subject: Iptv Features And Application [print this page] IPTV is the use of broadband cable network infrastructure to TV as the main terminal for domestic electrical appliances, to provide through the Internet protocol, including a variety of television programs, including digital media services. Characterized in:
1) Users can get high quality (near DVD level) digital media services.
2) Users can have a very wide range of freedom in choosing Broadband Online websites offer IP video.
3) realization of media and media consumers substantive interaction. IPTV Broadcast platform will be used in a new generation of home digital media, typical of the terminal, it can configure the user's selection features a variety of multimedia services, including Digital TV Programs, video IP phones, DVD / VCD player, visit the Internet, e-mail, and a variety of online information consulting, entertainment, Education And business functions.
4) for network developers and program providers to provide a broad emerging markets. At present, China Communicate Business is growing rapidly and users of information services have become increasingly demanding, especially in broadband video information. Can say that China has basically met the conditions to develop IPTV technology and market conditions.
General, IPTV and digital television, both similarities and differences between them. Fiberhome Networks technical experts from the following described similarities and differences between the two.
1. Technology System IPTV system, also known as interactive television, its architecture includes Streaming Media Service, program editing, storage and authentication and accounting, and other subsystems, the main storage and transmission of the content of which is the core of MP-4 as the encoding of streaming media files, based on IP network transmission, usually set at the edge of content distribution service node, the configuration stream media services and storage devices, user terminals can be IP STB + TV, also can be PC.
Cable digital television broadcasting network to the HFC networks, and traditional analog Cable television The same network architecture, while the launch of new interactive business case (eg, VOD), network system will be different. Cable Digital TV VOD system includes VOD service, program editing, storage and authentication and accounting system, the main storage and transmission of content is MP-2TS streams, using IPOVERDWDM technology transfer based on DVDIP fiber optic network, and IPTV's distributed architecture is different Cable Digital TV VOD system uses a centralized services architecture, in the HFC does not need to configure the front-end points for content storage and distribution of the video server, only need to place the receiver and the GAM modulated DWDM equipment can greatly reduce the system operating costs and management complexity, the user terminal is a digital set-top box + TV. China has basically formed the current 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 IPTV interactive features are very flexible, because the interaction with the IP network symmetry inherent advantages, the program in the net, can use radio, multicasting, unicast a variety of published methods. Can be very flexible implementation of electronic menus, program reservation, real-time fast forward, rewind, terminal account and billing management, programming and other functions. In addition to other content-based Inter net business can be started, such as online games, e-mail, electronic financial transactions.
Cable Digital TV by broadcasting way, if you want to achieve VOD HFC must be original two-way radio network transformation. Under normal circumstances, only the opening of the live interactive information channel. If you want to support video-on-demand digital TV, we also enter the IP network through CALBEMODEM to support, in fact IPTV, Hangzhou is the model number of IPTV systems. Judging from the provision of content services, digital cable TV as IPTV.
