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  • 學位論文

DVB-H接收系統之網路與傳輸層的模組之實現

The Implementation of Network and Transport Layer Modules for a DVB-H Reception System

指導教授 : 吳和庭

摘要


近年來由於以IP為基礎的無線通訊技術的快速演進,消費者能夠以高速的頻寬享受高畫質影音和行動上網的服務,進而提升到隨時隨地都可以看電視的需求。故歐洲數位視訊廣播技術發展組織(Digital Video Broadcast Project,DVB Project)提出DVB-Handheld (DVB-H)技術。本論文主要是探討手持式數位傳播的網路與傳輸層軟體架構設計。透過(1)實現解譯FLUTE/ALC/LCT封包; (2)實現前向糾錯演算法:Compact No-Code scheme,並且將編碼符號解碼成原始資料; (3)解譯ESG資訊並傳輸至應用層模組做進一步的詮釋; (4)解譯會談描述協定; (5)解譯LCT延伸標頭,包含認證資訊、檔案描述表格、FEC物件傳輸資訊等; (6) 解譯RTP/RTCP封包並將其傳至影像與語音模組,來完成DVB-H接收系統中網路與傳輸層軟體的建置。其中,透過RTP/RTCP 封包解析的完成,將能正確且有效率的將即時視訊與音訊串流內容,分別送至所相對應的應用層解碼模組中。而透過FLUTE/ALC/LCT 相關協定之解譯,原接收資訊中關於檔案屬性與ESG 資訊,亦能送至相對應之應用層模組中,進行下一步的解碼或解譯。本研究成果可與其餘DVB-H接收系統之相關模組整合,實現完整的DVB-H接收系統。

並列摘要


IP-based wireless technology has been developed very rapidly in recent years. With high-speed bandwidth, high-definition video and mobile internet services, this technology can even fulfill consumer’s high-quality television service requirement at anytime and any place. Therefore, the European Digital Video Broadcasting Technology Development Organization (Digital Video Broadcast Project, DVB Project) proposed the DVB-Handheld (DVB-H) technologies. In this thesis, we aim to implement the software modules of network and transport layers specified by the IP Datacast Protocols. The carried out tasks include:(1) Decapsulation of FULTE/ACT/LCT packets; (2) Realization of the Forward Error Control (FEC) mechanism with Compact No-Code scheme; (3) Parsing the Electronic Service Guide (ESG) data for further processing in the corresponding application layers; (4) Parsing the Session Description Protocol (SDP) data; (5) Decoding the LCT extension field, which includes the authentication data, FDT instance header (EXT_FDT) and FEC object transmission information (EXT_FTI); (6) Decapsulation of RTP/RTCP packets for further decoding in the corresponding video and audio modules to complete the network and transport layer software modules for a DVB-H reception system. After the decapsulation of RTP / RTCP packets, streaming live video and audio contents are sent to the corresponding application layer decoding modules correctly and efficiently. Furthermore, through the decapsulation of FLUTE / ALC / LCT packets, the file based data and ESG information are sent to corresponding application layer modules for further decoding or interpretation. The results of this research work can be integrated with other DVB-H modules to realize a complete DVB-H reception system.

參考文獻


[25] 李嵩興,「DVB-H IP解封裝器設計與實現」,國立台北科技大學電腦與通訊研究所碩士論文,2006年。
[22] 童子倫,「手持式數位電視之多媒體播放系統」,國立臺北科技大學資訊工程研究所碩士論文,2009年。
[21] 涂義昇,「適用於視訊會議之即時傳輸控制協定硬體的設計與實現」,成功大學電機工程學系碩士論文,2003年。
[26] 張力懿,「手機電視軟體接收器」,國立台北科技大學電腦與通訊研究所碩士論文,2007年。
[3] J. Postel, “Internet Protocol,” RFC 791, Sep. 1981.

被引用紀錄


周楷傑(2012)。DVB-H接收系統中增強式IPDC功能之設計〔碩士論文,國立臺北科技大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0006-1708201221295900

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