臺灣博碩士論文加值系統

網路媒體撥放系統中，存在許多問題，包括網路的環境、不同的撥放媒體、及使用者對播放品質的要求不同，這些條件都會對媒體的播放造成影響。所以如何讓系統順利播出，並合乎使用者的需求，就必須在既有的多媒體時序撥放規格(Multimedia Presentation specification)中，新增一些規格設定，讓撥放流程設計者得以利用這些時序規格設定，來描述QoS的需求，撥放系統再針對設定的QoS需求加以運算，播放出合乎使用者喜好的媒體過程。我們參考CCS與CSP的語法描述，定義一套描述規格，除了描述撥放流程，也增加了使用者或撥放流程對QoS(Quality-Of-Service)的要求。
目前在市場上的多媒體播放系統可分網路與單機上播放，但這些大多有些問題，單機的播放流程，使用者只能在單機上製作並撥放該媒體流程，網路的多媒體撥放，必須安裝或下載某些程式，才可以做媒體的撥放；而且編輯撥放流程與媒體的傳送，也都要在某些軟體上做製作，並上傳到伺服器上，才可以完成撥放製作。這對於一個網路撥放製作系統而言，較為不方便，所以我們提出了網路多媒體撥放系統架構。
本文提出一媒體撥放時序的規格，讓使用者方便設定對QoS與媒體撥放流程的要求，及在使用者端執行利用我們提出的演算法實作的JAVA applets，方便分析並實現整個多媒體撥放的流程。

There still exist lots of problems on network, for instance, the traffic jam of network. The demand for QoS is the key point, whereas different users may need different QoS constraints. To let the presentations can be smooth displayed and meet the users'' requirements, it is necessary to add some new settings into the existed temporal specifications of multimedia presentation. Such that authors can use these settings to specify their required QoS.
On market, there are two kinds of multimedia presentation systems, of which one is played on one single computer and the other is played on network. The later means that users must use some software to author media objects, design the schedules of presentations, upload them to servers, and then plug in or download some programs to play the presentations. Such a presentation system is inconvenient to author and play presentations. So we propose the architecture of network multimedia presentation systems.
In the thesis, we also propose a set of temporal specifications to let users specify the QoS and the schedules of presentations conveniently and execute the JAVA applets implemented with our display algorithm in the clients, then the expected QoS can be achieved.

封面
CHAPTER 1 INTRODUCTION
1.1 PRELIMINARY
1.2 MOTIVATION
1.3 ORGANIZATION OF THE THESIS
CHAPTER 2 BACKGROUND
2.1 INTERFACE OF MULTIMEDIA PRESENTATION SYSTEMS
2.2 BINARY TEMPORAL RELATIONS
2.3 QUALITY-OF-SERVICE(QOS)
CHAPTER 3 SPECIFICATION LANGUAGE AMSL (ALGEBRAIC MULTIMEDIA SPECIFICATION LANGUAGE)
3.1 ALGEBRAIC APPROACH
3.2 OPERANDS
3.3 TRADITIONAL OPERATORS
3.4 THE LANGUAGE
3.5 EXAMPLES 1: EXPRESSIONS OF A PRESENATION
3.6 EXAMPLES 2: PLAYBACKS OF THE VARIOUS TYPES OF MEDIA
CHAPTER 4 PLAYABILITY SEMANTICS FOR AMSL
4.1 USING OBJECT-PRECEDENCE RELATIONS
4.2 PRECEDENCE RELATION MATRIX(PR)
4.3 CONSTRUCTING PRECEDENCE RELATION MATRIX
4.4 ALGORITHM IN TABLE 4
CHAPTER 5 AMSL AND WEB(NETWORK/INTERNET)
5.1 BENEFITS AND LIMITATIONS ON WEB
5.2 CURRENT INVESTIGATIONS
5.3 MULTI-VERSIONS
CHAPTER 6 IMPLEMENTATION
6.1 TRANSMISSION OF HOMEPAGES ON WEB
6.2 SYSTEM ARCHITECTURE
6.3 SYSTEM CONFIGURATION
CHAPTER 7 CONCLUSIONS
REFERENCE
PUBLICATION LIST
JOURNAL PUBLICATIONS
CONFERENCE PUBLICATIONS

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