| In recent years, internet technology and its application have developed rapidly in the world. According to the China Internet Network Information Center (CNNIC), the number of Chinese netizens had reached 420 million by the end of June 2010, an increase of 2.9% over last year, with China's internet scale ranking first in the world. As the data released by the Ministry of Industry and Information (MIIT) has shown, the total number of Internet broadband subscribers has exceeded 360 million by the end of June 2010. Data shows that more and more basic telecom enterprise subscribers tend to use broadband. That is to say, China's internet market has already achieved an increasingly expanding, large number of consumers, and the condition of its network bandwidth is also improving, which provides the precondition for a better Internet application.Along with the rising level of consumption as well as the variation of consumption needs, consumers are no longer satisfied with watching the programs transmitted by Broadcast and TV Network. Data from CNNIC shows that more and more consumers are using Internet to get the multimedia audio and video entertainment and information, and a great number of people are spending more time sitting in front of computers than watching TV. The reason lies in the rich and attractive Internet resources and multimedia entertainment. The advantage from the network has challenged the traditional TV medium; however, the forward-type computer operation has significantly affected the consumer's entertaining experience. Therefore, as the home entertainment media center, TV should be combined with internet to transfer the rich resources to the living room for a better visual feast, which also further consolidates its position as the home entertainment media center, at the same time gives consumers a better visual and audio experience. The combination of TV and network application, providing users with more and better interactive multimedia entertainment, which is different from traditional television broadcast, is not only the urgent need of the market, but also the purpose and significance of this study.After China put forward the "tri-networks integration", many appliance manufacturers took it as an inevitable trend for IV development that internet would serve as an access for broadcasting. Therefore, the Venus Plan of Microsoft, Huanyue Platform of Intel, EZ Station and others were all the plans of manufacturers to move internet into the living room and combine TV with internet. However, given the bandwidth---only 56kbps---most internet subscribers used dial-up access, limited internet resources---most were characters and pictures, and the low level of processor and storage capability, all the products were only capable of sending and receiving e-mails and browsing net pages, not to mention that they could barely get the page fast. Though the operation was the same with that of computer, it largely impacted the development of Network TV. Therefore, those copycats of computers failed to achieve the goal of entertaining family subscribers, as that were the function of traditional TV sets. As electrical equipment in the living room, TV sets could not be properly operated as computers, with its function and operation taken into consideration. However, given the overall condition at that time, new applications could barely be developed. Thus, the products have been left in the fringe of industry---there were manufacturers trying to create a success story, but no one fulfilled their dreams.With the rapid infiltration of digital and internet multimedia technology into TV area, the "Network TV" has become a thing in the past---at best a video terminal which has lots of problems in function, interface, and subscriber operation. It was actually a piece of computer's Intel X86 master stuffed in the TV system, which accessed internet resources through IE browser. The disadvantage is obvious.1. The forward-type operation, due to the complication of IE interface, could not meet the needs of TV subscribers, nor was it in line with their usual practice.2. All the content was difficult to access in the absence of a fixed access system.3. The cost of the system was high.4. The products lacked a clear positioning so that it was difficult to have long-term subscribers.What is new in this paper is that based on the AML72XX chip family of embedded system architecture, it creates a Network TV plan that can well serve the users, and supports the internet resources controllable mechanism and online upgrading systemThe design in the thesis can solve problems of the Network TV in the past, such as complex operation, traditional PC model, and combined internet, multimedia, and telecommunication. The users only need to plug in to watch online report, such as weather, news, stocks, movies on the Internet, television and entertainment and they can quickly download films and videos. They can also upgrade their Network TV online to study, sing in the online karaoke, and play interactive games, and so on.In the design of this thesis, internet technology and combined with TV sets, TV manufacturers can provide services for Network TV, and thus form a new contact between themselves and subscribers. The new contact not only further attaches the subscribers to them by mutual benefit, but also makes it possible to form a channel to provide more service to subscribers. The management of the channel will also make it possible for a brand new business model. Therefore, broadly speaking, Network TV not only stands for a concept of terminal but also a concept of system including terminal, content and service, which is significantly meaningful for the subsequent development of network television. |
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