CN108718400A - A kind of display screen prolongation structure of video conference device - Google Patents
A kind of display screen prolongation structure of video conference device Download PDFInfo
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- CN108718400A CN108718400A CN201810885383.3A CN201810885383A CN108718400A CN 108718400 A CN108718400 A CN 108718400A CN 201810885383 A CN201810885383 A CN 201810885383A CN 108718400 A CN108718400 A CN 108718400A
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- 230000006835 compression Effects 0.000 claims abstract description 32
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- 230000006854 communication Effects 0.000 claims description 29
- 238000004891 communication Methods 0.000 claims description 29
- 235000015429 Mirabilis expansa Nutrition 0.000 claims description 6
- 244000294411 Mirabilis expansa Species 0.000 claims description 6
- 235000013536 miso Nutrition 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 230000007175 bidirectional communication Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 7
- 238000012546 transfer Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
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- 238000005457 optimization Methods 0.000 description 2
- 241001347978 Major minor Species 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
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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
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The present invention provides a kind of display screen prolongation structures of video conference device, belong to video conference device technical field.It solves the problems, such as the construction effect of existing video conference device and bad.A kind of display screen prolongation structure of video conference device, including host, at least one host display and multiple sub- display screens, host display is connect with host, host is connected with the transmission control panel without compression Video & Audio signal and downward Primary Transmit for receiving host, sub- display screen is connected with the series control plate for being shown and being transferred to next stage without compression Video & Audio signal for that will receive upper level, the series control plate of one of them sub- display screen is connected with the transmission control panel makes the sub- display screen obtain no compression Video & Audio signal from control panel is sent and shown.The present invention can improve multi-display property easy to connect in the case where keeping acceptable retardation rate.
Description
Technical field
The invention belongs to video conference device technical fields, are related to a kind of display screen prolongation structure of video conference device.
Background technology
With the development of science and technology, can usually be held a meeting using video conference device in modern society, it in this way can be accurate
Transmit really and comprehensively conference content.The main hardware of video conference device be a host and Duo Tai display screens and microphone,
The ancillary equipments such as speaker, host is for transmitting and handling the data such as voice, video, and display screen is for showing the number such as corresponding video
According to.
Carry out video conference and need higher synchronism, i.e., the content shown by display screen being connect with host will with it is farthest
The problem of content shown by the display screen of journey has synchronism, is unable to display delay, the solution hitherto provided is
All display screens are all directly connected to host, i.e., all display screens are connected in parallel on host.Video conference device such as China is specially
Shown in a kind of disclosed multiscreen display apparatus application No. is CN200420121815.7 of sharp document comprising video conference is set
It is provided with the video card or polylith video card for supporting double screen, video in standby terminal device (host), video conference device terminal device
Conference facility terminal device is connected with two or more displays, when terminal device starts video conference device system,
A display is automatically selected as basic display unit, sets its screen coordinate, using remaining display as from display, and according to
The relative position relation of basic display unit calculates the relative screen coordinate respectively from display screen, by the different window of video conference device
Body interface is corresponding with the screen coordinate region of principal and subordinate's display respectively, and different window interfaces are shown by principal and subordinate's display.
Above-mentioned patent is directly connected with multiple displays respectively by video conference device terminal device i.e. host
Connect, only the level-one connection between host and display, meeting-place is prodigious in the case that encountering, each display and host away from
From difference, but be required for connecting with host, to how cabling can cumbersome, actual meeting-place and walking line it is excessive, construct
It is very troublesome with safeguarding, therefore the construction effect of video conference device and bad.
For solve the problems, such as construction, have be designed using the scheme of wireless network connection in the prior art, i.e., host with
Communication connection is directly established between multiple display screens, although solving the problems, such as routing traces, due to being wirelessly transferred speed
Low, the problem of can not meet display screen simultaneous display, i.e., display delay is very big, the reason is that data meet transmission in transmission
Efficiency can compress data in transmitting terminal, be unziped it in receiving terminal, in the screen display for carrying out high definition, largely
Data processing so that equipment requirement is very high, and market acceptance level is not high.
Invention content
There is the above problem in the present invention, it is proposed that a kind of display screen expansion knot of video conference device in view of the prior art
Structure, the technical problem to be solved by the present invention is to multi-display connection how is improved in the case where keeping acceptable retardation rate
Convenience.
The present invention is realized by following technical proposal：A kind of display screen prolongation structure of video conference device, including master
Machine, at least one host display and multiple sub- display screens, the host display are connect with host, which is characterized in that institute
It states host and is connected with the transmission control panel without compression Video & Audio signal and downward Primary Transmit, the sub- display for receiving host
Screen is connected with the series control plate for being shown and being transferred to next stage without compression Video & Audio signal for that will receive upper level,
In a sub- display screen series control plate connect with the transmission control panel make the sub- display screen from send control panel obtain
No compression Video & Audio signal is shown that the series control plate series connection of each display screen makes the series control of latter sub- display screen
Plate is obtained from the series control plate of previous adjacent sub- display screen and is shown without compression Video & Audio signal.
After host connects host display, the display of host display can be controlled by host, carrying out sub- display
When screen extension, the audio/video information in host is transferred to series control plate and by series control plate in son by transmission control panel
Show screen display, and series control plate forms the serial communication circuit for having and outputting and inputting, and son according to actual needs
Display screen quantity is sequentially connected in series, and the communicating circuit formed after making multiple sub- display screens be attached is straight line cascaded structure,
The display information of display screen is obtained from serial communication circuit, i.e., the information that video is shown is obtained from upper level series control plate
, rather than obtained from host.In this way, when being expanded, it can be directly from the series control of a upper sub- display screen
Plate connects a transmission line and can expand, compared to come one again from host more simple to the construction of scheduled position
Just, it is seen that the display screen prolongation structure of this video conference device can be convenient for layout and the connection of display screen.And this linear string
It is coupled the communicating circuit of structure and is generated the case where capable of directly transmitting the audio-video signal of no compression, there will not be delay.
In the display screen prolongation structure of above-mentioned video conference device, the series control plate, which is equipped with, receives IC and hair
IC is sent, the HDI buses of both-way communication can be carried out by receiving connection between IC and transmission IC, received IC and connected based on HDbaseT agreements
There are receiving terminal RJ45 interfaces, send IC and transmitting terminal RJ45 interfaces are connected with based on HDbaseT agreements, energy is integrated with receiving in IC
Couple the receiving terminal link processors that receiving terminal RJ45 interfaces carry out high-speed bidirectional communication with HDI buses, is integrated sending in IC
There are connection transmitting terminal RJ45 interfaces to carry out the transmitting terminal link processors of high-speed bidirectional communication with HDI buses.
IC, i.e. integrated circuit are the acronyms of integrated circuit.HDbaseT is existing audio video transmission
Standard.It receives IC and sends the chip for the VS2000 series that IC can select Valens companies to produce, link is integrated in chip
The CPU that processor and control link processors are attached, this case go out a block series control by using this chip manufacturing
Plate is realized the serial communication circuit of high-speed transfer, is specifically connect by transmitting terminal RJ45 as input port by receiving terminal RJ45 interfaces
Mouth is used as delivery outlet, establishes the communicating circuit of linear transmission between the two, without the compression processing of audio/video information, that is, receives
IC is connected with receiving terminal RJ45 interfaces based on HDbaseT agreements, and both-way communication can be carried out by receiving connection between IC and transmission IC
HDI buses send IC and are connected with transmitting terminal RJ45 interfaces based on HDbaseT agreements, and such input port and delivery outlet are formed
Concatenated high speed communication channel.And the communication channel that this series connection is formed can quickly transmit the audio-video signal of no compression, under
After the series control plate of level-one is linked to the series control plate of upper level by five classes more than on the net, higher biography can be also kept
Defeated speed, this structure straight line communication channel, each quality audio and video signal transmission is in s grades of μ, and retardation rate is smaller than 25 μ s, significantly
Retardation rate is reduced, the delay of picture will not be generated after multilayer cascade.In addition to Valens companies production VS2000 series
Outside chip, as long as being integrated in other IC, quickly to connect the link processors of HDI buses and RJ45 interfaces be all that can apply
's.
Be equipped in the display screen prolongation structure of above-mentioned video conference device, in the reception IC at receiving terminal link
The HDMI output interface of reason device connection and the receiving terminal CPU for controlling and receiving end link processors, in the control of receiving terminal CPU
Under, the audio/video information of no compression can be transported to HDMI output interface by receiving terminal RJ45 interfaces by receiving terminal link processors
Corresponding sub- display screen is set to be shown.By HDMI output interface and link processors, receiving terminal RJ45 interfaces can be connect
The audio-video signal received can must be transported at a high speed sub- display screen and be shown, the foundation in this channel to show and transmit
Audio-video signal does not have too big delay to next stage.
In the display screen prolongation structure of above-mentioned video conference device, the transmission control panel, which is equipped with, sends IC, hair
It send and is equipped with transmitting terminal link processors and transmitting terminal CPU, the transmission IC for controlling transmitting terminal link processors in IC
Transmitting terminal RJ45 interfaces are connected with based on HDbaseT agreements, is equipped in the transmission IC and is connect with transmitting terminal link processors
HDMI input interfaces make HDMI input interfaces establish both-way communication with transmitting terminal RJ45 interfaces to connect.In the control of transmitting terminal CPU
Under system, the audio/video information without compression that can input HDMI input interfaces must be sent to by transmitting terminal link processor high speeds
Transmitting terminal RJ45 interfaces, and there are transmitting terminal RJ45 interfaces outer must be sent to next stage by HDbaseT agreements high speed.
As the first scheme that sub- display screen camera audio-video signal transmits in cascaded structure, in above-mentioned video council
The HDMI inputs connecting with transmitting terminal link processors are equipped in the display screen prolongation structure for discussing equipment, in the transmission IC to connect
Mouth and the transmitting terminal CPU for controlling transmitting terminal link processors can be by HDMI input interfaces under the control of transmitting terminal CPU
The audio/video information without compression of input is transported to receiving terminal link processors by transmitting terminal link processors and HDI buses,
Under the control of receiving terminal CPU, which is connect by receiving terminal link processors and receiving terminal RJ45
Mouth is transported to the transmitting terminal RJ45 interfaces of upper level and under the transmitting terminal CPU control of this grade, the audio/video information without compression
The receiving terminal of this grade is transported to by the HDI buses of the transmitting terminal RJ45 interfaces of this grade, transmitting terminal link processors and this grade
Link processors, reversely the audio-video signal of no compression is delivered in host such level-one level-one by conveying.
Both-way communication channel is established in serial communication circuit structure so that the audio-video signal of any level can reversely to
Upper level is transmitted and is stored in host.To avoid time delay from improving efficiency, host is segmented into point host one and divides host two,
The data reversely transmitted are deposited into point host two, avoid influencing to divide audio-video signal in host one defeated from top to bottom
It send.
As the second scheme that sub- display screen camera audio-video signal transmits in cascaded structure, above-mentioned video conference
In the display screen prolongation structure of equipment, the host includes dividing host one and dividing host two, and described divides host one and host
Display screen connects, and described divides host two to be connected with camera display screen, and reception is in series on the last series control plate
Control panel, the reception control panel include receiving IC and being connect based on HDbaseT agreements with the receiving terminal RJ45 that IC is connect is received
Mouthful, the HDMI output interface being connect with receiving terminal link processors is equipped in the reception IC and for controlling and receiving end link
The receiving terminal CPU of processor, the HDMI output interface are connect with host two is divided.Receive control panel and the last series connection control
It will be connected between RJ45 interfaces by cable between making sheet, so that reception control panel is connected with series control plate, the production of arbitrary level-one
Raw video or audio-frequency information is transmitted from last grade to next stage, and by reception control panel under the control of receiving terminal CPU
Audio/video information is transmitted in point host two, by dividing host two to carry out data storage processing, needs to show in arbitrary level-one and be somebody's turn to do
When audio/video information, by dividing host two, being transmitted from upper level to next stage difference level-one level-one up to the series connection to calling
Then control panel carries out output and shows.
As an optimization, in the display screen prolongation structure of above-mentioned video conference device, the receiving terminal RJ45 interfaces and
Between transmitting terminal RJ45 interfaces by five class cables or surpass five class cables connection, wherein two-way twisted-pair feeder for transmit divides host one send out
The audio/video information sent, in addition two-way twisted-pair feeder be used to transmit the video information of camera to dividing host two.In this way
The efficiency of transmission of annular series system can be improved.For actual application, four road twisted-pair feeders can redistribute into the transmission of four tunnels
Mode.
In the display screen prolongation structure of above-mentioned video conference device, it is additionally provided with MCU on the series control plate, it is described
MCU on receive IC be connected with I2C buses and/or UART buses, on the MCU with send IC and be connected with I2C buses and/
Or UART buses, keystroke interface is also associated with by I/O interfaces on the MCU.
MCU is that the English of Micro Controller Unit is write a Chinese character in simplified form, and is micro-control unit, for controlling, is such as controlled aobvious
Display screen overturning, camera rotation, loudspeaker output volume etc..These bus connecting modes make MCU be built to receiving IC and sending IC
Vertical control and data communication.Simple replacement MCU as the program only can pass through an I2C buses and/or UART buses point
It is not attached with reception IC and transmission IC, is then communicated and controlled in a manner of addressing.And connection button can on MCU
To be set according to actual needs, such as controlling camera, the order of speech for controlling microphone etc. button.In order to after
Can better Function Extension, the interfaces such as some such as UART can also be reserved on MCU, so as to subsequent extension.
In the display screen prolongation structure of above-mentioned video conference device, the output that auxiliary is additionally provided on the reception IC connects
Mouthful, including I2C interface, MISO interfaces, Ethernet interface, I2S interfaces, CIR interfaces, UART interface and/or SPDIF interfaces, pass through
I2C interface connects speaker or earphone connector.By the interface of each auxiliary, corresponding data can be exported, such as be passed through
I2C interface connects speaker or earphone, can be by audio output.It can be arranged on circuit by CIR interfaces for another example infrared
I/O interfaces carry out infrared data transmission.
In the display screen prolongation structure of above-mentioned video conference device, the input that auxiliary is additionally provided on the transmission IC connects
Mouthful, including I2C interface, MISO interfaces, Ethernet interface, I2S interfaces, CIR interfaces, UART interface and/or SPDIF interfaces, I2C
Interface connects microphone connector.By the interface of each auxiliary, corresponding data can be inputted, such as pass through I2C interface connects
Microphone, can be by audio input.Infrared I/O interfaces can be arranged on circuit by CIR interfaces for another example, carry out infrared data
Transmission.
Compared with prior art, the display screen prolongation structure of this video conference device has the following advantages：
1, host of the present invention forms the multistage since host with sub- display screen and connect, therefore only needs to arrange the son of foremost
Display screen is connect with host, as long as subsequent sub- display screen connects previous display screen, substantially reduces connection difficulty, is improved
Cabling too long the problem of being difficult to complete when connecting convenience, and being also avoided that display screen layout.
2, the present invention can be so that the series control plate per level-one reversely conveys or is formed annular in cascaded structure circuit
Transmission so that the audio-video signal that series control plate is sent can also be obtained by other series control plates, to improve information exchange
Practicability and convenience, and host conveys from top to bottom and conveying from the bottom up independent simultaneously can carry out, and improves conveying
Efficiency not will produce delay effect.
3, the present invention established in series control plate high frequency, high speed hardware circuit so that each quality audio and video signal
The retardation rate of transmission improves the usage experience of video conference device less than 25 μ s to substantially reduce retardation rate.
4, the distance of single-stage connection can meet each conference scenario demand up to 100 meters.
Description of the drawings
Fig. 1 is the prolongation structure schematic diagram of the video conference device in the embodiment of the present invention one.
Fig. 2 is the prolongation structure schematic diagram of the video conference device in the embodiment of the present invention two.
Fig. 3 is the prolongation structure schematic diagram of the video conference device in the embodiment of the present invention three.
Fig. 4 is the principle schematic diagram of series control plate in embodiment one.
Fig. 5 is the interface diagram of series control plate in embodiment one.
Fig. 6 is the principle schematic diagram that control panel is sent in embodiment one.
Fig. 7 is the principle schematic diagram that control panel is received in embodiment three.
In figure, 1, host；2, host display；3, sub- display screen；4, series control plate；5, control panel is sent；6, it receives
Control panel；7, camera display screen.
Specific implementation mode
Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described,
However, the present invention is not limited to these examples.
Embodiment one：
As shown in Figure 1, host display 2 is placed on front, and by host by us when arranging video conference scene
Display screen 2 is connect with host 1.And the sub- display screen 3 on attending a banquet is determined according to actual demand, will be generally above 3 or more
, especially convention, the sub- display screen 3 that may be connected just much more than 100.After the arrangement of Fig. 1, Jiang Nengji
Big simplifies construction, specifically：
Control panel 5 will be sent to be connected on host 1 by HDMI connecting lines, it is to be used for 1 nothing of receiving host to send control panel 5
Compression Video & Audio signal and the downwards pcb board of Primary Transmit send control panel 5 and connect series control plate 4, string by five class cables
Joint control making sheet 4 is the pcb board for being shown without compression Video & Audio signal for that will receive upper level and being transferred to next stage, series connection
4 connexon display screen 3 of the control panel and sub- display screen 3 is shown and played without compression Video & Audio signal to reception, it is next
The series control plate 4 of grade is connected to the series control plate 4 of upper level by cable, is gone here and there successively according to 3 actual quantity of sub- display screen
Connection makes the series control plate 4 of latter sub- display screen 3 from adjacent previous in this way, the series control plate 4 of each display screen is connected
The series control plate 4 of a sub- display screen 3 is obtained and is shown without compression Video & Audio signal, can after the completion of concatenated major project
It is entire in this way to increase all kinds of control buttons, camera, speaker or earphone etc. ancillary equipment on series control plate 4
The scene of video conference can deploy, and construction becomes very easy.
As shown in figure 4, series control plate 4, which is equipped with, receives IC and transmission IC, in this example, receives IC and send IC and select respectively
With the R chips and T chips of the VS2000 series that colligo companies produce.It receives IC and is equipped with the bottom for being used for external signal interface
Layer physical layer (PHY), bottom physical layer are connected with receiving terminal RJ45 interfaces after connecting transformer, receive and be equipped with articulamentum in IC,
Articulamentum includes enabling the main receiving terminal link processors and auxiliary receiving terminal link that data transmit for connecting two-way communication channel
Processor, main receiving terminal link processors are connect by primary input channel with bottom physical layer, and the connection structure of this part uses
HDbaseT agreements carry out both-way communication.Main receiving terminal link processors are connected with HDMI output interface for exporting audio and video letter
Number, this bars transfer passage can reach 8Gbit/s, and auxiliary receiving terminal link processors pass through auxiliary input channel and other outputs
Port connects, this bars transfer passage can reach 300Mbit/s.It receives in IC and is equipped with for controlling and receiving end link processing
The receiving terminal CPU of device, therefore, under the control of receiving terminal CPU, receiving terminal RJ45 interfaces can lead to the audio/video information of no compression
Crossing receiving terminal link processors and being transported to HDMI output interface makes corresponding sub- display screen 3 be shown, as long as sub- display screen 3 is even
Be connected in HDMI output interface just obtain audio-video signal carry out audio and video show.
It is similar with IC is received to send IC, equipped with the bottom physical layer (PHY) for external signal interface, bottom physical layer connects
Transmitting terminal RJ45 interfaces are connected with after connecing transformer, sends and is equipped with articulamentum in IC, articulamentum includes for connecting two-way communication
Channel keeps the main transmitting terminal link processors and auxiliary transmitting terminal link processors that data transmit, main transmitting terminal link processors logical
It crosses main output channel to connect with bottom physical layer, the connection structure of this part carries out both-way communication using HDbaseT agreements.Main hair
Sending end link processors are connected with HDMI input interfaces for inputting audio-video signal, this bars transfer passage can reach
8Gbit/s, auxiliary transmitting terminal link processors are connect by auxiliary input channel with other input ports, this bars transfer passage can
To reach 300Mbit/s.The transmitting terminal CPU being equipped in IC for controlling transmitting terminal link processors is sent, therefore, in transmitting terminal
Under the control of CPU, the audio/video information without compression that can input HDMI input interfaces passes through transmitting terminal link processor high speeds
Transmitting terminal RJ45 interfaces must be sent to, and there are transmitting terminal RJ45 interfaces outer must be sent to next stage by HDbaseT agreements high speed.It will
After camera is connected by HDMI connecting lines, video information can be passed through main transmitting terminal link processors, main output channel, bottom
It spreads out of outside physical layer and transmitting terminal RJ45 interfaces.
Receive IC and send IC be made on one piece of pcb board, and both be equipped with HDI interfaces, receive IC and send IC it
Between the HDI buses of both-way communication can be carried out by the connection of HDI interfaces, to improve transmission efficiency, IC will be received and to send IC mutual
It is close.The CPU for controlling major-minor link processors is integrated in chip, specifically by receiving terminal RJ45 interfaces as input port, by
Transmitting terminal RJ45 interfaces establish the communicating circuit of linear transmission between the two as delivery outlet, the pressure without audio/video information
Contracting is handled, that is, is received IC and be based on HDbaseT agreements and be connected with receiving terminal RJ45 interfaces, is received IC and is sent that connect between IC can be into
The HDI buses of row both-way communication send IC and are connected with transmitting terminal RJ45 interfaces based on HDbaseT agreements, such input port and defeated
Outlet is formed concatenated high speed communication channel.And the communication channel that this series connection is formed can quickly transmit the sound of no compression
Vision signal, this structure straight line communication channel, substantially reduces retardation rate, and prolonging for picture will not be generated after multilayer cascade
Late.
As shown in figure 5, being additionally provided with MCU on series control plate 4, I is connected between MCU and reception IC2C buses and UART
Bus is connected with I between MCU and transmission IC2C buses and UART buses, are also associated with by I/O interfaces by bonded on MCU
Mouthful.Display screen can also make touch display screen, and control circuit is connected on MCU and is controlled.The host display 2,
Camera display screen 7 and/or sub- display screen 3 use touch display screen, the host display 2, camera display screen 7 and/
Or the touch control interface of sub- display screen 3 and the MCU, one of receive IC or send IC and be attached, it is connected on MCU
The button of permission is touched for control display screen.The control circuit of touch display screen is connected on MCU, and touch screen is enable to control
Various ancillary equipments, such as the control circuit of volume, camera either touch display screen are connected to and receive IC or send IC simultaneously
It is also feasible to be sent into MCU and carry out control, and selection key is connected in keystroke interface and is carried out to the touch permission of touch display screen
Selection control.
Receive the output interface that IC is equipped with auxiliary, including I2C interface, MISO interfaces, Ethernet interface, I2S interfaces, CIR
Interface, UART interface and/or SPDIF interfaces, pass through I2C interface connects speaker or earphone connector, CIR interfaces can be in electricity
Infrared I/O interfaces are arranged in road, carry out infrared data transmission.By the interface of each auxiliary, corresponding data can be exported.
These interfaces can be increased, reduced or be reserved according to practical situation.The interface of auxiliary can also include that principal and subordinate is arranged
USB interface, USB interface can connect mouse-keyboard etc., carry out the input operation of signal.
Send the input interface that IC is equipped with auxiliary, including I2C interface, MISO interfaces, Ethernet interface, I2S interfaces, CIR
Interface, UART interface and SPDIF interfaces, I2C interface connects microphone connector, passes through I2C interface connects microphone, can be by audio
Infrared I/O interfaces can be arranged in input, CIR interfaces on circuit, carry out infrared data transmission.By the interface of each auxiliary,
Corresponding data can be inputted.These interfaces can be increased, reduced or be reserved according to practical situation.Auxiliary connects
Mouth can also include the USB interface of principal and subordinate's setting, and USB interface can connect mouse-keyboard etc., carry out the input operation of signal.
The design that series control plate 4 passes through above structure so that the receiving terminal RJ45 on the series control plate 4 of next stage connects
After mouth is connect with the transmitting terminal RJ45 interfaces of the series control plate 4 of upper level by five classes on the net, connected in 100 meters long of cables
Under can also keep good efficiency of transmission, the transmission of level-one audio-video signal between two neighboring series control plate 4 in s grades of μ,
Retardation rate is smaller than 25 μ s.
IC is sent as shown in fig. 6, sending and being provided only on control panel 5, IC is sent and is equipped with the bottom for being used for external signal interface
Physical layer (PHY), bottom physical layer are connected with transmitting terminal RJ45 interfaces after connecting transformer, send and are equipped with articulamentum in IC, even
It includes enabling at main transmitting terminal link processors that data transmit and auxiliary transmitting terminal link for connecting two-way communication channel to connect layer
Device is managed, main transmitting terminal link processors are connect by main output channel with bottom physical layer, main transmitting terminal link processors connection
There are HDMI input interfaces for inputting audio-video signal, which is connect with host 1 by HDMI connecting lines.Even
When connecing host 1, series control plate 4, which can also be used as, sends control panel 5 to use, and series control plate 4 has and sends control panel 5
Repertoire.
Host 1 is connected by sending control panel 5, and multiple sub- display screens 3 are connected by series control plate 4, keeps multiple sons aobvious
The communicating circuit that display screen 3 is formed after being attached is straight line cascaded structure, and the display information of display screen is from serial communication circuit
It obtaining, i.e., the information that video is shown is obtained from upper level series control plate 4, rather than obtained from host 1.In this way,
When being expanded, directly can connect a transmission line from the series control plate 4 of a upper sub- display screen 3 can expand
Come, comes one again to scheduled position construction more simplicity compared to from host 1, it is seen that the display of this video conference device
Shield layout and connection that prolongation structure can be convenient for display screen.
Embodiment two
Embodiment two is substantially identical as embodiment one, and different points is, as shown in Fig. 2, the host 1 divides for a point master
Machine one and divide host two, divide host one and divide host two that can be made of one, can also make it is independent, divide host one with it is main
Machine display screen 2 connects, and host two is divided to be connect with camera display screen 7, and host one is divided to connect series control by sending control panel 5
Plate 4 divides host two on the series control plate 4 by HDMI output interface connection.Host two is divided to be mainly used for receiving camera
Deng audio/video information and storage and processing, i.e. camera at the arbitrary level-one display screen of cascaded structure obtain permit after,
It is sent to point host two from the bottom up in channels in series, host two is divided by camera signals to include in camera display screen
On 7, the request of the display screen of any level can also be answered, the audio-video signal of the camera in host two will be divided by series via
The display screen for being sent to request is shown.
Specific reversed conveying is as follows：HDMI input interfaces connect the equipment such as camera, input the audio and video letter without compression
Number to the main transmitting terminal link processors sent in IC, under the control of transmitting terminal CPU, the nothing that HDMI input interfaces can be inputted
The audio/video information of compression is transported to receiving terminal link processors by transmitting terminal link processors and HDI buses, in receiving terminal
Under the control of CPU, which is transported to by receiving terminal link processors and receiving terminal RJ45 interfaces
Transmitting terminal RJ45 interfaces of upper level and under the transmitting terminal CPU of this grade controls, which passes through the grade
Transmitting terminal RJ45 interfaces, transmitting terminal link processors and this grade HDI buses be transported to the receiving terminal link processors of this grade,
Reversely the audio-video signal of no compression is delivered in point host two such level-one level-one by conveying.
Therefore, some buttons are added on MCU, to control the request of entire cascaded structure and beating for response and single-stage
Open closing control.In this way, the display screen of entire cascaded structure can have stronger function.
Embodiment three
Embodiment three is substantially identical as embodiment one, and different points is, as shown in figure 3, the host 1 divides for a point master
Machine one and divide host two, divide host one and divide host two that can be made of one, can also make it is independent, divide host one with it is main
Machine display screen 2 connects, and host two is divided to be connect with camera display screen 7, and reception control is in series on the last series control plate 4
Making sheet 6 receives the connection of control panel 6 and divides host two, divides host one and divide host two that can establish both-way communication to connect, thus constitute
One annular communication modes.Audio-video signal is from dividing the level-one Primary Transmit from top to bottom of host one, the display of arbitrary level-one
The audio-video signal of camera can be sent to point host two downwards by the camera at screen, and host two is divided to store audio and video letter
Number, and according to the request of arbitrary level-one (in addition to this grade sends camera audio-video signal), the camera shooting in host two can will be divided
Head signal is sent to from top to bottom to be sent out the display screen of request and is shown.Certainly, as an optimization, this grade sends camera shooting head tone and regards
Subordinate's display screen of the display screen of frequency signal can also directly be shown according to the camera audio-video signal of upper level, can be with
It is in optimized selection as needed.
It receives the concrete structure of control panel 6 and receives IC as shown in fig. 7, receiving control panel 6 and being equipped with, reception IC, which is equipped with, to be used for
The bottom physical layer (PHY) of external signal interface, bottom physical layer are connected with receiving terminal RJ45 interfaces after connecting transformer, receive
Articulamentum is equipped in IC, articulamentum includes the main receiving terminal link processors for enabling data to transmit for connecting two-way communication channel
With auxiliary receiving terminal link processors, main receiving terminal link processors are connect by primary input channel with bottom physical layer, main reception
End link processors are connected with HDMI output interface for exporting audio-video signal.Series control plate 4 can also be used as reception control
Making sheet 6 uses, and series control plate 4 has the repertoire for receiving control panel 6.HDMI output interface is connect with host two is divided.
It is easy to connect, receiving control panel 6 and sending control panel 5 can make together, can also separate, because being annular
Structure receives control panel 6 and is also replaced and be connected on any one node with series control plate 4.In order to improve efficiency of transmission, connect
By five class cables or surpass the connection of five class cables between receiving end RJ45 interfaces and transmitting terminal RJ45 interfaces, wherein two-way twisted-pair feeder is used for
Transmission divides the audio/video information that host one is sent, and in addition two-way twisted-pair feeder is used to transmit the video information of camera to dividing host
Two.The efficiency of transmission of annular series system can be improved in this way.For actual application, four road twisted-pair feeders can be again
It is distributed into four tunnel transmission modes.
Specific embodiment described herein is only an example for the spirit of the invention.Technology belonging to the present invention is led
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Although host 1 is used more herein, host display 2, sub- display screen 3, series control plate 4, sends control
Plate 5 receives the terms such as control panel 6, camera display screen 7, but it does not preclude the possibility of using other terms.Use these arts
Language is only for the convenience of describing and explaining the nature of the invention；Being construed as any one of the additional limitations is all
It is disagreed with spirit of that invention.
Claims (10)
1. a kind of display screen prolongation structure of video conference device, including host (1), at least one host display (2) and more
A sub- display screen (3), the host display (2) are connect with host (1), which is characterized in that host (1) connection is useful
In transmission control panel (5) of the receiving host (1) without compression Video & Audio signal and downward Primary Transmit, the sub- display screen (3) is even
It is connected to the series control plate (4) for being shown and being transferred to next stage without compression Video & Audio signal for upper level will to be received,
In the series control plate (4) of a sub- display screen (3) connect with the transmission control panel (5) and make the sub- display screen (3) from hair
Control panel (5) acquisition is sent to be shown without compression Video & Audio signal, series control plate (4) series connection of each sub- display screen (3) makes
The series control plate (4) of latter sub- display screen (3) is obtained from the series control plate (4) of previous adjacent sub- display screen (3)
No compression Video & Audio signal is shown.
2. the display screen prolongation structure of video conference device according to claim 1, which is characterized in that the series connection control
Equipped with receiving IC and sending IC, the HDI buses of both-way communication can be carried out by receiving connection between IC and transmission IC, be connect for making sheet (4)
It receives IC and receiving terminal RJ45 interfaces is connected with based on HDbaseT agreements, send IC and transmitting terminal RJ45 is connected with based on HDbaseT agreements
Interface is integrated with the receiving terminal that can couple receiving terminal RJ45 interfaces and HDI buses progress high-speed bidirectional communication receiving in IC
Link processors are sending the transmission that connection transmitting terminal RJ45 interfaces and HDI buses progress high-speed bidirectional communication are integrated in IC
Hold link processors.
3. the display screen prolongation structure of video conference device according to claim 2, which is characterized in that the reception IC
The interior receiving terminal equipped with the HDMI output interface being connect with receiving terminal link processors and for controlling and receiving end link processors
CPU, under the control of receiving terminal CPU, receiving terminal RJ45 interfaces can by the audio/video information of no compression by receiving terminal link at
Reason device, which is transported to HDMI output interface, makes corresponding sub- display screen (3) be shown.
4. the display screen prolongation structure of video conference device according to claim 2 or 3, which is characterized in that the hair
It send control panel (5) to be equipped with and sends IC, send and be equipped with transmitting terminal link processors in IC and for controlling transmitting terminal link processing
The transmitting terminal CPU, the transmission IC of device are connected with transmitting terminal RJ45 interfaces based on HDbaseT agreements, in the transmission IC
Keep HDMI input interfaces and the foundation of transmitting terminal RJ45 interfaces double equipped with the HDMI input interfaces being connect with transmitting terminal link processors
It is connected to communication.
5. the display screen prolongation structure of video conference device according to claim 4, which is characterized in that the transmission IC
The interior transmitting terminal equipped with the HDMI input interfaces being connect with transmitting terminal link processors and for controlling transmitting terminal link processors
CPU, under the control of transmitting terminal CPU, the audio/video information without compression that can input HDMI input interfaces passes through transmitting terminal
Link processors and HDI buses are transported to receiving terminal link processors, under the control of receiving terminal CPU, by the sound without compression
Video information by receiving terminal link processors and receiving terminal RJ45 interfaces be transported to upper level transmitting terminal RJ45 interfaces and
Under the transmitting terminal CPU controls of this grade, transmitting terminal RJ45 interfaces, transmitting terminal link which passes through this grade
The HDI buses of processor and this grade are transported to the receiving terminal link processors of this grade, and reversely conveying will be without pressure for such level-one level-one
The audio-video signal of contracting is delivered in host (1).
6. the display screen prolongation structure of video conference device according to claim 1 or 2 or 3, which is characterized in that described
Host (1) includes dividing host one and dividing host two, and described divides host one to be connect with host display (2), and described divides host
Two are connected with camera display screen (7), are in series on the last series control plate (4) and receive control panel (6), described connects
It includes the receiving terminal RJ45 interfaces for receiving IC and being connect with reception IC based on HDbaseT agreements, the reception to receive control panel (6)
The HDMI output interface being connect with receiving terminal link processors and the reception for controlling and receiving end link processors are equipped in IC
CPU, the HDMI output interface is held to be connect with host two is divided.
7. the display screen prolongation structure of video conference device according to claim 6, which is characterized in that the receiving terminal
By five class cables or surpass the connection of five class cables between RJ45 interfaces and transmitting terminal RJ45 interfaces, wherein two-way twisted-pair feeder is for transmitting
The audio/video information that point host one is sent, in addition two-way twisted-pair feeder be used to transmit the video information of camera to dividing host two.
8. the display screen prolongation structure of video conference device according to claim 1 or 2 or 3, which is characterized in that described
Be additionally provided with MCU on series control plate (4), on the MCU with receive IC and be connected with I2C buses and/or UART buses, it is described
MCU is upper to be connected with I with transmission IC2C buses and/or UART buses, are also associated with by I/O interfaces by bonded on the MCU
Mouthful.
9. the display screen prolongation structure of video conference device according to claim 8, which is characterized in that the host is aobvious
Display screen (2), camera display screen (7) and/or sub- display screen (3) use touch display screen, the host display (2) to take the photograph
The touch control interface of picture head display screen (7) and/or sub- display screen (3) is connect with the MCU, reception IC or transmission IC,
The button that permission is touched for control display screen is connected on MCU.
10. the display screen prolongation structure of video conference device according to claim 9, which is characterized in that the reception
USB interface and the output interface of auxiliary are additionally provided on IC, the output interface of auxiliary includes I2C interface, MISO interfaces, Ethernet connect
Mouth, I2S interfaces, CIR interfaces, UART interface and/or SPDIF interfaces, pass through I2C interface connects speaker or earphone connector；Institute
It is additionally provided with USB interface and the input interface of auxiliary on the transmission IC stated, the input interface of auxiliary includes I2C interface, MISO interfaces,
Ethernet interface, I2S interfaces, CIR interfaces, UART interface and/or SPDIF interfaces, I2C interface connects microphone connector.
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| CN201810885383.3A CN108718400B (en) | 2018-08-06 | 2018-08-06 | Display screen expansion structure of video conference equipment |
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