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Professional cable tv digital headend solution DVB-C solution for Europe Asia and South America
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Product Details
Place of Origin: | China | Brand Name: | DIBSYS | Model Number: | DVB-C solution |
Product Description
Professional cable tv digital headend solution DVB-C solution for Europe Asia and South America
1. Background Information
1.1 Introduction of DIBSYS
As a 8 years’ experience video streaming solution provider and one of China’s largest Internet TV hardware/software supplier, founded in year 2008, with over 2,000 deployments for over 20 global business cooperators, dedicated in the area of video streaming for over 6 years, DIBSYS has
proven expertise and experience in delivering advanced technology infrastructure to mobile operator, internet TV provider and PC terminal in hospitality market.
Located at the high and new technology zone of Hangzhou, Dibsys possesses predominance of talent and technique resource. It integrated intelligent and experienced expert and designer, and backed up by a dynamic team of over 50 excellent staff.
Owning independent intellectual property of all products, Dibsys provides professional DVB, IPTV/OTT solution and complete equipment covering in encoding, transcoding & distribution.
DIBSYS cover the part of main market share in China. Products and sytem have been exported
to European Union, South and North America, Middle East, Southeast Asia and etc, had accumulated much successful case.
2.2 System Directions
Signal Source Receiving
Equipments receive digital satellite signal source, local studio programs and A/V signal source.
In this process, TS stream, A/V or HDMI audio video signal covert to IP stream out. We would like
to recommend our high quality headend eqiupments which are suitble for the system.They
are typical product of satellite receiver IRD, mpeg2 SD encoder and MPEG4 HD
encoder.
Modulation,Multiplexing and Scrambling
The main function of multiplexing technology can multiplex TS streams of different programs to one
TS stream out with multiple programs. This process can make the TS convenient for transmisstion.
The signal scrambling is selected in accordance with the properties of the target signals. The
scrambling systems must satisfy some requirements, such as it must be difficult for a third party to
perform unauthorized reception and scrambled signal content must not be understandable,
besides, efficient scrambling of all kind of signals must be possible, various business formats such
as multi-channel services and billing schemes must be supported and so on .
After scrambling the TS, in order to reduce the loss in long distance transmission, the TS streams
need to be modulated into RF signal. Modulation is transmitting mpegts into stable high frequency
oscillation signal. The modulated signal could be sent to near building, family or remote
terminalusers via another QAM device. You can choose your modulator according
to sd/hd channels quantity.
In our solution, both multiplexing and scrambling process are combine to signal modulation module
in a QAM modulator.
Conditional access and user management
Conditional Access System is the key position between Scrambling of the multiplexed programs
and Subscriber Management System. Provider can control the system, add/reduce programs or
embedding other business contents. By means of management and authorization, provider can
achieve paid services.
CAS(Conditional Access System) security enhanced pay TV solution, and was designed to
provide the most security media contents protection to operators. It can encrypt control words
and user authorization information within a stable and highly secured environment, and fully
compatible with DVB Simul-Crypt standard.
In order to cater to the needs of ever expanding digital television network, the DIBSYS’s CAS
enables TV operators to deploy a medium- sized TV network in initial phase and large scale
by network expansion phase wherever in cable, satellite or terrestrial. Furthermore, DIBSYS’s CAS
support a number of mechanisms of content protection for better operator’s investment,
such as 3DES and AES encryption algorithm, smart card & STB binding, zone control, black list
management and so on.
SMS(Subscriber Management System)–supports flexible subscriber management and servicing
operations, including valueadded services such as message charging, voice charging and
malfunction reporting. The system is based on modular design, so that customers are able to
choose different modules and interfaces in accordance with their own needs, or request for
dedicated modules and interfaces to achieve seamless merging with their existing systems.
Meanwhile, we could also integrate customer’s office automation system, equipment management
system and program management system onto a unified platform, with necessary
re-design for system reliability and safety as a whole.
HFC Internet
A communications network (typically a cable TV network) that uses a combination of optical fibers
and coaxial cable. The fiber provides the highspeed backbone, and the coax is used to connect
end users to the backbone. Such networks typically use matching DOCSIS cable
modems at the head end and the customer premises, providing bidirectional
paths and Internet access.Distributed HFC access network with redundant
protection system, high safety and reliability, good expansibility and good network
performance index, can provide good broadband transmission network platform for
carrying out bidirectional interactive digital TV business.
The user terminal DVB receiving system
User- end devices (Set top box) provide final reception of programs and services to guests.DVB STB makes TV from passive receiving analog TV to interactive receiving
digital TV and data broadcast. We provide mpeg4 AVC HD STB and mpeg2 SD STB
for choice.
2.3 System Benefit
High Performance
- Supports 16 programs at least and a large number of STB users
- Advanced in video compression technology to deliver unsurpassed video quality at lowest bitrates
and low latency
Flexibility and Stability
- Modular design across the whole system, easy installation, maintenance and upgrade
- Add or exchange the equipment as necessary
- 1+1 redundant & hot-swappable power supplies for high reliability and stability of system.
High Adaptability and Availability
- Suitable for different common channels with one model of modulator
- Pay-as-you-grow modular design, flexible configurations and licensing mechanism.
Lower CAPEX/OPEX
- Low power consumption with high efficient reduce electricity cost for operators
-Adopt Web browser and SNMP management with remote monitoring and control, then can greatly
reduce management time and operating expenses (OPEX) of operators.
- High quality equipment built in multiplexing and scrambling simplify the system and save your money.
2.4 Product list
Here is a brief introduction of the main products refer to our DVB- C system. More information
will be offered when you contact us.
2.5 How to configure the system
The TP nos quantity is better to been offered, the program at the same Symbol Rate share one same TP.
Provide us a program list in order to let us know how many the FTA/encrypt program, and how many HD/SD
program you need. Example as below:
1) IRD
a.FTA DVB-S2 RF no need changing coding mode:
IRD1218(8 RF in,240 IP and 2ASI out)
b.Encrypt DVB-S2 RF descrambling via cam card and no need changing coding mode:
IRD 1340(4 RF CI IRD)
c.DVB-S2 need to change coding mode:
ENC3580(mpeg2 to mpeg4 avc,mpeg4 avc to mpeg2)
2) Encoder
Encrypted program received by satellite receiver or local program output A/V or HDMI:
Broadcast HD MPEG4 AVC Encoder(ENC3381),
Broadcast MPEG2/H264 Magnum SD Encoder(ENC3184),
Broadcast MPEG2 SD Encoder(ENC3084).
3) Modulator
If you need over 50 programs, We recommend you choose multiplexing scrambling,modulation
highly integration highly integratedhighly integration highly integration highly integration qam
modulator base on IP , such as our IPQ6250( up to 48 qam).
If less than 50 program, we suggest common modulator for cost thinking ,such as our RF/ASI/IP
to QAM modulator QAM6248(up to 4qam per unit)
3.Example of Case
As a mature company engaging in video broadcasting technology’s career, we has accumulated
some of typical experience in DVB system construction. If you have inquiry, our sales team will help
you construct a customtailor system. Now we will introduce you some of our cases, and you can take
these as a reference.
3.1 Example in Indonesia
3.1.1 Requirement
In this case, the client want to develop a DVB system upgraded from analog TV. The project want
to delivery 84 program in total, including: 35 mpeg4 encrypt channels, 38 FTA channels, 4
DVB-T FTA program and 4 HD local program. And will provide to 600 end-users. we gave him a solution ,
and the details as follow:
3.1.2 Solution Analysis
Set Top Box receiver
We recommend using DVB-S2 Set Top Box to receive the 35 channels mpeg4 encrypt program and the
DVB-T2 Set Top Box for the DVB-T2 signal with AV out.
Encoder
For the 39 channels received by STB, we configure 5 sets SD encoders ENC3184 with 8 AV input
and simultaneous encoding in MPEG-2 and H.264 formats.
The quantity of ENC3184=(35+4)/8=4.875(sets)
One set ENC3341 (4 channels HDMI to IP encoder) will be affordable to transmit the local HD video
signal source.
The quantity of ENC3341=4/4=1(sets)
Modulator
According to the program list provided, there are 15 TPs for 38 program, so we select 2 sets of the
4 in 1 QAM6248 with 8 DVB- S2 and up to 16 channels ASI or IP inputs per chasis.
The QAM6248 has more advantageous in the low cost and convenient networking.
The quantity of QAM6248=15/8=1.875(sets)
Two sets QAM6248 also can satisfy the bandwidth needed.
For SD channels: 1.5M/ch*39 ≈60M
For DVB-S2 channels:3.5M/TP*39 ≈123M
For 4 channels HD :8M/ch*4 ≈32M.
So the total bandwidth is 60+123+32=215M
Take the extra bandwidth capacity for consider, two sets QAM6248 supported about 300M is also
enough for the system’ smooth running.
Set Top Box Terminal
As the costumer request, he had 600 end-users and they need the high resolution, so we choose 600 sets
STB210 DVB-C HD set top box .
3.1.3 The diagram of this case
Contact Us
- Hangzhou DIBSYS Technologies Co., Ltd.
- Contact namemingquan pan
- Phone086-571-89714581
- AddressNo.102 xue yuan road Hangzhou,Zhejiang
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