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研究生:陳衍詳
研究生(外文):Yen-Hsiang Chen
論文名稱:在ultraVNC下整合雙向語音及影音傳輸之多媒體系統
論文名稱(外文):Integrating Bi-Direction Audio and Video Transmission for ultraVNC
指導教授:阮聖彰
指導教授(外文):Shanq-Jang Ruan
學位類別:碩士
校院名稱:國立臺灣科技大學
系所名稱:電子工程系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2008
畢業學年度:96
語文別:英文
論文頁數:46
中文關鍵詞:虛擬網路計算即時傳輸協定多媒體網路音訊視訊
外文關鍵詞:Virtual Network Computing (VNC)Real-Time Transport Protocol (RTP)MultimediaAudioVideo
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近來,遠端網路計算(VNC)已經成為網路上遠端存取技術上熱門的應用,應用在像是遠端數位教學或是協同合作系統上。然而,卻仍無一些多媒體的應用加強遠端網路計算的應用。
在本篇論文中,我們提出了一個基於遠端網路計算和及時傳輸特性情況下,實作一個雙向語音及影像傳輸的多媒體系統。在此架構之下的系統,可以有效地應用於具有影音傳輸功能的協同合作系統上。在我們的實作上,我們採用了不同聲音和影像壓縮方式去評估整個系統架構,在不同的壓縮演算法的評估和不同的編碼型態,可以針對不同的網路頻寬動態的調整所要採用的演算法,因而得到較佳的傳輸效果,實驗結果也顯示出良好的傳輸效果。本篇論文所提出的以VNC為基礎的多媒體系統不只適合在協同合作系統上,而且在網路上傳輸影音因為及時傳輸的特性,因而得到很好的傳輸品質,更因為其瘦客戶端的特性,可以應用在數位智慧家庭的嵌入式系統的手持裝置上,作為數位家庭應用上的雛形系統。
Recently, VNC (Virtual Network Computing) has become one of the popular remote
access techniques for Internet applications such as remote distant learning and
collaborative application systems.
However, there is no any multimedia functions have been implemented to enhance
the performance.
In this paper, we presents a framework based on remote frame buffer
(RFB) and real-time transport protocol (RTP) to provide real-time
video and audio transmissions for multimedia applications. The
framework can be applied to build distance collaborative
environments with multimedia and RTP features efficiently.

In our implementation, we used different compression criteria to
evaluate the proposed system architecture. After adopting different
types of compression algorithms and encoding length to estimate the
bandwith of internet connection. Then we could obtain a proper way
for our system to transfer. The experimental results show that the
good transformation quality.
As a result, the proposed VNC based multimedia system is not only very
suitable for a collaborative environment but also highly
suited for multimedia transmissions since its real-time characteristics.
Finally, it is worth noticing that the presented VNC based multimedia architecture is especially suited for embedded systems, intelligent homes, and
could be used for mobile hand-held devices due to its thin-client properties.
1. Introduction
2. Virtual Network Computing
3. Real-time Transport Protocol
4. Analysis of System Architecture
5. Multimedia system Implementation
6. Conclusion
[1] Real-time protocol : http://www.ietf.org/rfc/rfc3550.txt.
[2] ultravnc : http://www.uvnc.com/.
[3] Bourov S. Eckerlin G.-Elsen E. Bacher, R. and Kammering, Remote control and monitoring of accelerators and detectors in a global facility (gan/gdn), Proc. 15th IEEE-NPSS Real-Time Conference, April 29 2007{May 4 2007, pp. 1-4.
[4] J. Brooke, T. Eickermann, and U. Woessner, Application steering in a collaborative environment, Proc. ACM/IEEE Conference Supercomputing, 15-21 Nov. 2003, pp. 61-61.
[5] C.Y.Y. Cheng and J. Yen, Virtual learning environment (vle): a web-based collaborative learning system, Thirty-First Hawaii International Conference on System Sciences, vol. 1, Jan. 1998, pp. 480-491.
[6] P.M. Corcoran, F. Papal, and A. Zoldi, User interface technologies for home appliances and networks, IEEE Trans. Consumer Electron. 44 (1998), no. 3, 679-685.
[7] M. Herscher and R. Cox, Voice programming of numerically controlled machines, Proc. IEEE International Conference on ICASSP '77. Acoustics, Speech, and Signal Processing, vol. 2, May 1977, pp. 452-455.
[8] Wim Lammotte Jori Liesenborgs and Frank Van Reeth, Voice over ip with jvoiplib and jrtplib, IEEE Annual Conference on Local Computer Networks, 2001, pp. 346-347.
[9] Jori's RTP library, http://research.edm.uhasselt.be/jori/page/index.php.
[10] Kaplinsky and K.V., Vnc tight encoder-data compression for vnc, Proc. 7th International Scienti‾c and Practical Conference of Students Post-graduates and Young Scientists Modern Techniques and Technology, Feb. 2001, pp. 155-157.
[11] K.V. Kaplinsky, Vnc tight encoder-data compression for vnc, Proc. 7th International Scienti‾c and Practical Conference of Students Post-graduates and Young Scientists Modern Techniques and Technology MTT 2001, 26 Feb.-2 March 2001, pp. 155-157.
[12] Colin Perkins, Rtp : audio and video for the internet, Addison-Wesley, 2003.
[13] F. Papal P.M. Corcoran and A. Zoldi, User interface technologies for home appliances and networks, IEEE Transactions on Consumer Electronics, vol. 44, Aug. 1998, pp. 679-685.
[14] Anthony Steed Oliver Otto Robin Wol®, Dave J. Roberts, A review of telecollaboration technologies with respect to closely coupled collaboration, International Journal of Computer Applications in Technology, vol. 29, July 2007, pp. 11-26.
[15] V. Schmidt and J.A. How, Remote participation infrastructure in the European fusion laboratories, IEEE Transactions on Nuclear Science, vol. 49, Apr. 2002, pp. 32-536.
[16] T. Hase T. Mizuno T. Haraikawa, T. Sakamoto and A. Togashi, Vnc: a proposal for internet connectivity and interconnectivity of home appliances based on remote display framework, IEEE Transactions on Consumer Electronics, vol. 44,Aug. 2002, pp. 512-519.
[17] Q. Sta®ord-Fraser K.R. Wood T. Richardson, T. Richardson and A. Hopper, Virtual network computing, IEEE Internet Computing, vol. 2, Jan. 1998, pp. 33-38.
[18] Su Tzong-An, Distant vcr - a virtual classroom for distance learning, Proc. First IEEE International Symposium on Information Technologies and Applications in Education ISITAE 2007, 2007, pp. 174-178.
[19] Lu Xiaolin, Construct collaborative distance learning environment with vnc technology, International Conference on Semantics, Knowledge and Grid, Nov. 2005, pp. 127-129.
[20] Lu Xiaolin and Lu Xiaolin, Wsfrb protocol and virtual program computing, Proc. 8th International Conference on Computer Supported Cooperative Work in Design, vol. 1, May 2004, pp. 475-480.
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