IPTV and Technological Progress (1)
In 1999, the British Video Networks launched the first IPTV service over the world.
IPTV is the use of a computer or television set-top box to receive video and complete programming on demand, video broadcasting and Internet surfing functions. It uses highly efficient video compression technology that enables video transmission bandwidth in 800Kb / s near the DVD, when you can have the effect of ratings, to carry out future video services such as live video over the Internet, remote real video on demand, in terms of production and other program source has a strong advantage and a new technology concept.
Traditional television problems:
the traditional one-way broadcast television is the way, which greatly limits the interaction between the television audience and television service providers, but also limits the program of personalized and immediate. If a television audience of all content being broadcast channels are not interested, he (she) will have no choice. This is not only a loss for the TV audience on a time, for it is a cable service providers waste of resources. In addition, the current implementation of the specific content of the program in a specific period of time to play for many viewers is inconvenient. A viewer may wish to night work sometime in the morning, watch the news, but one ready to take a train passenger wants to leave home the night before the scheduled broadcast to watch a football video game. Now it seems impossible.
Users at home can enjoy IPTV services in three ways:
⑴ computer;
⑵ ordinary TV + network set-top boxes;
⑶ mobile terminal (such as IPad, IPhone, etc.).
It is able to adapt to the trend of rapid development of today's networks, full and effective use of network resources. IPTV is different from traditional analog cable TV, digital TV is different from the classic. Because of traditional and classical digital television has frequency division, time, one-way broadcasting characteristics; although classical digital TV relative to the analog TV there are many technical innovations, but only the signal is changed, but did not touch the media content mode of transmission.
Main feature
IPTV infrastructure is using broadband cable network to household appliances TV as the main terminal and provide television programming, including a variety of digital media services via the Internet protocol.
Features in:
1) The user can get high quality (close to DVD level) digital media services.
2) You can have a very wide degree of freedom to select each site offers online broadband IP video programming.
3) to achieve substantive interactive media providers and media consumers. IPTV broadcast platform will be used in a typical representative of a new generation of home digital media terminal, you can configure a variety of multimedia services based on the user's choice, including digital TV, video IP phones, DVD / VCD player, internet visit, e-mail , as well as a variety of online information consulting, entertainment, education and business functions.
4) network developers and program providers to provide a broad emerging markets. At present, China's telecommunications industry is growing rapidly and users of information services increasingly demanding, especially broadband video information. We can say that China has basically met the conditions to develop IPTV technology and market conditions.
General said the IPTV and digital TV, both similarities and differences between. FHN company's technical experts had presented both the similarities and differences in the following aspects.
1. Technical System
IPTV system known as interactive television, its system structure includes streaming media services, program editing, storage and authentication and accounting and other subsystems, mainly stored and transferred as MPEG-4 encoding core streaming media files, based on IP network transmission, usually set at the edge of content distribution service node, configure streaming media services and storage device, the user terminal can be IP STB + TV, it can also be PC.
Cable digital TV broadcast network to take the HFC network system, and traditional analog cable television network architecture the same and carry out the new interactive business case (eg VOD), network system will be different. Cable Digital TV VOD system includes VOD services, content program editing, storage and authentication and accounting system, the main storage and transmission of the MP-2TS stream, using IPOVERDWDM technology, DVDIP fiber optic transmission network based on distributed architecture IPTV is different, Cable Digital TV VOD system uses a centralized service architecture, in HFC headends does not need to be configured for the storage and distribution of video content servers, you only need to place the receiver and GAM modulated DWDM equipment can greatly reduce the system operating costs and management complexity, the user terminal is a digital TV set-top box. Currently China has basically formed digital TV industry chain, there has been a large number of digital TV set-top box manufacturers, front-end equipment manufacturers, systems integrators.
2. Business content
IPTV has a very flexible interactive features, because it has the inherent advantages of symmetrical interactive IP network, its program in the network, can be broadcast, multicast, unicast multiple release mode. Can be very flexible implementation of electronic menus, program reservation, real fast forward, rewind, terminal account and billing management, programming, and other functions. In addition to other content-based services can also expand Inter network, such as online games, e-mail, electronic banking and so on.
Cable digital television broadcasts, video on demand must be achieved if the original two-way HFC network transformation broadcast. Under normal circumstances, the only open interactive channel information related to life. If you want to support video-on-demand digital TV, but also through CALBEMODEM incoming IP network to support, in fact, IPTV, digital IPTV system Hangzhou It is this mode. Judging from the content provider services, digital cable TV is better IPTV.
3. The main advantage
The main selling point is the expansion of IPTV in the interaction, and the Inter net services. IPTV also can be very easily be TV service and Internet browsing, e-mail, as well as a variety of online information consulting, entertainment, education and business functions together, in a dominant position in the future competition.
The main selling point for the high-definition digital TV picture quality.
4. User Groups
Both markets are home users, user groups, relying on just one cable, one relying on broadband, similar benefits to the user.
5. Prospects
In a very long period of time there will be coexistence between the two conditions. IPTV is an increase in the number of program channels of television programs, not instead of cable digital television. Because the real-time broadcast IPTV have a certain cost, so completely out of IPTV instead of cable or satellite television significance. However, because of numerous IPTV attract people function as a stand-alone program channel is still very viable. From the information industry development perspective, IPTV or triple play of the largest entry point.
Main
MPEG-4 is defined by the Moving Picture Experts Group, compared with MPEG-1 and MPEG-2, MPEG-4 is more suitable for interactive AV service and remote monitoring.
www.apkintvbox.com QHDTV Leadtv MYiptv
IPTV is the use of a computer or television set-top box to receive video and complete programming on demand, video broadcasting and Internet surfing functions. It uses highly efficient video compression technology that enables video transmission bandwidth in 800Kb / s near the DVD, when you can have the effect of ratings, to carry out future video services such as live video over the Internet, remote real video on demand, in terms of production and other program source has a strong advantage and a new technology concept.
Traditional television problems:
the traditional one-way broadcast television is the way, which greatly limits the interaction between the television audience and television service providers, but also limits the program of personalized and immediate. If a television audience of all content being broadcast channels are not interested, he (she) will have no choice. This is not only a loss for the TV audience on a time, for it is a cable service providers waste of resources. In addition, the current implementation of the specific content of the program in a specific period of time to play for many viewers is inconvenient. A viewer may wish to night work sometime in the morning, watch the news, but one ready to take a train passenger wants to leave home the night before the scheduled broadcast to watch a football video game. Now it seems impossible.
Users at home can enjoy IPTV services in three ways:
⑴ computer;
⑵ ordinary TV + network set-top boxes;
⑶ mobile terminal (such as IPad, IPhone, etc.).
It is able to adapt to the trend of rapid development of today's networks, full and effective use of network resources. IPTV is different from traditional analog cable TV, digital TV is different from the classic. Because of traditional and classical digital television has frequency division, time, one-way broadcasting characteristics; although classical digital TV relative to the analog TV there are many technical innovations, but only the signal is changed, but did not touch the media content mode of transmission.
Main feature
IPTV infrastructure is using broadband cable network to household appliances TV as the main terminal and provide television programming, including a variety of digital media services via the Internet protocol.
Features in:
1) The user can get high quality (close to DVD level) digital media services.
2) You can have a very wide degree of freedom to select each site offers online broadband IP video programming.
3) to achieve substantive interactive media providers and media consumers. IPTV broadcast platform will be used in a typical representative of a new generation of home digital media terminal, you can configure a variety of multimedia services based on the user's choice, including digital TV, video IP phones, DVD / VCD player, internet visit, e-mail , as well as a variety of online information consulting, entertainment, education and business functions.
4) network developers and program providers to provide a broad emerging markets. At present, China's telecommunications industry is growing rapidly and users of information services increasingly demanding, especially broadband video information. We can say that China has basically met the conditions to develop IPTV technology and market conditions.
General said the IPTV and digital TV, both similarities and differences between. FHN company's technical experts had presented both the similarities and differences in the following aspects.
1. Technical System
IPTV system known as interactive television, its system structure includes streaming media services, program editing, storage and authentication and accounting and other subsystems, mainly stored and transferred as MPEG-4 encoding core streaming media files, based on IP network transmission, usually set at the edge of content distribution service node, configure streaming media services and storage device, the user terminal can be IP STB + TV, it can also be PC.
Cable digital TV broadcast network to take the HFC network system, and traditional analog cable television network architecture the same and carry out the new interactive business case (eg VOD), network system will be different. Cable Digital TV VOD system includes VOD services, content program editing, storage and authentication and accounting system, the main storage and transmission of the MP-2TS stream, using IPOVERDWDM technology, DVDIP fiber optic transmission network based on distributed architecture IPTV is different, Cable Digital TV VOD system uses a centralized service architecture, in HFC headends does not need to be configured for the storage and distribution of video content servers, you only need to place the receiver and GAM modulated DWDM equipment can greatly reduce the system operating costs and management complexity, the user terminal is a digital TV set-top box. Currently China has basically formed digital TV industry chain, there has been a large number of digital TV set-top box manufacturers, front-end equipment manufacturers, systems integrators.
2. Business content
IPTV has a very flexible interactive features, because it has the inherent advantages of symmetrical interactive IP network, its program in the network, can be broadcast, multicast, unicast multiple release mode. Can be very flexible implementation of electronic menus, program reservation, real fast forward, rewind, terminal account and billing management, programming, and other functions. In addition to other content-based services can also expand Inter network, such as online games, e-mail, electronic banking and so on.
Cable digital television broadcasts, video on demand must be achieved if the original two-way HFC network transformation broadcast. Under normal circumstances, the only open interactive channel information related to life. If you want to support video-on-demand digital TV, but also through CALBEMODEM incoming IP network to support, in fact, IPTV, digital IPTV system Hangzhou It is this mode. Judging from the content provider services, digital cable TV is better IPTV.
3. The main advantage
The main selling point is the expansion of IPTV in the interaction, and the Inter net services. IPTV also can be very easily be TV service and Internet browsing, e-mail, as well as a variety of online information consulting, entertainment, education and business functions together, in a dominant position in the future competition.
The main selling point for the high-definition digital TV picture quality.
4. User Groups
Both markets are home users, user groups, relying on just one cable, one relying on broadband, similar benefits to the user.
5. Prospects
In a very long period of time there will be coexistence between the two conditions. IPTV is an increase in the number of program channels of television programs, not instead of cable digital television. Because the real-time broadcast IPTV have a certain cost, so completely out of IPTV instead of cable or satellite television significance. However, because of numerous IPTV attract people function as a stand-alone program channel is still very viable. From the information industry development perspective, IPTV or triple play of the largest entry point.
Main
MPEG-4 is defined by the Moving Picture Experts Group, compared with MPEG-1 and MPEG-2, MPEG-4 is more suitable for interactive AV service and remote monitoring.
www.apkintvbox.com QHDTV Leadtv MYiptv
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