CN107509046A - Multichannel DVI integrated video distributing equipments - Google Patents
Multichannel DVI integrated video distributing equipments Download PDFInfo
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- CN107509046A CN107509046A CN201710564071.8A CN201710564071A CN107509046A CN 107509046 A CN107509046 A CN 107509046A CN 201710564071 A CN201710564071 A CN 201710564071A CN 107509046 A CN107509046 A CN 107509046A
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- 238000012546 transfer Methods 0.000 claims abstract description 8
- 238000012545 processing Methods 0.000 claims description 22
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000001629 suppression Effects 0.000 claims description 6
- 230000001052 transient effect Effects 0.000 claims description 6
- 230000008054 signal transmission Effects 0.000 claims description 3
- 238000005315 distribution function Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012857 repacking Methods 0.000 description 3
- 101100326371 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) bst-1 gene Proteins 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000002224 dissection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Classifications
-
- 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
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses a kind of multichannel DVI integrated video distributing equipments, including the bus control units of ARINC 429, FPGA overall control modules, DVI interface protection location, well-balanced adjustment unit, DVI selects allocation unit, DVI allocation units, power conversion unit, the DVI interface protection location is 14 independent DVI interface protection modules, the well-balanced adjustment unit is 7 independent well-balanced adjustment modules, the DVI selection allocation units select distribute module for 5 independent DVI, the DVI allocation units are 2 independent DVI distribute modules, the DVI allocation units are 2 independent DVI distribute modules, the power conversion unit is respectively power transfer module, secondary power supply modular converter.The present invention is installed between DPU and airborne indicator, solve the problems, such as that the road onboard flight display video of aircraft 5 needs with 2 being drawn for tunnel HUD vision signal, multichannel DVI video distribution functions are realized, are shown while meeting the same DVI vision signals in rear end and collection.
Description
Technical field
The invention belongs to flight test technical field of measurement and test, and in particular to a kind of multichannel DVI integrated video distributing equipments.
Background technology
In flight test, the collection to airborne combination display device and Airborne HUD display video signal has become
An indispensable part in airborne testing chain.And DVI vision signals can not be extracted directly, it is necessary to install DVI videos additional
Signal distributor is allocated processing to vision signal, while meets the aobvious of airborne combination display device/Airborne HUD display
Show the collection demand with Airborne Video System collecting device.
Some shortcomings be present in current DVI vision signals distributing equipment：DVI video signal transmissions are influenceed by cable length,
Equilibrium is not easy to adjust；Single device only supports 1 ~ 3 road DVI vision signals while distributed that large aircraft multichannel DVI vision signals are taken out
Draw and limited to；Installation site is limited, and signal is vulnerable to interference.
With the continuous increase for the demand for showing and gathering while flight test is to multichannel DVI vision signals, realize
The distribution of multichannel DVI vision signals is particularly important.
The content of the invention
It is an object of the invention to provide one kind to meet DVI vision signal long range cable transmissions, and the DVI of Multiple DisPlay is regarded
The multichannel DVI integrated video distributing equipments of the distribution processing of frequency signal.
To solve the problems, such as that prior art is present, the technical scheme is that：A kind of multichannel DVI integrated videos distribution
Equipment, it is characterised in that：Including the bus control units of ARINC 429, FPGA overall controls module, DVI interface protection location, DVI
Well-balanced adjustment unit, DVI selections allocation unit, DVI allocation units, power conversion unit；
The bus control units of ARINC 429 receive the ICD files of DPU transmissions by panel connector；The FPGA is totally controlled
Molding block receives the ICD files that the bus control units of ARINC 429 are sent, and the content of its ICD file is parsed, acquisition pair
Parameter is answered, and is sent to DVI selection distribute modules, the parameter is used for the alternative for controlling two-way DVI vision signals；The mould simultaneously
Root tuber is according to outside DVI video signal transmissions attenuation, by the electricity for controlling the FPGA pins in the case of FEB=0 and FEB=1
Ordinary mail number, control well-balanced adjustment module is sent to, for the equilibrium treatment to DVI vision signals；The DVI selects allocation unit
Control and one-to-two processing is carried out respectively to the two-way DVI vision signals of outside input, obtain four road DVI signals, it is total according to FPGA
The level signal that body control module is sent, equalizer gain value corresponding to selection, control to the first via DVI after one-to-two processing
Vision signal and the second road DVI vision signals carry out alternative output；
The DVI allocation units are used to carry out one-to-two processing to the vision signals of DVI all the way of input, obtain two-way DVI videos
Signal, wherein sending Airborne HUD display back to all the way, another way gives airborne video capture device；
The power conversion unit is used to protect list to the bus control units of ARINC 429, FPGA overall controls module, DVI interface
Member, DVI well-balanced adjustments unit, DVI selection allocation unit, the power supply of DVI allocation units.
Described DVI interface protection module carries out interface protection to the input/output interface on Video processing board, balanced
Adjustment module per DVI vision signals all the way to carrying out equilibrium treatment.
The DVI interface protection location is 14 independent DVI interface protection modules；
The DVI well-balanced adjustments unit is 7 independent well-balanced adjustment modules；
The DVI selection allocation units select distribute module for 5 independent DVI, and the input of each DVI selections distribute module is
The DVI vision signals of 2 tunnel independences.
The DVI allocation units are 2 independent DVI distribute modules；
The power conversion unit is respectively power transfer module, secondary power supply modular converter；
Described power module receives the 28V power supplys on aircraft by connector, and by overcurrent protection, reverse protection, mistake
Pressure protection, transient state suppression circuit, then by EMI noise wave filter, 5V electricity is then converted to using DC-DC power source conversion module
Pressure, is finally transmitted after differential mode, common mode rejection circuit denoising to secondary power supply modular converter；
The secondary power supply module receives the 5V voltages of power transfer module output, first passes around overcurrent protection, reverse protection, mistake
Pressure protection, transient state suppression circuit, then by EMI noise wave filter, then using DC-DC power source conversion module be converted to 3.3V,
2.5V, 1.8V voltage, finally export power supply to the device after differential mode, common mode rejection circuit denoising.
Described well-balanced adjustment module selects model DS16EV5110 balanced device chip.
Described DVI selections distribute module selects SN65LVCP65114 chips.
Compared with prior art, advantages of the present invention is as follows：
Present invention employs the mode that board stacks, and facilitates signal input and output, reduces the volume of equipment DVI distributing equipments.Adopt
14 distribution chips and 7 balancing chips are configured with FPGA, huge chip configuration needs is solved the problems, such as, realizes multichannel DVI
The integrated design of video distribution；
Present invention employs DVI well-balanced adjustment technologies, add well-balanced adjustment device, matching DPU, Airborne Video System collector end
DVI preemphasis, balanced grade, eliminate the long cable transmission of high-frequency digital signal bring impedance operator, matching properties, decay, group
Time delay etc. influences, and meets the long range transmission of DVI vision signals on machine；
ARINC 429 bus video switching control technologies of the invention based on FPGA configure 14 road ARINC 429 using FPGA and believed
Number switching control chip, realize and switching signal is read according to the bus protocols of ARINC 429, complete DPU1, DPU2 video signal source
Switching control；
The present invention can realize two kinds of functions：One kind is that the incoming video signal for realizing 1 ~ 5 DVI selection distribute module passes through one
The display and collection divided after two and alternative processing, one kind is that the incoming video signal of 1 ~ 2 DVI distribute module passes through one-to-two
Directly displaying after processing and gather.Two kinds of functions can be used independently.
Multichannel DVI video distribution equipment volumes of the present invention are small, save repacking space, and repacking is convenient, shortens the repacking duration.
Brief description of the drawings
Fig. 1 provides a kind of theory diagram of multichannel DVI integrated video distributing equipments for the embodiment of the present invention；
Fig. 2 provides a kind of realization of the DVI well-balanced adjustment modules of multichannel DVI integrated video distributing equipments for the embodiment of the present invention
Theory diagram；
Fig. 3 provides a kind of realization of the DVI selection distribute modules of multichannel DVI integrated video distributing equipments for the embodiment of the present invention
Theory diagram；
Fig. 4 positions embodiment of the present invention provides a kind of realization principle figure of the power module of multichannel DVI integrated video distributing equipments.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Participate in Fig. 1：A kind of multichannel DVI integrated video distributing equipments of offer of the embodiment of the present invention, including ARINC 429 are total
Lane controller 1, FPGA overall controls module 2, DVI interface protection location 3, well-balanced adjustment unit 4, DVI selection allocation unit 5,
DVI allocation units 6, power conversion unit 7, the DVI interface protection location 3 are 14 independent DVI interface protection modules 8,
The well-balanced adjustment unit 4 is 7 independent well-balanced adjustment modules 9, and the DVI selections allocation unit 5 is 5 independent DVI
Distribute module 10 is selected, the DVI allocation units 6 are 2 independent DVI distribute modules 11, and the power conversion unit 7 is distinguished
For power transfer module 12, secondary power supply modular converter 13.
The ICD files that the bus control units 1 of ARINC 429 are sent by DPU on panel connector receiver, and pass through
The buses of ARINC 429 are sent to FPGA overall controls module 2.
The FPGA overall controls module 2 be mainly used in receiving the ICD files that ARINC 429 bus control units 1 send and
The balance parameters that DPU is sent on machine, and after carrying out dissection process to the contents of ICD files, its parameter value is sent to DVI selections
Distribute module 10, control the alternative processing to DVI vision signals.Simultaneously FPGA overall controls module 2 will FEB=0 and FEB=
Under 1 different control signals, FPGA pins BST_2, BST_1, BST_0 level signal are sent to DVI well-balanced adjustments module 9, with
DVI well-balanced adjustments module is controlled to the equilibrium treatment per DVI vision signals all the way.
The DVI interface protection module 8 is used to carry out interface protection to the input/output interface on Video processing board, prevents
Only board and chip are by electrostatic equivalent damage.
The DVI distribute modules 11 be used for by interface protection module 8, well-balanced adjustment module 9 processing after DVI6,
DVI7 vision signals carry out one-to-two processing respectively, and two-way DVI vision signals DVI6-1 and DVI6- are obtained by DVI6 vision signals
2, wherein Airborne HUD display is sent on 1 road back to, airborne video capture device is given on another 1 tunnel.Two-way DVI is obtained by DVI7 signals to regard
Frequency signal DVI7-1 and DVI7-2, wherein Airborne HUD display is sent on 1 road back to, airborne video capture device is given on another 1 tunnel.
Referring to Fig. 2：The DVI well-balanced adjustments module 9 receives FPGA from model DS16EV5110 balanced device chip
Overall control module 2 is under the different control signals in FEB=0 and FEB=1, FPGA pins BST_2, BST_1, BST_0 level letter
Number, and obtain corresponding equalizer gain value（Such as table 1）, it is balanced so as to be carried out to outside input per DVI vision signals all the way
Processing, to obtain good DVI vision signals, and it is sent to DVI selection distribute modules 10 and DVI distribute modules 11.
Referring to Fig. 3, the DVI selections distribute module 10 uses SN65LVCP65114 chips, to being protected by DVI interface
DVI1-1, DVI2-1 after module 8 and well-balanced adjustment module 9 are handled, DVI1-2, DVI2-2, DVI1-3, DVI2-3, DVI1-4,
DVI2-4, DVI1-5, DVI2-5 DVI vision signals carry out one-to-two processing and alternative processing respectively.One-to-two processing is logical
DEMUX is crossed by first via DVI1-1（By taking DVI1-1 as an example）Vision signal be decomposed into two-way DVI vision signals DVI1-1A and
DVI1-1B, wherein DVI1-1B all the way（Or DVI1-1A）Send back to and display device is combined on machine, in addition DVI1-1A all the way（DVI1-
1B）Send MUX；After the second road DVI2-1 vision signals progress one-to-two processing of outside input, two-way DVI vision signals are obtained
DVI2-1A and DVI2-1B, wherein DVI2-1B all the way（Or DVI2-1A）Send back to and display device is combined on machine, in addition DVI2- all the way
1A（Or DVI2-1B）Send MUX；The ICD that MUX is sent according to FPGA overall controls module 2 parses content, to DVI1-1A and DVI2-
1A（Or DVI1-1B and DVI2-1A or DVI1-1A and DVI2-1B or DVI1-1B and DVI2-1B）Alternative processing is carried out, will
Wherein DVI vision signals give airborne video capture device all the way.
As shown in figure 4, the power transfer module 12 passes through the 28V on panel connector J599/20FJ08PFC receivers
Power supply, first passes around overcurrent protection, reverse protection, overvoltage protection, transient state suppression circuit, then by EMI noise wave filter, then
It is 5V voltages by DC-DC power source conversion, is finally transmitted after differential mode, common mode rejection circuit denoising to secondary power supply modulus of conversion
Block 13.
The secondary power supply modular converter 13 receives the 5V voltages that power transfer module 12 exports, and first passes around excessively stream guarantor
Shield, reverse protection, overvoltage protection, transient state suppression circuit, then by EMI noise wave filter, be then by DC-DC power source conversion
3.3V, 2.5V, 1.8V voltage, finally transmitted after differential mode, common mode rejection circuit denoising to external equipment.
The present invention can solve the problem that regarding for airborne combination display device and 1 ~ 2 road Airborne HUD display in 1 ~ 5 road on aircraft
Frequency signal is drawn the problem of needs, realizes multichannel DVI video distribution functions, while meeting the same DVI vision signals in rear end
Display and the demand of collection.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (9)
- A kind of 1. multichannel DVI integrated video distributing equipments, it is characterised in that：Including the bus control units of ARINC 429（1）、 FPGA overall control modules（2）, DVI interface protection location（3）, DVI well-balanced adjustment units（4）, DVI selection allocation unit（5）、 DVI allocation units（6）, power conversion unit（7）；The bus control units of ARINC 429（1）The ICD files of DPU transmissions are received by panel connector；The FPGA is overall Control module（2）Receive the bus control units of ARINC 429（1）The ICD files of transmission, and the content of its ICD file is solved Analysis, corresponding parameter is obtained, and be sent to DVI selection distribute modules（10）, the parameter is for controlling the two of two-way DVI vision signals Select one；The module is according to outside DVI video signal transmissions attenuation simultaneously, by controlling in the case of FEB=0 and FEB=1 The level signal of FPGA pins, it is sent to control well-balanced adjustment module（9）, for the equilibrium treatment to DVI vision signals；It is described DVI selects allocation unit（5）Control and one-to-two processing is carried out respectively to the two-way DVI vision signals of outside input, obtain four tunnels DVI signals, according to FPGA overall control modules（2）The level signal of transmission, equalizer gain value, is controlled to one corresponding to selection The first via DVI vision signals and the second road DVI vision signals divided after two processing carry out alternative output；The DVI allocation units（6）For carrying out one-to-two processing to the vision signals of DVI all the way of input, obtain two-way DVI and regard Frequency signal, wherein sending Airborne HUD display back to all the way, another way gives airborne video capture device；The power conversion unit（7）For to the bus control units of ARINC 429（1）, FPGA overall control modules（2）, DVI connects Mouth protection location（3）, DVI well-balanced adjustment units（4）, DVI selection allocation unit（5）, DVI allocation units（6）Power supply.
- 2. multichannel DVI integrated video distributing equipments according to claim 1, it is characterised in that：The described DVI connects Mouth protection module（8）Interface protection, well-balanced adjustment module are carried out to the input/output interface on Video processing board（9）To each Road DVI vision signals carry out equilibrium treatment.
- 3. multichannel DVI integrated video distributing equipments according to claim 1 or 2, it is characterised in that：The DVI interface Protection location（3）For 14 independent DVI interface protection modules（8）.
- 4. multichannel DVI integrated video distributing equipments according to claim 3, it is characterised in that：The DVI well-balanced adjustments Unit（4）For 7 independent well-balanced adjustment modules（9）.
- 5. multichannel DVI integrated video distributing equipments according to claim 4, it is characterised in that：The DVI selections distribution Unit（5）Distribute module is selected for 5 independent DVI（10）, each DVI selections distribute module（10）Input be 2 tunnels independence DVI vision signals.
- 6. multichannel DVI integrated video distributing equipments according to claim 5, it is characterised in that：The DVI allocation units （6）For 2 independent DVI distribute modules（11）.
- 7. multichannel DVI integrated video distributing equipments according to claim 6, it is characterised in that：The Power convert list Member（7）Respectively power transfer module（12）, secondary power supply modular converter（13）；Described power module（12）28V power supplys on aircraft are received by connector, and by overcurrent protection, reversely guarantor Shield, overvoltage protection, transient state suppression circuit, then by EMI noise wave filter, be then converted to using DC-DC power source conversion module 5V voltages, finally transmitted after differential mode, common mode rejection circuit denoising to secondary power supply modular converter（13）；The secondary power supply module（13）Receive power transfer module（12）The 5V voltages of output, first pass around overcurrent protection, anti- To protection, overvoltage protection, transient state suppression circuit, then by EMI noise wave filter, then turned using DC-DC power source conversion module 3.3V, 2.5V, 1.8V voltage are changed to, finally exports power supply to the device after differential mode, common mode rejection circuit denoising.
- 8. multichannel DVI integrated video distributing equipments according to claim 7, it is characterised in that：Described well-balanced adjustment Module（9）From model DS16EV5110 balanced device chip.
- 9. multichannel DVI integrated video distributing equipments according to claim 8, it is characterised in that：Described DVI selections point With module（10）From SN65LVCP65114 chips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710564071.8A CN107509046A (en) | 2017-07-12 | 2017-07-12 | Multichannel DVI integrated video distributing equipments |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710564071.8A CN107509046A (en) | 2017-07-12 | 2017-07-12 | Multichannel DVI integrated video distributing equipments |
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| CN107509046A true CN107509046A (en) | 2017-12-22 |
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| CN201710564071.8A Withdrawn CN107509046A (en) | 2017-07-12 | 2017-07-12 | Multichannel DVI integrated video distributing equipments |
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Cited By (2)
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| CN111669533A (en) * | 2020-06-04 | 2020-09-15 | 北京隆鑫泰业科技有限公司 | Signal distribution equipment |
| CN112040183A (en) * | 2020-08-21 | 2020-12-04 | 中航华东光电（上海）有限公司 | Remote nondestructive transmission display and control system |
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Application publication date: 20171222 |