CN109981998A - A kind of control system - Google Patents

A kind of control system Download PDF

Info

Publication number
CN109981998A
CN109981998A CN201711462667.3A CN201711462667A CN109981998A CN 109981998 A CN109981998 A CN 109981998A CN 201711462667 A CN201711462667 A CN 201711462667A CN 109981998 A CN109981998 A CN 109981998A
Authority
CN
China
Prior art keywords
chip
circuit
audio
module
electrically connected
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201711462667.3A
Other languages
Chinese (zh)
Inventor
杨利民
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TIANJIN YIHUA MICROELECTRONICS CO Ltd
Original Assignee
TIANJIN YIHUA MICROELECTRONICS CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TIANJIN YIHUA MICROELECTRONICS CO Ltd filed Critical TIANJIN YIHUA MICROELECTRONICS CO Ltd
Priority to CN201711462667.3A priority Critical patent/CN109981998A/en
Publication of CN109981998A publication Critical patent/CN109981998A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/44—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/21—Server components or server architectures
    • H04N21/218—Source of audio or video content, e.g. local disk arrays
    • H04N21/2187—Live feed
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/233—Processing of audio elementary streams
    • H04N21/2335—Processing of audio elementary streams involving reformatting operations of audio signals, e.g. by converting from one coding standard to another
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
    • H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • H04N21/234309—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4 or from Quicktime to Realvideo
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4363—Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network
    • 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
    • H04N5/2628—Alteration of picture size, shape, position or orientation, e.g. zooming, rotation, rolling, perspective, translation
    • 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
    • H04N5/265—Mixing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
    • H04N5/268—Signal distribution or switching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • 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
    • H04N5/272—Means for inserting a foreground image in a background image, i.e. inlay, outlay
    • 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
    • H04N5/278—Subtitling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/10—Adaptations for transmission by electrical cable

Abstract

The present invention provides a kind of control system, including FPGA, the FPGA includes 3 USB3.0 control circuits, DDR control circuit, DMAC control circuit, Ethernet MAC control circuit, the Ethernet MAC control circuit is electrically connected with ethernet PHY chip, and the DDR control circuit is electrically connected with dram chip.One of USB HUB chip is electrically connected by USB3.0 interface with 4K audio-video Senthesizer module, it is electrically connected by USB3.0 interface with 4K-H265 coder module, another USB HUB chip connects smart phone by USB3.0 interface and/or laptop computer, third USB HUB chip are electrically connected with WIFI module and communication module.Rationally, using extensively, safely, conveniently, application market prospect is wide for the design of this control system circuit.

Description

A kind of control system
Technical field
The invention belongs to HD videos, and field is broadcast live, straight more particularly, to a kind of 4K based on high resolution audio and video live broadcast system Broadcast bit stream controller.
Background technique
With the arriving from Media Era, the rapid development of network direct broadcasting technology, function is maked rapid progress.Traditional mobile phone self-timer Live streaming the problems such as resolution ratio, sound quality image quality, is gradually unsatisfactory for the demand of middle and high end live streaming application due to clarity, but traditional Equipment is broadcast live since the device is complicated in broadcast level, and weight is very big, is unable to satisfy the demand of varied especially outdoor live streaming.It is based on The above problem researches and develops a kind of portable 4K high resolution audio and video live broadcast system with regard to most important, and researches and develops one kind and be able to satisfy high voiceless sound The 4K direct-broadcasting code stream transmission control unit (TCU) of video living transmission system is a urgent problem to be solved.
Summary of the invention
In view of this, the present invention is directed to propose a kind of 4K direct-broadcasting code stream based on high resolution audio and video live broadcast system transmits control Device can be handled audio-video code stream.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of 4K direct-broadcasting code stream transmission control unit (TCU) based on high resolution audio and video live broadcast system, including 3 USB HUB chips, 3 Piece USB3.0OTG PHY chip, fpga chip, MPU processor chips, dram chip, ethernet PHY chip, WIFI number pass mould Block and 4G/5G communication module, 3 USB HUB chip respectively pass through a USB3.0OTG PHY chip and fpga chip respectively Electrical connection, one of USB HUB chip are electrically connected by USB3.0 interface with 4K audio-video Senthesizer module, and USB3.0 is passed through Interface is electrically connected with 4K-H265 coder module, another USB HUB chip by USB3.0 interface connect smart phone and/ Or laptop computer, third USB HUB chip are electrically connected with WIFI digital transmission module and 4G/5G communication module, the fpga chip It is electrically connected respectively with MPU processor chips, dram chip, ethernet PHY chip.
Further, the fpga chip include 3 USB3.0 control circuits, DDR control circuit, DMAC control circuit, Ethernet MAC control circuit, the Ethernet MAC control circuit are electrically connected with ethernet PHY chip, the DDR control Circuit processed is electrically connected with dram chip, 3 USB3.0 control circuits respectively respectively with a USB3.0OTG PHY chip phase Even.
Further, the USB HUB chip is the U.S. microchip Products USB5533B, USB3.0OTG PHY Chip is U.S. cypress products C YUSB3014, and fpga chip is the U.S. xilinx product xc5VLC550, MPU processor core Piece is Samsung, South Korea chip product Exynos-4412, and dram chip is Samsung, South Korea chip product K4T1G164QF, Ethernet PHY chip is that U.S. Marvell Products 88E1340S-BAM2, WIFI digital transmission module is that Shanghai Le Xin company produces Product ESP8266,4G/5G communication module is Huawei ME909s, and USB3.0 control circuit is U.S. Synopsys company IP product Dwc_usb3.0_ctl, DDR control circuit are U.S. Synopsys company IP product dwc_ddr23l_mctl, DMAC control electricity Road is that U.S. Synopsys company IP product dwc_amba_dmac, Ethernet MAC control circuit is U.S. Synopsys public affairs Take charge of IP product dwc_ethernet_ahb.
Compared with the existing technology, the 4K direct-broadcasting code stream of the present invention based on high resolution audio and video live broadcast system transmits control Device has the advantage that the present invention provides this 4K direct-broadcasting code stream transmission controls suitable for high resolution audio and video live broadcast system Device handles audio-video code stream, is connected to mutually by WIFI digital transmission module, 4G/5G communication module or wired Ethernet It in networking, accesses to webcast website, ensure that direct-broadcasting code stream efficiency of transmission and transmission quality.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is portable 4K high resolution audio and video live broadcast system schematic diagram.
Fig. 2 is 4K-HDMI extended line transmitter and SOC chip schematic diagram.
Fig. 3 is that 4K-HDMI extends line receiver and SOC chip schematic diagram.
Fig. 4 is that 4K-8 inputs audio-video synthesizer and SOC chip schematic diagram.
Fig. 5 is 4K-H265 encoder and SOC chip schematic diagram.
Fig. 6 is 4K direct-broadcasting code stream transmission control unit (TCU) schematic diagram.
Fig. 7 is power supply module schematic diagram.
Fig. 8 is Rapid-4K signal node composition.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase Mutually combination.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figure 1, a kind of portable 4K high resolution audio and video live broadcast system, including 4K-HDMI extend transmitter, 4K sound view Frequency main broadcaster's console.4K audio-video main broadcaster's console include power supply module, 4K audio-video Senthesizer module and respectively with The 4K-HDMI of 4K audio-video Senthesizer module electrical connection extends receiver module, 4K-H265 coder module, 4K direct-broadcasting code stream Collected high-definition audio-video information is transmitted to 4K-HDMI by HDMI cable by transmission control unit (TCU) module, 4K high-definition camera Extend on transmitter, the 4K-HDMI extends transmitter and extends receiver module by Cat.6 ethernet cable and 4K-HDMI It is connected, 4K-HDMI, which extends transmitter, to carry out lossless compression to audio-video signal and recompile, and utilizes Cat.6 after enhancing power 3 twisted pairs inside ethernet cable are transmitted to 4K audio-video main broadcaster's console, and the 4K-H265 coder module and 4K are straight The electrical connection of bit stream controller module is broadcast, the 4K direct-broadcasting code stream transmission control unit (TCU) module connects upper by USB3.0 cable Machine (smart phone or laptop computer).The collected high-definition audio-video information of 4K high-definition camera can also pass through HDMI cable The 4K audio-video Senthesizer module being transferred directly in 4K audio-video main broadcaster's console.
As shown in fig. 7, the power supply module includes that 220V turns 12V charging circuit, 12V/20AH lithium battery group, 12V turn 220V inverter circuit, this power supply module can be used external 220V AC power source power supply, while being internal 12V/20AH lithium battery Group charging；The alternating current of 220V can also be independently converted by inverter circuit using 12V/20AH lithium battery group, is other 220V City's electric equipment power supply.This power supply module both can be 4K audio-video main broadcaster console power itself, can also taking the photograph for outside Camera, holder, 4K-HDMI extend transmitter power supply, while can also power for smart phone and laptop computer, to adapt to field Living broadcast environment.
This system working principle is as follows:
1. setting up seat in the plane
At live streaming scene, photographer, which fixes or moves, has set up 4K high-definition camera and holder, while finding suitable position Placement location 4K audio-video main broadcaster's console.
2. on line
If 4K high-definition camera is relatively close (within 10 meters) from 4K audio-video main broadcaster console, HDMI wire can be directly used Both connected with direct current supply line；If 4K high-definition camera is farther out (10 meters -200 meters) from 4K audio-video main broadcaster console, just It needs to be added 4K-HDMI and extends transmitter, 4K high-definition camera HDMI wire is first connected to 4K-HDMI extension with direct current supply line Transmitter, then extend transmitter and 4K audio-video main broadcaster's console with Cat6 ethernet line connection 4K-HDMI.USB3.0 is used simultaneously Cable connects 4K audio-video main broadcaster console and smart phone, can also connect 4K audio-video main broadcaster's console with USB3.0 cable And laptop computer
3. power supply
The built-in lithium battery of a 12V/20AH of 4K audio-video main broadcaster console, for 4K audio-video main broadcaster console oneself While body is powered, transmitter power supply can also be extended for the video camera, holder, 4K-HDMI of outside, while may be intelligence Mobile phone and laptop computer power supply, to adapt to field living broadcast environment.4K audio-video main broadcaster console can also use the external city 220V Electricity is internal cell charging and is other equipment power supply.
4. signal processing flow
The collected high-definition audio-video information of 4K high-definition camera is transmitted to through HDMI2.0 agreement by HDMI cable 4K-HDMI extends on transmitter, and 4K-HDMI, which extends transmitter, to carry out lossless compression to audio-video signal and recompile, and enhances 4K audio-video main broadcaster's console is transmitted to using 3 twisted pairs inside Cat.6 after power.
The collected high-definition audio-video information of 4K high-definition camera can also be straight by HDMI cable through HDMI2.0 agreement It connects and is transmitted to 4K audio-video main broadcaster's console.
4K audio-video main broadcaster console can support 4 road 4K-HDMI to extend the direct HDMI input of transmitter input and 4 tunnels.
4K-HDMI extends the signal of transmitter transmitting, connects by the 4K-HDMI extension inside 4K audio-video main broadcaster's console After receiving the decoding of device module, decompression, reduction framing, the signal of HDMI2.0 agreement is reverted to, with the letter of the direct HDMI input in 4 tunnels Number together, the 4K audio-video Senthesizer module being input to inside 4K audio-video main broadcaster's console.
The order that 4K audio-video Senthesizer module will be issued according to host computer (smart phone or laptop computer) carries out sound view The switching of frequency, scaling and splicing, and it is superimposed background, subtitle, figure and image, HDMI2.0 signal all the way is formed, 4K- is output to H265 coder module.
4K-H265 coder module carries out compression H.264/H.265 to the synthesis road Hou Zhe signal, will be compressed Data form file, are written in HDD hard disk by SATA2 agreement.4K direct-broadcasting code stream transmission control unit (TCU) is transmitted data to simultaneously In module.
Data file can directly be passed through the interconnection of Wifi or 4G module connection by 4K direct-broadcasting code stream transmission control unit (TCU) module Net is sent in the server of live streaming website；4K direct-broadcasting code stream transmission control unit (TCU) module can also connect intelligence by USB3.0 interface It can mobile phone or laptop computer.Oneself can be invented USB and extend out pickup camera by 4K direct-broadcasting code stream transmission control unit (TCU) module at this time, Live streaming APP or live streaming software are directly logged on smart phone or laptop computer, can be broadcast live interaction.
5. main broadcaster controls
After 4K direct-broadcasting code stream transmission control unit (TCU) module can also connect smart phone or laptop computer by USB3.0 interface, Broadcast Control APP or Broadcast Control software can also be started, broadcast control is carried out to 4K audio-video main broadcaster console, including control holder turns Dynamic, audio-video source switching, scaling and splicing, and it is superimposed background, subtitle, figure and image；Adjust compression ratio, setting live streaming website Deng operation.
As shown in Fig. 2, it includes 4K-HDMI extended line TX SOC chip, TITAN carrier wave that the 4K-HDMI, which extends transmitter, Transparent transmission module, DC-DC reduction voltage circuit and isolating transformer, 4K high-definition camera penetrate collected high-definition audio-video information HDMI2.0 agreement is transmitted in 4K-HDMI extended line TX SOC chip by HDMI cable, HDMI socket, 4K-HDMI extended line TX SOC chip is by its internal HDMI2.0 decoding circuit, again through space compressor circuit, framer circuit, FEC coding circuit After carrying out 8b/10b transformation, into 10G Serdes transmitting line, the Rapid-4K signal of 3 pairs of high-speed-differentials, warp are so far formed After crossing isolating transformer, it is sent in Cat.6 cable by RJ45 socket；In the 72V DC power-supply circuit of the Cat.6 cable It is mixed with the reverse control signal of BPSK carrier wave all the way, controls signal by having solved RS485 after TITAN carrier wave transparent transmission module, The tripod head equipment outside 4K-HDMI extension transmitter is output to by RS485 socket；The 72V direct current supply of the Cat.6 cable After circuit passes sequentially through RJ45 socket, isolating transformer, DC-DC reduction voltage circuit, 12V DC power supply is exported by direct current jack. The MD65535 of described 4K-HDMI extended line TX SOC chip model Tianjin Yi Hua Microtronic A/S.The TITAN carrier wave is saturating Transmission module is the TTN120500 of Tianjin Yi Hua Microtronic A/S.The DC-DC reduction voltage circuit is the MHB75- of Shanghai Le Ziming latitude 48S12。
As shown in figure 8, one 4 pairs of twisted pairs are shared in the Cat.6 cable, wherein 3 pairs are defined as Rapid-4K signal wire, Another 1 pair is defined as Papid-4K power supply line, this power supply line is 72V DC power supply while being superimposed bpsk carrier signal.
The working principle that this 4K-HDMI extends transmitter is as follows:
1. connection
4K high-definition camera is connected with HDMI cable and 4K-HDMI extends transmitter；With RS485 cable connection holder and 4K-HDMI extends transmitter；Extend transmitter with direct current cable connection 4K high-definition camera, holder and 4K-HDMI；It uses again Cat.6 cable connects 4K-HDMI and extends transmitter and 4K audio-video main broadcaster's console.
2. power supply
4K-HDMI extends 72V direct current supply of the power supply of transmitter on Cat.6 cable, and DC power supply passes through inside DC-DC reduction voltage circuit, be converted into 12V power supply, itself and external equipment use altogether.4K high-definition camera and holder use 4K- HDMI extends the 12V power supply that transmitter provides.
3. audio/video flow
The collected high-definition audio-video information of 4K high-definition camera passes through connection HDMI cable transmission through HDMI2.0 agreement Extend in the 4K-HDMI extended line TX SOC chip of transmitter to 4K-HDMI, this chip is by HDMI2.0 decoding circuit, then After space compressor circuit, framer circuit, FEC coding circuit carry out 8b/10b transformation again, electricity is sent into 10G Serdes Road so far forms the Rapid-4K signal of 3 pairs of high-speed-differentials, after 4K-HDMI extends transmitter isolating transformer, passes through RJ45 Socket is sent in Cat.6 cable.
4.RS485 Reverse Turning Control stream
It is mixed with the reverse control signal of BPSK carrier wave all the way in the 72V DC power-supply circuit of Cat.6, is carried by TITAN RS485 control signal has been solved after wave transparent transmission module, by RS485 socket, the cloud being output to outside 4K-HDMI extension transmitter Platform equipment.
As shown in figure 3, it includes 4K-HDMI extended line RX SOC chip, TITAN that the 4K-HDMI, which extends receiver module, Carrier wave transparent transmission module, DC-DC booster circuit and isolating transformer, Cat.6 cable connect isolating transformer by RJ45 socket, 3 pairs of Rapid-4K differential signals in Cat.6 cable are by being input to 4K-HDMI extended line RX SOC chip after isolating transformer It is interior, circuit is received into 10G Serdes, 10G Serdes receives circuit by restoring Rapid-4K's after Cdr Clock Extraction Data, into row decompression circuit, are reduced into initial intact after 10b/8b transformation, fec decoder circuit, deframer circuitry Audio-video signal, then using HDMI2.0 coding circuit, the HDMI2.0 signal for being encoded into standard is sent to HDMI and patches It is exported on part.The 4K-HDMI extends the power supply of receiver from the 12V DC power supply externally supplied, and 12V DC power supply passes through Direct current jack enters DC-DC booster circuit and is converted into 72V power supply, couples with the carrier signal of TITAN carrier wave transparent transmission module output The power supply signal for forming Rapid-4K afterwards, passes sequentially through isolating transformer and RJ45 socket is sent on Cat.6 cable.External RS-485 signal is input to TITAN carrier wave transparent transmission module by RS485 socket by RS485 cable, passes through TITAN carrier wave transparent transmission mould Block coding generates BPSK carrier wave all the way, is coupled on 72V DC power supply as reverse control signal, the power supply as Rapid-4K Signal passes sequentially through on isolating transformer and RJ45 socket output Cat.6 cable, controls remote equipment as control signal.It is described The MD65536 of 4K-HDMI extended line RX SOC chip model Tianjin Yi Hua Microtronic A/S.The TITAN carrier wave transparent transmission mould Block is the TTN120500 of Tianjin Yi Hua Microtronic A/S.The DC-DC booster circuit is the MHB48- of Shanghai Le Ziming latitude 12S75。
It is as follows that this 4K-HDMI extends receiver module working principle:
1. power supply
4K-HDMI extends the power supply of receiver from the 12V DC power supply externally supplied, is boosted by internal DC-DC Circuit, is converted into 72V power supply, and the power supply signal that Rapid-4K is formed after coupling carrier signal is sent on Cat.6 cable.
2. audio/video flow
3 pairs of Rapid-4K differential signals in Cat.6 cable, by being input to 4K-HDMI extended line after isolating transformer In RX SOC chip, into the reception circuit of 10G Serdes, after 10K Serdes circuit passes through Cdr Clock Extraction, restore The data of Rapid-4K decompress into row after 10b/8b transformation, fec decoder, deframer, are reduced into initial intact Then audio-video signal is encoded using HDMI2.0, the HDMI2.0 signal for being encoded into standard is re-send on HDMI connector Output.
3.Rapid-4K carrier signal generates
Externally input RS-485 signal generates BPSK carrier wave all the way by TITAN carrier wave transparent transmission module coding, as anti- It is coupled on 72V DC power supply to control signal, the power supply signal as Rapid-4K exports on Cat.6 cable, as control Signal controls remote equipment.
As shown in figure 4, the 4K audio-video Senthesizer module includes 4K audio-video synthesizer SOC chip, serial FLASH core Piece and dram chip, the 4K audio-video synthesizer SOC chip include 8 HDMI PHY RX circuits, audio/video flow switching array Circuit, Scale image scaling circuit, multilayer picture optical supercircuit, osd circuit, cpu circuit, USB controller circuit, USB PHY Circuit, DDR controller circuit and HDMI PHY TX circuit, 8 HDMI PHY RX circuit switch with audio/video flow respectively Array circuit electrical connection, the audio/video flow switching array circuit are electrically connected with Scale image scaling circuit, the Scale figure It is electrically connected as scaling circuit with multilayer picture optical supercircuit, the multilayer picture optical supercircuit is electrically connected with HDMI PHY TX circuit It connects, HDMI PHY TX circuit is exported picture by HDMI cable；The cpu circuit is electric with audio/video flow switching array respectively Road, DDR controller circuit, USB controller circuit, serial FLASH chip electrical connection, the DDR controller circuit respectively with Dram chip, Scale image scaling circuit, osd circuit electrical connection, the osd circuit are electrically connected with multilayer picture optical supercircuit, The USB PHY circuit is electrically connected with USB controller circuit.The process of the cpu circuit control whole image processing, host computer The movement of instruction control CPU can be issued by USB PHY circuit and USB controller circuit.
The serial FLASH chip is U.S. SST company chip product SST25VF040, and dram chip is that South Korea's Samsung is public Chip product K4T1G164QF is taken charge of, HDMI PHY RX circuit is U.S. Synopsys company IP product dwc_hdmi14_rx_ Phy, it is Tianjin Yi Hua Microtronic A/S IP product mdc_audio_sw, Scale image scaling that audio/video flow, which switches array circuit, Circuit is Tianjin Yi Hua Microtronic A/S IP product mdc_video_scale, and multilayer picture optical supercircuit is Tianjin benefit Hua Wei electricity Subsidiary IP product mdc_multi_pic, osd circuit are Tianjin Yi Hua Microtronic A/S IP product mdc_video_osd, CPU Circuit is Britain ARM company IP product ARM Cortex A5, and USB controller circuit is U.S. Synopsys company IP product Dwc_usb3.0_ctl, USB PHY circuit are U.S. Synopsys company IP product dwc_usb3.0_otg_phy, DDR control Device circuit is that Synopsys company IP product dwc_ddr23l_mctl, HDMI PHY TX circuit in the U.S. is U.S. Synopsys public affairs Take charge of IP product dwc_hdmi 14_tx_phy.
This 4K audio-video Senthesizer module working principle is as follows:
This 4K audio-video Senthesizer module has 8 road HDMI input and 1 road HDMI output.
1. signal flow: this 4K audio-video Senthesizer module can support the input of 8 road HDMI2.0 signals, by switching battle array Column, can arbitrarily select putting in order for this 8 road signal, and lossless 8 Scale of feeding are scaled in circuit paths.Each channel Scale scales circuit can carry out 1,2,4,8,16 times of diminution to the image of input, or carry out to image local, 1,2,4,8, 16 times of amplification.Picture signal that treated is output in subsequent more picture supercircuits.More picture supercircuits, can be with Support the superposition processing of up to 8 layer image signals, every tomographic image all supports the selection of 256 grades of transparencies.1 layer of monochrome is supported simultaneously Background and 1 tomographic image background.Support OSD layers of 2 layers of text.For there is the image of personage, people is can be set in more picture supercircuits Object identification eliminates function with background, this partial circuit can choose character image profile automatically, and be set as transparent to background, then It chooses any figure layer to be overlapped, both can reach the effect of replacement background.More picture supercircuits can also carry out image spelling It connects, realizes the function of more pictures or picture-in-picture.The picture that the image handled well can be spliced into a 4K again is output to HDMI In TX PHY circuit, it is output to outside.The process of whole image processing, is controlled by CPU and is operated, and host computer can pass through USB PHY and USB controller issue the movement of instruction control CPU.The caching of each image is connected to outside piece by DDR controller On dram chip.The program of CPU is stored in the FLASH chip outside piece, and when starting, which reads in DRAM, to be executed.
As shown in figure 5, the 4K-H265 coder module include 4K-H265 coding SOC chip, serial FLASH and DRAM, the 4K-H265 coding SOC chip include HDMI PHY RX circuit, H.265 coding circuit, DMAC, CPU, USB control Device, USB PHY circuit, SATA controller, SATA PHY circuit, DDR controller, the DMAC respectively with CPU, USB controller, SATA controller, DDR controller, H.265 coding circuit is electrically connected, and the H.265 coding circuit includes DWT translation circuit, ME/ MC estimating motion and compensation circuit and VLC variable length code circuit, picture signal are input to H.265 coding circuit, pass through DWT Translation circuit, ME/MC estimating motion and compensation circuit, VLC variable length code circuit form video code flow H.265.Serially FLASH is electrically connected with CPU, and DRAM is electrically connected with DDR controller, and audio-video signal is input to 4K-H265 by HDMI2.0 and encodes It is divided into picture signal and voice signal after the HDMI PHY RX circuit of SOC chip, picture signal is input to H.265 coding circuit Generate video code flow H.265；Voice signal is input to CPU, carries out Software Compression coding by CPU, generates audio code H.265 Stream, then H.265 audio-video code stream is combined by CPU, the H.265 audio-video code stream pass sequentially through DMAC, USB controller/ SATA controller, USB PHY circuit/SATA PHY circuit are transmitted to the channel USB3.0/channel SATA2.0.H.265 the sound view Frequency code stream is stored in HDD hard disk by SATA2.0 write-in, while H.265 audio-video code stream is transmitted also by the channel USB3.0 To outside controller.4K-H265 coding SOC chip carries out various parameters configuration by CPU and system controls, by USB3,0 Channel is communicated with external host computer.The caching of image is connected on the dram chip outside chip by DDR controller, CPU Program be stored in the FLASH chip outside chip, when starting, which reads in DRAM, to be executed.The 4K-H265 encodes SOC chip Various parameters configuration and system control are carried out by CPU, by USB3,0 channel is communicated with external host computer.
The HDMI PHY RX circuit is U.S. Synopsys company IP product dwc_hdmi14_rx_phy, is H.265 compiled Code circuit is Tianjin Yi Hua Microtronic A/S IP product MCDCV550, and DMAC is U.S. Synopsys company IP product dwc_ Amba_dmac, CPU are Britain ARM company IP product ARM Cortex A5, and USB controller is U.S. Synopsys company IP production Product dwc_usb3.0_ctl, USB PHY circuit is U.S. Synopsys company IP product dwc_usb3.0_otg_phy, SATA control Device processed is that U.S. Synopsys company IP product dwc_sata_ahost, SATA PHY circuit is that U.S. Synopsys company IP is produced Product dwc_sata2phy, DDR controller are that U.S. Synopsys company IP product dwc_ddr23l_mctl, DWT translation circuit is Tianjin Yi Hua Microtronic A/S IP product mdc_dwt, ME/MC estimating motion and compensation circuit are Tianjin Yi Hua Microtronic A/S IP Product
Mdc_memc, VLC variable length code circuit are Tianjin Yi Hua Microtronic A/S IP product mdc_lvc.
This 4K-H265 coder module working principle is as follows:
Audio-video signal enters the HDMI PHY RX circuit that 4K-H265 encodes SOC chip by HDMI2.0, is divided into image Signal and voice signal, picture signal enter H.265 coding circuit, by DWT translation circuit, ME/MC estimating motion and compensation Circuit, VLC variable length code circuit form video code flow H.265；Voice signal enters CPU, carries out Software Compression by CPU Coding, forms audio code stream H.265.Audio-video code stream is combined by CPU again, is then respectively transmitted to code stream by DMAC The channel USB3.0 and the channel SATA2.0.H.265 audio-video code stream is stored in HDD hard disk by SATA2.0 write-in, simultaneously H.265 audio-video code stream is transmitted to outside controller also by the channel USB3.0.
As shown in fig. 6, the 4K direct-broadcasting code stream transmission control unit (TCU) module includes 3 USB HUB chips, 3 USB3.0OTG PHY chip, fpga chip, MPU processor chips, dram chip, ethernet PHY chip, WIFI digital transmission module and 4G/5G communication Module, 3 USB HUB chip is respectively electrically connected by a USB3.0OTG PHY chip with fpga chip respectively, wherein one A USB HUB chip is electrically connected by USB3.0 interface with 4K audio-video Senthesizer module, and USB3.0 interface and 4K-H265 are passed through Coder module electrical connection, another USB HUB chip connect smart phone/laptop computer, third by USB3.0 interface USB HUB chip is electrically connected with WIFI digital transmission module and 4G/5G communication module, the fpga chip respectively with MPU processor core Piece, dram chip, ethernet PHY chip electrical connection.The fpga chip includes 3 USB3.0 control circuits, DDR control electricity Road, DMAC control circuit, Ethernet MAC control circuit, the Ethernet MAC control circuit and ethernet PHY chip Electrical connection, the DDR control circuit are electrically connected with dram chip.
The USB HUB chip is that U.S. microchip Products USB5533B, USB3.0OTG PHY chip is beauty State cypress products C YUSB3014, fpga chip are that U.S. xilinx product xc5VLC550, MPU processor chips are South Korea Samsung chip product Exynos-4412, dram chip are Samsung, South Korea chip product K4T1G164QF, Ethernet PHY chip is that U.S. Marvell Products 88E1340S-BAM2, WIFI digital transmission module is the happy prosperous Products in Shanghai ESP8266,4G/5G communication module are Huawei ME909s, and USB3.0 control circuit is U.S. Synopsys company IP product dwc_ Usb3.0_ctl, DDR control circuit are that U.S. Synopsys company IP product dwc_ddr23l_mctl, DMAC control circuit is U.S.'s Synopsys company IP product dwc_amba_dmac, Ethernet MAC control circuit is U.S. Synopsys company IP Product dwc_ethernet_ahb.
This 4K direct-broadcasting code stream transmission control unit (TCU) module working principle is as follows:
USB1 mouthfuls and USB2 mouthfuls are separately connected 4K audio-video synthesizer and 4K-H265 encoder.
1. signal flow
Compressed code stream is entered in this controller by USB2 mouthfuls, is passed data by DDR control circuit by DMAC It is sent in dram chip and caches.MPU processor operates above android operating system, code stream can be exported by 2 kinds of modes Live streaming software in, a kind is by smart phone, and another a kind is laptop computer.This controller module can also directly be supported to be broadcast live Website logs in, and the information of webcast website can be set (smart phone and laptop computer with smart phone or laptop computer Do not support simultaneously), internet is then directly connected to by WIFI digital transmission module, 4G/5G communication module or wired Ethernet On, carry out the direct access to webcast website.The dram chip that the caching of each image is connected to outside piece by DDR controller On.The program of CPU is stored in the FLASH chip outside piece, and when starting, which reads in DRAM, to be executed.
The control command to 4K audio-video synthesizer is sent in USB1 oral instructions；The control to 4K-H265 encoder is sent in USB2 oral instructions Order, while receiving live streaming audio-video code stream data；USB3 oral instructions send smart phone to connect the control command of whole system simultaneously Receive live streaming audio-video code stream data；USB4 oral instructions send laptop computer to the control command of whole system, while receiving live streaming sound view Frequency code flow data.
This 4K direct-broadcasting code stream transmission control unit (TCU) module data file can directly be passed through WIFI digital transmission module or 4G/5G leads to The internet of news module connection is sent in the server of live streaming website；4K direct-broadcasting code stream transmission control unit (TCU) module can also pass through USB3.0 interface connects smart phone or laptop computer.4K direct-broadcasting code stream transmission control unit (TCU) module can invent oneself at this time USB extends out pickup camera, and live streaming APP or live streaming software are directly logged on smart phone or laptop computer, can be carried out straight Broadcast interaction.
2. main broadcaster controls
This 4K direct-broadcasting code stream transmission control unit (TCU) module can also connect smart phone or laptop computer by USB3.0 interface Afterwards, Broadcast Control APP or Broadcast Control software can also be started, broadcast control, including control holder are carried out to 4K audio-video main broadcaster console Rotation, audio-video source switching, scaling and splicing, and it is superimposed background, subtitle, figure and image；Adjust compression ratio, setting broadcasting station The operation such as point.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.

Claims (5)

1. a kind of 4K direct-broadcasting code stream transmission control unit (TCU) based on high resolution audio and video live broadcast system, it is characterised in that: including 3 USB HUB chip, 3 USB3.0OTG PHY chips, fpga chip, MPU processor chips, dram chip, ethernet PHY chip, WIFI digital transmission module and 4G/5G communication module, 3 USB HUB chip respectively pass through a USB3.0OTG PHY chip respectively It is electrically connected with fpga chip, the fpga chip is electrically connected with MPU processor chips, dram chip, ethernet PHY chip respectively It connects.
2. a kind of 4K direct-broadcasting code stream transmission control unit (TCU) based on high resolution audio and video live broadcast system according to claim 1, Be characterized in that: the fpga chip includes 3 USB3.0 control circuits, DDR control circuit, DMAC control circuit, Ethernet MAC control circuit, the Ethernet MAC control circuit are electrically connected with ethernet PHY chip, the DDR control circuit with Dram chip electrical connection, 3 USB3.0 control circuits are respectively electrically connected with a USB3.0OTG PHY chip respectively.
3. a kind of 4K direct-broadcasting code stream transmission control unit (TCU) based on high resolution audio and video live broadcast system according to claim 1 or 2, It is characterized by: one of USB HUB chip is electrically connected by USB3.0 interface with 4K audio-video Senthesizer module, pass through USB3.0 interface is electrically connected with 4K-H265 coder module, another USB HUB chip connects intelligent hand by USB3.0 interface Machine and/or laptop computer, third USB HUB chip are electrically connected with WIFI digital transmission module and 4G/5G communication module.
4. a kind of 4K direct-broadcasting code stream transmission control unit (TCU) based on high resolution audio and video live broadcast system according to claim 1, Be characterized in that: the WIFI digital transmission module is the happy prosperous Products ESP8266 in Shanghai, and the 4G/5G communication module is Huawei ME909s。
5. a kind of 4K direct-broadcasting code stream transmission control unit (TCU) based on high resolution audio and video live broadcast system according to claim 1, Be characterized in that: the fpga chip is U.S. xilinx product xc5VLC550.
CN201711462667.3A 2017-12-28 2017-12-28 A kind of control system Pending CN109981998A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711462667.3A CN109981998A (en) 2017-12-28 2017-12-28 A kind of control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711462667.3A CN109981998A (en) 2017-12-28 2017-12-28 A kind of control system

Publications (1)

Publication Number Publication Date
CN109981998A true CN109981998A (en) 2019-07-05

Family

ID=67074920

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711462667.3A Pending CN109981998A (en) 2017-12-28 2017-12-28 A kind of control system

Country Status (1)

Country Link
CN (1) CN109981998A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111010541A (en) * 2019-12-11 2020-04-14 重庆山淞信息技术有限公司 Video processing module based on FPGA and compression processor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111010541A (en) * 2019-12-11 2020-04-14 重庆山淞信息技术有限公司 Video processing module based on FPGA and compression processor

Similar Documents

Publication Publication Date Title
CN207869239U (en) A kind of portable 4K high resolution audio and videos live broadcast system
CN103338354A (en) Small-sized video encoding equipment, and video capture, coding and transmission system
CN101511006A (en) Method for monitoring network audio and video, and network hard disk videocorder using the method
CN105324911B (en) Charging unit and its operating method
CN205069079U (en) Multi -functional LED display screen control system
CN207869252U (en) 4K direct-broadcasting code stream transmission control unit (TCU)s based on high resolution audio and video live broadcast system
CN104301657A (en) Conference television terminal and auxiliary flow data access method thereof
CN102957888A (en) Wireless fidelity (WiFi)-communication-based portable audio and video transmission and recording device
CN207869296U (en) 4K-HDMI based on high resolution audio and video live broadcast system extends receiver
CN207869253U (en) 4K audio and video main broadcaster's consoles based on high resolution audio and video live broadcast system
CN207869295U (en) 4K-HDMI based on high resolution audio and video live broadcast system extends transmitter
CN207869240U (en) 4K-8 audio and video synthesizers based on high resolution audio and video live broadcast system
CN109981998A (en) A kind of control system
CN109982001A (en) A kind of synthesis system
CN109982089A (en) A kind of coded system
CN109982000A (en) A kind of live streaming platform
CN101702760A (en) Integrated network hard disk video recorder
CN206313908U (en) A kind of high definition movable video monitoring equipment
CN207869286U (en) 4K-H265 encoders based on high resolution audio and video live broadcast system
CN109982002A (en) A kind of reception system
CN109981999A (en) A kind of control platform
CN109982133A (en) A kind of transmission system
CN106406538A (en) Head-mounted display equipment hardware module with interactive function
CN103198822B (en) A kind of karaoke broadcast control equipment with wireless push function
CN205812165U (en) A kind of live box of panoramic video

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20190705

WD01 Invention patent application deemed withdrawn after publication