Dual-mode transmission networks for DTV

Chinese digitalization process of television hasn ´t achieved anticipated goals as yet. No new value-added services for consumers, dissymmetrical development between service patterns and operation patterns, and the enormous input cost, are the dominant factors. To address these issues, a new dual-mode transmission networks for DTV (DMTN) is proposed in this study, in which the primary TV network is superimposed by a complementary framework based on broad-storage TV (BSTV). The necessity of congregating hot TV resources is discussed via analyzing the scale-free properties in DMTN. At the same time, the self-organized parallel broadcasting technology (SPBT) and uniform content locator (UCL) are studied in DMTN to utilize availably transmission channels and to help consumers to communicate with each other expediently. Experiment is designed and conducted, including system structure, functionality description, experiment parameters, and experiment results. Experimental results show that DMTN can provide not only traditional TV services on schedule, but also digital interactive TV services on demand using a single channel. DMTN is able to meet many individual consumers needs for video information, change the operation pattern of broadcast and television industry, and become an effective approach to advance the national informatization in low cost.