| IPTV The interactive network TV, is a use of | | | | has basically met the conditions to develop IPTV |
| broadband cable networks, set the Internet, | | | | technology and market conditions. |
| multimedia, communications and other technology, | | | | General, IPTV and digital television, both points of |
| and to home users, including Digital TV A variety | | | | similarity and difference. Fiberhome Networks |
| of interactive services including brand-new | | | | technical experts from the following described |
| technology. Users at home can enjoy IPTV | | | | similarities and differences between the two. |
| services in two ways: (1) computer, and (2) | | | | 1. Technology System IPTV system, also known |
| Network STB + Normal TV). It is well adapted to | | | | as interactive television, its architecture includes |
| the rapid development of today's Internet trends, | | | | Streaming Media Service, program editing, storage |
| the full and effective use of network resources. | | | | and authentication and accounting, and other |
| IPTV is different from traditional analog cable, | | | | subsystems, the main storage and transmission |
| digital television is also different from the classic. | | | | of the content of which is the core of MP-4 as |
| Because the traditional and classic digital TV | | | | the encoding of streaming media files, based on IP |
| system has frequency division, time, one-way | | | | network transmission, usually set at the edge of |
| Broadcasting And so on; although compared to | | | | content distribution service node, the configuration |
| the classic analog TV digital television, many | | | | stream media services and storage devices, IP |
| technological innovations, but only the signal is | | | | set-top box user terminal can be + TV, can also |
| changed, but did not touch the contents of the | | | | be a PC. |
| mode of transmission media. Key Technology | | | | Cable digital television broadcasting network to the |
| IPTV Key Technology IPTV IPTV is the use of | | | | HFC networks, and traditional analog cable TV |
| computer or set-top box receiver + TV | | | | network architecture, the same as carried out in |
| completed Video on Demand Programming, video | | | | case of new interactive services (eg VOD), |
| broadcasting and Internet surfing functions. It uses | | | | network system will be different. Cable Digital TV |
| highly efficient video compression technology to | | | | VOD system includes VOD service, program |
| enable video streaming bandwidth 800Kb / s can | | | | editing, storage and authentication and accounting |
| be close to the television ratings DVD (usually | | | | system, the main storage and transmission of |
| DVD video stream bandwidth needs 3Mb / s), | | | | content is MP-2TS streams, using IPOVERDWDM |
| carried out on the next class of business, such as | | | | technology transfer based on DVDIP fiber optic |
| video on the Internet Live video Long-range real | | | | network, and IPTV's distributed architecture is |
| video on demand, production and other sources in | | | | different Cable Digital TV VOD system uses a |
| terms of programming, has a strong advantage, | | | | centralized services architecture, in the HFC does |
| is a new technical concepts. | | | | not need to configure the front-end points for |
| The problems of traditional television is the | | | | content storage and distribution of the video |
| traditional one-way broadcast television, which | | | | server, only need to place the receiver and the |
| greatly limits the audience and the interaction | | | | GAM modulated DWDM equipment can greatly |
| between television service provider, also limits | | | | reduce the system operating costs and |
| program of personalization and real-time. If a | | | | management complexity, the user terminal is a |
| viewer of the content being broadcast all the | | | | digital set-top box + TV. China has basically |
| channels are not interested, he (she) will have no | | | | formed the current digital TV industry chain, there |
| choice. Not only for the viewers is a loss of time, | | | | has been a large number of digital TV set-top box |
| on cable television service provider is also a | | | | manufacturers, front-end equipment |
| wastage of resources. In addition, the current | | | | manufacturers, systems integrators. |
| implementation of the specific content of | | | | 2. Business IPTV interactive features are very |
| programs broadcast in a specific period of time | | | | flexible, because the interaction with the IP |
| for many viewers is inconvenient. One night's | | | | network symmetry inherent advantages, its |
| audience might want to watch the news | | | | program in the net, can use broadcast, multicast, |
| sometime in the morning, and one ready to take | | | | unicast a variety of published methods. Can be |
| a particular train's passengers want to see a | | | | very flexible implementation of electronic menus, |
| home before the football game scheduled for the | | | | program reservation, real-time fast forward, |
| evening broadcast video. Now it seems impossible. | | | | rewind, terminal account and billing management, |
| IPTV features and applications IPTV is the use of | | | | programming and other functions. In addition to |
| broadband cable network infrastructure to TV as | | | | other content-based Inter net business can be |
| the main terminal for domestic electrical | | | | started, such as online games, e-mail, electronic |
| appliances, to provide through the Internet | | | | financial transactions. |
| protocol, including a variety of television programs, | | | | Cable Digital TV with broadcast, video on demand |
| including digital media services. Characterized in: | | | | must be achieved, if the original two-way HFC |
| 1) Users can get high quality (near DVD level) | | | | networks transform radio. Under normal |
| digital media services. | | | | circumstances, only the opening of the live |
| 2) user can have a very wide freedom in | | | | interactive information channel. If you want to |
| choosing the site to provide broadband IP online | | | | support video-on-demand digital TV, we also enter |
| video programming. | | | | the IP network through CALBEMODEM to |
| 3) realization of media and media consumers | | | | support, in fact IPTV, Hangzhou is the model |
| substantive interaction. IPTV broadcast platform | | | | number of IPTV systems. Judging from the |
| will be used in a new generation of home digital | | | | provision of content services, digital cable TV as |
| media, typical of the terminal, it can configure the | | | | IPTV. |
| user's selection features a variety of multimedia | | | | 3. Key Benefits IPTV's main selling point is the |
| services, including digital television, video IP phones, | | | | interaction, and the Inter net business expansion. |
| DVD / V CD Play, visit the Internet, e-mail, and a | | | | IPTV also can be very easy to television services |
| variety of online information consulting, | | | | and Internet browsing, e-mail, and a variety of |
| entertainment, education and business functions. | | | | online information consulting, entertainment, |
| 4) for network developers and program providers | | | | education and business functions together in the |
| to provide a broad emerging markets. At present, | | | | future competition in a dominant position. |
| China's telecommunications industry is growing | | | | Main selling point of digital high-definition TV image |
| rapidly and users of information services have | | | | quality. |
| become increasingly demanding, especially in | | | | 4. |
| broadband video information. Can say that China | | | | |