The Research About Mobile Terminal Midea Player

In this dissertation, a mobile terminal media player is designed. This system is developed based on high performance embedded processor XScale PXA255. The MPEG-4 technology,embedded Linux, and stream media technology are used in designing the system. By this Media player, we can use the VOD all over the network.The media player has the characters of miniaturization,low power,stable and portable.In chapter 1, a comprehensive description about the significance of the researchwork is given. The current research status of multimedia player, and stream media technology are also described.In chapter 2, a description about the programming techniques is given. The multimedia compressing technology — mpeg4, the stream media real-time transfer protocol and the technology about wireless network are also discussed in detail.In chapter 3, the hardware system design is discussed.In chapter 4, a discussion about the software system design is given, including the total structure of the system design, communication flow and control of the system states, and also including all the functional modules design, like network receiving module, video decoding and displaying module, audio decoding and displaying module.In chapter 5, the Mpeg-4 video decoding is presented in detail.In chapter 6, descriptions about the software optimiziation and software testing are given.In chapter7, the current research status and the main research conclusion are summarized. The prospect of further research is also proposed.