CN210381106U - High-capacity audio and video digital matrix switching system - Google Patents
High-capacity audio and video digital matrix switching system Download PDFInfo
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- CN210381106U CN210381106U CN201921795267.9U CN201921795267U CN210381106U CN 210381106 U CN210381106 U CN 210381106U CN 201921795267 U CN201921795267 U CN 201921795267U CN 210381106 U CN210381106 U CN 210381106U
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Abstract
The utility model discloses a large capacity audio frequency and video digital matrix switched systems. The system comprises: a plurality of exchange boards and control board cards; the exchange board comprises an optical port and a control port; all the exchange plates are connected through optical ports; the control board card comprises a plurality of control ports with the same number as the exchange board and an external instruction inlet for receiving an external control instruction; the control ports of the exchange board and the control ports of the control board card are connected in a one-to-one correspondence manner through control lines; the external instruction inlet is connected with a computer. The utility model provides a high capacity audio frequency and video digital matrix switched systems can expand the capacity of high definition audio frequency and video digital matrix, and has simple structure, low cost's characteristics.
Description
Technical Field
The utility model relates to a communication expansion technical field especially relates to a large capacity audio frequency and video digital matrix switched systems.
Background
The existing high-definition audio and video digital matrix is difficult to switch with large capacity no matter which principle is adopted. The general purpose is 8-path input and 8-path output; 24 input paths, 24 output paths and the like. Although the imported high-definition audio and video digital matrix can achieve about 100 input channels and 100 output channels, the structure is complex, and the price is very expensive.
Among the switching principles of the high-definition audio/video digital matrix in the prior art, a high-definition audio/video digital matrix adopts a switch board which is mainly switched through a VLAN. However, the high-definition audio/video digital matrix is limited by the capacity of the switching board card, and generally can be used only by a single board, and the capacity is expanded to 24 input channels and 24 output channels at most.
Therefore, it is a technical problem to be solved in the art to provide a system capable of expanding the capacity of the high-definition audio/video digital lineup, and having a simple structure and low cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a large capacity audio frequency and video digital matrix switched systems can expand the capacity of high definition audio frequency and video digital array appearance, and has simple structure, low cost's characteristics.
In order to achieve the above object, the utility model provides a following scheme:
a high-capacity audio and video digital matrix switching system comprises: a plurality of exchange boards and control board cards;
the exchange board comprises an optical port and a control port;
all the exchange plates are connected through optical ports;
the control board card comprises a plurality of control ports with the same number as the exchange board and an external instruction inlet for receiving an external control instruction;
the control ports of the exchange board and the control ports of the control board card are connected in a one-to-one correspondence manner through control lines;
the external instruction inlet is connected with a computer.
Optionally, the switch board further includes a plurality of input ports and a plurality of output ports.
Optionally, the number of the input network ports and the number of the output network ports are both 24.
Optionally, the external instruction inlet is a network interface or a COM interface.
Optionally, the control port of the control board card is a COM interface or a network interface.
Optionally, the number of the exchange plates is 2.
According to the utility model provides a concrete embodiment, the utility model discloses a following technological effect: the utility model provides a large capacity audio frequency and video digital matrix switched systems, external instruction entry input control instruction through the control board is in order to control a plurality of switchboard. Moreover, a plurality of switch boards are changed into one virtually for use, the capacity of the high-definition audio/video digital array capacity can be expanded, and the method has the characteristics of simple structure and low cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a high-capacity audio/video digital matrix switching system in which two switch boards are adopted in an embodiment of the present invention.
The reference signs are: 1-a first exchange board, 2-an input network port of the first exchange board, 3-an output network port of the first exchange board, 4-an optical port of the first exchange board, 5-a control port of the first exchange board, 6-a first control line, 7-a control board card, 8-a first control port of the control board card, 9-an external instruction inlet, 10-a second control port of the control board card, 11-a second control line, 12-a control port of the second exchange board, 13-an optical fiber, 14-an optical port of the second exchange board, 15-the second exchange board, 16-an output network port of the second exchange board, and 17-an input network port of the second exchange board.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a large capacity audio frequency and video digital matrix switched systems can expand the capacity of high definition audio frequency and video digital matrix, and has simple structure, low cost's characteristics.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
A high-capacity audio and video digital matrix switching system comprises: a plurality of exchange boards and a control board card.
The exchange board comprises an optical port and a control port.
The exchange boards are connected through optical ports.
The control board card comprises a plurality of control ports with the same number as the exchange board and an external instruction inlet for receiving an external control instruction. The external instruction inlet is a network interface or a COM interface. And the control ports of the control board cards are all COM interfaces or network interfaces.
And the control ports of the exchange board and the control ports of the control board card are connected in a one-to-one correspondence manner through control lines.
The external instruction inlet is connected with a computer. Specifically, the external instruction inlet is connected with a computer or other external control equipment.
Each board also includes 24 input ports and 24 output ports. The number of the input network ports and the output network ports can be selected according to actual needs, such as 12.
The structure and the working principle of the high-capacity audio/video digital matrix switching system provided by the utility model are further explained by taking the number of the switching boards as 2 as an example.
Fig. 1 is the embodiment of the utility model provides an adopt the structure schematic diagram of the high capacity audio frequency and video digital matrix switched systems of two exchange boards, as shown in fig. 1, adopt the high capacity audio frequency and video digital matrix switched systems of two exchange boards, include: the first exchange board 1, the first exchange board 14 and the control board card 7.
The first and second exchange boards comprise light port, control port, 24 input network ports and 24 output network ports.
The optical ports of the first and second switching plates are connected by an optical fiber 13.
The control board card 7 comprises two control ports and an external instruction inlet 9 for receiving an external control instruction. The external instruction inlet 9 is a network interface, a COM interface or other protocol interfaces. The control ports of the control board card 7 are all COM interfaces, network interfaces or other protocol interfaces.
The control port 5 of the first exchange board 1 is connected with the first control port 8 of the control board card 7 through a first control line 6. The control port 12 of the second switch board 15 and the second control port 10 of the control board card 7 are connected through a second control line 11. The two control ports of the control board 7 must be independent, and the control board 7 receives an external control instruction and needs to send the control instruction to two different switch boards according to logic.
The external instruction inlet 9 is connected with a computer or other control equipment.
The two switch boards have the same physical structure, and the VLAN serial numbers corresponding to the ports of the two switch boards are different, the input network port of the first switch board 1 corresponds to IN1-24, and the input network port of the second switch board 15 corresponds to IN 25-48. When more than two exchange boards are used, the serial numbers of the input network ports are analogized in turn.
The control board card 7 is provided with two control ports to control the two exchange boards and provide a network control port and a network port to the outside, and a control program is arranged in the control board card 7 to receive an instruction input from the outside through the external data inlet 9.
Each time the first switch board 1 receives an instruction sent by one control board 7, the corresponding IN1-24 port is added to the VLANs 1-24, and each IN port can be added to any VLAN or all VLANs at the same time according to the instruction. Any VLAN can also delete any IN port according to the instruction of the control board 7. The digital signals transmitted by the IN port and the OUT port IN the same VLAN are communicated. Thus, dynamic operations of adding and deleting ports are carried out in the VLAN, and dynamic switching is completed. IN the control logic it is guaranteed that at the same time each VLAN has only one IN port. At the same time, the same IN port may be present IN all VLANs. This completes the matrix switching of any input signal to any output port. The above switching principle of the digital matrix belongs to the prior art. In the prior art, the switching operation can only be completed at a single switch board. IN the present invention, the input of the first board is defined as IN1-24, the output is defined as OUT1-24, the input of the second board is defined as IN25-48, and the output is defined as OUT 25-48. The VLAN used extends to VLANs 1-48. The bus connected by the optical port can pass through all VLANs. Operations such as outputting IN1 to OUT48 are: the first control port 8 of the control board sends a command to the control port 5 of the first switch board, the first switch board adds IN1 and the optical port 4 of the first switch board to the VLAN1, and at the same time, the second control port 10 of the control board sends a command to the control port 12 of the second switch board, and the second switch board performs an operation to add the optical port of the second switch board and the OUT48 of the second switch board to the VLAN 1. The IN1 and OUT48 are linked, and the data IN1 is switched to the output of OUT 48. Adopt this kind of control principle, the utility model provides an adopt large capacity audio frequency and video digital matrix switched systems of two exchange boards just can be according to certain logic through the control integrated circuit board, send different control instruction and give different exchange boards, it is dynamic, the virtual LAN of transform that does not stop realizes the switching between the different exchange boards, with accomplishing 48 input audio frequency and video digital signal to 48 arbitrary switches of output audio frequency and video digital signal, and the connected mode through bus between the virtual LAN (the optical access of first exchange board 1 and second exchange board 15 passes through optic fibre 13 and connects), carry out the expansion of large capacity.
By analogy, if 3 switch boards are used, the matrix can be expanded to a digital switching matrix of 72 in and 72 out.
Further, a plurality of parallel optical ports may be provided in the first exchange plate 1 and the second exchange plate 15. The optical ports between any two exchange boards are connected in parallel through optical fibers and are aggregated into a bus through the exchange board cards. The polymerization operation belongs to the existing exchange technology. If the bandwidth of the optical port on one switch board can reach 10000M, then aggregating two optical ports on the switch board can make the bus throughput reach 20000M. If an audio/video digital signal 50M is adopted, an audio/video digital matrix with 400 input signals and 400 output signals can be expanded by adopting the expansion mode. More ports can be expanded later with the increase of switching transmission capacity.
Therefore, the utility model provides a high capacity audio frequency and video digital matrix switched systems, the external instruction entry input control instruction through the control board is in order to control a plurality of switchboard through certain logic. And through bus connection, data flows in different switchboard boards, and a plurality of switchboard boards are changed into a switchboard board virtually for use, so that the capacity of the high-definition audio/video digital array capacity can be expanded, and the high-definition audio/video digital array capacity expansion device has the characteristics of simple structure and low cost.
Furthermore, the utility model provides a large capacity audio frequency and video digital matrix switched systems still has following advantage:
1. the capacity is expanded, and the small audio-video digital matrix from 24 in 24 out is expanded to the audio-video digital matrix from 48 in 48 out, even the matrix can be expanded to 400 in, 400 out or more.
2. The duplication function of the switch board card basically has no signal attenuation in the switching process. One input signal is simultaneously output to 48 signals without signal attenuation.
3. The connection among the exchange board cards is carried out in a mode that the optical ports are connected with a plurality of ports for aggregation, so that the bandwidth among the board cards is ensured, and the smoothness of data is ensured.
4. And mature technologies in a network system are adopted to switch the audio/video digital matrix, so that the system is more stable and the cost is lower.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (6)
1. A high-capacity audio and video digital matrix switching system is characterized by comprising: a plurality of exchange boards and control board cards;
the exchange board comprises an optical port and a control port;
all the exchange plates are connected through optical ports;
the control board card comprises a plurality of control ports with the same number as the exchange board and an external instruction inlet for receiving an external control instruction;
the control ports of the exchange board and the control ports of the control board card are connected in a one-to-one correspondence manner through control lines;
the external instruction inlet is connected with a computer.
2. A high capacity audio-visual digital matrix switching system according to claim 1, wherein said switch board further comprises a plurality of input ports and a plurality of output ports.
3. A high capacity audio-video digital matrix switching system according to claim 2, wherein the number of said input ports and said output ports are both 24.
4. The system according to claim 1, wherein the external command entry is a network interface or a COM interface.
5. The high-capacity audio-video digital matrix switching system according to claim 1, wherein the control port of the control board card is a COM interface or a network interface.
6. A high capacity audio-visual digital matrix switching system according to claim 1, wherein the number of said switching boards is 2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921795267.9U CN210381106U (en) | 2019-10-24 | 2019-10-24 | High-capacity audio and video digital matrix switching system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921795267.9U CN210381106U (en) | 2019-10-24 | 2019-10-24 | High-capacity audio and video digital matrix switching system |
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| CN210381106U true CN210381106U (en) | 2020-04-21 |
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