CN107529024A - Multifunctional image video switch boards - Google Patents
Multifunctional image video switch boards Download PDFInfo
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- CN107529024A CN107529024A CN201710699718.8A CN201710699718A CN107529024A CN 107529024 A CN107529024 A CN 107529024A CN 201710699718 A CN201710699718 A CN 201710699718A CN 107529024 A CN107529024 A CN 107529024A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
- H04L12/40032—Details regarding a bus interface enhancer
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
- H04N5/775—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Controls And Circuits For Display Device (AREA)
- Studio Circuits (AREA)
Abstract
The present invention discloses a kind of multifunctional image video switch boards, including three DVI distribute modules, a DVI handover module, a panorama mosaic module, a video frequency switching module and a CAN interface module composition.DVI distribute modules realize will all the way DVI video distributions to multiple-channel output；DVI handover modules and video frequency switching module are realized to be selected to export all the way from multi-channel video；By the road video input signals synthesis of front, rear, left and right four of all-round Situation Awareness System, panoramic video exports panorama mosaic module all the way；CAN interface module realization is docked with higher level's CAN interface, transmits CAN command signals.The present invention integrates the functions such as video switching, video distribution and Video Composition, uses electromagnetic isolation technology between each functional module, does not interfere with each other, output video is clearly noiseless, and switching control order is realized by CAN order, quick and easy；DVI video output terminals are provided with special interface driving circuit, versatile, disclosure satisfy that the compatible needs of display of the transmission needs and particular vendors of making cable in different application by oneself.
Description
Technical field
The present invention relates to a kind of Multifunctional video frequency switching and distribution board, reconnaissance system or video monitoring system can be applied to
System.
Background technology
Image and video are the important carriers of visual information, about occupy people obtain informational capacity 70%.Video is people
Class vision obtains one of definite, directly perceived, specific, lively, true and efficient method of information.In electro optical reconnaissance system, with
Synthesis and the development of whole vehicle functions, vehicular photoelectric reconnaissance system is to Video processing and the continuous diversification of requirement of display.Have
When one system need to use the display system of several video formats composition, and the vision signal of various forms can be regarded
Frequency switches.Meanwhile uniformity, intuitive and real-time image information are provided for driver, make driver without spending in the brain
Time-consuming to become extremely important to external environment progress brains synthesis, this is just needed one video of Video Composition in each orientation
(panoramic video) is shown.
For example, China's special vehicle is provided with commander's seat, scouts multiple seats such as seat and driver's seat, the picture spied out needs
Each observation seat is delivered to simultaneously；And for each observation seat, need display simultaneously to include high definition again sometimes
Multiple forms such as CCD, thermal imagery, operation and control interface and auxiliary driving, that is, realize picture-in-picture function；The multi-pass video that system receives
The multi-channel video of sensory perceptual system needs to synthesize panoramic video all the way and judges to provide conveniently for commander.Therefore, to realize more seats
More forms and panorama mosaic, the design studies of the multifunctional image video switch boards based on vehicular photoelectric reconnaissance system meet the tendency of and
It is raw.
At present, collection video switching of the China based on vehicular photoelectric reconnaissance system, video distribution and panorama mosaic is multi-functional
The not disclosed report of technology contents of image/video switch boards.
The content of the invention
To solve the problems, such as that prior art is present, the present invention proposes a kind of multifunctional image video switch boards, and this is multi-functional
Image/video switch boards can implement function such as：
(1) function that multi-channel video is switched to video output terminals all the way can be realized；
(2) function by video distribution all the way to multi-channel video output end can be realized；
(3) function that video all the way is synthesized to multi-channel video can be realized.
The technical scheme is that：
A kind of multifunctional image video switch boards, it is characterised in that：Including FPGA interface module and the main algorithms of FPGA
Module；
The FPGA interface module include PAL input interface modules, PAL output interface modules, DVI input interface modules,
DVI output interface modules, CAN interface module；The PAL input interface modules include 6 PAL video input interfaces, the PAL
Output interface module includes 5 PAL video output interfaces, and the DVI input interface modules connect including 3 DVI-D video inputs
Mouthful, the DVI output interface modules include 6 DVI-D video output interfaces；
The main algoritic modules of FPGA include PAL video data processing modules and DVI video data processing modules；It is described
PAL video data processing modules include PAL video panoramas synthesis module, PAL video frequency switching modules；At the DVI video datas
Managing module includes three DVI distribute modules, a DVI handover module；
The front, rear, left and right four-way CCD camera of outside multi-pass video sensory perceptual system by 4 PAL video input interfaces to
PAL video data processing modules input four road PAL vision signals, and complete by PAL videos in PAL video data processing modules
Scape synthesis module obtains PAL panorama mosaic videos；The panorama of outside multi-pass video sensory perceptual system overlooks vision signal and passes through 1
PAL video input interfaces input PAL video data processing modules, and the thermal imagery vision signal of external control system is regarded by 1 PAL
Frequency input interface inputs PAL video data processing modules；
Four road PAL vision signals of outside multi-pass video sensory perceptual system front, rear, left and right four-way CCD camera, all the way PAL
Panorama mosaic vision signal, the panorama of outside multi-pass video sensory perceptual system overlook vision signal and the heat of external control system
As vision signal amounts to seven road PAL vision signals in PAL video data processing modules, carried out by PAL video frequency switching modules
Switching, switching command is from the CAN signal received by CAN interface module；Wherein video points five all the way is selected after switching
Road is exported by 5 PAL video output interfaces and shown to outside five display terminals；
The DVI of the high definition all the way videos of external control system input DVI video datas by 1 DVI-D video input interface
Processing module, and three road videos are divided into respectively by 3 by a DVI distribute module in DVI video data processing modules
DVI-D video output interfaces export to be shown to outside three display terminals；
Accuse that the videos of DVI all the way of computer are inputted at DVI video datas by 1 DVI-D video input interface in outside
Module is managed, and two-path video is divided into by a DVI distribute module in DVI video data processing modules, wherein passing through 1 all the way
Individual DVI-D video output interfaces export shows that another way is input to DVI handover modules to an outside display terminal；
The videos of DVI all the way of outside manipulation computer are inputted at DVI video datas by 1 DVI-D video input interface
Module is managed, and two-path video is divided into by a DVI distribute module in DVI video data processing modules, wherein passing through 1 all the way
Individual DVI-D video output interfaces export shows that another way is input to DVI handover modules to an outside display terminal；
The DVI handover modules by outside to being accused 1 road DVI videos that computer obtains and being obtained by outside manipulation computer
To 1 road DVI videos switch over after select wherein to export by 1 DVI-D video output interface all the way it is aobvious to outside one
Show that terminal is shown, switching command is from the CAN signal received by CAN interface module.
Further preferred scheme, a kind of multifunctional image video switch boards, it is characterised in that：The main calculations of FPGA
Method module by fpga chip and its configuration circuit, peripheral power supply module, clock module, reset circuit, extend out DDR3 data storages
Circuit hardware is realized.
Further preferred scheme, a kind of multifunctional image video switch boards, it is characterised in that：The PAL inputs
Total 6 road PAL video images outside interface module collection, according to outside input pixel clock, gather row useful signal, field has
Imitate signal, and effective image pixel data, image frame data corresponding to formation.
Further preferred scheme, a kind of multifunctional image video switch boards, it is characterised in that：The DVI inputs
3 road DVI digital video images outside interface module collection, according to outside input pixel clock, row useful signal is gathered, frame has
Imitate signal, and effective image pixel data, image frame data corresponding to formation.
Beneficial effect
Beneficial effects of the present invention are embodied in the following aspects：
The 1st, multi-channel video can be switched to video output terminals all the way；Will all the way video distribution to multi-channel video output end；
Video all the way can be synthesized to multi-channel video to export.
2nd, integrate video switching, video distribution and Video Composition etc. used between function, each functional module electromagnetism every
From technology, it does not interfere with each other, output video is clearly noiseless, and switching control order is completed by CAN order；
3rd, DVI video output terminals are provided with special interface driving circuit, disclosure satisfy that the biography for making cable in different application by oneself
Defeated needs and the compatible needs of the display of particular vendors.
Brief description of the drawings
Fig. 1 is digital processing plate the general frame of the present invention.
Fig. 2 is primary module composition frame chart and signal flow diagram of the present invention.
Fig. 3 is functional level DFD of the present invention.
Fig. 4 is power source design figure of the present invention.
Fig. 5 is clock scheme figure of the present invention.
Fig. 6 is video switch boards principle of the present invention and composition frame chart.
Fig. 7 is panoramic video form of the present invention.
Embodiment
It is an object of the invention to provide a kind of multifunctional image video switch boards, and there is (1) can realize and cut multi-channel video
The function of video output terminals all the way is changed to, (2) can realize the function to multi-channel video output end by video distribution all the way, (3) energy
It is enough to realize the function that video all the way is synthesized to multi-channel video, wait three kinds of functions.Main video format is divided into PAL format and DVI
Form.
As shown in figure 1, the multifunctional image video switch boards, are carried out using the hardware structure of FPGA+DDR3+ interface chips
Design, complete, integration a digital display circuit hardware platform is collectively forming plus necessary driver by hardware module,
It is supplied to client to use.Mainly include FPGA interface module and the main algoritic modules of FPGA.
As shown in Fig. 2 the FPGA interface module includes PAL input interface modules, PAL output interface modules, DVI inputs
Interface module, DVI output interface modules, CAN interface module；The PAL input interface modules connect including 6 PAL video inputs
Mouthful, the PAL output interface modules include 5 PAL video output interfaces, and the DVI input interface modules include 3 DVI-D
Video input interface, the DVI output interface modules include 6 DVI-D video output interfaces.
The main algoritic modules of FPGA include PAL video data processing modules and DVI video data processing modules；It is described
PAL video data processing modules include PAL video panoramas synthesis module, PAL video frequency switching modules；At the DVI video datas
Managing module includes three DVI distribute modules, a DVI handover module.
The front, rear, left and right four-way CCD camera of outside multi-pass video sensory perceptual system by 4 PAL video input interfaces to
PAL video data processing modules input four road PAL vision signals, and complete by PAL videos in PAL video data processing modules
Scape synthesis module obtains PAL panorama mosaic videos；The panorama of outside multi-pass video sensory perceptual system overlooks vision signal and passes through 1
PAL video input interfaces input PAL video data processing modules, and the thermal imagery vision signal of external control system is regarded by 1 PAL
Frequency input interface inputs PAL video data processing modules.
Four road PAL vision signals of outside multi-pass video sensory perceptual system front, rear, left and right four-way CCD camera, all the way PAL
Panorama mosaic vision signal, the panorama of outside multi-pass video sensory perceptual system overlook vision signal and the heat of external control system
As vision signal amounts to seven road PAL vision signals in PAL video data processing modules, carried out by PAL video frequency switching modules
Switching, switching command is from the CAN signal received by CAN interface module；Wherein video points five all the way is selected after switching
Road is exported (display terminal 1, display terminal 2, display 1, aobvious to outside five display terminals by 5 PAL video output interfaces
Show device 2, display 3) shown.
The DVI of the high definition all the way videos of external control system input DVI video datas by 1 DVI-D video input interface
Processing module, and three road videos are divided into respectively by 3 by a DVI distribute module in DVI video data processing modules
DVI-D video output interfaces export to be shown (being respectively display 1, display 2, display 3) to outside three display terminals.
Accuse that the videos of DVI all the way of computer are inputted at DVI video datas by 1 DVI-D video input interface in outside
Module is managed, and two-path video is divided into by a DVI distribute module in DVI video data processing modules, wherein passing through 1 all the way
Individual DVI-D video output interfaces export to be shown (display 1) to an outside display terminal, and another way is input to DVI switching moulds
Block.
The videos of DVI all the way of outside manipulation computer are inputted at DVI video datas by 1 DVI-D video input interface
Module is managed, and two-path video is divided into by a DVI distribute module in DVI video data processing modules, wherein passing through 1 all the way
Individual DVI-D video output interfaces export to be shown (display 2) to an outside display terminal, and another way is input to DVI switching moulds
Block.
The DVI handover modules by outside to being accused 1 road DVI videos that computer obtains and being obtained by outside manipulation computer
To 1 road DVI videos switch over after select wherein to export by 1 DVI-D video output interface all the way it is aobvious to outside one
Show that terminal is shown (display 3), switching command is from the CAN signal received by CAN interface module.
The main algorithms of FPGA realize module by fpga chip and its configuration circuit, peripheral power supply module, clock module, reset electricity
Road, the hardware such as DDR3 data storage circuitries composition is extended out, logical algorithm is provided for whole board.Will according to corresponding configuration management
Ask, a discrete amount control circuit is designed on FPGA, switching value and control corresponding to some discrete interface outputs are deposited
The configuration of device.
The work that FPGA is mainly completed in systems has：
1), realize that PAL video input interfaces switch to PAL video output interfaces interchannel；
2), realize that DVI video input interfaces switch to DVI video output interfaces interchannel；
3), other discrete magnitude logic controls.
For fpga chip using SEL XC7K325T-2FFG900I is matched, the chip is the fpga logic chip of XILINX companies,
Belong to 7 series.1.0V core voltages, each pin electric current are up to 24mA, compatible 3.3V, 2.5V, 1.8V, 1.5V, 1.35V,
1.2V I/O standard.With 326080LE, 34Mb RAM, 1 PCIe, 10 BANKS, 16 GTXs, 500 I/O, it is encapsulated as
FG900.Supply voltage：Kernel 1.0V, IO voltage meets 3.3V to 1.2V standards.
It is functional that each modular circuit in FPGA peripheries coordinates FPGA main process tasks chip to complete institute：
1) FPGA configures chip
FPGA configuration chips use SPI mode (models：M25P64-VMF6TP), when upper electric by FPGA configuration data from
Put in chip and read, be automatically loaded into FPGA, then FPGA can just bring into operation, and be peripheral circuit needed for FPGA operations.
2) power module
3) clock module
4) reset circuit
In order that circuit reliably works, reset circuit is of crucial importance, and this plate devises electrification reset and uses Special reset
Chip MAX811 and FPGA, which coordinates, to be realized, the global each chip reset of completion, which is conciliate, to be resetted.MAX811 chip internals take and replied by cable certainly
Position time control, the reset signal carry out electrification reset to FPGA, are loaded using FPGA and complete DONE signals triggering MAX811 cores
Piece completes reset signal output, and its minimum 140ms resetting time can ensure reliably to reset whole system.
5) DDR3 extends out data storage circuitry
The circuit is made up of DDR3 sram chips, is mainly used to data buffer storage, assistance system completes the work(such as multi-channel control
Energy.
The plug-in 22 × 128Mb of FPGA × 16bit capacity DDR3 are used according to functional requirement, according to the actual requirements, we
Using MT41J128M16 DDR3 chips, technical protocol requirement is fully met.The chip monolithic is 128Mb × 16bit capacity, is hung
It is systems with data caching on FPGA, assists system to complete the functions such as multi-channel control.
DVI input interface modules are made up of receiving interface chip, complete the processing of DVI video receptions.Receive outside DVI data
Signal is input to FPGA progress Video processings and interchannel switching output by the way that chip TFP401 is gone here and there and converted in plate.
DVI input interface modules are mainly used in 3 road DVI digital video images outside collection, according to outside input pixel
Clock, collection row useful signal, frame useful signal, and effective image pixel data, image frame data corresponding to formation, with
Level is handled after an action of the bowels, and the image resolution ratio for supporting outside is 1920x1080, frame frequency 60Hz.
DVI output interface modules are made up of output interface chip, complete the driving display of DVI video frequency outputs；Pass through FPGA pairs
Video data conversion RGB888 is sent into TFP410 and drives 1 road DVI interface to show.
DVI Video Output Modules are used for the output control of video, and the realization of output timing, the resolution ratio externally exported
For 1920 × 1080, frame frequency 60Hz.
PAL input interface modules are made up of receiving interface chip, complete the processing of PAL video receptions.This module is completed to PAL
The collection of thermal imagery video data is simultaneously converted into BT656 formatted data FPGA processing, and the main single-ended feeding TVP5151 of PAL enter
Row AD conversion is BT656 data flows.
PAL input interface modules are mainly used in total 6 road PAL video images outside collection, according to outside input pixel
Clock, collection row useful signal, field useful signal, and effective image pixel data, image frame data corresponding to formation, with
Level is handled after an action of the bowels, and the image resolution ratio for supporting outside is 720x576, frame frequency 25Hz.
PAL output interface modules are made up of output interface chip, complete the driving display of PAL video frequency outputs；The work(of this module
Collection to PAL thermal image video datas can be completed and be converted into 8bit video data streams and export to give the processing of AVD7179 chips, completed
The switching output of PAL single ended channels.
PAL Video Output Modules are used for the output control of video, and the realization of output timing, the resolution ratio externally exported
For 720 × 576, frame frequency 25Hz.
CAN interface module receives the order from industrial computer by CAN interface chip MCP2515IST, is converted into
SPI interface docks with FPGA, realizes the parsing of order and to the corresponding control operation of video.
The control command that sends over of CAN interface module parsing other monomers equipment, and the control command is sent to pair
The output module answered is handled, and compares status inquiry, version querying, switching control etc..
Each road picture frame that PAL video data processing modules mainly collect prime carries out de interlacing processing, image
Flake is corrected, then the image after correction is sent into next stage, is handled.
DVI video data processing modules mainly realize the data distribution processing of DVI data, to support multichannel DVI numerals to regard
The output of frequency
In fig. 2, the idiographic flow of data processing is denoted：
->①->②->③:1. data carry out framing processing by PAL input interface modules, 2. PAL video datas are handled
Module will receive Framed Data, be handled, including de interlacing processing, flake correction process, and data are cut and stretch processing,
Data splicing.3. the data after processing, output is allocated according to output timing requirement by PAL output interface modules.
<->④->⑤：4. receiving order from the other monomers equipment of system, and parsed, handled, if the order category
Completed in what this module can be completed in this module, such as version querying, state self-test etc., according to command interface to initiation
The single devices of order are fed back.5. other are ordered, such as output switching order, then the progress of PAL video processing modules is sent to
Processing.
->⑥->⑦->⑧：6. data carry out framing processing by DVI input interface modules, 2. DVI video datas are handled
Module will receive Framed Data, carry out caching process, while carry out data distribution, frame smoothing processing.8. the data after processing,
Output is allocated according to output timing requirement by DVI output modules.
<->④->⑨：4. receiving order from the other monomers equipment of system, and parsed, handled, if the order category
Completed in what this module can be completed in this module, such as version querying, state self-test etc., according to command interface to initiation
The single devices of order are fed back.9. other are ordered, such as output switching order, then the progress of DVI video processing modules is sent to
Processing.
<->⑨<->(11)：9. directly and Debugging equipment interacts (such as PC), some customized lives are realized
Order, the diagnosis for the stage of debugging.(11) partial order and CAN interface module coupling, it is therefore an objective to simulate CAN orders and realize
Control debugging function.
As shown in figure 3, provide its data flow according to 3 major functions of Multifunctional video frequency switching plate.
(a) the thermal imagery video come from control system, the panoramic video synthesized all the way and five tunnels come from multi-pass video
The video (including input video of four tunnels from camera all around and panorama overlooks video all the way) of sensory perceptual system, totally seven tunnel
Video is switched over by video frequency switching module according to the switching command of CAN.Video frequency switching module is by fpga chip and its matches somebody with somebody
Circuits are formed and realized, the selection of video after switching be wherein sent to all the way five display terminals shown (display terminal 1,
Display terminal 2, display 1, display 2, display 3).
(b) DVI of the high definition all the way videos from control system are divided into three road videos by DVI distribute modules and are sent to three respectively
Display is shown (being respectively display 1, display 2, display 3).From the videos of DVI all the way for accusing computer and come
Two DVI distribute modules are respectively enterd from the videos of DVI all the way of manipulation computer, are each divided into two-path video.Calculated from accusing
Video all the way in the two-way video that machine distributes is routed directly to display 1 and shown, is distributed from manipulation computer double
Video all the way in the video of road is routed directly to display 2 and shown, the other route DVI videos in this two groups of two-way videos
Select wherein to be sent to display 3 all the way after handover module switching and shown, switching command comes from CAN.DVI distribute modules
It is made up of fpga chip and its configuration circuit, Framed Data will be received and carry out caching process, while carry out data distribution, in frame
After smoothing processing output is allocated according to output timing.
(c) panorama mosaic module receives the four road videos from multi-pass video sensory perceptual system, i.e., from all around four
The SD video of road camera input, respectively reduces 1/2 according to horizontal, vertical direction, is changed into 320 × 288 from 720 × 576, write-in
DDR3 is cached；Via Video Composition module, i.e., by 27M clocks inside FPGA, SD output timing is produced as reading to drive, will
Video after four tunnels reduce is read from DDR3, is built into 720 × 576 new all the way panoramic video pictures, is finally sent to display
Device is shown.
As shown in figure 4, it is power module implementation.System provides power supply DC 5V (± 5%), total work by connector
Consume and be not more than 15W, the working power on plate needed for all chips all needs to convert from 5V.FPGA core voltage and IO electricity
Pressure, totally four kinds are respectively：1.0V, 1.5V, 1.8V and 3.3V, wherein TVP5151 core voltages and IO voltages, totally 2 kinds are respectively：
1.8V, 3.3V, in addition to requiring 1.8V and first going up electricity, other supreme electric sequence requirements.
As shown in figure 5, it is the implementation of clock module.Wherein, 14.7456MHz individually uses for FPGA, mainly goes here and there
Mouth processing module；27MHz crosses 2 clock driver CY2305 and goes out 8 road clocks, is used respectively to FPGA and TVP5151；During 20M
Clock individually supplies CAN interface chip operation；27MHz crosses 2 clock driver CY2305 and goes out 8 road clocks, respectively to FPGA and
TVP5151 is used；25MHz individually uses for clock synthesizer, exports 2 tunnel difference 200M clocks；200MHz individually makes for FPGA
With DDR3 interfaces reason work clock.
As shown in fig. 6, including three DVI distribute modules, a DVI handover module, (PAL is regarded a panorama mosaic module
Frequently), a video frequency switching module (PAL videos) and a CAN interface module composition.Handover module selects one from multi-channel video
Road exports；Distribute module will be divided into multi-channel video output by video all the way；Panorama mosaic module synthesizes multichannel input video all the way
Panoramic video exports；CAN interface module is realized transmits CAN command signals with docking for higher level's CAN interface.Four road video input letters
Number synthesis panoramic video, panoramic video form are as shown in Figure 7 all the way.
Claims (4)
- A kind of 1. multifunctional image video switch boards, it is characterised in that：Including FPGA interface module and the main algoritic modules of FPGA；It is defeated that the FPGA interface module includes PAL input interface modules, PAL output interface modules, DVI input interface modules, DVI Outgoing interface module, CAN interface module；The PAL input interface modules include 6 PAL video input interfaces, the PAL outputs Interface module includes 5 PAL video output interfaces, and the DVI input interface modules include 3 DVI-D video input interfaces, institute Stating DVI output interface modules includes 6 DVI-D video output interfaces；The main algoritic modules of FPGA include PAL video data processing modules and DVI video data processing modules；The PAL is regarded Frequency data processing module includes PAL video panoramas synthesis module, PAL video frequency switching modules；The DVI video data processing modules Including three DVI distribute modules, a DVI handover module；The front, rear, left and right four-way CCD camera of outside multi-pass video sensory perceptual system is by 4 PAL video input interfaces to PAL Video data processing module inputs four road PAL vision signals, and passes through PAL video panoramas in PAL video data processing modules Synthesis module obtains PAL panorama mosaic videos；The panorama of outside multi-pass video sensory perceptual system overlooks vision signal and passes through 1 PAL video input interfaces input PAL video data processing modules, and the thermal imagery vision signal of external control system is regarded by 1 PAL Frequency input interface inputs PAL video data processing modules；Four road PAL vision signals of outside multi-pass video sensory perceptual system front, rear, left and right four-way CCD camera, all the way PAL panoramas Synthetic video signal, the panorama of outside multi-pass video sensory perceptual system overlook vision signal and the thermal imagery of external control system regards Frequency signal amounts to seven road PAL vision signals in PAL video data processing modules, is switched over by PAL video frequency switching modules, Switching command is from the CAN signal received by CAN interface module；Select wherein that video point five tunnels pass through all the way after switching 5 PAL video output interfaces export to be shown to outside five display terminals；The DVI of the high definition all the way videos of external control system input DVI video datas by 1 DVI-D video input interface and handled Module, and three road videos are divided into respectively by 3 DVI-D by a DVI distribute module in DVI video data processing modules Video output interface exports to be shown to outside three display terminals；Accuse that the videos of DVI all the way of computer input DVI video datas by 1 DVI-D video input interface and handle mould in outside Block, and two-path video is divided into by a DVI distribute module in DVI video data processing modules, wherein passing through 1 all the way DVI-D video output interfaces export shows that another way is input to DVI handover modules to an outside display terminal；The videos of DVI all the way of outside manipulation computer input DVI video datas by 1 DVI-D video input interface and handle mould Block, and two-path video is divided into by a DVI distribute module in DVI video data processing modules, wherein passing through 1 all the way DVI-D video output interfaces export shows that another way is input to DVI handover modules to an outside display terminal；The DVI handover modules by outside to being accused 1 road DVI videos that computer obtains and being obtained by outside manipulation computer 1 road DVI videos select wherein to export to an outside display eventually by 1 DVI-D video output interface all the way after switching over End display, switching command is from the CAN signal received by CAN interface module.
- A kind of 2. multifunctional image video switch boards according to claim 1, it is characterised in that：The main algoritic modules of FPGA By fpga chip and its configuration circuit, peripheral power supply module, clock module, reset circuit, to extend out DDR3 data storage circuitries hard Part is realized.
- A kind of 3. multifunctional image video switch boards according to claim 1, it is characterised in that：The PAL input interfaces mould Total 6 road PAL video images outside block collection, according to outside input pixel clock, gather row useful signal, field is effectively believed Number, and effective image pixel data, image frame data corresponding to formation.
- A kind of 4. multifunctional image video switch boards according to claim 1, it is characterised in that：The DVI input interfaces mould 3 road DVI digital video images outside block collection, according to outside input pixel clock, row useful signal is gathered, frame is effectively believed Number, and effective image pixel data, image frame data corresponding to formation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710699718.8A CN107529024A (en) | 2017-08-16 | 2017-08-16 | Multifunctional image video switch boards |
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