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研究生： 鄭守廷
Shou-Ting Jeng
論文名稱： 發展可支援網際會談啟始協議(SIP)攝影機之基礎架構
An Infrastructure for SIP-CAM Development
指導教授： 黃文吉
Hwang, Wen-Jyi
學位類別： 碩士
Master
系所名稱： 資訊工程學系
Department of Computer Science and Information Engineering
論文出版年： 2007
畢業學年度： 95
語文別： 中文
論文頁數： 66
中文關鍵詞： 會談啟始協議 、即時監視系統 、品質服務 、MPEG-4
英文關鍵詞： SIP, real time monitoring system, QoS, MPEG-4
論文種類： 學術論文
相關次數： 點閱：255  下載：9 
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    • 本論文的目的是建立一個可支援會談啟始協議(Session Initiation Protocol，SIP)的即時監視系統，並且提供多使用者存取影像之QoS功能，運用微處理器攝影機(IP-CAM)為基礎之相關研究。研究方法是利用SIP2.0規範，撰寫使用者用戶端(User Agent Client，UAC)程式與使用者伺服器端(User Agent Server，UAS)程式於嵌入式裝置，以及使用自行設計的主動可調適資源控制(Active-Adaptive Resource Control，AARC)機制，透過TCP/IP上的HTTP建立視訊環境，即時進行傳輸MPEG-4多媒體。SIP-CAM的AARC機制之方法為選擇性丟棄影像畫面，優點為可提高多人使用即時監視系統的穩定性，依照用戶端電腦效能來主動調整影像品質，給每一個使用者傳輸適當的視訊串流。

    The purpose of this thesis is to set up a real time monitoring system that can support SIP, and offer QoS function that many users access the video, use the relevant research based on IP-CAM. The research approach is to utilize SIP2.0 norm, write UAC program and UAS program in embedded device, and use AARC mechanism designed by myself, set up video environment through HTTP on TCP/IP, transmit MPEG-4 multimedia immediately. AARC mechanism method of SIP-CAM selectivity drops the video frame, the advantage, in order to raise the stability that many people use the real time monitoring system for the alternative, adjust video quality actively according to user's end computer efficiency, and transmit for every user proper video streaming.

    第一章 緒論............................................1 1.1　研究背景.............................................1 1.2　研究動機.............................................6 1.3　研究目的.............................................9 1.4　全文架構............................................10 第二章　相關研究..........................................11 2.1　微處理器(Micro Processor)簡介........................11 2.1.1　IMAGIA之MCP4010晶片...............................11 2.1.2　IMAGIA之MPG440晶片................................12 2.2　會談啟始協議(Session Initiation Protocol)簡介........13 2.2.1　SIP元件介紹.......................................13 2.2.2　SIP訊息與命名.....................................14 2.2.3　SIP運作流程與模式..................................15 2.2.4　會議描述協議(Session Description Protocol)介紹.....17 2.3　MPEG-4編碼簡介......................................19 2.3.1　MPEG編碼原理......................................19 2.3.2　MPEG-4編碼特性....................................21 2.3.3　IMAGIA之MPG-440編碼格式...........................22 2.4　QoS(Quality of Service)和串流服務簡介................22 2.4.1　視訊串流(Video Streaming)介紹......................24 2.4.2　應用層之品質服務控制(Application Layer QoS Control).24 2.4.3　擁塞控制(Congestion Control)......................24 2.4.4　流量成形(Rate Shaping)............................25 第三章　SIP運用於即時監視系統..............................26 3.1　SIP結合MPEG-4多媒體.................................26 3.2　SIP傳輸資料於HTTP...................................28 3.3　SIP訊息控制流程.....................................28 第四章　AARC運用於即時監視系統.............................32 4.1　主動可調適資源控制(AARC)方法簡介......................33 4.2　AARC主要模式與流程...................................37 4.3　AARC之畫面處理器....................................40 第五章　SIP-CAM系統架構與實作.............................44 5.1　SIP-CAM系統架構.....................................44 5.2　SIP-CAM實作........................................46 5.2.1　影像擷取部分......................................47 5.2.2　遠端連線部分......................................48 5.2.3　即時影像顯示部分...................................49 第六章　量測結果與分析....................................52 6.1　實驗環境............................................52 6.2　定義量測項目........................................54 6.2.1　CPU解碼時間.......................................55 6.2.2　最大間隔畫面遺失數目...............................57 6.3　分析結果............................................60 第七章　結論與未來發展....................................62 參考著作................................................64

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