數位家庭行動影音串流系統之設計與實作

家庭網路的盛行以及數位化內容的蓬勃發展，人們在21世紀步入了數位生活，而目前(2004年) 數位家庭生活已逐漸為大眾所接受，各軟硬體大廠全都積極投入此市場，而最終目的便是讓人們能夠簡單且容易地享受數位化的生活以及資訊服務的便利。本論文採用DLNA數位生活網路聯盟 (Digital Living Network Alliance) 所訂下的數位家庭電子產品的互通規範，建立家庭數位多媒體影音娛樂平台，讓使用者更輕易地將數位資訊家電、數位內容及資訊服務之間做更順暢的連接，並且利用控制器能夠簡便地選擇其所欲觀看之影音內容。建置此系統之應用程式執行於Linux 作業系統之上、使用TCP/IP以及裝置搜尋技術（Universal Plug and Play，UPnP）並且在之上利用HTTP以及即時傳輸協定（Real-time Transport Protocol，RTP）做為影音串流服務之控制，本論文提出於多媒體伺服器（Digital Media Server，DMS）對多媒體檔案內容作適應性之處理，並且對多媒體播放器（Digital Media Player，DMP）利用快取機制並根據本身硬體能力調整多媒體影音內容的播放模式，達到多媒體內容服務品質保證（Quality of Service，QoS）的整合性系統。

關鍵字

萬用隨插即用；數位生活；數位家庭；無線網路；隨選視訊

並列摘要

Now, people get into a digital life style by the prevalence and development of Internet and digitalize content. Now the digital home living is more and more popular. Every hardware factory invests positively in creating an environment that people could enjoy the digital living and the convenient of information technology more easily and convenient. In this research uses the guideline that propose by DLNA, to establish a multimedia digital home living entertainment platform, which makes it easier to connect the information appliance, digital content, and information service. Users can simply choose their favorite multimedia content by the controller. This platform all application build above Linux operation system, uses TCP/IP stacks and device discovery technology (Universal Plug and Play, UPnP) . Using real tine transport streaming protocol (RTP) suites to control the network flow. In this research, we embedded the network flow adaptive of transfer the digital content processing on Digital Media Server, DMS. In another side, we uses cache and adaptive of hardware ability on Digital Media Player, DMP to play digital content more smooth, to make the platform to attain quality of service(QoS) for playing multimedia content.