具錯誤更正能力之多媒體傳輸COM原件

Abstract

在多媒體傳輸的架構中，模組化相當的重要。Direct-Show對於單機上播放多媒體的模組有完善的架構，然而卻缺乏一個完整的多媒體傳輸元件。此外，在此元件的傳輸部分，自動重傳要求並不符合多媒體即時傳輸的要求，前向錯誤更正則彌補這項缺陷而且更適用於一對多的傳輸。 本論文將以Direct-Show的架構為基礎，發展一套建構在UDP協定層上的前向錯誤更正多媒體傳輸元件，讓多媒體系統可以容易地跟本系統結合，由單機的應用轉成網路多機互動應用。

Modelarity is very important in multimedia transmission architecture. Direct-Show defines a mature architecture for playing multimedia on a single machine. However, it lacks a default multimedia transmission component. Besides, in the transmission part of this component, the automatic retransmission request is not suitable for real-time multimedia transmission. Forward error correction is a solution for multimedia communication, and suitable for multicast transmission. In this paper, we will develop a forward error correction component using UDP protocol based on Direct-Show's architecture such that application programs can be integrated with our system without knowing the details of our system.