Tags: IPTV set top box This article refers to the address: http:// Multimedia application platforms are usually implemented in the form of middleware, which is a widely used middleware standard specification. In addition, there are MPEG multimedia middleware. At present, there are at least 10 million set-top boxes based on GEM. More mature commercial middleware products in Europe include OpenTv's EN2, Liberate's TV Navigator for DTV, Enreach's Enreach TV for DTV, CanalPlus' MediaWinway, and NDS's NDS Core. According to relevant information, China's CCTV and provincial TV stations have used these middleware products. Although the above middleware is designed based on the home network, and both are applied to the digital TV set-top box, it seems that it has little to do with the current IPTV main operator in China. However, it is undeniable that many of the current IPTV set-top boxes have been transplanted and modified by digital TV set-top boxes, such as changing the access authentication method of set-top boxes, increasing or decreasing system modules, etc. Moreover, the application of DVB-IPI architecture to the telecommunications field will not There are too many difficulties. In short, the implementation of middleware is a good choice for IPTV terminals and platforms, because the middleware can develop rich and colorful applications, and anyone can develop based on it. In fact, middleware technology has been widely used in all walks of life. Various operating systems are essentially a middleware. For example, the Windows operating system shields various hardware devices, storage devices, etc. under the PC, so that the above various applications do not need to know the specific details of the underlying device. At the same time, Windows also provides a variety of interfaces and business development kits, so there is now a colorful, personalized Win-dows application. The success of Windows proves how important a middleware that meets development needs. It is believed that with the continuous development of technology and the continuous reduction of hardware costs, various unfavorable factors affecting the development of middleware for IPTV terminals and platforms will be gradually reduced, and IPTV middleware will be used in future applications. Therefore, whoever controls the commanding heights of the industry can win the initiative, and the success of Windows is a typical case. Question 2: How do IPTV set-top boxes "interoperate"? I often hear people say that the future IPTV set-top box will be placed in the mall. Anyone who buys a set-top box can take it home, plug it in, and connect to the TV to watch the IPTV program. This is “intercommunicationâ€. In fact, "intercommunication" has three levels of meaning. First, the set-top box is plugged into the power supply and connected to the access network and the device. The set-top box passes the authentication and authentication of the service platform. If it passes, it is considered to be "interworking". This is the interworking at the network level; Second, on the basis of the first case, it can realize the interoperability of the most basic services (such as live broadcast, EPG display, etc.), just like the telephone is connected after the telephone line is plugged in (the initial call only completes the call function); In the third case, "intercommunication" refers to the fact that, on the basis of the second case, any program can be viewed through the set-top box and enjoy any content after payment. This situation is also divided into several types. It can be seen that the "intercommunication" that the average person calls is the interoperability in the third case. "Interworking" is a question related to business models, performance and cost, scope of use, demand, and so on. Therefore, under different conditions, the degree and scope of "intercommunication" are different. To illustrate the problem, two typical application cases can be used to illustrate, one is a telephone that is used all over the world, and the other is a PC that is used all over the world. As we all know, a telephone can be reached in any corner of the world, and a telephone line can be used to talk to any telephone. Of course, it only provides call functionality. In order to provide more features, you need an intelligent network. It can be seen that global interoperability needs to sacrifice its function as a price. The enhancement of functions and the increase of business require more cost. Look at the PC, as long as it is equipped with the Windows operating system, global PCs can communicate with each other. This case shows that interworking requires a unified operating system (middleware) and a global IP protocol. On the surface, as long as there is a globally unified standard, PCs can be “interoperableâ€. But in fact, two PCs of different operating systems are generally not interoperable unless there is some kind of agreement between them (this is a problem with the business model). Similarly, business applications based on the same operating system cannot be "interoperable" with other applications. Therefore, "interoperability" is conditional, and it is always closely related to the function and cost of the product, the demand, and the like. The "interworking" of the set-top box can swim between "partial interworking" and "complete interworking". The uncertainty is not caused by technology, but depends on application requirements, business model, function and cost. If the world's set-top boxes are provided by a system and equipment provider, it is believed that "interoperability" is not an issue. But the question is who will provide it, because even a giant like Microsoft, its "Venus" plan ended in failure. Cast Resin Transformer,Power Transformer,Renewable Transformer,Power Transformer With Oltc Hangzhou Qiantang River Electric Group Co., Ltd.(QRE) , https://www.qretransformer.com