CN108924456A - One kind can remote control multiplex roles ultra high-definition video distance transmission system - Google Patents
One kind can remote control multiplex roles ultra high-definition video distance transmission system Download PDFInfo
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- CN108924456A CN108924456A CN201810874192.7A CN201810874192A CN108924456A CN 108924456 A CN108924456 A CN 108924456A CN 201810874192 A CN201810874192 A CN 201810874192A CN 108924456 A CN108924456 A CN 108924456A
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- Prior art keywords
- video
- definition video
- definition
- hdbaset
- remote control
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- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/22—Adaptations for optical transmission
Abstract
It can remote control multiplex roles ultra high-definition video distance transmission system the present invention provides one kind, including HD video sending module and HD video receiving module, it is connected between the HD video sending module and the HD video receiving module by single CAT5e/6 cable or simple optical fiber；Video interface matching, list CAT5e/6 cable or single fiber transmitted in both directions, front end can be with automatic identification terminal output optimum resolutions, remote control, high reliablity, at low cost.
Description
Technical field
The present invention relates to field of video transmission more particularly to one kind can remote control multiplex roles ultra high-definition video pass at a distance
Defeated system.
Background technique
In recent years, UHD ultra high-definition vision signal (resolution ratio >=1080p) has become the inexorable trend of current video development,
With the development of technology, requirement of the people to video quality is higher and higher, while the requirement to transmission range is more and more remoter, but because
The features such as data volume for UHD ultra high-definition signal (4K 60Hz) is big, and transmission rate is high, transmission range hinder its develop and it is wide
The main factor of general reference.
Currently, UHD ultra high-definition vision signal mainly has DVI, HDMI1.4/2.0, DP, transmission medium is mainly flat cable
(twisted pair).But because the data volume of UHD ultra high-definition signal (4K@60Hz) is big, data decay during transmission rate high-transmission
Seriously, general transmission range maximum only 5m, the transmission of 40m can only be also realized by multiple cable balanced device maximums reluctantly.
Existing remote transmission mode, which also has, (minimizes TMDS DVI and HDMI signal by simple photoelectric conversion
Transmission difference) differential signal is converted to 4 optical signals, is transmitted by 4 optical fiber, and cause field wiring to be responsible for and difficult,
TMDS signal, which exists, simultaneously extends, and be easy to cause clock skew, and at high cost, and the method is one-way transmission, front end at present
Signal source can not read the EDID signal of display terminal, can not export optimum resolution automatically, seriously affect display effect
Summary of the invention
It can remote control multiplex roles superelevation it is an object of the invention in view of the above shortcomings of the prior art, provide one kind
Clear video distance transmission system, front end can automatic identification terminal export optimum resolution, and realize remote control.
To achieve the above object, present invention employs following technical solutions：
The present invention provides one kind can remote control multiplex roles ultra high-definition video distance transmission system, including HD video
Sending module and HD video receiving module pass through between the HD video sending module and the HD video receiving module
Single CAT5e/6 cable or simple optical fiber are connected；
The HD video sending module carries out various video signal by video interface circuit and video processing circuits
Then pretreatment is uniformly converted into HDMI2.0 high-definition video signal by video conversion circuit and enters HDMI2.0 transmission and KVM
Circuit, the HDMI2.0 is sent and KVM circuit arbitrarily specifies any HDMI2.0 high-definition video signal all the way according to user demand
Output, the HDMI2.0 high-definition video signal of output enter video image processing coding unit and are handled and encoded, be encoded into
HDMI1.4 high-definition video signal, HDMI1.4 high-definition video signal are converted and are encoded to using HDBaset sending module
HDBaset agreement, the HDBaset agreement are exported by optical fiber transmission circuit.
Further, the HD video receiving module includes optical receiving circuit, described in the optical receiving circuit reception
HDBaset agreement, and the HDBaset agreement is sent to HDBaset receiving module, the HDBaset receiving module is by institute
Stating HDBaset protocol-decoding and decompiling is HDMI1.4 high-definition video signal, and HDMI1.4 high-definition video signal enters at video
Reason is converted into HDMI2.0 high-definition video signal with conversion circuit, and HDMI2.0 high-definition video signal is connect by HDMI2.0 ultra high-definition
Mouth output is to display terminal.
Further, the HD video receiving module detects the EDID of the display terminal, and by the display terminal
EDID returns to the HD video sending module by the single CAT5e/6 cable or simple optical fiber.
Further, the HD video receiving module includes USB2.0 interface, USB2.0 interface access USB mouse and
Keyboard.
Further, the HD video sending module and HD video receiving module include power supply instruction module, connection
Indicator light and communication indicator light；
The power supply instruction module is connected to line related anode using light emitting diode series limiting resistor；
The connection indicator light is by the low and high level of detection HPD signal to determine whether having equipment access, when HPD is height
When, then there is equipment access, LED light is lighted, and otherwise to be low, LED light is extinguished；
Communicate indicator light use two-color diode and MCU GPIO connection, when it is received and transmission it is completely the same, show
Communication is normal, otherwise it is red that indicator light, which is green,；
Further, the HD video sending module and HD video receiving module further include input signal indicator light,
Power failure diagnosing unit and system initialization unit；
5V power supply on video interface pin is accessed MCU's by HC74 buffer by the input signal indicator light
GPIO, by detecting the low and high level of correlation GPIO, to judge whether vision signal accesses, when corresponding GPIO be it is high, show
Corresponding video interface access, corresponding indicator light are green；
Power failure diagnosing unit, the ADC of MCU acquire line related voltage by the sampling resistor on acquisition power supply, and
It is converted into electric current, when the parameter of acquisition exceeds preset range, buzzer and indicator light are alarmed and indicated；
The REST reseting pin of functional chip is connected on the GPIO of MCU by the system initialization unit, is led to after powering on
It crosses software realization it is resetted and is initialized, when resetting successfully, then shows that initialization is normal, otherwise initialization failure.
Beneficial effects of the present invention are：It is multi-video interface matching, list CAT5e/6 cable or single fiber transmitted in both directions, preceding
End can export optimum resolution, remote control, high reliablity, at low cost with automatic identification terminal.
Have devised can remote control multiplex roles ultra high-definition video distance transmission system, realize ultra high-definition vision signal
Remote list cable or single fiber transmission, wiring is simple, reduces cost of human and material resources；
Support the input of various video interface, the video interfaces such as including VGA, DVI, HDMI, DP；
Can be with automatic identification display terminal EDID, and display terminal output optimum resolution is matched, improve display effect；
User can pass through manipulation of the USB2.0 interface realization to end main frame is sent in receiving end；
With system mode instruction and automatic fault diagnosis, show system mode more intuitive, malfunction elimination is more increased
Effect.
Detailed description of the invention
Fig. 1 be it is of the invention it is a kind of can the connection structure of remote control multiplex roles ultra high-definition video distance transmission system show
It is intended to；
Fig. 2 is the schematic illustration of HD video sending module；
Fig. 3 is the schematic illustration of HD video receiving module.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawing, to the present invention into
Row is further described.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not used to limit
The present invention.
Referring to Fig. 1, one kind can remote control multiplex roles ultra high-definition video distance transmission system, including HD video hair
Module 1 and HD video receiving module 2 are sent, is led between the HD video sending module 1 and the HD video receiving module 2
It crosses single CAT5e/6 cable or simple optical fiber is connected；
Referring to Fig. 2, the HD video sending module 1 is by various video signal, such as：VGA (analog video interface),
DVI (high definition digital video interface), HDMI1.4/2.0 (ultra high-definition video interface), DP (DisplayPort) pass through video interface
Circuit 101 and video processing circuits 102 are pre-processed, and are then uniformly converted into HDMI2.0's by video conversion circuit 103
4K@60Hz high-definition video signal enters HDMI2.0 and sends and KVM circuit 104, the HDMI2.0 send and KVM circuit 104 according to
Arbitrarily specify any HDMI2.0 high-definition video signal all the way to export according to user demand, the HDMI2.0 high-definition video signal of output into
Enter video image processing coding unit 105 to be handled and encoded, is encoded into HDMI1.4 high-definition video signal, HDMI1.4 high definition
Vision signal is converted and is encoded to HDBaset agreement using HDBaset sending module 106, and the HDBaset agreement is logical
Cross the output of optical fiber transmission circuit 107.
Referring to Fig. 3, the HD video receiving module 2 includes optical receiving circuit 201, the optical receiving circuit
201 receive the HDBaset agreement, and the HDBaset agreement is sent to HDBaset receiving module (202), described
The HDBaset protocol-decoding and decompiling are HDMI1.4 high-definition video signal, HDMI1.4 by HDBaset receiving module 202
High-definition video signal enters video processing and is converted into HDMI2.0 high-definition video signal, HDMI2.0 high definition view with conversion circuit 203
Frequency signal is exported by HDMI2.0 ultra high-definition interface 205 to display terminal 3.
The HD video receiving module 2 detects the EDID of the display terminal 3, and by the EDID of the display terminal 3
The HD video sending module 1 is returned to by the single CAT5e/6 cable or simple optical fiber.
Wherein, receiving module first detects the EDID of display terminal after system electrification, and the EDID of display terminal is passed through
To sending module, sending module is most suitable for this display terminal according to the output of EDID signal for CAT5e/6 cable or fiber pass-back
Display resolution keeps its display effect best, if rear end EDID loses, sending module default output (1920*1080) 2K@
60Hz resolution ratio, user can also be configured resolution ratio according to demand.
The HD video receiving module 2 includes USB2.0 interface 206, the USB2.0 interface 206 access USB mouse and
Keyboard.USB mouse and keyboard are accessed in the long-range manipulation realized to host side；The HDMI2.0 interface of output is directly supported existing
All resolution ratio of mainstream, maximum can support the resolution ratio of (3840*2160) 4K@60Hz.
Wherein, system mode instruction mainly includes power supply instruction, connection instruction, communication instruction, input signal instruction；Failure
Diagnosis includes power failure diagnosing, system initialization detection, connection abnormity detecting, communication abnormality detecting.
The HD video sending module 1 and HD video receiving module 2 include power supply instruction module 4, connection instruction
Lamp 5 and communication indicator light 6；
The power supply instruction module 4 is connected to line related anode using light emitting diode series limiting resistor, for referring to
Show power supply status, judges whether power supply starts.
Wherein, power circuit includes power supply circuit, power supply timing management circuit, fault monitoring circuit, whole system
It is powered using DC12V/5A.
The connection indicator light 5 is by the low and high level of detection HPD signal to determine whether having equipment access, when HPD is
Gao Shi then has equipment access, and LED light is lighted, and otherwise to be low, LED light is extinguished；
Indicator light 6 is communicated using the GPIO connection of two-color diode and MCU, the logical of end is then sent and received by comparison
News message, message length, content, check (CRC) come judge communication it is whether normal, when it is received and send it is completely the same, show
Communication is normal, otherwise it is red that indicator light, which is green,；
The HD video sending module 1 and HD video receiving module 2 further include input signal indicator light, power supply event
Hinder diagnosis unit and system initialization unit；
5V power supply on video interface pin is accessed MCU's by HC74 buffer by the input signal indicator light
GPIO, by detecting the low and high level of correlation GPIO, to judge whether vision signal accesses, when corresponding GPIO be it is high, show
Corresponding video interface access, corresponding indicator light are green；
Power failure diagnosing unit, including over-voltage monitoring, overcurrent monitoring and overheat monitoring；
Wherein, over-voltage monitoring and overcurrent monitoring are the ADC by MCU by the sampling resistor on acquisition power supply, acquire phase
Supply voltage is closed, and is converted into electric current；
The overheat monitoring is that the temperature of chip itself is monitored by chip interior temperature sensor, when the power supply of detection is defeated
Entering output voltage, electric current, chip temperature is more than setting value, and power supply indicator 8 carries out instruction alarm, when power supply indicator 8 is indigo plant
When, it is over voltage alarm；When for Huang, alarm for overcurrent；It is temperature alarm when being red；
The REST reseting pin of functional chip is connected on the GPIO of MCU by the system initialization unit, is led to after powering on
It crosses software realization it is resetted and is initialized, when resetting successfully, then shows that initialization is normal, otherwise initialization failure, it is entire to be
After the completion of system initialization, otherwise it is red that initialization indicator light 9, which is green,.
Wherein, system initialization unit is in video image processing coding unit 105 and video processing and conversion circuit 203
Middle realization.
Wherein, image processing unit includes：Video interface input circuit (ESD protection), HDMI transmitting line (HDMI2.0-
TX), ARM+DSP image procossing and coding circuit, HDBaset transmitting line (VS2XXX-TX/RX).
Embodiments of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, but can not
Therefore limitations on the scope of the patent of the present invention are interpreted as.It should be pointed out that for those of ordinary skill in the art,
Without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection model of the invention
It encloses.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (6)
1. one kind can remote control multiplex roles ultra high-definition video distance transmission system, it is characterised in that：It is sent out including HD video
Send module (1) and HD video receiving module (2), the HD video sending module (1) and the HD video receiving module
(2) it is connected between by single CAT5e/6 cable or simple optical fiber；
Various video signal is passed through video interface circuit (101) and video processing circuits by the HD video sending module (1)
(102) it is pre-processed, is then uniformly converted into the entrance of HDMI2.0 high-definition video signal by video conversion circuit (103)
HDMI2.0 is sent and KVM circuit (104), and the HDMI2.0 is sent and KVM circuit (104) are arbitrarily specified according to user demand and appointed
HDMI2.0 high-definition video signal exports meaning all the way, and it is single that the HDMI2.0 high-definition video signal of output enters video image processing coding
First (105) are handled and are encoded, and are encoded into HDMI1.4 high-definition video signal, HDMI1.4 high-definition video signal using
HDBaset agreement is converted and be encoded to HDBaset sending module (106), and the HDBaset agreement sends electricity by optical fiber
Road (107) output.
2. one kind according to claim 1 can remote control multiplex roles ultra high-definition video distance transmission system, feature
It is：The HD video receiving module (2) includes optical receiving circuit (201), and the optical receiving circuit (201) receives institute
HDBaset agreement is stated, and the HDBaset agreement is sent to HDBaset receiving module (202), the HDBaset receives mould
The HDBaset protocol-decoding and decompiling are HDMI1.4 high-definition video signal, HDMI1.4 high-definition video signal by block (202)
It is converted into HDMI2.0 high-definition video signal with conversion circuit (203) into video processing, HDMI2.0 high-definition video signal passes through
Display terminal (3) are given in HDMI2.0 ultra high-definition interface (205) output.
3. one kind according to claim 1 can remote control multiplex roles ultra high-definition video distance transmission system, feature
It is：The HD video receiving module (2) detects the EDID of the display terminal (3), and by the display terminal (3)
EDID returns to the HD video sending module (1) by the single CAT5e/6 cable or simple optical fiber.
4. one kind according to claim 1 can remote control multiplex roles ultra high-definition video distance transmission system, feature
It is：The HD video receiving module (2) includes USB2.0 interface (206), and the USB2.0 interface (206) accesses USB mouse
Mark and keyboard.
5. one kind according to claim 1 can remote control multiplex roles ultra high-definition video distance transmission system, feature
It is：The HD video sending module (1) and HD video receiving module (2) refer to including power supply instruction module (4), connection
Show lamp (5) and communication indicator light (6)；
The power supply instruction module (4) is connected to line related anode using light emitting diode series limiting resistor；
Connection indicator light (5) is by the low and high level of detection HPD signal to determine whether having equipment access, when HPD is height
When, then there is equipment access, LED light is lighted, and otherwise to be low, LED light is extinguished；
Communicate indicator light (6) use two-color diode and MCU GPIO connection, when it is received and transmission it is completely the same, show
Communication is normal, otherwise it is red that indicator light, which is green,.
6. one kind according to claim 5 can remote control multiplex roles ultra high-definition video distance transmission system, feature
It is：The HD video sending module (1) and HD video receiving module (2) further include input signal indicator light, power supply
Failure diagnosis unit and system initialization unit；
5V power supply on video interface pin is accessed the GPIO of MCU by the input signal indicator light by HC74 buffer, is led to
Cross the low and high level of detection correlation GPIO, to judge whether vision signal accesses, when corresponding GPIO be it is high, show corresponding view
The access of frequency interface, corresponding indicator light are green；
Power failure diagnosing unit, including over-voltage monitoring, overcurrent monitoring and overheat monitoring；The over-voltage monitoring and overcurrent prison
Survey is the ADC by MCU by the sampling resistor on acquisition power supply, acquires line related voltage, and be converted into electric current；
The overheat monitoring is that the temperature of chip itself is monitored by chip interior temperature sensor, when the power input of detection is defeated
Voltage, electric current, chip temperature are more than setting value out, and power supply indicator (8) carries out instruction alarm, when power supply indicator (8) are indigo plant
When, it is over voltage alarm；When for Huang, alarm for overcurrent；It is temperature alarm when being red；
The REST reseting pin of functional chip is connected on the GPIO of MCU by the system initialization unit, by soft after powering on
Part realization is resetted and is initialized to it, when resetting successfully, then shows that initialization is normal, otherwise initialization failure, at the beginning of whole system
After the completion of beginningization, otherwise it is red that initialization indicator light (9), which is green,.
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Cited By (4)
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| CN113287288A (en) * | 2021-03-31 | 2021-08-20 | 华为技术有限公司 | Data transmission method and device |
| CN113287329A (en) * | 2021-03-31 | 2021-08-20 | 华为技术有限公司 | Data transmission method and device |
| CN113489931A (en) * | 2021-06-28 | 2021-10-08 | 深圳市比特视讯有限公司 | High-definition multi-screen image processing system |
| CN113784100A (en) * | 2021-09-30 | 2021-12-10 | 中国兵器装备集团上海电控研究所 | Modular GMSL video signal optical fiber transmission system |
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Application publication date: 20181130 |