CN214281517U - Wireless transmission receiving and transmitting system for high-definition uncompressed video - Google Patents
Wireless transmission receiving and transmitting system for high-definition uncompressed video Download PDFInfo
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Abstract
The utility model discloses a wireless transmission receiving and transmitting system of high-definition uncompressed video, which comprises a high-definition uncompressed video transmitting unit and a 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 utility model discloses combine terahertz broadband wireless communication device and non-compression video collection system, utilize terahertz communication big bandwidth, low time delay's characteristic now, validity and reliability when having improved non-compression video wireless transmission provide a wireless transmission non-compression video's feasibility technological means.
Description
Technical Field
The utility model relates to a video transmission and wireless communication technical field, concretely relates to high definition does not have compressed video's wireless transmission receiving and dispatching system.
Background
In recent years, the demand for high-speed transmission of various high-definition videos is increasing, and the demand of users for high-definition television signal transmission with higher and higher requirements on high-definition movie television service quality and no compression or low compression rate is also increasing. 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. Further, according to the foreign media report, japan prepared to relay the olympics using 8K technology, united with the international telecommunication union under national flag, by using 7680x4320 resolution proposed by the NHK tv station in japan as the international 8K super quality tv (SHV) standard, the bit width is 12 bits, and the frame number is 120 frames per second, i.e., the resolution is 143.32 Gbps.
Such high-rate transmission of hundred gigabit data 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, so that the problems need to be solved urgently, and therefore, a high-definition uncompressed video wireless transmission transceiving system is provided.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve lies in: how to solve the problem of uncompressed video transmission that wired communication or microwave communication are difficult to be competent, provide a high-definition uncompressed video wireless transmission receiving and dispatching system, 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 utility model solves the technical problems through the following technical proposal, and comprises a high-definition non-compression video transmitting unit and a high-definition non-compression 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 emission radio frequency link system comprises a complete terahertz emission radio frequency link, an emission power supply module and an emission antenna.
Furthermore, the high-definition uncompressed video receiving unit comprises a video display module, a received signal processing module and a 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 emission signal processing module is connected with the output end of the information source acquisition module, and the output end of the emission signal processing module is connected with the input end of the terahertz emission 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 non-compression 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 the radio frequency signal is Ka waveband, E waveband, W waveband, 140GHz, 220GHz, 340GHz and 660 GHz. The carrier frequency of the antenna port of the terahertz receiving radio frequency link system for receiving the radio frequency signal is matched with a Ka waveband, an E waveband, a W waveband, 140GHz, 220GHz, 340GHz and 660GHz of a 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 long distance, channel coding 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 and receiving signal processing modules, so that the system reliability can be obviously improved.
Compared with the prior art, the utility model 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 in 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 the internal signal processing scheme of the transmission signal processing module in the embodiment of the present invention;
fig. 4 is a schematic diagram of an internal signal processing scheme of the received signal processing module according to the embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described in detail below, and the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
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. 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, the factors of 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 into four detachable sub-modules, and the sub-modules are connected by using a radio frequency coaxial cable and a standard waveguide interface 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 operated, is provided with a TCP/IP protocol stack, is connected with an 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 parallel design is needed for a processing algorithm, 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 segment of the received information sample 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 limitation of the 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 problem of replacing the DAC chip by a domestic radio frequency device is solved conveniently.
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 bands 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.
In summary, the wireless transmission transceiving system for the high-definition uncompressed video combines the terahertz broadband wireless communication device with the uncompressed video acquisition device, and improves the effectiveness and reliability of the uncompressed video during wireless transmission by utilizing the characteristics of large bandwidth and low time delay of terahertz communication, thereby providing a feasible technical means for wirelessly transmitting the uncompressed video.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. The utility model provides a wireless transmission receiving and dispatching system of high definition uncompressed video which 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;
in the transmitting signal processing module, video original bit stream information data input by the information source acquisition module is sent into an FPGA chip in the transmitting signal processing module through an SDI transmission line, M branches are carried out according to information data blocks after buffering, parallel processing is carried out, each information data block in each branch is inserted into a transmission frame header and is sent to an LDPC encoder after scrambling; sending the M paths of coded data to a parallelized MQAM modulation mapping and forming filtering module to generate parallelized baseband modulation data; then IQ complex data are sent to an intermediate frequency DAC sub-board through a parallel-to-serial port high-speed interface of the FPGA; 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 the 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 the information data block; then, the original video bit stream information stream is output to a video display module through a data combining module.
2. The wireless transmission transceiving system of high definition uncompressed 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 of high definition uncompressed 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 of high definition uncompressed 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 of high definition uncompressed 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 of high definition uncompressed 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 a 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 sequentially connected.
7. The wireless transmission transceiving system of high definition uncompressed 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 of high definition uncompressed 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 of high definition uncompressed 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 of high definition uncompressed 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.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112804470A (en) * | 2021-01-14 | 2021-05-14 | 博微太赫兹信息科技有限公司 | Wireless transmission receiving and transmitting system without compressed video |
| CN117636611A (en) * | 2023-10-23 | 2024-03-01 | 邦士医疗科技股份有限公司 | Integrated control system for surgical power handle and data flow control and response method thereof |
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2021
- 2021-01-14 CN CN202120106701.9U patent/CN214281517U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112804470A (en) * | 2021-01-14 | 2021-05-14 | 博微太赫兹信息科技有限公司 | Wireless transmission receiving and transmitting system without compressed video |
| CN117636611A (en) * | 2023-10-23 | 2024-03-01 | 邦士医疗科技股份有限公司 | Integrated control system for surgical power handle and data flow control and response method thereof |
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