CN210781064U - Large-scale video display control matrix equipment based on channel multiplexing technology - Google Patents
Large-scale video display control matrix equipment based on channel multiplexing technology Download PDFInfo
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- CN210781064U CN210781064U CN201922264886.1U CN201922264886U CN210781064U CN 210781064 U CN210781064 U CN 210781064U CN 201922264886 U CN201922264886 U CN 201922264886U CN 210781064 U CN210781064 U CN 210781064U
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Abstract
The utility model belongs to the technical field of the video shows accuse, concretely relates to extensive video shows accuse matrix equipment based on passageway multiplexing technique, aim at solving the problem that prior art can't realize extensive multichannel video interconnection and switch. The utility model discloses a: each input module acquires N paths of videos, performs video copying and multiplexing, divides the videos into M multiplied by N groups and sends the groups to the switching unit; the switching unit comprises at least one switching card, acquires the video groups and respectively sends the video groups to corresponding output modules based on the first user instruction; and each output module extracts any one path of video in the video group based on the second user instruction and outputs the video through a corresponding video interface chip. The utility model discloses every video input/output port all the way can transmit multichannel video service, and the maximum scale of equipment is not restricted to the interface quantity of chip, can satisfy the multichannel video interconnection switching demand of the extensive scene of user.
Description
Technical Field
The utility model belongs to the technical field of the video shows accuse, concretely relates to extensive video shows accuse matrix equipment based on channel multiplexing technique.
Background
The video display and control equipment mainly comprises a video matrix and a splicing processor. The video matrix refers to an electronic device which outputs m paths of video signals to n paths of monitoring equipment randomly by an array switching method. There are some video matrices, also known as audio-visual matrices, which have audio switching capability and are capable of switching video and audio signals synchronously. The current video matrix has two main categories, analog matrix and digital matrix, in terms of its realization method. Video matrices are commonly used in various monitoring applications. The video splicing controller is professional video processing and control equipment, and has the main functions of dividing a video signal into a plurality of display units, outputting the divided display unit signals to a plurality of display terminals, and completing splicing a plurality of display screens to form a complete image.
In the existing video display control device, the interconnection switching of the video service backplane side is realized by a crosspoint chip, each input port of the crosspoint is connected with one input video, each output port of the crosspoint is connected with one output video, and the functions of switching connection and copying output of the video service are realized by configuring the connection relationship from input to output in the chip. Each input/output port of the crosspoint can only transmit one path of video traffic, which results in the maximum size of the device being limited by the number of interfaces of the chip. At present, the scale of the equipment can not meet the requirements of users, and a larger-scale equipment is urgently needed to realize the interconnection switching of multiple paths of videos.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned problem in the prior art, that is, the prior art can not realize the problem of interconnection and switching of large-scale multi-channel videos, the utility model provides a large-scale video display and control matrix device based on channel multiplexing technology, which comprises a back plate, a power module, a main control module, a bellows and a case, and the video display and control matrix device further comprises one or more input modules, a switching unit and one or more output modules;
the input module is used for acquiring N paths of videos, copying each path of video in the N paths of videos into N parts, recombining the N parts of videos into N video groups, multiplexing channels and then sending the N video groups to the switching unit;
the switching unit respectively acquires N video groups sent by one or more input modules, and respectively sends each video group to a corresponding output module in one or more output modules based on an acquired first user instruction;
the output module is used for acquiring the video group sent by the switching unit, extracting any path of video in the video group based on the acquired second user instruction and outputting the video.
In some preferred embodiments, "recombining N parts of N videos into N video groups" comprises:
and taking the videos from different first video interface chips in the N parts of N videos as a group to obtain N video groups.
In some preferred embodiments, the input module is provided with N first video interface chips, N first backplane high-speed channels; the first video interface chip is used for acquiring a video; the first backplane high speed channel is for outputting a video set after being recombined.
In some preferred embodiments, the switching unit comprises one or more switch cards; the switching unit is provided with H video input channels and H video output channels.
In some preferred embodiments, the output module is provided with C second backplane high-speed channels, C second video interface chips; the second backboard high-speed channel is used for acquiring a video group; the second video interface chip is used for outputting any path of video extracted based on a second user instruction.
In some preferred embodiments, the switching unit is further provided with a first micro control unit;
the first micro control unit is used for acquiring a first user instruction sent by a main control module and matching the M video output interfaces of the switching unit with the second backboard high-speed channels of the C output modules based on the first user instruction.
In some preferred embodiments, the output module is further provided with a second micro control unit;
the second micro control unit is used for acquiring a second user instruction sent by the main control module and extracting any one path of video in a video group of each second backboard high-speed channel of each output module based on the second user instruction.
In some preferred embodiments, one of the FPGA, DSP and ASIC chips is used as a backboard high-speed channel for video transmission.
The utility model has the advantages that:
the utility model discloses extensive video shows accuse matrix equipment based on channel multiplexing technique through video duplication reorganization, channel multiplexing, video extraction technique, and each way video input/output port can transmit multichannel video service, and the maximum scale of equipment is not subject to the interface quantity of chip, realizes the very big extension of equipment scale, improve equipment integration level, reduces port average cost and average function, can satisfy the application demand of the more extensive scene of user.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a frame schematic diagram of a large-scale video display control matrix device based on a channel multiplexing technology of the present invention;
fig. 2 is a schematic diagram of a 320-channel video switching device framework according to an embodiment of the large-scale video display control matrix device based on the channel multiplexing technology of the present invention;
fig. 3 is a schematic diagram of a 2-way input module frame of an embodiment of the large-scale video display control matrix device based on the channel multiplexing technology of the present invention;
fig. 4 is a frame diagram of a 160-channel video switching card according to an embodiment of the large-scale video display control matrix device based on the channel multiplexing technology of the present invention;
fig. 5 is the utility model discloses 2 way output module frame sketch map of a large-scale video display control matrix equipment embodiment based on channel multiplexing technique.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the relevant portions of the related inventions are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
The utility model discloses a large-scale video shows accuse matrix equipment based on channel multiplexing technique, including backplate, power module, host system, bellows, quick-witted case, this video shows accuse matrix equipment still includes one or more input module, switching unit, one or more output module
The input module is used for acquiring N paths of videos, copying each path of video in the N paths of videos into N parts, recombining the N parts of videos into N video groups, multiplexing channels and then sending the N video groups to the switching unit;
the switching unit respectively acquires N video groups sent by one or more input modules, and respectively sends each video group to a corresponding output module in one or more output modules based on an acquired first user instruction;
the output module is used for acquiring the video group sent by the switching unit, extracting any path of video in the video group based on the acquired second user instruction and outputting the video.
In order to be more clear, the utility model discloses extensive video display control matrix equipment based on channel multiplexing technique explains, it is right to combine figure 1 below the embodiment of the utility model provides an each module expand detailed description.
The utility model relates to an embodiment's extensive video based on channel multiplexing technique shows accuse matrix equipment, including backplate, power module, host system, bellows, quick-witted case, this video shows accuse matrix equipment still includes one or more input module, switching unit, one or more output module, and each module detailed description is as follows:
the input module is used for acquiring N paths of videos, copying each path of video in the N paths of videos into N parts, recombining the N parts of videos into N video groups, multiplexing channels and then sending the N video groups to the switching unit.
The input module is provided with N first video interface chips and N first backboard high-speed channels. Each first video interface chip is used for acquiring a path of video, and each first backboard high-speed channel is used for outputting a video group after recombination. The input module supports N video inputs and N video group outputs.
Each path of video in the input N paths of videos is copied into N parts, and the videos from different first video interface chips are used as a group to obtain N video groups, wherein each video group comprises N videos from the N first video interface chips.
The utility model discloses a more clearly explain input module to M supports the video input module in N way and explains, in practical application, can place one or more input module in the equipment, for example 2 ways of a card, 4 ways of a card, 8 ways of a card.
The switching unit respectively acquires the N video groups sent by the one or more input modules, and respectively sends each video group to a corresponding output module in the one or more output modules based on the acquired first user instruction.
The switching unit comprises one or more switching cards, wherein the switching cards are provided with H video input channels and H video output channels in total, and the switching cards are used for acquiring M multiplied by N video groups sent by M input modules and respectively sending each group of videos in the M multiplied by N video groups to corresponding output modules in one or more output modules based on the acquired first user instruction.
The output module is provided with C second backboard high-speed channels and C second video interface chips. Each second backboard high-speed channel acquires one video group sent by the switching card group, and each second video interface chip outputs any path of acquired video.
The utility model discloses a more clearly explain output module to Q supports the video output module in C way and explains, in practical application, can place one or more output module in the equipment, for example 2 ways of a card, 4 ways of a card, 8 ways of a card.
The switching unit is also provided with a first micro control unit for acquiring a first user instruction sent by the main control module and matching the M video output interfaces of the switching unit with the second backboard high-speed channels of the C output modules based on the first user instruction.
The output module is also provided with a second micro control unit which is used for acquiring a second user instruction sent by the main control module and respectively extracting any one path of video in one video group of each second backboard high-speed channel of each output module based on the second user instruction.
Because the input data switched by each switching unit contains all input video information, each output module can acquire N paths of arbitrary input videos from N back panel channels, therefore, the input from an M multiplied by N path to an Q multiplied by C path of the whole device is completely unobstructed, the requirement of the video display control device is met, the expansion of the switching scale from H path input, H path output to (M multiplied by N) path input and (Q multiplied by C) path output is realized, the number of ports of the traditional device is enlarged, the video switching is not limited by the number of the ports of the device, and the large-scale multi-path video interconnection switching can be realized.
As shown in fig. 2, a frame diagram of 320-channel video switching equipment according to an embodiment of the large-scale video display and control matrix equipment based on the channel multiplexing technology of the present invention includes 160 input modules, 2 switching cards, and 160 output modules; each input module supports 2-channel video input and 2-channel high-speed backboard output, each switching card supports the video switching function of 160-channel video input and 160-channel video output, the switching unit supports the video switching function of 320-channel video input and 320-channel video output, and each output module supports 2-channel backboard high-speed input and 2-channel video output.
First, the input video of the input module 1 is recorded as 11, 12, the input video of the input module 2 is recorded as 21, 22, … …, and the input video of the input module 160 is recorded as 1601, 1602, and the video of each input module is copied and regrouped to obtain 160 × 2 sets of videos, each set of videos respectively including (11, 12), (11, 12) (21, 22), … …, (1601, 1602).
And then, after channel matching is carried out through the two 160-160 switching cards according to a first user instruction, each group of videos is sent to the high-speed input channel of the corresponding output module. In this embodiment, channel 1 of the output module 1 obtains video groups (11, 12), and channel 2 obtains video groups (801, 802); channel 1 of the output module 2 obtains video groups (801, 802), and channel 2 obtains video groups (11, 12); channel 1 of the output module 160 obtains video groups (41, 42), and channel 2 obtains video groups (1201, 1202); … …, the video groups obtained by the other output modules are not described in detail.
Finally, video extraction is carried out according to a second user instruction, and the two channels of the output module 1 respectively display the video 11 and the video 802; two channels of the output module 2 respectively display a video 801 and a video 12; two channels of the output module 160 respectively display the video 42 and the video 1201; … …, the videos output by the other output modules are not described in detail.
As shown in fig. 3, for the utility model discloses a 2 way input module frame sketch of an embodiment of extensive video display accuse matrix equipment based on channel multiplexing technique, mainly include input video interface chip and FPGA, the video interface chip is responsible for inserting various different video interface formats (such as HDMI, DVI, VGA, SDI, DP etc.), insert FPGA after turning into unified inboard video interface (RGB, BT1120, LVDS etc.), FPGA passes through the channel multiplexing technique to all videos, merge into a transmission channel, in backplate delivery side, duplicate the passageway, send 2 backplate passageways. This embodiment adopts FPGA to carry out video processing, can also adopt other chips such as DSP, ASIC chip etc. in other embodiments, the utility model discloses no longer detailed description one by one here.
As shown in fig. 4, for the utility model discloses 160-channel video switching card frame schematic diagram of an embodiment of large-scale video display control matrix equipment based on channel multiplexing technology, including a switching chip supporting 160-channel video input and 160-channel video output and a first microprocessing unit (MCU) configuring the chip, MCU is responsible for forwarding the switching instruction of host module, and configures the switching chip. The switching chip switches the designated multiplexed input video channel to the designated output channel according to the configuration. This embodiment adopts MCU to carry out instruction forwarding, chip configuration, can also adopt the chip of other similar functions in other embodiments, the utility model discloses no longer detailed description one by one here.
As shown in fig. 5, for the utility model discloses 2 way output module frame schematic diagrams of an embodiment of extensive video display control matrix equipment based on channel multiplexing technique mainly include second microprocessing unit (MCU), output video interface chip and FPGA. And the MCU receives an output channel configuration instruction from the main control module, converts the configuration instruction into corresponding register setting of the FPGA, and then sets the register setting into the FPGA. The FPGA caches the video to a local memory, extracts corresponding video data according to a set value and outputs the video data, and the video data is sent to a video output interface chip through an on-board video interface and is output to external display equipment. This embodiment adopts FPGA to carry out video processing, adopts MCU to carry out instruction receipt, conversion and video output interface configuration, can also adopt the chip of other similar functions in other embodiments, the utility model discloses no longer detail one by one here.
It should be noted that, the large-scale video display and control matrix device based on the channel multiplexing technology provided in the above embodiment is only illustrated by the division of the above functional modules, and in practical applications, the above functions can be allocated to different functional modules according to needs, that is, the modules in the embodiment of the present invention are decomposed or combined again, for example, the modules in the above embodiment may be combined into one module, or further split into multiple sub-modules, so as to complete all or part of the above described functions. The names of the modules involved in the embodiments of the present invention are merely for distinguishing the respective modules, and are not to be construed as limitations of the present invention.
The terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing or implying a particular order or sequence.
The terms "comprises," "comprising," or any other similar term are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
So far, the technical solution of the present invention has been described with reference to the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.
Claims (7)
1. A large-scale video display control matrix device based on a channel multiplexing technology comprises a back plate, a power supply module, a main control module, an air box and a case, and is characterized by further comprising one or more input modules, a switching unit and one or more output modules;
the input module is used for acquiring N paths of videos, copying each path of video in the N paths of videos into N parts, recombining the N parts of videos into N video groups, multiplexing channels and then sending the N video groups to the switching unit;
the switching unit respectively acquires N video groups sent by one or more input modules, and respectively sends each video group to a corresponding output module in one or more output modules based on an acquired first user instruction;
the output module is used for acquiring the video group sent by the switching unit, extracting any path of video in the video group based on the acquired second user instruction and outputting the video.
2. The large-scale video display control matrix equipment based on the channel multiplexing technology is characterized in that the input module is provided with N first video interface chips and N first backboard high-speed channels; the first video interface chip is used for acquiring a video; the first backplane high speed channel is for outputting a video set after being recombined.
3. The large-scale video display control matrix device based on the channel multiplexing technology as claimed in claim 1, wherein the switching unit comprises one or more switching cards; the switching unit is provided with H video input channels and H video output channels.
4. The large-scale video display control matrix equipment based on the channel multiplexing technology is characterized in that the output module is provided with C second backboard high-speed channels and C second video interface chips; the second backboard high-speed channel is used for acquiring a video group; the second video interface chip is used for outputting any path of video extracted based on a second user instruction.
5. The large-scale video display and control matrix device based on the channel multiplexing technology is characterized in that the switching unit is further provided with a first micro control unit;
the first micro control unit is used for acquiring a first user instruction sent by a main control module and matching the M video output interfaces of the switching unit with the second backboard high-speed channels of the C output modules based on the first user instruction.
6. The large-scale video display and control matrix device based on the channel multiplexing technology is characterized in that the output module is further provided with a second micro control unit;
the second micro control unit is used for acquiring a second user instruction sent by the main control module and extracting any one path of video in a video group of each second backboard high-speed channel of each output module based on the second user instruction.
7. The large-scale video display and control matrix device based on the channel multiplexing technology as claimed in claim 1, wherein one of the FPGA, DSP and ASIC chips is used as a backplane high-speed channel for video transmission.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111741234A (en) * | 2020-06-29 | 2020-10-02 | 中国北方车辆研究所 | Video channel allocation and coupling sharing system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111741234A (en) * | 2020-06-29 | 2020-10-02 | 中国北方车辆研究所 | Video channel allocation and coupling sharing system |
| CN111741234B (en) * | 2020-06-29 | 2022-05-17 | 中国北方车辆研究所 | Video channel allocation and coupling sharing system |
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