IPTV overview

1. Introduction to the "pencil + rubber" combination as a "physical", then "integrated innovation and IP TV" portfolio contains a "physical and chemical integrated innovation." 　　It not only contains a similar to the "pencil" with "rubber" itself functional "IP" and "TV" simple combination, but also because of the "IP" and "TV" itself has characteristics which combined contain new feature functionality. IPTV will be very familiar with the two words "IP" and "TV", which attracted more and more attention. Because into IPTV's two words a represents network future communication may be used by the main agreement, another is by far the most extensive audience surface information business one of these two words are linked to the IT field in two very important management and operators — communication network providers and radio and television programme provider, IPTV is starting with business operators, technical aspects, user experience respects has its own unique place. This also caused from a different side to discuss the different views of IPTV. 　　This article from IPTV may relate to the different roles of discussions with some of the issues related to IPTV. 　　2, meaning although IPTV IPTV has become the industry-2005 universal concern one of spots and focus, but the definition of the IPTV itself in terms of standing at different angles can give a different meaning. 2.1 IP network TV (1) IPTV itself is "IP" and "TV" IPTV synthesis, as "TV over IP," literally understood directly however. 　　The intuitive meaning that is using the IP network to deliver TV programmes, also TV business itself only in the transport network or transmission technology has changed, and the business itself without any changes. (2) from a combination of IP in the IPTV, while IP is a network layer protocol, but from the initial design concept and extend IP over Everything, if you set the TV without change of meaning, is TV in can host IP protocol of all communications networks (including WDM, SDH, Ethernet, Home Network, WLAN LAN, etc.) through the use of the IP protocol to transfer. 　　That is, from a user perspective, through a variety of access network collateral to receive TV program information. (3) traditional TV by TV television network (wireless TV networks and cable TV network CATV as collateral) receive TV program information. But there is no ordinary TV and IP-based network relationship of any kind. 　　With the help of IPTV, and IP networking set-top box TV Terminal becomes directly displayed come from the IP network of terminal equipment. 　　2.2 interactive audiovisual services (1) to adopt IP this two-way network communication protocol of communication networks, will change the traditional TV can only be a passive receiver, users can take advantage of IP-based two-way network itself on the receiving program content to the appropriate control (including selecting a program broadcast time, fast forward, rewind, pause, etc.), traditional one-way TV into an interactive content playback. (2) traditional TV shows are usually a limited number of licenses with the Government and a strong technical and economic power of television to deliver video content, while ordinary users don't have also not possible to own produced video content online play to other friends or network users. 　　In other words, IPTV offers users making itself the video information publication to other users. 2.3 CSS… attempts of existing communication networks, real-time interactive voice fax,, Conference calls or meetings TV business use telecommunication network complex to host the TV broadcast, broadcast by radio and television network hosting business, computer and as the main communication terminals, to transfer data information as the main business of data communication mainly by IP network or a computer network hosts. These three business and three networks in business and hosting network sometimes can cross. As a business in a typical telephone network complex public (PSTN) use your modem in the computer to complete the data transfer and Exchange. Use structures to IP network media gateway controller and media gateways in IP networks to provide real-time, interactive IP voice communications business. While this article talking about IPTV, its most basic business is in the IP network to provide TV business. 　　If the real-time interactive IP voice services and IPTV platforms, plus IP networks own computer network data communication service features, interactive, real-time voice, video and data services integration in IPTV, as IPTV makes three networks (telecommunications networks, computers, Internet and television network) fusion of attempt. 3, different roles at IPTV IPTV business industry chain relates to content providers, content integration, service providers, Internet providers, middleware providers, product manufacturers and end users. 　　The industrial chain on the different roles of IPTV has its own expectations and perceptions. 　　3.1 users watching IPTV in General, users want to spend the least access to most services, including in any place, any time, by any means (including all types of terminals, a variety of access modes) you can at the same time or separately, easy access to quality-assured a wide variety of business. Users will be "IP" and "TV" together new placed very high expectations, want IPTV to them new business, and hope to have the use of business given new features: (1) for the unused computer users, want to make use of IPTV business owned by it into the TV can be connected to an IP network IP network Terminal. 　　And use the TV Terminal to use IP network provides your business. 　　(2) all users want IPTV can provide them with the freedom to choose the convenience of viewing content, while at the same time on the watch of the appropriate control (such as fast forward, rewind, pause, etc.), and not just passively watching the television broadcast program content. 　　(3) the user not only want to use the television set to watch video content, also mobile you want to use other Terminal watching video content. 　　(4) users want not violate state regulations, the IPTV platform for its home-made video content available to other users, to facilitate mutual exchange and learning. 3.2 content providers see IPTV IPTV for content providers to release their production of content provides the new channel. But at the same time as the channel for more content providers are using is introducing more competitors. At the same time, security for IP network itself is limited. 　　From the point of view of content providers want IPTV: (1) the content available to more users, while providing appropriate charging methods. 　　(2) provides information about digital rights-protected content. 　　(3) collect user feedback information. 　　(4) with IPTV service platform making suitable for IPTV business content. 3.3 equipment manufacturers at IPTV IPTV as a new business in business you need to use a feature of the new equipment to provide the user with a business. At the same time, users in the use of IPTV business not then need to configure the appropriate terminal equipment or assistive devices. As a new type of business may need some specific features of the new device, with some innovative opportunities. IPTV service provision for IP networks, raise a number of new requirements, the need to set up IP network for network devices, access device to be improved. Make traditionally provided IP network equipment manufacturers need to improve existing products to meet the needs of providing IPTV business, these equipment manufacturers with production IP phone equipment expertise may be based on existing products and unique business IPTV combine research developed offers a variety of business equipment. 　　For traditional manufacture of TV-related device manufacturer, you can use TV equipment will become IP network terminal equipment, research and development of a suitable IP network-related equipment. 3.4 from IP network operators perspective IPTV IP network from commercial, not a very good profit mode. Most IP network operators usually charge users connected to the network access fees to support the network up and running. As technology advances, IP network bandwidth is increasing, so that it is capable of hosting video streams the information transmission. At present, the IP network video streams in the network traffic on a considerable scale. For IP network operators IPTV business can increase business IP network itself, while at the same time and type of IP telephony and traditional IP business integration to promote IP network to the entire business network evolution, promote the integration of the three networks to meet the needs of the user on a wide variety of business needs of a flexible combination. 　　Through the delivery of IPTV business, understanding the user's specific needs for business, timely to provide users with personalized service in order to increase the operational income of IP network, to promote network operator business transition. 3.5 from service provider perspective IPTV business as the primary data provided by the commercialization of IP network, a growing number of Internet content provider (ICP) and Internet service provider (ISP). Does not appear in the IPTV, ICP mainly provides the user with a text and still images as the main content of the content information. As warmly welcomed by our video content information that content providers have been carried out in a variety of attempts. As technology continues to advance Internet information service provides users with a variety of types of information are also provided including e-commerce, online trading business. These business needs in data sheets provide some video form of information. IPTV-related technology matures for information service provides to provide video class information and tools to provide IPTV business service provider provides opportunities. 　　IPTV service providers can be IP network operators can also be information service providers. 3.6 from standards of progress at IPTV IPTV as a distribution multimedia business class, and the amalgamation of the three networks of many technologies, to enable IPTV business as successful as needed on the system and the use of technology to drive standardization work. In view of the IPTV related to IP and television two large areas, some of the international standardization organization for IPTV business has developed a series of standards specifications, such as the ETSI and the European Broadcasting Union developed ETSITS 102 034V.1.1 the digital video broadcasting (DVB): based on IP network transmission MPEG based-2 DVB specification for business ". ITU-T also will develop IPTV business related standards into its work plan; United States ATIS IPTV Interoperability Forum are also working on IPTV requirements and architecture; China's telecom operators in developing enterprise content of IPTV business standard, the CCSA also input power to develop a range of IPTV standards. 　　But due to IPTV service provision also covers the content information of digital rights management and profitable business model, and other matters, the complete IPTV series standard formally completed also requires some time. As a new business forms of IPTV business itself to value chain links brought new opportunities and challenges. The business development will in some ways changed the entertainment, shopping, education, etc. As with all of the new thing in their development processHave not encountered a variety of problems and difficulties, there is a need to study and seek appropriate solutions. So far the IPTV still in research and development, the need for further efforts to make its smooth development and for the parties to bring the expected benefits.