本文重點闡述了IPC 多媒體服務器模型實現的原理，通過對基于進程并發IPC 服務
器模型與基于I/O 多路復用IPC 并發事件驅動服務器模型優劣的分析和比較，得出在Qtopia構架下采用后者模型的理論依據。根據該模型的原理，詳細論述了媒體服務器實現的方法和仲裁并發應用沖突的策略。由于該模型不適合傳輸大批量數據，因此通過共享內存和信號燈的結合給出了基于I/O 多路復用服務器對流媒體播放的解決方案。
關鍵詞：I/O 多路復用；事件驅動服務器；共享內存

Multimedia IPC server of Smart phone designed under Qtopia framework Ju Yuan-qun Huo Lin (School of Computer and Electronics information, GuangXi University, NanNing 530004,China) Abstract: This paper expounds the principle of implement the IPC multimedia server model, analysis and comparing with the concurrent process IPC server model and the concurrent event-driven IPC server model based on I/O multiplexing, the model under Qtopia framework is based on the latter theory. According to the principle of the model, the methods of the media server application and the arbitration of concurrent application conflicts described in details. The model is not suitable due to a large amount of data, therefore, through the combination of shared memory and the signal lamp, the solution about playing media streaming based on I/O multiplexing server is given.
Keywords: I/O multiplexing Event-driven server Shared memory