多媒體教學播放工具的註解系統之 設計與實作

Abstract

在本論文中，我們提出多媒體教學播放工具的多媒體註解系統的設計技術與實作雛型。隨著電腦的普及和多媒體技術的發達，因此目前已有多種多媒體教學錄製系統可用來協助教師利用多媒體進行教學。多媒體教學錄製系統可以即時錄製教師的授課教學內容及講解動作，提供學生重覆學習的機會。多媒體教學錄製系統由兩個部份組成：1. 用來製作多媒體教材的「多媒體教學錄製工具」以及用來播放多媒體教材的「多媒體教學播放工具」。但是，目前的多媒體教學錄製系統加製補充教材須花費時間，而播放工具對學習註記功能的支援不足，因此本研究的目的是要在多媒體教學播放工具上實作多媒體註解系統，讓多媒體教學錄製系統的使用者可以利用註解系統加入多媒體的註解，並幫助使用者利用多媒體播放工具來複習教材以及加入註解內容。 這個多媒體教學播放工具上的多媒體註解系統，提供多媒體的註解，讓使用者除了可以加入文字註解，還可以加入影片註解與互動教材的註解，同時提供註解群組的功能讓使用者可以分類註解；註解索引的功能讓使用者可以利用索引連結到註解所在的位置或是外部的檔案。使用者使用多媒體註解系統時，不但可以由註解讀取教材的重點，還可以利用閱讀記錄回到原來教材播放的位置，對於教材的製作者更可以利用多媒體註解加入補充內容，並減少重製教材的需求。 本論文應用了在軟體工程界使用多年的設計樣式設計、實作註解系統，，並利用這些樣式的應用，對於多媒體教學播放工具，降低本系統和多媒體教學播放工具之間的藕合，讓本系統更容易和不同的多媒體教學播放工具進行整合。降低本系統功能函數和使用者介面之間的藕合，讓本系統更容易在使用者介面因為程式發展而變動時，維持功能函數的正常。 本註解系統已設計和實作完成，可以展示出突破現有多媒體教學錄製系統的限制。

In this thesis, we present the design and implementation of a multimedia annotation system for multimedia lecturing player. With the popularity of computers and the advance of multimedia technologies, several institutes have presented multimedia learning systems to help instructors to achieve better teaching quality. A multimedia learning system consists of two parts, a multimedia lecturing recorder and a multimedia lecturing player. A multimedia lecturing recorder can be used to create multimedia lecturing materials. On the other hand, a multimedia lecturing player can playback the recorded lecturing materials. However, current multimedia lecturing recorder is not efficient in reproducing or changing the lecturing contents, and the players do not have enough support for readers to write or manage notes. Therefore, this study aims to design and implement a multimedia annotation system for the multimedia lecturing player, such that users can add multimedia annotation and review lecturing materials more easily. The presented multimedia annotation system can be used to make multimedia annotations, so that users can add not only text annotations but also video and interactive annotations. Additionally, the system provides annotation group function that allows users to categorize annotations, and annotation index function that allows users to link annotations to the annotated lecturing materials or external files. For normal readers, the multimedia annotation system can not only be used to highlight or make notes on the learning materials, but also to cross-refer annotations and the original lecturing materials very effectively. As for producers of learning material, this system can be used to add supplemental multimedia contents to reduce the demand of reproduction. In this study we also apply design pattern technique in the design and implementation of the annotation system. Therefore, we can decouple the annotation system from the multimedia lecturing player and from the user interface, such that we can integrate the annotation system with various multimedia lecturing players or change user interface easily.