數位內容伺服器之中介伺服器實作

Implementation of Middleware Server within Digital Content Server

葉崇智(Chung-Chih Yeh)

指導教授 ： 陳文進

國立臺灣大學/電機資訊學院/資訊網路與多媒體研究所/碩士(2006年)

https://doi.org/10.6342/NTU.2006.03111

摘要

隨著寬頻網路的普及，網路電視等多媒體服務已經變成一股新的多媒體傳播發展趨勢，雖然到目前為止尚未普遍被大眾所認同接受，或許是技術不夠成熟，或者是服務項目不夠完備，這是服務提供業者所必須努力的。
本論文提出一個數位內容伺服器的架構，數位內容伺服器是一個擁有多個多媒體伺服器的整合服務，包括了Multicast伺服器、HTTP伺服器、VOD伺服器、Download伺服器、DRM伺服器和中介伺服器，是由這許多伺服器所建立起來的一個完整而又健全的多媒體服務架構，而本篇的重點則是著重在中介伺服器的發展及實作上。
藉由中介伺服器，控制其他多媒體伺服器的工作將顯的更加簡單，伺服器管理者也不需要花費過多心力於不同的操控介面上，並且能簡化伺服器之間的合作，提供新型的服務；對於使用服務的客戶而言，中介伺服器電子節目選單的設計理念，也能加快客戶操作時，客戶端程式介面的反應速度，並且減輕伺服器的負擔，相對的也讓服務業者維護伺服器時所需花費的成本降低。
雖然由於中介伺服器擔任了伺服器間傳遞命令的角色，可能會使得客戶端程式無法迅速反應及時取得更新的電子節目選單，但是這個問題卻可以在實際應用時，視業者的需求及設計，搭配不同的解決方案而獲得解決。

關鍵字

中介軟體 ； 數位內容 ； 多媒體 ； 串流

並列摘要

With the popularity of broadband network, IPTV ( Internet Protocol Television ), one kind of multimedia services, has become a new trend of the development of multimedia-broadcasting; however, with the lack of mature technique and imperfection of services, it's not widely accepted, and these deficiencies need service providers' endeavor.
In this thesis, a novel architecture of DCS (Digital Content Server) is proposed. DCS, which is an integrated service composed of several multimedia servers including Multicast, HTTP, VOD, Download, DRM and Middleware Servers, is a complete and robust architecture of multimedia services. And I will focus on the development and implementation of middleware server.
With the assistance of middleware server, the job of controlling other multimedia servers seems simpler, and it release manager's burden in managing distinct interfaces, even more, middleware server has the ability to simplify the cooperation among servers and provides novel service prototype. For the customers who use the services, the designing conception of EPG ( Electronic Program Guide ) accelerates the response when clients operate at client interface and mitigate the load of server; in another aspect, lower the cost when service provider maintaining the server.
Even though that middleware server behaves as the communicator among servers will make it impossible that allowing client to update EPG immediately, this drawback will be solved by cooperation with several solutions which have their own advantages and disadvantages according to the practical needs of service providers.

並列關鍵字

middleware ； digital ； content ； multimedia ； streaming

參考文獻

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[9] B. Alfonsi, “I Want My IPTV: Internet Protocol Television Predicted a Winner”,

[10] Ulf Jennehag and Tingting Zhang, “Increasing bandwidth utilization in next generation IPTV networks”, IEEE International Conference on Image Processing, 24-27 October 2004, p 2075-2078.