Editor's Note: July 14 China Digital Digital TV Middleware Leader Dr. Liao Hongtao to DVB CN studio introduced the digital world TV History of the development of middleware and China Digital TV middleware, standards and trends, the definition digital TV middleware and development at home and abroad.
Definition digital TV middleware development at home and abroad
Definition digital television middleware Digital television middleware for an official, or there is no standard definition, there's digital television middleware system, generally refers to embedded in the TV receiver terminal, located above the receiving device driver layer software, interactive applications and system isolation resources software layer. Middleware allows application independent of the receiver hardware and software platform. Thus, in the same television network, with different hardware components and design architecture STB Can run the same applications; the same time, different software companies can develop based on the same application programming interface, and run on a different set-top boxes.
Middleware allows TV operators to use set-top box costs and significantly reduce application costs, and enhance marketing edge and increased digital television penetration.
Although the middleware is installed in the digital television receiving equipment, but its front end to receive and process data and is closely related to broadcast from the receiver front-end system provides the data format, or front-end system and receiving terminal on the data format, broadcast agreement must be concerted.
Foreign mainstream middleware Value-added business operations, is the television Digital The starting point and ultimate aim of foreign digital TV operator, to begin the start since there is embedded in the middleware in order to carry out value-added services to provide protection; early foreign middleware platform are: OpenTV, Mediahighway (scripting language version), NDSCore (visit device Edition), Access (Japan), Opera, Espial, Liberate, MHEG-5 engines from 1998, DVB digital television middleware development standards into the different platforms to Java-based, can also support HTML and JavaScript The MHP standard scripting language up. In early 2001, released MHP1.0 MHP middleware specification supports with: OSMOSYS, Alticast, Mediahighway (Java version), IDway, etc.
Foreign middleware standard Now largely foreign-based GEM standard middleware kernel extension. GEM is a subset of MHP is to unify the League of American OpenCable OCAP middleware specification developed by now evolved into the ACAP specification, while supporting Java Virtual Machine and HTML engine; Japan ARIB BML middleware specification also gave up using GEM as the basis for its middleware standard; Brazil announced Ginga-J middleware specification is also based on GEM's. China since early 2002 to develop middleware specification, is also used in the technical system based on GEM
The current situation of China's middleware standards
2006 11 16th: National Radio Standard Board issued a digital TV middleware (system part) draft, December 25, 2007 GB Digital TV middleware specifications (receiving equipment part) final version has been adopted Audio and Video Standard Authority, Ministry of Industry, Video Electronic Products Association and other government departments for approval; in June 2008, the national standard digital television middleware standard (receivers) appointed by the national standard of review; now, in the final approval stages of promulgation.
Far as I know to support national standards for digital television middleware platform has been at the provincial level for large-scale commercial networks, the number of set-top boxes to reach nearly 1.9 million, the middleware platform for value-added services provided free with the conduct of compare the platform, and now there are more and more companies are developing national standards for digital television middleware platform. I am China Print Net writer, reports some information about hannah montana wig , long blonde wigs.
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