CN112804470A - Wireless transmission receiving and transmitting system without compressed video - Google Patents
Wireless transmission receiving and transmitting system without compressed video Download PDFInfo
- Publication number
- CN112804470A CN112804470A CN202110050491.0A CN202110050491A CN112804470A CN 112804470 A CN112804470 A CN 112804470A CN 202110050491 A CN202110050491 A CN 202110050491A CN 112804470 A CN112804470 A CN 112804470A
- Authority
- CN
- China
- Prior art keywords
- module
- radio frequency
- receiving
- transmitting
- frequency link
- 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
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
- H04N7/147—Communication arrangements, e.g. identifying the communication as a video-communication, intermediate storage of the signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/90—Non-optical transmission systems, e.g. transmission systems employing non-photonic corpuscular radiation
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses a wireless transmission transceiving system without compressed video, which comprises a high-definition uncompressed video transmitting unit and a high-definition uncompressed video receiving unit, wherein the high-definition uncompressed video transmitting unit is connected with the high-definition uncompressed video receiving unit; the high-definition non-compression video transmitting unit is sequentially connected with an information source acquisition module, a transmitting signal processing module and a transmitting radio frequency link system; the high-definition non-compressed video receiving unit comprises a video display module, a received signal processing module and a received radio frequency link system which are connected in sequence; the transmitting radio frequency link system is connected with the receiving radio frequency link system through a wireless radio frequency signal. The invention combines a terahertz broadband wireless communication device with a non-compressed video acquisition device, improves the effectiveness and reliability of the non-compressed video wireless transmission by utilizing the characteristics of large bandwidth and low time delay of terahertz communication, and provides a feasible technical means for the wireless transmission of the non-compressed video.
Description
Technical Field
The invention relates to the technical field of video transmission and wireless communication, in particular to a wireless transmission receiving and transmitting system without compressed video.
Background
In recent years, various high-speed transmission requirements of high-definition videos are on the rise, users have higher and higher requirements on high-definition movie television service quality, and the requirements on transmission of high-definition television signals without compression or with low compression ratio are also increased. Uncompressed high definition video signals have high stream data rates, and usually adopt a wired transmission means, and wireless transmission is still limited by the data rate requirement required by uncompressed video transmission at present. For example, the uncompressed data rate of the currently common commercial Full high definition (Full-HD) is 1920x1080 (resolution) x25 (frame rate) x10 (bit width bits) x3(RGB three primary colors), i.e. 1.56Gbps, the higher 4K high definition resolution is 3840 x 2160 resolution of the Ultra High Definition Television (UHDTV) standard, and the uncompressed data rate is 6.22 Gbps; and the signal rate of the high-definition 3D movie television point is twice of the signal rate, namely 3D-Full-HD is 3.12Gbps, and 3D-UHDTV is 12.44 Gbps.
High-rate, hundred gigabit data transmission currently relies primarily on fiber optic communication, which is less than adequate in some temporary mobile applications. For example: in high definition live broadcasting of a sports event, the position of a camera needs to be constantly changed by athletes, and thus, it is necessary to realize a mobile transmission of a high-speed video signal from the camera to a television production center. In such application occasions, it is difficult to lay an optical fiber line temporarily, and the conventional microwave point-to-point communication equipment cannot support the data transmission rate of several gigabits per second or even hundreds of gigabits per second.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: how to solve the problem of uncompressed video transmission that wired communication or microwave communication are difficult to be competent, provide a wireless transmission receiving and dispatching system of uncompressed video, this system is based on solid-state semiconductor device, what adopted is the terahertz high-speed simplex transmission technology route of "secondary mixing and signal amplification after baseband modulation demodulation", can realize wireless transmission 4K uncompressed video.
The invention solves the technical problem through the following technical scheme, and the invention comprises a high-definition uncompressed video transmitting unit and a high-definition uncompressed video receiving unit; the high-definition non-compression video transmitting unit comprises an information source acquisition module, a transmitting signal processing module and a transmitting radio frequency link system which are sequentially connected; the high-definition non-compressed video receiving unit comprises a video display module, a received signal processing module and a received radio frequency link system which are connected in sequence; the transmitting radio frequency link system is connected with the receiving radio frequency link system through a wireless radio frequency signal.
Furthermore, the information source acquisition module in the high-definition uncompressed video transmitting unit comprises an uncompressed video optical collector; the transmission signal processing module comprises a transmission baseband module, a modulation module and a terahertz transmission main control module; the terahertz transmission radio frequency link system comprises a complete terahertz transmission radio frequency link, a transmission power module and a transmission antenna.
Furthermore, the high-definition uncompressed video receiving unit comprises a video display module, a received signal processing module and an terahertz receiving radio frequency link system. Wherein the video display module comprises a non-compressed video display; the receiving signal processing module comprises a receiving baseband module, a demodulation module and a receiving main control module; the terahertz receiving radio frequency link system comprises a complete terahertz receiving radio frequency link, a receiving power supply module and a receiving antenna.
Furthermore, the input end of the transmitting signal processing module is connected with the output end of the information source acquisition module through an SDI interface, and the output end of the transmitting signal processing module is connected with the input end of the terahertz transmitting radio frequency link through an SMA interface. The input end of the transmission signal processing module is connected with the output end of the information source acquisition module, and the output end of the transmission signal processing module is connected with the input end of the terahertz transmission radio frequency link system.
Furthermore, the output end of the received signal processing module is connected with the input end of the video display module through an HDMI interface, the input end of the received signal processing module is connected with the output end of the terahertz receiving radio frequency link system through an SMA interface, and the terahertz transmitting radio frequency link is wirelessly connected with the terahertz receiving radio frequency link through an antenna.
Furthermore, the source acquisition module outputs a non-compressed original bit data stream in a RAW format or a ProRes format through an HD-SDI, a 3G-SDI or a 12G-SDI protocol SDI cable, the video display module inputs a video display stream through an HDMI cable, and after the video display stream is processed by the transmitting signal processing module and the receiving signal processing module, the format of the video display stream does not correspond to the format of a transmitting end, so that the video processing is facilitated.
Furthermore, the signals which are processed by the terahertz transmitting and receiving signal processing module in a baseband mode and output by the SMA in a modulation and demodulation mode are intermediate-frequency signals.
Furthermore, the terahertz transmitting and receiving signal processing module adopts an FPGA chip which can process high-definition uncompressed signals in real time, so that the time delay caused by signal processing is reduced.
Furthermore, the carrier frequency of the antenna port of the terahertz transmission radio frequency link system for transmitting radio frequency signals is Ka wave band, E wave band, W wave band, 140GHz, 220GHz, 340GHz and 660 GHz. The carrier frequency of the antenna port of the terahertz receiving radio frequency link system corresponding to the terahertz receiving radio frequency link system is Ka waveband, E waveband, W waveband, 140GHz, 220GHz, 340GHz and 660GHz which are matched with the transmitting end.
Furthermore, when no compression signal is transmitted in a long distance, the transmission distance can be remarkably increased after the Cassegrain antenna is carried; when no compression signal is transmitted in a long distance, channel coding units and channel decoding units including ARQ (automatic repeat request), FEC (forward error correction code) and HEC (hybrid error correction code) are respectively added in the transmitting signal processing module and the receiving signal processing module, so that the reliability of the system can be obviously improved.
Compared with the prior art, the invention has the following advantages: the terahertz broadband wireless communication device is combined with the uncompressed video acquisition device, the characteristics of large bandwidth and low time delay of terahertz communication are utilized, the effectiveness and the reliability of uncompressed video wireless transmission are improved, and a feasible technical means for wirelessly transmitting the uncompressed video is provided.
Drawings
Fig. 1 is a block diagram of a high definition uncompressed video transmitting unit according to an embodiment of the present invention;
fig. 2 is a block diagram of a high definition uncompressed video receiving unit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an internal signal processing scheme of a transmission signal processing module according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an internal signal processing scheme of a received signal processing module according to an embodiment of the present invention.
Detailed Description
The following examples are given for the detailed implementation and specific operation of the present invention, but the scope of the present invention is not limited to the following examples.
As shown in fig. 1 and 2, the present embodiment provides a technical solution: a wireless transmission system of high-definition uncompressed video comprises a high-definition uncompressed video transmitting unit and a high-definition uncompressed video receiving unit. The transmitting unit of the high-definition uncompressed video comprises an information source acquisition module, a terahertz transmitting signal processing module and a terahertz transmitting radio frequency link system. The receiving unit of the high-definition uncompressed video comprises a video display module, a terahertz receiving signal processing module and a terahertz receiving radio frequency link system. And the high-definition uncompressed video transmitting unit and the high-definition uncompressed video receiving unit are transmitted through wireless radio frequency signals.
An information source acquisition module of the high-definition uncompressed video transmitting unit is an uncompressed video optical acquisition device; the transmitting signal processing module comprises a transmitting baseband module, a modulation module and a transmitting main control module; the terahertz emission radio frequency link system comprises a complete terahertz emission radio frequency link, an emission power supply module and an emission antenna. The video display module of the high-definition uncompressed video receiving unit comprises an uncompressed video display; the receiving signal processing module comprises a receiving baseband module, a demodulation module and a receiving main control module; the terahertz receiving radio frequency link system comprises a complete terahertz receiving radio frequency link, a receiving power supply module and a receiving antenna.
The transmitting main control module and the receiving main control module are two sub-modules of the main control subsystem, and the transmitting power supply module and the receiving power supply module are two sub-modules of the power supply subsystem.
The input end of the transmitting signal processing module is connected with the output end of the information source acquisition module through an SDI interface, and the output end of the transmitting signal processing module is connected with the input end of the terahertz transmitting radio frequency link system through an SMA interface. The output end of the received signal processing module is connected with the input end of the video display module through an HDMI interface, the input end of the received signal processing module is connected with the output end of the terahertz receiving radio frequency link system through an SMA interface, and the terahertz transmitting radio frequency link system is wirelessly connected with the terahertz receiving radio frequency link system through an antenna.
The transmission radio frequency link in the terahertz transmission radio frequency link system is considered integrally in design. In order to further reduce risks, factors such as functions, internal frequency planning, difficulty and easiness in circuit implementation, detectability and the like of the transmitting radio frequency link are considered, the transmitting radio frequency link is broken in concrete implementation and is divided into four detachable sub-modules, and the sub-modules are sequentially connected through radio frequency coaxial cables and standard waveguide interfaces to form the integral transmitting radio frequency link. Therefore, the functional modules in the terahertz transmission radio frequency link system comprise a frequency synthesis module, a power supply module, a control module and a transmission radio frequency link, wherein the transmission radio frequency link comprises four transmission sub-modules including a first-stage up-conversion sub-module, a second-stage up-conversion sub-module, a power amplification sub-module and a transmission filter.
Similarly, according to the thought, the receiving radio frequency link in the terahertz receiving radio frequency link system is broken and divided into four detachable sub-modules, and the sub-modules are connected by using radio frequency coaxial cables and standard waveguide interfaces to form an integral receiving radio frequency link. The terahertz receiving radio frequency link system comprises functional modules inside a terahertz receiving radio frequency link system, a frequency synthesis module, a power supply and control module and a receiving radio frequency link, wherein the receiving radio frequency link comprises four receiving sub-modules including a receiving filter, a W-band low-noise amplifier sub-module, a first-stage down-conversion sub-module and a second-stage down-conversion sub-module.
The transmitting signal processing module and the receiving signal processing module both use XCVU9P and Zynq-7045 of Xilinx company, in the system, XCVU9P mainly regulates and converts the high-definition video in a serial-parallel mode, and carries out segmentation combination, LDPC coding, scrambling, framing and interweaving on each path of parallel data after regulation; performing constellation mapping and forming filtering on the parallel signals subjected to encoding framing and the like, and sending the parallel signals into a DA chip through a high-speed JESD204B high-speed serial interface for up-conversion and filtering; the DDR interface control unit is provided, and necessary cache is performed in the processing process by using a DDR chip. The function realized by Zynq-7045 is as follows: the linux operating system is provided with a TCP/IP protocol stack, is connected with the upper computer through an RJ45 interface and is used for feeding back the state information of each node of the processing board of the transmitter; the system is provided with an HDMI interface, receives a high-definition HDMI video signal through a PS, and sends a video stream signal to an FPGA through a PL (programmable gate array) end high-speed GTX (GTX) interface for subsequent processing; the system is provided with an RS422 interface and receives parameter configuration of an upper computer; and (4) carrying out algorithm parameter configuration on the FPGA processing logic through a GPIO interface. In the system, two FPGAs are respectively provided with a Flash chip. Wherein, XCVU9P is provided with two Flash chips; zynq-7045 is provided with two Flash chips. The Flash chip communicates with the FPGA through an SPI or QPI protocol.
As shown in fig. 3 and 4, in the transmit signal processing module, the video original bit stream information data input by the source acquisition module is sent to the FPGA chip in the transmit signal processing module through the SDI transmission line. For the data stream processing of high-speed communication, the working frequency of an FPGA/ASIC device is limited, a processing algorithm needs to adopt a parallelization design, M shunt is carried out according to an information data block (IB) after caching, parallel processing is carried out, and an option for internally generating a test sequence is provided. Inserting a transmission frame header (TS) into each information data block of each path, scrambling, and sending to an LDPC encoder; sending the M paths of coded data to a parallelized MQAM modulation mapping and forming filtering module to generate parallelized baseband modulation data, designing options of adding white noise data and generating a single carrier inside, and being used for equipment self-checking; then through a parallel-to-serial port high-speed interface of the FPGA, the former digital processing function module comprises a modulation module, a demodulation module and a main control module which are all realized on the FPGA; the high-speed interface of the FPGA transmits the IQ complex data to the intermediate-frequency DAC daughter board; the intermediate frequency DAC sub-board tunes the IQ baseband data to the required intermediate frequency, converts the IQ baseband data into an analog signal and sends out a low-frequency-band signal.
In a received signal processing module, an input low-frequency-band signal firstly enters an ADC daughter board, and is converted into an I/Q orthogonal baseband signal through an intermediate frequency orthogonal frequency conversion sampling module, and IQ sampling is completed; the sampled IQ baseband signal enters an FPGA, and symbol data are recovered through parallel forming filtering, frame header capturing, channel equalization, clock synchronization and carrier synchronization processing; then, the recovered symbol data is sent to an LDPC decoder descrambler of N paths to recover an information data block (IB); then, the original video bit stream information stream is output to a video display module through a data combining module; while a sample of the received information may be stored for self-test testing.
The received signal processing module adopts an intermediate frequency orthogonal down-conversion scheme, and the main consideration is to reduce the sampling rate of the ADC and the requirement of high-intermediate frequency sampling, so that when an imported ADC chip is forbidden, a domestic radio frequency device and the ADC chip are adopted for replacing the ADC chip, and the performance of the ADC chip is slightly reduced due to the limit of a domestic chip process. Of course, if the received signal processing module adopts intermediate frequency direct sampling, it is very convenient, and only an ADC chip with a proper sampling rate needs to be selected. Similarly, if the high-speed DAC chip at the transmitting end is forbidden, the receiving signal processing module provides an alternative intermediate frequency up-conversion scheme, so that the solution is conveniently replaced by a domestic radio frequency device and the DAC chip.
By adopting the technical scheme, carriers of high-speed uncompressed RAW format or ProRes format original bit stream video signals and terahertz waves including Ka-band, E-band, W-band, 140GHz, 220GHz, 340GHz and 660GHz frequency band carriers are modulated, so that a single signal processing module board card transmits signals up to 10Gbps, can support uncompressed 4K and 60Hz high-definition video signals at the highest, and is compatible with lower-resolution 1080P and 720P high-definition video formats.
To sum up, the wireless transmission transceiving system without the compressed video combines the terahertz broadband wireless communication device with the uncompressed video acquisition device, utilizes the characteristics of terahertz communication such as large bandwidth and low time delay, improves the effectiveness and reliability of uncompressed video wireless transmission, and provides a feasible technical means for wirelessly transmitting the uncompressed video.
Although embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A wireless transmission transceiving system without compressed video is characterized in that: the system comprises a high-definition uncompressed video transmitting unit and a high-definition uncompressed video receiving unit; the high-definition non-compression video transmitting unit comprises an information source acquisition module, a transmitting signal processing module and a transmitting radio frequency link system which are sequentially connected; the high-definition non-compressed video receiving unit comprises a video display module, a received signal processing module and a received radio frequency link system which are connected in sequence; the transmitting radio frequency link system is connected with the receiving radio frequency link system through a wireless radio frequency signal.
2. The wireless transmission transceiving system without compressed video according to claim 1, wherein: the wireless transmission transceiving system further comprises a main control subsystem, and the received signal processing module, the received radio frequency link system, the transmitted signal processing module, the received signal processing module and the received radio frequency link system are respectively connected with the main control subsystem.
3. The wireless transmission transceiving system without compressed video according to claim 2, wherein: the transmission signal processing module comprises a transmission baseband module, a modulation module and a transmission main control module, wherein the transmission baseband module is arranged in the modulation module, and the transmission main control module is respectively connected with the transmission baseband module and the modulation module and is connected with the main control subsystem.
4. The wireless transmission transceiving system without compressed video according to claim 3, wherein: the receiving signal processing module comprises a receiving baseband module, a demodulation module and a receiving main control module, wherein the receiving baseband module is arranged in the demodulation module, and the receiving main control module is respectively connected with the receiving baseband module and the demodulation module and is connected with the main control subsystem.
5. The wireless transmission transceiving system without compressed video according to claim 4, wherein: the transmitting radio frequency link system comprises a transmitting radio frequency link, a transmitting power supply module and a transmitting antenna, wherein the transmitting power supply module is respectively connected with the transmitting radio frequency link and the transmitting antenna, and the transmitting power supply module is connected with the transmitting antenna.
6. The wireless transmission transceiving system without compressed video according to claim 5, wherein: the transmitting radio frequency link comprises a first-stage up-conversion sub-module, a second-stage up-conversion sub-module, a power amplifier sub-module and the transmitting filter, wherein the first-stage up-conversion sub-module, the second-stage up-conversion sub-module, the power amplifier sub-module and the transmitting filter are connected in sequence.
7. The wireless transmission transceiving system without compressed video according to claim 6, wherein: the receiving radio frequency link system comprises a receiving radio frequency link, a receiving power supply module and a receiving antenna, wherein the receiving power supply module is respectively connected with the receiving radio frequency link and the receiving antenna, and the receiving power supply module is connected with the receiving antenna.
8. The wireless transmission transceiving system without compressed video according to claim 7, wherein: the receiving radio frequency link comprises a receiving filter, a W-band low-noise amplifier sub-module, a first-stage down-conversion sub-module and a second-stage down-conversion sub-module, and the receiving filter, the W-band low-noise amplifier sub-module, the first-stage down-conversion sub-module and the second-stage down-conversion sub-module are sequentially connected.
9. The wireless transmission transceiving system without compressed video according to claim 8, wherein: the transmitting antenna is connected with the receiving antenna through a wireless radio frequency signal.
10. The wireless transmission transceiving system without compressed video according to claim 9, wherein: the signals which are processed by the transmitting signal processing module and the receiving signal processing module to complete baseband processing, modulation and demodulation and output are intermediate frequency signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110050491.0A CN112804470A (en) | 2021-01-14 | 2021-01-14 | Wireless transmission receiving and transmitting system without compressed video |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110050491.0A CN112804470A (en) | 2021-01-14 | 2021-01-14 | Wireless transmission receiving and transmitting system without compressed video |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112804470A true CN112804470A (en) | 2021-05-14 |
Family
ID=75810921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110050491.0A Pending CN112804470A (en) | 2021-01-14 | 2021-01-14 | Wireless transmission receiving and transmitting system without compressed video |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112804470A (en) |
-
2021
- 2021-01-14 CN CN202110050491.0A patent/CN112804470A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20070053447A1 (en) | Wireless RF Link for Uncompressed Transmission of HDTV Signals | |
| US20040196404A1 (en) | Apparatus for wireless RF transmission of uncompressed HDTV signal | |
| US10044417B2 (en) | Systems and methods for RRU control messaging architecture for massive MIMO systems | |
| CN107409038B (en) | Full duplex radio in wireless tunneling system | |
| RU2548676C2 (en) | Method and device for transmitting cpri signal via coaxial line | |
| CN111726700A (en) | Video relay system and video receiving system | |
| CN102186073A (en) | HD-SDI (High Definition-Serial Digital Interface) video signal transmission system and method in high-speed dome camera | |
| CN109495179B (en) | X-band wide-band high-capacity communication device | |
| US8032916B2 (en) | Single master clock control of Ethernet data transfer over both a cable TV return path and an Ethernet forward path | |
| WO2014117537A1 (en) | Apparatus, method, electronic device, and communications system for transmitting signal between devices | |
| CN214281517U (en) | Wireless transmission receiving and transmitting system for high-definition uncompressed video | |
| CN112804470A (en) | Wireless transmission receiving and transmitting system without compressed video | |
| CN109462438B (en) | Relay network element equipment, remote network element equipment and optical fiber distributed system | |
| US10122520B2 (en) | Microwave backhaul system having quadruple capacity | |
| US7519078B2 (en) | Automated ethernet configuration of CATV network | |
| US11477518B2 (en) | Signal processing device and signal processing method | |
| US7751718B2 (en) | Efficient transmission of digital return path data in cable television return path | |
| KR101235831B1 (en) | Apparatus and method for transmitting/receiving data in a communication system | |
| CN114710639B (en) | Video signal conversion system, method and device | |
| CN105610509B (en) | A kind of 160M optical transmission devices | |
| WO2022267793A1 (en) | Signal transmission method, transmission system, and electronic device | |
| CN214205534U (en) | Satellite measurement and control data transmission radio frequency channel cross backup device and satellite | |
| CN219018898U (en) | Portable ultra-high definition video coding device | |
| US7765576B2 (en) | Changing communication mode in a CATV pathway using mute commands | |
| CN214045804U (en) | Double-frequency wireless image transmission system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |