Digital Audio And Video Content Intelligent Terminal System Research And Design

In recent years, digital media industry has been rising in global scope. It distributes digital multimedia content via IP network without any physical medium. This new consumption style is gradually changing people's daily life.As an important part of the Digital Media Products Integration and Network Distribution Platform, the Digital Media Products Intelligent Terminal directly gives access to massive subscribers. The terminal system manages and plays the digital video and audio contents which have legal copyrights. In this paper, the work in the intelligent terminal system is composed of three parts.First, a standard method to organize and manage the digital media products is proposed according to the analysis of the Digital Media Products Integration and Network Distribution Platform's requirement. We classify the digital media products into program that needs digital rights management and advertisement that doesn't need. The management includes both logic information and file entity. We also propose a standard operation flow of the digital media products' management and remote maintenance.Then, a media player under the digital rights management framework is built. We analyze three solutions on encrypting and decrypting the media files. And we implement the media player based on MPlayer, an open source media player. The media player can both play encrypted and unencrypted media files.Finally, the cross-platform intelligent terminal system software is implemented. We analyze the two key problems in cross-platform software development, the design method and the Chinese character management. We use Qt as our cross-platform library and utilize varies design patterns to construct the complicated architecture with brilliant graphic user interface.