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Low Cost Cable tv Digital Headend

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Place of Origin:
Zhejiang, China
Brand Name:
DIBSYS
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Hangzhou DIBSYS Technologies Co., Ltd.
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Place of Origin Zhejiang, China
Brand Name DIBSYS

 

DVB-C catv digital headend system

1.overview

In recent years, digital television has undergone considerable development in India,Singapore,Brazil,etc. Digital television system is based on DVB standards and other standards of domestic industry concerned, to realize the television's digital broadcasting by encoding, multiplexing, adapting, modulating, encrypting,transporting,set-top boxes receiving and other digital processings for the video, audio programs and data signal programmes.

The digital television system will greatly improve the images or sounds of the quality and enrich the content; more effective use of resources, economize the signal frequency of power.Meanwhile,digital television system may also offer diverse, interactive and individuation service. And it’s also convenient for the videocast operators to deploy all kinds of comprehensive and interactive business ( including the internet business ),which is based on information technology and security fees, realize the commercial operations of the radio and television to face to all the users. Therefore, digital television system will replace analog TV system,and become the mainstream technology in television development in trend.

2.Diagram

 

 

 Low cost cable tv digital headend

 

 

3.System Composition

 DVB-C of CATV system consists of several parts signal source receiving, multiplexing system, conditional access, user management system (including the scrambler, CA system); signal modulation, (QAM modulator) and the receiving system of the users ( set-top box).

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 suitble for the system.They are typical product of satellite receiver,mpeg-2 encoder and MPEG-4 encoder.

Multiplexing and Scrambling

  The main function of multiplexing technology can multiplex TS streams of different programs to one TS stream out with multiple programs. 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 value-added 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. 

Modulation

  Modulation is transmitting A/V signal into stable high frequency oscillation signal. The modulated signal could be sent to near building, family or remote terminal users via another QAM devices. You can choose your modulator according to sd/hd channels quantity. 

HFC Internet 

  HFC is a broadband transmission network in DVB-C system. 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.

4.Product list

 

Type

Item 

Model name 

Description

Conditions

IRD

DVB-S FTA RF Tuners to IP Decoder

IRD1218

Up to 8 channels FTA Tuners per chassis

Up to 244 SPTS-over-IP in SPTS mode

Support BISS function

1.Most channels from FTA DVB-S2

2.Low cost  

3.Not need strictly video bitrate if you have enough Internet Bandwidth

DVB-S2 IRD And Descrambler

IRD1340

1.4 channels RF inputs

2.Data stream Protocol of UDP,ARP,ICMP and IGMP

3.4xseparate MPEG-TS-over-IP outputs

4.Four CI slot

1.If the others channels from Encrypted satellite TP, and you can get the Cam Card to descramble it

2.Get the channels directly without transcoding 

3.Not need strictly video bitrate if you have  enough Internet Bandwidth

Encoder

MPEG2 SD

encoder

ENC3084

1.8 channels composite and 8 pairs R/L analog audio per chassis

2.Low bitrate 

3.Video aspect ratio: 4:3,16:9,2.21:1,1:1

4.Audio can with AAC, AC3 

1.Low cost  

2.Not need strictly video bitrate if you have  enough Internet Bandwidth

ENC3044

4 channels composite and 4 pairs R/L analog audio per chassis

 

H.264 Mpeg-2 SD encoder

ENC3184

1.Resolution: CIF,QVGA,QCIF(4ch)

2.Simultaneous encoding in MPEG-2 and H.264  formats

3.MPEG-1 Layer2 and AAC udio encoding

4.Filter Null packet Support

5.8*AV Input 

1.Low bitrate for good quality

2.Strictly Video bitrate for your LAN

ENC3144

4*AV

 

ENC3145

4*SDSDI

 

ENC3185

8*SDSDI

 

H.264 HDMI to IP encoder 

ENC3381

1 8 channels HDMI(HDCP) input 

2 1x ASI input multiplexing 

3. Simultaneous outputs SPTS/MPTS over GbE IP  

4. Support UDP/RTP over IP out

5. With MPEG-1 layer2 audio encoding, option AAC 

6. Resolution: 1080p/I, 720p, 480I,576I

1.Local player and DVB-S2 Encrypted channels from HD box with HDMI out

2.For the Good Video watch by the big LCD TV.

ENC3341

4*HDMI

 

ENC3345

4*HDSDI

 

ENC3385

8*HDSDI

 

H.264 HD encoder

ENC3311

1.Single channels H.264 SD/HD encoding 

2.Resolution:1080P/i@50/60Hz, 720p@50/60Hz, 480i, 576i

3.Option AAC audio encoding

 

H.264/mpeg-2 SD/HD

encoder

ENC3411

1.4 channels HDMI(HDCP) video inputs

2.MPEG1 LII, HE-AAC (v1&v2) , LC-AAC and AC-3

3.Chroma sample: 4:2:0 and 4:2:2 (option)

4.CC (Closed Caption)

5.Simultaneous outputs via SPTS/MPTS over IP 

6.Optional dual power input

7.Low latency mode

 

ENC3411

1*HDMI

 

ENC3445

4*HD-SDI

 

Modulator

IPQAM modualtor 

IPQ6250 

1.16 QAM channels 

2.Multiplexed or scrambled TS over UDP output

3.Up to four DVB SimulCrypt CAS(s) and complies with DVB-CSA

 

QAM modualtor

QAM6248

ASI/IP

 

Set Top Box

DVB-C HD STB 

STB210 

1.imageformat:JPG,PNG,BMP,

2.audioformat:mp3,wav,ogg,aac,m4a

3.MPEG-1Lll,MEPG-2,MPEG4AAC AC-3 (option)

4.H.264,1080p ,16::9 / 4:3

5.FLASH:8MB

 

SD STB

STB200

 

 

 CAS/SMS 

CAS/SMS 

SMS9000

Windows 2003 

 

2Ghz CPU,2G RAM 

 

SQL Server 2005/2008 Enterprise

 

Up to 32 clients to control  intallation

  

 

 Low cost cable tv digital headend

5.Direction

a.You should confirm how many TP nos before you decide the quantity of IRD. The program at the same Symbol Rate share one same TP. 

 

b.How to choose product

1) IRD

 

FTA DVB-S2 RF no need changing coding mode:

 

IRD1218(8 RF in,240 IP out)

 

Encryped DVB-S2 RF descrambling via cam card and no need changing coding mode:

 

IRD 1340(4 RF CI IRD)

 

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 out put 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 QAM QAM6248. 

 

6.Support and Maintenance

DIBSYS delivers standard support and maintenance during 3 years warranty period. Optionally a separate Service Level Agreement can be offered.

Ordering tips 

A.We can provide dibsys or third party CAS/smart card. (In consideration of maintenance, it’s better to use our CAS and card).

B.For over 2000 stbs orders, we can give free CAS/SMS operation support system software and long-term support

C.The price of set top box, depanding on wether you need RJ45 port or other factors  

 

7. Questions

  1. Where do you get the signal? Are they directly from satellite? 
  2. Will you use professional IRDs to satellite receiver to receive signal? 
  3. How many FTA and encrypted channels?  
  4. How many transponder(TP)?  ( Or you can send the programs list , we will check by ourself)
  5. How many SD and HD channels? 
  6. Are they based on MPEG- 2 or H.264 format? 
  7. Total how many end-user in your project? 

 

 

 

 

 

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Hangzhou DIBSYS Technologies Co., Ltd.
Business Type
Trading Company
Year Established
2009
Factory Size
Below 1,000 square meters
Total Employees
101 - 200 People
Contact Supplier Request Quote Chat Now

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