated according to the clock signal that receives;
Realize by subtending board during two above digital non-compression video switching equipment cascades, described subtending board is connected with a bus switch unit, be used to receive the vision signal that this bus switch unit sends, this vision signal is transferred to other digital non-compression video switching equipments by cascade bus, receive the vision signal that other digital non-compression video switching equipment transmission come, this vision signal is sent to the bus switch unit, thereby on two above digital non-compression video switching equipments, constitute a total loopback video bus;
The bus switch unit that is connected with subtending board also is used for receiving the vision signal that the transmission of a last bus switch unit comes by video bus, gives described subtending board with this video signal transmission; Receive the vision signal that described subtending board transmission comes, give next bus switch unit this video signal transmission;
Wherein, described cascade bus when short distance, adopt cable or long apart from the time adopt optical fiber.
A kind of method of distributed digital non-compression video exchange, this method is applied to comprise the digital non-compression video switching equipment of network management unit, clock unit, subtending board and at least two bus switch unit, in the machine frame of digital non-compression video switching equipment, each bus switch unit takies a groove position; Described each bus switch unit passes through the backboard cascade, and connects with loopback transmission vision signal by the video bus looping; , each bus switch unit connects at most a business board, and each bus switch unit provides input and output for a connected business board, and the transmission bandwidth of each business board all reaches the bandwidth capacity of bus switch unit; This method comprises:
Described network management unit receives parameter configuration by Ethernet interface, by the asynchronous communication bus bus switch unit is carried out parameter configuration according to this parameter configuration;
Described clock unit carries out the jitter suppression processing with the clock signal or the next clock signal of other digital non-compression video switching equipments transmission of the clock source generation of this digital non-compression video switching equipment, and the clock signal after will handling is transferred to each bus switch unit;
Described bus switch unit receives the next vision signal of connected business board transmission or receives the vision signal that the transmission of a last bus switch unit comes by video bus, gives next bus switch unit by video bus with the video signal transmission that receives; Perhaps, receive the vision signal that the transmission of a last bus switch unit comes, give next bus switch unit with this video signal transmission, and duplicate this video signal transmission and give the business board that is connected with this bus switch unit by video bus by video bus;
Wherein said each bus switch unit is according to the parameter configuration of described network management unit to the bus switch unit, and according to the clock signal that receives, the operation of carrying out described reception, transmit or duplicating;
Describedly each bus switch unit is carried out parameter configuration comprise: the time slot of receiving video signals, the time slot of reproduction video signal, bus switch unit are to receive from the vision signal of business board or to the business board transmission video signal;
When two above digital non-compression video switching equipment cascades, realize by subtending board, described subtending board is connected with a bus switch unit, receive the vision signal that this bus switch unit sends, this vision signal is transferred to other non-compression video switching equipments by cascade bus, receive the vision signal that other digital non-compression video switching equipment transmission come, this vision signal is sent to the bus switch unit, thereby on two above digital non-compression video switching equipments, constitute a total loopback video bus;
Wherein, the bus switch unit that is connected with subtending board receives the vision signal that the transmission of a last bus switch unit comes by video bus, gives described subtending board with this video signal transmission; Receive the vision signal that described subtending board transmission comes, give next bus switch unit this video signal transmission;
Described cascade bus when short distance, adopt cable or long apart from the time adopt optical fiber.
As can be seen from the above technical solutions, in distributed digital non-compression video switching equipment provided by the invention and method, each bus switch unit connects by the video bus looping, transmit vision signal by video bus loopback on each bus switch unit, and each bus switch unit provides input and output for a connected business board, thereby when between each business board of assurance, can communicate by letter, make the transmission bandwidth of each business board all can reach the bandwidth capacity of bus switch unit, and a plurality of business boards are shared this bandwidth capacity in needn't the digital non-compression video switching technology of image set Chinese style, obviously, improved the transmission bandwidth of each business board greatly, the prior art of comparing can satisfy higher bandwidth demand.
Description of drawings
Fig. 1 is the structure chart of centralized digital non-compression video switching equipment of the prior art;
The structural representation of the distributed digital non-compression video switching equipment that Fig. 2 provides for the embodiment of the invention;
The connection diagram of the bus switch unit that Fig. 3 provides for the embodiment of the invention;
The analog video input card that Fig. 4 provides for the embodiment of the invention and the annexation figure of bus switch unit;
The video optical fiber access card that Fig. 5 provides for the embodiment of the invention and the annexation figure of bus switch unit;
The analog video output card that Fig. 6 provides for the embodiment of the invention and the annexation figure of bus switch unit;
The Optical Fiber Interface Board that Fig. 7 provides for the embodiment of the invention and the annexation figure of bus switch unit;
The optical branching board that Fig. 8 provides for the embodiment of the invention and the annexation figure of bus switch unit;
The schematic diagram that the employing subtending board that Fig. 9 provides for the embodiment of the invention carries out a plurality of digital non-compression video switching equipments cascade;
The cabinet groove bitmap of the distributed digital non-compression video switching equipment that Figure 10 provides for the embodiment of the invention;
The equipment connecting relation instance graph that Figure 11 provides for the embodiment of the invention.
Embodiment
In order to make the purpose, technical solutions and advantages of the present invention clearer, describe the present invention below in conjunction with the drawings and specific embodiments.
At first distributed digital non-compression video switching equipment provided by the invention is described in detail, the structural representation of the distributed digital non-compression video switching equipment that Fig. 2 provides for the embodiment of the invention, as shown in Figure 2, this digital non-compression video switching equipment mainly comprises: at least two bus switch unit, connect by the video bus looping between each bus switch unit, each bus switch unit connects a business board at most.
Each bus switch unit, be used to receive the business board that is connected with this bus switch unit and transmit next vision signal or receive the vision signal that the transmission of a last bus switch unit comes, give next bus switch unit with the video signal transmission that receives by video bus by video bus; Perhaps, receive a last vision signal that the bus switch unit sends, give next bus switch unit with this video signal transmission, and duplicate this video signal transmission and give the business board that is connected with this bus switch unit by video bus by video bus.
This equipment can also comprise: the business board that is connected with the bus switch unit; Each business board, the video signal transmission that is used for video equipment or other digital non-compression video switching equipment are sent is given the bus switch unit that links to each other with this business board; The video signal transmission that the bus switch unit transmission that perhaps, will be connected with this business board is given video equipment or other digital non-compression video switching equipment.
Wherein, difference according to each business board functional type, the vision signal that each business board receives can be analog video signal or optical fiber vision signal, but be transferred to the bus switch unit after being converted to digital video signal after each business board can be handled the analog video signal that receives or optical fiber vision signal, promptly the signal by the video bus transmission is a digital video signal.Equally, the vision signal of each business board output can be analog video signal or optical fiber vision signal, for example, the digital video signal that each business board can come the transmission of bus switch unit is converted to analog video signal and sends to video equipment, also can be converted to the optical fiber vision signal and send to other digital non-compression video switching equipment or video equipment.The functional type of concrete business board and concrete processing mode will be described in detail in follow-up embodiment.
In addition, this equipment can also comprise subtending board, and subtending board is connected with a bus switch unit, is used to receive the vision signal that this bus switch unit sends, and gives other digital non-compression video switching equipment with this video signal transmission; Receive the vision signal that other digital non-compression video switching equipment transmission comes, this vision signal is sent to the bus switch unit.
The bus switch unit that is connected with subtending board can also be used for receiving a last vision signal that the bus switch unit sends by video bus, gives subtending board with this video signal transmission; The vision signal that the receiver stage yoke plate sends is given next bus switch unit with this video signal transmission.
Subtending board can be used in this locality a plurality of digital non-compression video switching equipments being carried out cascade, imports sum or video output sum thereby enlarge video, satisfies the actual exchange demand, and concrete connected mode and application will be described in detail in follow-up embodiment.
This equipment can also comprise: network management unit, be used for receiving parameter configuration by Ethernet interface, and by the asynchronous communication bus each bus switch unit is carried out parameter configuration according to this parameter configuration; Perhaps, by the asynchronous communication bus each business board is carried out alarm management.
Each bus switch unit is according to the parameter configuration of network management unit to this bus switch unit, the operation of carrying out above-mentioned reception, transmit or duplicating.
A Network Management Equipment can be set in the whole video monitor network each digital non-compression video switching equipment is carried out centralized control, Network Management Equipment sends to network management unit in each digital non-compression video switching equipment by Ethernet interface with parameter configuration, and this network management unit utilizes this parameter configuration by the asynchronous communication bus each bus switch unit to be carried out parameter configuration.For example, can export the business board of the vision signal of which business board input by the configuration bus crosspoint to this bus switch unit connection, usually, the vision signal of each business board input is transmitted on video bus by the mode of time-division, if the video bus of business board 1 input need be exported on business board 2, then need the concrete receiving slot parameter of bus switch configuration of cells, and be the concrete output time solt parameter of bus switch configuration of cells that business board 2 connects for business board 1 connection.
In addition, network management unit can also be undertaken obtaining the state information of each business board alternately by asynchronous communication bus and each business board, when the state of business board takes place can carry out alarming processing when unusual, thus the normal operation of the equipment of assurance.
Usually each digital non-compression video switching equipment need adopt same clock in the whole video monitor network, can on a video exchange equipment clock source be set therein, for example, the clock source is set in being in the digital non-compression video switching equipment of center, and the clock signal that this clock source produces is transferred to other digital non-compression video switching equipment by the cascade bus of fibre circuit or subtending board.At this moment, this equipment can also comprise: clock unit, be used for clock signal that clock signal that the clock source of this digital non-compression video switching equipment is produced or the transmission of other digital non-compression video switching equipment come and carry out jitter suppression and handle, and the clock signal after will handling is transferred to each bus switch unit.
The operation that the bus switch unit is carried out above-mentioned reception, transmits or duplicated according to the clock signal that receives.
Clock signal is through after the processing of clock unit, and shake can be inhibited, and clock unit can carry out auto switching according to the quality of the clock signal that receives, and guarantees that phase place is continuous when switching, and clock unit can adopt clock board to realize.
For an embodiment structure of bus switch unit is described below, as shown in Figure 3, in the machine frame of digital non-compression video switching equipment, each bus switch unit takies a groove position, it can be transferred to next bus switch unit to the vision signal that the transmission of a last bus switch unit comes by video bus, simultaneously, can also receive the vision signal of service card input or the vision signal of duplicating to service card output.Be output as example with 96 road video buss, the input of 8 road videos and 8 road videos among Fig. 3, each bus switch unit is by the backboard cascade, in machine frame during last bus switch unit, 96 road video buss are looped back to first bus switch unit again, thereby looping connects, each bus switch unit is one 96 tunnel bus switching matrix, and it can adopt the matrix switch card to realize.
Business board in the digital non-compression video switching equipment can adopt multiple function, is specifically as follows analog video input card, analog video output card, video optical fiber access card, Optical Fiber Interface Board or optical branching board etc.
The analog video input card that Fig. 4 provides for the embodiment of the invention and the annexation figure of bus switch unit, the analog video input card is used to receive the analog video signal such as the input of video equipments such as video camera, this analog video signal is carried out being transferred to the bus switch unit after video coding forms digital video signal, and receiving 8 road analog video signals with the analog video input card among Fig. 4 is example.
The video optical fiber access card that Fig. 5 provides for the embodiment of the invention and the annexation figure of bus switch unit, video optical fiber input card is used for the optical fiber vision signal that receiver, video equipment transmits by the far-end video optical multiplexer, this optical fiber vision signal is carried out outputing to the bus switch unit behind the recompile, be example to receive 4 road optical fiber among Fig. 5, wherein, every road optical fiber can transmit 2 tunnel vision signals.
The analog video output card that Fig. 6 provides for the embodiment of the invention and the annexation figure of bus switch unit, the analog video output card is used to receive the digital video signal that the transmission of bus switch unit comes, this digital video signal being carried out forming behind the video decode analog video signal send to such as video equipments such as monitors, is example to export 8 road analog video signals among Fig. 6.
The Optical Fiber Interface Board that Fig. 7 provides for the embodiment of the invention and the annexation figure of bus switch unit, the wherein part that Optical Fiber Interface Board is used for the vision signal that will transmit on the video bus is transferred to optical fiber, obtains vision signal from optical fiber and is transferred on the video bus by the bus switch unit.The normal light interface board is used between a plurality of digital non-compression video switching equipments that annular connects or the connection of chain, and wherein annular connection can realize that the protection between a plurality of digital non-compression video switching equipments connects.Among Fig. 7 being example by the 2.5G Optical Fiber Transmission with 16 or 32 tunnel vision signal.
The vision signal that the optical branching board that Fig. 8 provides for the embodiment of the invention and the annexation figure of bus switch unit, optical branching board are used for transmitting on the video bus is given other digital non-compression video switching equipment by Optical Fiber Transmission.Optical branching board can be used for chain or the tree-like connection between a plurality of digital non-compression video switching equipments.Outputing to 2.5G optical fiber with 16 tunnel vision signal among Fig. 8 is example.
When a digital non-compression video switching equipment does not satisfy switching requirement, need increase business board in this locality, and can't insert business board in the machine frame of digital non-compression video switching equipment the time, can a plurality of digital non-compression video switching equipments be carried out cascade by subtending board and satisfy switching requirement.The schematic diagram that the employing subtending board that Fig. 9 provides for the embodiment of the invention carries out a plurality of digital non-compression video switching equipments cascade, as shown in Figure 9, can on each digital non-compression video switching equipment, insert a subtending board, the subtending board of first digit non-compression video switching equipment is after connected bus switch unit (the bus switch unit is not shown the figure) obtains vision signal, be transferred to the subtending board of second digit non-compression video switching equipment, in the second digit non-compression video switching equipment, carry out loopback, when being looped back to the bus switch unit that subtending board connects, this subtending board outputting video signal is to the third digit non-compression video switching equipment, by that analogy, the vision signal of exporting until the subtending board of last digital non-compression video switching equipment inputs to the subtending board of first digit non-compression video switching equipment again, thereby constitutes a total loopback video bus on a plurality of digital non-compression video switching equipments.Among the figure, the cascade bus between the subtending board can when short distance, adopt cable or long apart from the time adopt optical fiber.
The cabinet groove bitmap of the distributed digital non-compression video switching equipment that Figure 10 provides for the embodiment of the invention, as shown in figure 10, bus switch unit, network management unit and clock unit have the holddown groove position among this embodiment, this cabinet has 18 universal vat positions, can insert business board and subtending board.Wherein, the groove position at universal vat position and network management unit place is cabinet back card/back board groove position, and the groove position at the groove position at clock unit place and place, bus switch unit is cabinet front card groove position.When cabinet is designed, can carry out according to the demand of reality, for example, can adopt 19 inches 8U cabinets of standard, each business board uses 6U part wherein, and power-supply system is used the 2U part, wherein, 19 inches is the width of cabinet, and U is the height unit of cabinet, and 1U is 44.45 millimeters; The power supply input can be adopted alternating current 220V, and cabinet can provide 2 300W power modules, adopts Hot Spare design (power-supply system is not shown among the figure).
The digital non-compression video switching equipment that provides among the above embodiment is provided method provided by the invention, promptly comprise at least two bus switch unit in this digital non-compression video switching equipment, each bus switch unit connects by the video bus looping, each bus switch unit connects a business board at most, and this method is specially:
The bus switch unit receives the next vision signal of connected business board transmission or receives the vision signal that the transmission of a last bus switch unit comes by video bus, gives next bus switch unit by video bus with the video signal transmission that receives; Perhaps, receive the vision signal that the transmission of a last bus switch unit comes, give next bus switch unit with this video signal transmission, and duplicate this video signal transmission and give the business board that is connected with this bus switch unit by video bus by video bus.
With syndeton shown in Figure 11 is example, suppose to comprise in this digital non-compression video switching equipment 18 bus switch unit, these 18 bus switch unit loopings connect, and each bus switch unit continues to be transferred to next bus switch unit by video bus from the vision signal that a last bus switch unit receives.Simultaneously, the bus switch unit can be from the business board receiving video signals that connects, be transferred on the video bus according to time slot corresponding, for example, after business board 1 receives vision signal from video equipment, it is to be transferred to bus switch unit 1 after the digital signal that this vision signal is carried out treatment conversion, the time slot that business board 1 can be given according to configuration in bus switch unit 1 with video signal transmission to video bus, transmit on the video bus of loopback, this business board 1 can be analog video input card or video optical fiber access card etc.; Perhaps, after the bus switch unit can duplicate the vision signal of transmitting on the video bus, be transferred to business board, for example, if business board 2 need get access to the vision signal of business board 1, then the vision signal in bus switch unit 2 duplication service plates 1 time slot corresponding is given business board 2 with the video signal transmission of duplicating, be transferred to other video equipment by business board 2, this business board 2 can be analog video output card etc.In addition, bus switch unit 3 can also be connected with other digital non-compression video switching equipment by business board 3, carries out the mutual of video data, and the business board 3 of this moment can be Optical Fiber Interface Board or optical branching board etc.
In addition, when the video of digital non-compression video switching equipment input sum or video output sum can not satisfy the demands, mode that can be by connecting subtending board on the bus switch unit increased video input sum or video output sum with other local digital non-compression video switching equipment cascade.At this moment, this method can also comprise: the subtending board that is connected with the bus switch unit receives the vision signal that other digital non-compression video switching equipment transmission comes, give the bus switch unit with this video signal transmission, next bus switch unit is given with this video signal transmission in the bus switch unit; The bus switch unit that is connected with this subtending board receives the vision signal that the transmission of a last bus switch unit comes by video bus, give subtending board with this video signal transmission, this subtending board is given other digital non-compression video switching equipment with the video signal transmission that the transmission of bus switch unit comes.
It still is example with Figure 11, can on bus switch unit 18, connect a subtending board, communicate by letter with other digital non-compression video switching equipment by this subtending board, after bus switch unit 18 receives the vision signal of sending bus switch unit 17, this vision signal is sent to other digital non-compression video switching equipment by subtending board, and be transferred to bus switch unit 1 by video bus after receiving the vision signal that other digital non-compression video switching equipment sends by subtending board, thereby constitute a big loopback by video bus with bus switch unit in other digital non-compression video switching equipment.
In addition, this method can also comprise: the network management unit in this digital non-compression video switching equipment receives parameter configuration by Ethernet interface, by the asynchronous communication bus each bus switch unit is carried out parameter configuration according to this parameter configuration, each bus switch unit is according to the operation that the parameter configuration of self is carried out described reception, transmits or duplicated.
The parameter configuration that each bus switch unit is carried out can comprise: at which time slot receiving video signals, the vision signal of which time slot in the replicating video bus, this bus switch unit are to receive from the vision signal of business board or to the business board transmission video signal etc.
In addition, each business board can also report the state information of this business board by the asynchronous communication bus to network management unit.Network management unit can obtain the state information of each business board, each business board is carried out processing such as alarm management.
This method can further include: the clock unit in the digital non-compression video switching equipment carries out the jitter suppression processing with the clock signal or the next clock signal of other digital non-compression video switching equipment transmission of the clock source generation of this digital non-compression video switching equipment, and the clock signal after will handling is transferred to described each bus switch unit, the operation that each bus switch unit is carried out described reception, transmits or duplicated according to the clock signal that receives.Wherein, other digital non-compression video switching equipment can pass through the cascade bus of fibre circuit or subtending board to this digital non-compression video switching equipment transmit clock signal.
By above description as can be seen, distributed digital non-compression video switching equipment provided by the invention and digital non-compression video switching method have the following advantages:
1) each bus switch unit connects by the video bus looping, transmit vision signal by video bus loopback on each bus switch unit, and each bus switch unit provides input and output for a connected business board, thereby when between each business board of assurance, can communicate by letter, make the transmission bandwidth of each business board all can reach the bandwidth capacity of bus switch unit, and needn't share this bandwidth capacity by a plurality of business boards, obviously, improved the transmission bandwidth of each business board greatly, the prior art of comparing can satisfy higher bandwidth demand.
2) this digital non-compression video switching equipment can be by subtending board and other digital non-compression video switching equipment cascade, make each the bus switch unit in a plurality of digital non-compression video switching equipments constitute big video bus loopback, thereby realize video input sum and any increase according to the actual requirements of video output sum, and needn't be subjected to the restriction of digital non-compression video switching equipment groove position.
3) owing to there is not main power board, and use the bus loop back design of each bus switch unit, each bus switch unit outputting video signal does not influence this vision signal time the business board and outputs to other business board, thereby realize easily a bit importing multiple spot output, or some output of multiple spot input.And, need not complicated core bus design.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (6)
1. distributed digital non-compression video switching equipment, it is characterized in that, this digital non-compression video switching equipment comprises network management unit, clock unit, subtending board and at least two bus switch unit, in the machine frame of digital non-compression video switching equipment, each bus switch unit takies a groove position; Each bus switch unit passes through the backboard cascade, and connects with loopback transmission vision signal by the video bus looping; Each bus switch unit connects at most a business board, and each bus switch unit provides input and output for a connected business board, and the transmission bandwidth of each business board all reaches the bandwidth capacity of bus switch unit;
Described bus switch unit, be used to receive the business board that is connected with this bus switch unit and transmit next vision signal or receive the vision signal that the transmission of a last bus switch unit comes, give next bus switch unit with the video signal transmission that receives by video bus by video bus; Perhaps, receive the vision signal that the transmission of a last bus switch unit comes, give next bus switch unit with this video signal transmission, and duplicate this video signal transmission and give the business board that is connected with this bus switch unit by video bus by video bus;
Described network management unit, be used for receiving parameter configuration by Ethernet interface, by the asynchronous communication bus each bus switch unit is carried out parameter configuration according to this parameter configuration, so that each bus switch unit is according to the operation that the parameter configuration of self is carried out described reception, transmits or duplicated;
Wherein, describedly each bus switch unit is carried out parameter configuration comprise: the time slot of receiving video signals, the time slot of reproduction video signal, bus switch unit are to receive from the vision signal of business board or to the business board transmission video signal;
Described clock unit, being used for clock signal that clock signal that the clock source of this digital non-compression video switching equipment is produced or other digital non-video compression video switching equipment transmission come carries out jitter suppression and handles, and the clock signal after will handling is transferred to each bus switch unit, so that the operation that each bus switch unit is carried out described reception, transmits or duplicated according to the clock signal that receives;
Realize by subtending board during two above digital non-compression video switching equipment cascades, described subtending board is connected with a bus switch unit, be used to receive the vision signal that this bus switch unit sends, this vision signal is transferred to other digital non-compression video switching equipments by cascade bus, receive the vision signal that other digital non-compression video switching equipment transmission come, this vision signal is sent to the bus switch unit, thereby on two above digital non-compression video switching equipments, constitute a total loopback video bus;
The bus switch unit that is connected with subtending board also is used for receiving the vision signal that the transmission of a last bus switch unit comes by video bus, gives described subtending board with this video signal transmission; Receive the vision signal that described subtending board transmission comes, give next bus switch unit this video signal transmission;
Wherein, described cascade bus when short distance, adopt cable or long apart from the time adopt optical fiber.
2. equipment according to claim 1 is characterized in that, this equipment also comprises: the business board that is connected with described bus switch unit;
Described business board, the video signal transmission that is used for video equipment or other digital non-compression video switching equipment are sent is given the bus switch unit that is connected with this business board; The video signal transmission that the bus switch unit transmission that perhaps, will be connected with this business board is given video equipment or other digital non-compression video switching equipment.
3. equipment according to claim 1 and 2 is characterized in that, described business board is specially: analog video input card, analog video output card, video optical fiber access card, Optical Fiber Interface Board or optical branching board.
4. equipment according to claim 1 is characterized in that, described network management unit also is used for obtaining by the asynchronous communication bus state information of each described business board;
Described business board also is used for reporting to described network management unit by the asynchronous communication bus state information of this business board.
5. the method for distributed digital non-compression video exchange, it is characterized in that, this method is applied to comprise the digital non-compression video switching equipment of network management unit, clock unit, subtending board and at least two bus switch unit, in the machine frame of digital non-compression video switching equipment, each bus switch unit takies a groove position; Described each bus switch unit passes through the backboard cascade, and connects with loopback transmission vision signal by the video bus looping; Each bus switch unit connects at most a business board, and each bus switch unit provides input and output for a connected business board, and the transmission bandwidth of each business board all reaches the bandwidth capacity of bus switch unit; This method comprises:
Described network management unit receives parameter configuration by Ethernet interface, by the asynchronous communication bus bus switch unit is carried out parameter configuration according to this parameter configuration;
Described clock unit carries out the jitter suppression processing with the clock signal or the next clock signal of other digital non-compression video switching equipments transmission of the clock source generation of this digital non-compression video switching equipment, and the clock signal after will handling is transferred to each bus switch unit;
Described bus switch unit receives the next vision signal of connected business board transmission or receives the vision signal that the transmission of a last bus switch unit comes by video bus, gives next bus switch unit by video bus with the video signal transmission that receives; Perhaps, receive the vision signal that the transmission of a last bus switch unit comes, give next bus switch unit with this video signal transmission, and duplicate this video signal transmission and give the business board that is connected with this bus switch unit by video bus by video bus;
Wherein said each bus switch unit is according to the parameter configuration of described network management unit to the bus switch unit, and according to the clock signal that receives, the operation of carrying out described reception, transmit or duplicating;
Describedly each bus switch unit is carried out parameter configuration comprise: the time slot of receiving video signals, the time slot of reproduction video signal, bus switch unit are to receive from the vision signal of business board or to the business board transmission video signal;
When two above digital non-compression video switching equipment cascades, realize by subtending board, described subtending board is connected with a bus switch unit, receive the vision signal that this bus switch unit sends, this vision signal is transferred to other non-compression video switching equipments by cascade bus, receive the vision signal that other digital non-compression video switching equipment transmission come, this vision signal is sent to the bus switch unit, thereby on two above digital non-compression video switching equipments, constitute a total loopback video bus;
Wherein, the bus switch unit that is connected with subtending board receives the vision signal that the transmission of a last bus switch unit comes by video bus, gives described subtending board with this video signal transmission; Receive the vision signal that described subtending board transmission comes, give next bus switch unit this video signal transmission;
Described cascade bus when short distance, adopt cable or long apart from the time adopt optical fiber.
6. method according to claim 5 is characterized in that, this method also comprises: described business board reports the state information of this business board by the network management unit of asynchronous communication bus in described digital non-compression video switching equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102250383A CN101466033B (en) | 2008-10-24 | 2008-10-24 | Distributed digital non-compression video switching equipment and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102250383A CN101466033B (en) | 2008-10-24 | 2008-10-24 | Distributed digital non-compression video switching equipment and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101466033A CN101466033A (en) | 2009-06-24 |
| CN101466033B true CN101466033B (en) | 2010-12-22 |
Family
ID=40806345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102250383A Expired - Fee Related CN101466033B (en) | 2008-10-24 | 2008-10-24 | Distributed digital non-compression video switching equipment and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101466033B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101860738A (en) * | 2010-04-02 | 2010-10-13 | 武汉微创光电股份有限公司 | Ethernet-based transmitting and receiving method of uncompressed video |
| CN103037170B (en) * | 2011-10-10 | 2015-11-25 | 杭州海康威视数字技术股份有限公司 | Monitor video matrix system, network and cascade switching thereof, bandwidth adjusting method |
| CN103259748B (en) * | 2013-05-24 | 2016-03-16 | 杭州华三通信技术有限公司 | The web plate of network communication equipment, network communication equipment and for regulating the method for switching bandwidth |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6570880B1 (en) * | 1998-08-21 | 2003-05-27 | Adc Telecommunications, Inc. | Control data over a ring network |
| CN101115250A (en) * | 2007-08-10 | 2008-01-30 | 陈浩 | Universal multimedia information interchange terminal and uses thereof |
| CN101170484A (en) * | 2006-10-23 | 2008-04-30 | 深圳市吉孚通信科技有限公司 | A switching chip and switching device based on non compression transmission protocol |
| CN101198029A (en) * | 2007-04-13 | 2008-06-11 | 东华大学 | Remote video monitoring system and method based on soft commutation |
-
2008
- 2008-10-24 CN CN2008102250383A patent/CN101466033B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6570880B1 (en) * | 1998-08-21 | 2003-05-27 | Adc Telecommunications, Inc. | Control data over a ring network |
| CN101170484A (en) * | 2006-10-23 | 2008-04-30 | 深圳市吉孚通信科技有限公司 | A switching chip and switching device based on non compression transmission protocol |
| CN101198029A (en) * | 2007-04-13 | 2008-06-11 | 东华大学 | Remote video monitoring system and method based on soft commutation |
| CN101115250A (en) * | 2007-08-10 | 2008-01-30 | 陈浩 | Universal multimedia information interchange terminal and uses thereof |
Non-Patent Citations (1)
| Title |
|---|
| 夏婷.非压缩数字视频监控系统的交换控制研究.武汉理工大学硕士学位论文.2008,正文第5-19页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101466033A (en) | 2009-06-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5523868A (en) | Apparatus and method for monitoring power loss in a telecommunications system | |
| CN105743566B (en) | A kind of double-PON port ONU optical link pretection switch devices and guard method | |
| CN101237254A (en) | Optical fiber protection inverse device, method and passive optical network system with the device | |
| CN101394309A (en) | Cluster system expanding method, apparatus and cluster system | |
| CN103763161A (en) | Tri-network integration access module and control method thereof | |
| WO2021129885A1 (en) | Ip network-based audio/video transmission method and system | |
| CN110531950A (en) | A kind of video card for supporting KVM to encode | |
| CN101466033B (en) | Distributed digital non-compression video switching equipment and method | |
| CN105871614A (en) | Protection method and device of board cards in communication device | |
| CN102025421A (en) | Gigabit broadband isolation pseudo-synchronous digital hierarchical (PDH) optical transmitter and receiver | |
| CN101001118A (en) | Multiplexer cascade optical-fibre terminal system | |
| CN111131933B (en) | FC dual-redundancy switch configuration management device and configuration management method | |
| CN110062303B (en) | Mesh network-based self-adaptive high-capacity cross optical communication equipment architecture | |
| CN107105355B (en) | Switching method and switching system | |
| CN102055962B (en) | Video monitoring system and method based on concentrated coder and decoder as well as concentrated coder and decoder | |
| CN112040195B (en) | Digital centralized control equipment and method | |
| CN204761436U (en) | Electric power collection system of two MAC protections of two PON | |
| CN201540568U (en) | Double CPU system platform with coprocessing function | |
| CN203645769U (en) | High definition digital video monitoring device based on optical fiber network | |
| CN110676818B (en) | In-situ bus protection method and system based on star network topology | |
| TW381234B (en) | Method and system for overhead controlled switching | |
| CN205051696U (en) | Optical cable activestandby routing control ware | |
| CN111526067B (en) | Network shunt and communication method of network shunt | |
| WO2021068335A1 (en) | Data processing method, apparatus and storage medium | |
| CN101217496A (en) | A data transmission method, system and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING VORX TELECOM TECHNOLOGY CO., LTD. Free format text: FORMER NAME: BEIJING VORX TELECOMMUNICATIONS CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 100083 Beijing City, Haidian District Xueyuan Road No. 30 Fangxing building room 1002 Patentee after: VORX TELECOMMUNICATIONS Co.,Ltd. Address before: 100097 Beijing City, Haidian District Xueyuan Road No. 30 Fangxing building room 1002 Patentee before: Beijing Vorx Telecommunications Co.,Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 100093 Beijing city Haidian District minzhuang Road No. 3 Building No. 5 Yuquan Huigu Tsinghua Science Park on the ground floor on the west side of room 101 Patentee after: VORX TELECOMMUNICATIONS Co.,Ltd. Address before: 100083 Beijing City, Haidian District Xueyuan Road No. 30 Fangxing building room 1002 Patentee before: VORX TELECOMMUNICATIONS Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190903 Address after: 100093 Beijing city Haidian District minzhuang Road No. 3 Building No. 5 Yuquan Huigu Tsinghua Science Park on the ground floor on the west side of room 101 Co-patentee after: BEIJING VORXSOFT TECHNOLOGY Co.,Ltd. Patentee after: VORX TELECOMMUNICATIONS Co.,Ltd. Address before: 100093 Beijing city Haidian District minzhuang Road No. 3 Building No. 5 Yuquan Huigu Tsinghua Science Park on the ground floor on the west side of room 101 Patentee before: VORX TELECOMMUNICATIONS Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101222 Termination date: 20211024 |