本文選題：數(shù)據(jù)處理　切入點：SIP/SDP　出處：《中國科學(xué)院研究生院（沈陽計算技術(shù)研究所）》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：視頻會議系統(tǒng)使得異地與會人員可通過網(wǎng)絡(luò)加入同場會議,并以其快捷、低成本的優(yōu)勢逐漸受到人們青睞。較之單純文字交流,視頻會議中包括音頻與視頻信息,增強了會議的真實性和可理解度。同時,共享白板、共享文件等交互功能,更有利于參與者之間進行相互協(xié)作。遵循軟件工程中高內(nèi)聚低耦合、組件化的開發(fā)思想,將視頻會議客戶端分為信息管理系統(tǒng)和數(shù)據(jù)處理系統(tǒng)。論文研究的內(nèi)容為視頻會議客戶端數(shù)據(jù)處理系統(tǒng)的設(shè)計與實現(xiàn)。數(shù)據(jù)處理系統(tǒng)與上層(信息管理系統(tǒng))交互的同時,也與會議服務(wù)器進行交互。論文將系統(tǒng)設(shè)計為四層結(jié)構(gòu)來完成視頻會議客戶端數(shù)據(jù)的處理,依次為數(shù)據(jù)接口層、數(shù)據(jù)處理層、輔助控制層、協(xié)議處理層。數(shù)據(jù)接口層完成與上層間的數(shù)據(jù)交互;數(shù)據(jù)處理層完成對客戶端不同類型數(shù)據(jù)的處理;輔助控制層完善系統(tǒng)中的控制;協(xié)議處理層完成對已處理數(shù)據(jù)的發(fā)送和接收。為完成以上各層功能,論文分析設(shè)計所處理的數(shù)據(jù)類型;研究設(shè)計通用數(shù)據(jù)通信格式;研究并實現(xiàn)Socket協(xié)議完成相關(guān)類型數(shù)據(jù)的發(fā)送;研究并實現(xiàn)SIP/SDP協(xié)議實現(xiàn)會議創(chuàng)建、加入、退出;研究并實現(xiàn)G.729和H.264編解碼算法完成對音視頻編解碼;研究并實現(xiàn)RTP/RTCP協(xié)議完成音視頻數(shù)據(jù)的實時傳輸;研究設(shè)計音視頻同步算法保證媒體同步。最后,對系統(tǒng)進行實現(xiàn)與測試,驗證系統(tǒng)設(shè)計及功能的正確性,總結(jié)全文并展望后續(xù)工作。
[Abstract]:The video conference system makes it possible for participants from different places to join the same conference through the Internet, and is becoming popular with people because of its advantages of speed and low cost. Compared with simple text exchange, video conferencing includes audio and video information. At the same time, sharing whiteboard, sharing files and other interactive functions are more favorable for the participants to cooperate with each other, following the development idea of high cohesion and low coupling and componentization in software engineering. The video conference client is divided into information management system and data processing system. The content of this paper is the design and implementation of video conference client data processing system, while the data processing system interacts with the upper layer (information management system). The system is designed as four layers structure to complete the data processing of the video conference client, including the data interface layer, the data processing layer, the auxiliary control layer, the data interface layer, the data processing layer, the auxiliary control layer, the data interface layer, the data processing layer and the assistant control layer. Protocol processing layer. The data interface layer completes the data interaction with the upper layer; the data processing layer completes the processing of different types of data in the client; the auxiliary control layer completes the control in the system; In order to complete the functions of the above layers, this paper analyzes the data types processed by the design, studies and designs the common data communication format. Research and implementation of Socket protocol to complete the transmission of relevant types of data, research and implementation of the SIP/SDP protocol to create, join, exit, research and implement G.729 and H.264 coding and decoding algorithms to complete audio and video coding and decoding. Research and implement the RTP/RTCP protocol to complete the real-time transmission of audio and video data; study and design audio and video synchronization algorithm to ensure media synchronization. Finally, implement and test the system to verify the correctness of the system design and function. Summarize the full text and look forward to the follow-up work.
【學(xué)位授予單位】：中國科學(xué)院研究生院（沈陽計算技術(shù)研究所）
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TN948.63

【共引文獻】

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