1. Timing
Worldwide, the demand for broadcast video systems has increased significantly year by year, because the following factors have taken effect at the same time:
The increase in broadcast channels available for viewers to choose from. Worldwide, the choices of more viewers have grown from a few channels to hundreds of channels.
The development of cable and satellite TV transmission networks. The development of Internet broadcasting has brought us into the era of "Million Channels".
The development of small-scale and small-scale broadcast video applications within the company for information exchange, training and security. There have also been considerable developments in the entertainment industry, such as hotel video-on-demand and super-large electronic display screens.
Delayed video playback and quasi-video-on-demand greatly increase the convenience of users and make users need more channels.
Nowadays, large-screen TVs have evolved from ordinary TVs to high-definition TVs, which has led to the need to install more broadcasting equipment.
The content of the video is increasing rapidly. Additional special effects, multi-windows, subtitle overlay, replay and other functions require higher-performance broadcasting equipment.
Abundant video resources. Compared with reports that were only produced in special studios and major events before, it can now be produced in every community and business. The number of video resources has grown rapidly, and a new low-end broadcast equipment market has emerged.
The rapid transition to digital TV led to the replacement of the old analog signal system.
Due to the digital TV revolution, there is a strong demand for video encoding conversion between various digital signal specifications, which has led to the need to add broadcasting equipment, including:
Basic specifications: uncompressed, time compressed, MPEG2, MPEG4, H.264 compression, Windows Media9, Real Networks, etc.;
Image size: standard image quality (SD), high image quality 720P, high image quality 1080P;
Transmission/encapsulation specifications: ATSC/DVB, SDI, IP, etc.;
Audio specifications: AES3, etc.;
International specifications: NTSC, PAL;
Device interface: 1394 Firewire interface, DVI interface, GigE Ethernet interface;
These latest changes that have taken place above make powerful broadcast video equipment necessary. Broadcasting equipment requires stronger processing functions, more output channels, more output specifications and a wider range of applications.
This paper discusses a brand new product platform that will meet future needs. The product cost and development cost of this platform will be lower than the existing system.
2. Video system platform
First, let us investigate some of the video broadcasting systems and video platforms in use today. Generally speaking, the basic processing for video production and distribution has the following aspects:
Content production: camera production and computer production; editing/image overlay/image mixing; special effects; video quality enhancement; video signal format conversion; video storage.
Video extraction and release: video extraction specification conversion; insertion of program information and advertisements; broadcast video specification conversion; distribution: normal, delayed playback, and video on demand.
Today, the platforms used to complete the above video functions can be roughly divided into the following types:
2.1 Content production platform
Because the content production platform is a non-real-time system, there is no high performance requirement, even if the processing time is longer than the actual time, there is no problem. Therefore, ordinary computers and workstations are sufficient. Usually, these platforms are used together with a video accelerator board, but this accelerator board is only for improving the work efficiency of video producers, not for real-time processing needs.
2.2 Video extraction and publishing platform
The video extraction and publishing platform must be synchronized with the video broadcast, and all processing must be completed within the line frequency and frame rate of the video broadcast, so there is an absolute requirement for high performance. Reliability is also an inevitable requirement for these processes.
In order to meet these requirements, most of the video extraction and distribution platforms used today are built on the manufacturer's professional broadcast platforms. This platform consists of several modules with special functions built in professional equipment.
Some manufacturers have begun to use low-cost personal computers for real-time video processing, but this is only limited to processing some limited peripheral functions, and has not become the mainstream of video extraction and distribution systems.
The facts are already very clear, and PC-based platforms will gradually play an increasingly important role in video extraction and publishing systems. Due to the following reasons, these platforms will have broad application prospects:
Outstanding performance-price ratio brought by large-capacity processing;
Can be used for standard platforms of different application software manufacturers, with better functions and lower costs;
Higher cost performance and more functions;
3. The strengths and limitations of personal computers
The ability of personal computers has been continuously improved, and now it can process a single video stream, compress a single video stream in real time, store it on the hard disk, decompress it, and play a standard image quality stream. Despite this, the bandwidth of a personal computer is far from being able to handle the video processing of many uncompressed video streams, the processing of end video distribution, the processing of live broadcasts, and other high-quality video processing.
At present, the difficulty of uncompressed video processing lies in solving the contradictions of countless professional processing boards from various manufacturers. These professional processing boards can complete their specific functions, but cannot flexibly add new functions. When you need multiple functions, you need to coordinate completely different processing boards from different manufacturers.
What the market needs is a flexible platform that can handle uncompressed video on a personal computer. It can provide the processing power of professional equipment like high-end systems and the low price of low-end personal computer systems.
4. FPGA in video processing
Produced by Altera or other companies
FPGA chip has the ability to provide programmable software and the processing performance of professional hardware. In video applications, FPGA chips can provide up to 10 to 100 times the processing power on a personal computer platform, and when users need to change the functions of the system, they only need to re-download a file to modify the user’s hardware configuration. Can complete the user's hardware upgrade.
Although FPGA technology has long been used in the broadcast video industry, so far, most of these applications are limited to specific functions on professional platforms, and only a few are applied to specific functions on PCI boards in personal computers.
Nevertheless, the processing power of FPGAs has developed rapidly in recent years. It has now evolved to the point where a chip can perform the functions of a board, or that a chip can perform the functions of a system (SoC). Because multiple FPGA chips can be installed on a PCI board, it is possible to develop a complete system equivalent to a professional device on a board.
In addition, under the existing technology, standard video processing function modules can be downloaded to a new type of high-processing FPGA chip. These modules are like multiple functional modules in a professional device. In other words, a single chip can now contain the entire system, without the need to be implemented by a professional device as before.
Compared with the development of professional equipment system, this development method has the following advantages: much lower development cost; much lower system cost; user design and upgrade are extremely convenient; the application software of the personal computer platform can be directly used.
5. Develop a "personal computer + FPGA" platform
When designing a video system using the "personal computer + FPGA" algorithm, the most important thing is to decide which processing to run in the FPGA and which to run on the personal computer. Generally speaking, the best system design is that all high-speed data flows through the FPGA instead of the personal computer. Personal computers can be used for data flow management and some relatively low data output functions, such as inserting superimposed data.
The following types of processing are suitable for obtaining the best performance through FPGA: video mixing/overlaying; synchronous compression/decompression; data format conversion/transcoding; multi-channel simultaneous output system IP, DVB/ATSC specification packet/stream processing; video extraction , Decompression, multi-channel broadcasting; video enhancement: noise reduction, color image stabilization, resolution enhancement, etc.; video, audio and other data stream processing.
A board based on an FPGA chip can handle a total bandwidth of up to 500MB (equivalent to a high-quality uncompressed data stream or 4 standard-quality uncompressed data streams).
If the user needs, a personal computer can carry multiple processing boards, and a tower rack-mount server can contain multiple personal computers.
This design method is widely used, from a small personal computer that can handle a few SDI data streams to a tower server that can handle hundreds of data streams.
6. Application of "Personal Computer + FPGA" Platform
Using the algorithm of the above "PC + FPGA" platform, it can provide low-cost and high-efficiency solutions for the following types of applications: local networks, entertainment, World Wide Web, and cable TV video on demand servers; timed replay servers; delay; sports Live video production of programs and other programs; ATSC/DVB data broadcasting; community service system, local news/weather forecast, cable online shopping; Internet cooperative communication channels; multi-channel satellite receiving equipment; program production and insertion advertising equipment; regional Video publishing system.
7. Introduction: Tsunami on-board video platform
Avvida's Tsunami PCI board and Wave development kit allow users to quickly develop and mass-produce their products.
The Tsunami broadcast processing board includes: up to 6 SDI interfaces; up to 5 FPGA chips, each with 4 high-speed memories, which can realize a variety of video processing functions; high-bandwidth memory access through the PCI bus and personal computers; A digital video input interface, the transfer rate from the personal computer to the Tsunami broadcast board can reach 300Mbps.
Avvida can provide the following video processing function modules: format conversion between SDI RAW video format and 4:4:2, YUV, YcrCb, and other synchronous compression formats; 4:4:4 to 4:4:2 format sampling ; Color space conversion: RGB format to YUV format; superimposition and mixing of video and audio; SDI input/output processing and error detection (EDH) insertion and extraction; genlock; MPEG2, MPEG4 and other compression/decompression specifications ; SDI input signal save; storage content replay; others.
8. Summary
The demand for digital video broadcasting systems with stronger processing capabilities is growing rapidly. This is both a new challenge and a new opportunity for a system with broad application prospects. A standard personal computer equipped with Avvida's powerful Tsunami FPGA PCI processing board can effectively meet the needs of the market. The FPGA-based video processing function module attached to the processing board can bring users lower development costs and shorter time to market.
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How far(long) the transmitter cover?
The transmission range depends on many factors. The true distance is based on the antenna installing height , antenna gain, using environment like building and other obstructions , sensitivity of the receiver, antenna of the receiver . Installing antenna more high and using in the countryside , the distance will much more far.
EXAMPLE 5W FM Transmitter use in the city and hometown:
I have a USA customer use 5W fm transmitter with GP antenna in his hometown ,and he test it with a car, it cover 10km(6.21mile).
I test the 5W fm transmitter with GP antenna in my hometown ,it cover about 2km(1.24mile).
I test the 5W fm transmitter with GP antenna in Guangzhou city ,it cover about only 300meter(984ft).
Below are the approximate range of different power FM Transmitters. ( The range is diameter )
0.1W ~ 5W FM Transmitter ：100M ~1KM
5W ~15W FM Ttransmitter : 1KM ~ 3KM
15W ~ 80W FM Transmitter : 3KM ~10KM
80W ~500W FM Transmitter : 10KM ~30KM
500W ~1000W FM Transmitter : 30KM ~ 50KM
1KW ~ 2KW FM Transmitter : 50KM ~100KM
2KW ~5KW FM Transmitter : 100KM ~150KM
5KW ~10KW FM Transmitter : 150KM ~200KM
How to contact us for the transmitter?
Call me +8618078869184 OR
Email me [email protected]
1.How far you want to cover in diameter ?
2.How tall of you tower ?
3.Where are you from ?
And we will give you more professional advice.
About Us
FMUSER.ORG is a system integration company focusing on RF wireless transmission / studio video audio equipment / streaming and data processing .We are providing everything from advice and consultancy through rack integration to installation, commissioning and training.
We offer FM Transmitter, Analog TV Transmitter, Digital TV transmitter, VHF UHF Transmitter, Antennas, Coaxial Cable Connectors, STL, On Air Processing, Broadcast Products for the Studio, RF Signal Monitoring, RDS Encoders, Audio Processors and Remote Site Control Units, IPTV Products, Video / Audio Encoder / Decoder, designed to meet the needs of both large international broadcast networks and small private stations alike.
Our solution has FM Radio Station / Analog TV Station / Digital TV Station / Audio Video Studio Equipment / Studio Transmitter Link / Transmitter Telemetry System / Hotel TV System / IPTV Live Broadcasting / Streaming Live Broadcast / Video Conference / CATV Broadcasting system.
We are using advanced technology products for all the systems, because we know the high reliability and high performance are so important for the system and solution . At the same time we also have to make sure our products system with a very reasonable price.
We have customers of public and commercial broadcasters, telecom operators and regulation authorities , and we also offer solution and products to many hundreds of smaller, local and community broadcasters .
FMUSER.ORG has been exporting more than 15 years and have clients all over the world. With 13 years experience in this field ,we have a professional team to solve customer's all kinds of problems. We dedicated in supplying the extremely reasonable pricing of professional products & services. Contact email : [email protected]
Our Factory
We have modernization of the factory . You are welcome to visit our factory when you come to China.
At present , there are already 1095 customers around the world visited our Guangzhou Tianhe office . If you come to China , you are welcome to visit us .
At Fair
This is our participation in 2012 Global Sources Hong Kong Electronics Fair . Customers from all over the world finally have a chance to get together.
Where is Fmuser ?
You can search this numbers " 23.127460034623816,113.33224654197693 " in google map , then you can find our fmuser office .
FMUSER Guangzhou office is in Tianhe District which is the center of the Canton . Very near to the Canton Fair , guangzhou railway station, xiaobei road and dashatou , only need 10 minutes if take TAXI . Welcome friends around the world to visit and negotiate .
Contact: Sky Blue
Cellphone: +8618078869184
WhatsApp: +8618078869184
Wechat: +8618078869184
E-mail: [email protected]
QQ: 727926717
Skype: sky198710021
Address: No.305 Room HuiLan Building No.273 Huanpu Road Guangzhou China Zip:510620
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English: We accept all payments , such as PayPal, Credit Card, Western Union, Alipay, Money Bookers, T/T, LC, DP, DA, OA, Payoneer, If you have any question , please contact me [email protected] or WhatsApp +8618078869184
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Every of our item list page bottom on top have a paypal logo to pay.
Credit Card.If you do not have paypal,but you have credit card,you also can click the Yellow PayPal button to pay with your credit card.
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But if you have not a credit card and not have a paypal account or difficult to got a paypal accout ,You can use the following:
Western Union.  www.westernunion.com
Pay by Western Union to me :
First name/Given name: Yingfeng
Last name/Surname/ Family name: Zhang
Full name: Yingfeng Zhang
Country: China
City: Guangzhou
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T/T . Pay by T/T (wire transfer/ Telegraphic Transfer/ Bank Transfer)
First BANK INFORMATION (COMPANY ACCOUNT):
SWIFT BIC: BKCHHKHHXXX
Bank name: BANK OF CHINA (HONG KONG) LIMITED, HONG KONG
Bank Address: BANK OF CHINA TOWER, 1 GARDEN ROAD, CENTRAL, HONG KONG
BANK CODE: 012
Account Name : FMUSER INTERNATIONAL GROUP LIMITED
Account NO. : 012-676-2-007855-0
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Second BANK INFORMATION (COMPANY ACCOUNT):
Beneficiary: Fmuser International Group Inc
Account Number: 44050158090900000337
Beneficiary's Bank: China Construction Bank Guangdong Branch
SWIFT Code: PCBCCNBJGDX
Address: NO.553 Tianhe Road, Guangzhou, Guangdong,Tianhe District, China
**Note: When you transfer money to our bank account, please DO NOT write anything in the remark area, otherwise we won't be able to receive the payment due to government policy on international trade business.
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* It will be sent in 1-2 working days when payment clear.
* We will send it to your paypal address. If you want to change address, please send your correct address and phone number to my email [email protected]
* If the packages is below 2kg,we will be shipped via post airmail, it will take about 15-25days to your hand.
If the package is more than 2kg,we will ship via EMS , DHL , UPS, Fedex fast express delivery,it will take about 7~15days to your hand.
If the package more than 100kg , we will send via DHL or air freight. It will take about 3~7days to your hand.
All the packages are form China guangzhou.
* Package will be sent as a "gift" and declear as less as possible,buyer don't need to pay for "TAX".
* After ship, we will send you an E-mail and give you the tracking number.
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For Warranty .
Contact US--->>Return the item to us--->>Receive and send another replace .
Name: Liu xiaoxia
Address: 305Fang HuiLanGe HuangPuDaDaoXi 273Hao TianHeQu Guangzhou China.
ZIP:510620
Phone: +8618078869184
Please return to this address and write your paypal address,name,problem on note: |
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