| With the development of wireless communication technologies, the quality of people's life has been gradually improved; the resulting interconnection-type portable wireless equipment is gradually integrated into the people's work and life. Because of using the Bluetooth wireless communication technologies in place of cable as the connections between the several equipments, the data transmission and exchange will be more convenient than the cables do.It will be very easy for people's life, work and play. The in-depth applications of Bluetooth audio transmission bring an unprecedented multi-media enjoyment to all the people. Now the research on how to use Bluetooth technologies to transmit stereo audio and video, also, to build a new generation of home entertainment networks, is now a new focus and an important direction of Bluetooth technologies research.This paper has a in-depth study of the Bluetooth protocol stack and the Bluetooth application framework based on Bluetooth wireless communications technologies, the point-to-multipoint audio transmission technology, and the point-to-multipoint video transmission technology. And this paper uses Bluetooth correlation technologies to build the multi-point audio and video systems.First of all, the paper has the research on the Bluetooth wireless communication technologies, including Bluetooth technology features, Bluetooth application architecture and specification, etc.The paper also has an analysis on key issues of Bluetooth multi-point audio and video transmission technologies. The scenarios of the point-to-multipoint audio transmission system based on single media stream, the point-to-multipoint audio transmission system based on multimedia streaming and the point-to-multipoint video transmission system are given after having the resolving the several key issues.Secondly, the paper gives the design and realization of the point-to-multipoint transmission system base on a single media stream audio transfer, after studing of the Bluetooth network topology characteristics, as well as embedded system design methodology.Thirdly, through the research of multipoint audio streams transmission technology of Bluetooth, the paper gives the design and implementation of point-to-multipoint transmission system base on Multi-audio streams.As the most important part of this paper,the system is a deepen application of the multi-point audio transmission. The overall design of the system, including the system's physical structure model, hierarchical structure model, logical structure model are given base on the demand analysis. At the same time, the article also gives the system hardware design, software design and test analysis of the system.In addition, the paper gives the synchronous multi-algorithm for multi-audio streams transmission.Finally, the paper has a research on the point-to-multipoint video transmission with Bluetooth technologies, and it improves the multi-audio streams transmission concept to the multi-video streams transmission. Also it gives the design of Bluetooth point-to-multipoint video transmission system.In this paper, a Bluetooth audio transmission technology in-depth application based on the realization of the point-to-multipoint multimedia streaming audio transmission system, gives users the Bluetooth wireless environment of high-quality surround sound audio services.And the point-to-multipoint video transmission system in the application of Bluetooth technology to a certain extent reflects of the innovation. As a result, it has some value for the research and development of the Bluetooth technology. |
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