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Chinese digital television terrestrial broadcasting system standard DMB-TH - GB20600-2006 digital television terrestrial broadcasting transmission system frame structure, channel coding and modulation \Terrestrial digital TV broadcasting is a highly efficient, low cost, the welfare of a digital television broadcasting coverage means. AVS video standard (GB/T20090.2) is built based on our own innovative technology and international open technology standards, mainly for high-definition and high-quality digital television broadcasting, network television, digital storage media, and other related applications, our grasp the main intellectual property, patent licensing model is simple, low cost. We design complete the dual GB digital mobile TV, successful use of the field of digital television in China, the two advanced technology to support DMB-TH channel demodulation and AVS DRA source coding standard can receive is a national standard for terrestrial digital broadcasting, processing the advanced audio and video coding standards including AVS including program receiving platform, and to provide digital television audio and video services to the user. Its marketing applications to enhance the technical content of the domestic digital TV, to promote the development of the digital TV industry, to strengthen the level of China's digital TV industry, effectively breaking the monopoly of foreign digital TV patent technology. As research subjects in order to achieve the dual GB digital mobile TV content. Main research brief introduction to the overall system design and hardware design based on the construction of software systems, TV broadcast, data broadcasting, multimedia player, an electronic service guide, emergency radio, push the download store, encryption controllable functions. According to the requirements of the system portability and modularity, using a layered framework structure design and modular programming methods. In accordance with the layered architecture, the functions implemented in the software architecture, and layers of software design; program search module SI parsing module NVM allocation management module implements the function call mechanism, function interfaces, data structures, the definition of Detailed analysis and design. Key technologies AVS decoder for this product in another part, the thesis, and transport stream analysis technology, audio and video decoding technology. Products designed to achieve a single-carrier and multi-carrier receiving terrestrial digital TV in full mode, and is compatible with MPEG2 the AVS codec standards, the first in the country to achieve the dual GB digital TV standard terminal products. Actually promote the use of proven, built in accordance with the requirements of the hierarchical modular system, stable and efficient digital TV reception, decoding, and the functions defined in the mobile TV. System design and optimization program search, SI parsing module, NVM allocation management gives the better of innovative solutions to meet the market demand for products fully meet the needs of consumers, access to DTV Alliance, AVS Industry Alliance and other organizations praise.
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