針對載入時間最佳化的互動電視輪播串流產生器

Optimal Carousel Stream Generator for Interactive Digital TV

蕭立賢(Li-Hsien Hsiao)

指導教授 ： 郭天穎

國立臺北科技大學/電資學院/電機工程系研究所/碩士(2007年)

https://doi.org/10.6841/NTUT.2007.00140

摘要

隨著數位電視服務的興起，除了發展傳送數位化的影音內容之外，還可透過電視廣播系統傳送應用程式提供互動加值服務。歐洲DVB組織的互動平台DVB-MHP技術發展已相當成熟，主要是利用MPEG-2傳輸串流中的DSM-CC輪播技術重複播放互動資訊，但受制於頻寬以及輪播技術的特性，影響啟動速度並且使用的過程中也會造成延遲，而啟動時間和延遲時間當中，大部分的時間是花於等待輪播至所需的檔案，可能因此降低用戶使用的意願。本論文將結合文獻所證實的有利改善技巧，並透過馬可夫鏈模型描述多場景架構的程式，估計出於各場景實際傳輸該有的重複配置量，在保證能有低啟動時間和低延遲時間下，產生出最佳的輪播串流。同時亦將所提出的改進技巧實作於DVB-MHP互動應用程式製作工具和串流產生器之中，並將輪播串流送至MHP機上盒進行驗證功能。

關鍵字

互動數位電視 ； DVB-MHP ； DSM-CC輪播 ； 傳輸串流 ； 串流產生器

並列摘要

With the rapid growth of digital television technology, TV operators can now deliver applications for interactive services via television broadcasting system. DVB-MHP standard defines the delivery of interactive applications using DSM-CC Carousel for the purpose of periodical transmission. Since the transport stream carries multiple services, the bandwidth allocated for the applications becomes limited. As a result, the application delivery time and start-up time in the receivers could be painfully slow. This thesis uses Markov chain model with the proposed multi-shot framework for MHP applications. Some modified literature approaches are combined to generate the optimal carousel stream, which repeats the shots in a way ensuring low starting time and low average delay time..The proposed optimal carousel stream generator is implemented on our DVB-MHP authoring tool. The experiment demonstrates that the carousel streams delivered to the MHP set-top box can work considerably effectively.

並列關鍵字

Interactive Digital TV ； DVB-MHP ； Object Carousel ； Transport Stream

參考文獻

[6] 晉伯芸,“製作具低延遲互動電視應用程式的DVB-MHP工具之開發,“ 碩士論文, 國立台北科技大學, 台北, 2006

[7] Tien-Ying Kuo, Li-Hsien Hsiao and Po-Yun Chin, "Multi-Shot Framework with Preloading Architecture for Low-Latency MHP Application Delivery", The 2007 IEEE International Conference on Multimedia and Expo (ICME07), Beijing, China, June 2007

[18] ETSI TS 101 812 v.1.3.1, Technical Specification, “DVB: Multimedia Home Platform (MHP) Specification 1.0.3”, June, 2003.

[19] ETSI TS 102 812 v1.2.1, Technical Specification, “DVB: Multimedia Home Platform (MHP) Specification 1.1.1,” June 2003.

[20] DVB Blue Book A107, “DVB: Multimedia Home Platform Specification 1.2,” May 2007.