臺灣博碩士論文加值系統

近年來隨著寬頻網路的普遍以及資訊家電的興起，數位家庭的應用與服務也逐漸開始呈現快速的成長，尤其是家庭影音娛樂方面，利用有線或無線的軟硬體裝置在家庭網路中建置播放影音的娛樂環境，目前數位家庭網路應用技術方面，多數的消費性電子廠商皆以微軟及Intel大力推動的通用型隨插即用協定(Universal Plug and Play)為主要的關鍵技術，讓不同廠牌間的軟硬體設備不需要額外的設定就可以互相搭配及支援多媒體影音的播放。

以傳統的家庭式劇院播放模式為例，影像及聲音其實是利用同一個光學儲存媒體作為資料存取媒介，播放時會經由多媒體播放裝置，如：VCD、LD、DVD及最新的藍光播放器…等，把影像及聲音分離出來，其後再交由專門的影像及聲音處理器呈現到螢幕及喇叭，而現今及未來的數位家庭網路環境中，聲音及影像來源可能分別由不同的有線或無線裝置提供，以因應不同的播放需求，其影像及聲音裝置可能因為使用者有快進或是倒轉的行為模式影響，進而導致影像及聲音裝置在傳輸播放的期間產生不同步的現象，讓整個播放的過程不順暢。

因此我們提出以維持原有多媒體網路播放架構為前提，且不需額外的硬體建置成本，加入我們的影像及聲音裝置同步校正方法，應用通用型隨插即用協定作為同步資訊的溝通協定；在多媒體內容播放的期間，影像播放裝置能夠會週期性的主動檢測聲音播放裝置是否有不同步的情況發生，在短時間內快速的改善並降低由使用者行為產生的影音不同步現象。

On Multimedia Digital Home Networks, an audio player may be separated from the video player. Due to forward or rewind a video, it makes the video player and the audio player asynchronous. Based on the original UPnP AV architecture, a synchronous mechanism is proposed in this paper. With exchanging both status of the video player and the audio player in UPnP messages, the synchronization is accomplished.

摘要 i
ABSTRACT ii
致謝 iii
圖目錄 v
表目錄 vii
第一章 簡介 1
第二章 背景知識與相關研究 5
2.1. 通用型隨插即用協定( UPnP) 6
2.1.1. 通用隨插即用協定元件關係 7
2.1.2. 通用型隨插即用協定堆疊結構 8
2.1.3. 通用隨插即用運作流程 11
2.2. 通用型隨插即用影音(UPnP AV) 18
2.3. 多媒體串流技術簡介 20
2.4. 相關研究論文及軟體應用 22
第三章 研究情境與研究方法 27
第四章 系統實做與結果分析 34
4.1. 系統架構 34
4.2. 實驗方法 38
4.3. 實驗結果及說明 39
第五章 結論 46
參考文獻 47

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