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研究生:黃惠婉
研究生(外文):Huey-Wan Huang
論文名稱:可提供更多互動功能之VoD架構研究
論文名稱(外文):The Mechanism for VoD to Support more User Interactions
指導教授:王謙王謙引用關係
指導教授(外文):Chian Wang
學位類別:碩士
校院名稱:國立彰化師範大學
系所名稱:資訊管理研究所
學門:電算機學門
學類:電算機一般學類
論文種類:學術論文
論文出版年:2004
畢業學年度:92
語文別:中文
論文頁數:57
中文關鍵詞:隨選視訊使用者互動功能廣播策略代理伺服器
外文關鍵詞:VoDuser interactionbroadcastingproxy
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本研究之目的是希望能讓隨選視訊(VoD)提供更多的互動功能,我們所討論的互動功能包括:jump, reverse, scale, freeze_resume和A-B repeat。為了能提供較多的互動功能,我們修正傳統Client-Server的VoD架構,改成Client-Proxy-Server的3-tier架構,在Client端我們設定影片暫存器(Buffer)的自我控制策略,一方面做為Client能提供更齊全的互動功能的基礎,一方面據以做為與Proxy之間的訊息溝通;在Proxy與Server之間,我們提出一個可以使影片傳輸更彈性和快速的廣播策略。
本研究針對上述五項互動功能做測試,在實驗上可獲得效果不錯的回應時間,另一方面並分析我們所提出的廣播策略,這樣的播放策略也可比文獻中所討論的廣播策略省時。

This thesis presents a mechanism for VoD to support more user interactions. These user interactions include jump, reverse, scale, freeze_resume, and A-B repeat. In order to implement all user interactions, we modify VoD scheme from 2-tier of client-server to 3-tier of client-proxy-server. In client site we prepare a client-buffer-control mechanism, not only run these user interactions, but also feedback control message to proxy. In server site we prepare a broadcasting method can satisfy time request.
The results indicate that the testing of five user interactions in reasonable response time. And the broadcasting method of we proposition, can save video transmission time.

目錄

摘要 I
Abstract II
誌謝 III
目錄 IV
圖目錄 V
表目錄 VI

第一章 緒論 1
1.1 研究動機與背景 1
1.2 研究目的 5
第二章 文獻探討 6
2.1 互動功能的種類 6
2.2 降低頻寬需求的影片傳輸機制 7
2.3 代理伺服器的研究議題 12
第三章 Client Buffer Control & Proxy Feedback機制 17
3.1 架構說明 18
3.2 元件說明 19
第四章 Client端的元件 21
4.1 Interaction Actor 21
4.2 Buffer Actor 23
4.3 Player Actor 30
第五章 proxy端的元件 31
5.1 Interaction Worker 31
5.2 Buffer Worker 33
第六章 Server端的元件 38
6.1 Video Provider 38
第七章 實驗與分析 41
7.1 實驗環境 41
7.2 互動功能效能模擬 41
7.3 廣播策略分析 44
第八章 結論和未來工作 47
8.1 結論 47
8.2 未來工作 48
參考文獻 49
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