video data terminal 中文意思是什麼
video data terminal
解釋
可視數據終端-
Video data terminal
顯示數據終端 -
Although stb just is a sort of terminal equipments of the tv signal transmission system, however pivotal technique involves the data demodulation, channel decode, transport stream de - multiplexing, audio and video signal decompression technique and real - time software technique with upriver data coding technique etc. therefore, software and hardware technology research and development of stb, which can increase usefulness with dependable of digital video signal and audio signal for study later make the theories preparation and backlog experience
機頂盒雖然只是數字電視傳輸系統的終端設備，但所用到的關鍵技術涉及到數據解調、通道解碼、傳輸流的解復用、音視頻信號解壓縮技術以及實時軟體技術和上行數據的編碼技術等。因此，通過對機頂盒軟、硬體的研究開發，既能為以後研究如何提高信息傳輸的有效性和可靠性作理論上的準備，也為圖像信號和音頻信號的數字化處理積累經驗。 -
Secondly, it makes a study of the operating platform and terminal of video - conference system. thirdly, it goes into multimedia image format, c / s and b / s mode, the interface technology of database and how to transmit, saving and browsing images on network. at last, it also has a study of tcp / ip ( transmission control protocol / internet protocol ) protocol, h. 323 protocol, com + ( component object module ), ado ( activex data objects ), msmq ( microsoft message queue )
本論文結合「 xmediabase視頻會議系統」的實際項目，論述了視頻會議系統的背景和應用前景，提出一套視頻會議系統的設計方案，研究和開發了一個支持視頻會議系統的運營平臺和終端；深入研究了多媒體圖像格式，圖像在網路上的傳輸、存儲與瀏覽， b / s模式以及在b / s模式中數據庫的介面技術；同時對tcp （ transmissioncontrolprotocol ） / ip （ internetprotocol ）協議、 h . 323協議、 com + （ componentobjectmodule ）組件技術、 ado （ activexdataobjects ）技術、消息隊列服務等做了研究與開發工作。 -
A large number of data and video information which produced by data terminal and pronunciation information need to transmit in modern communication system
現代通信系統中，不僅僅需要傳輸語音信息，還需傳輸各種數據終端產生的大量數據信息以及視頻信息。 -
In lan, multimedia communication can be realized with largle development of ethernet and video data compression in recent years. multimedia have being designed widely, which is a hotspot in the field. to ensure the stability and expansibility of terminal, we adopt method of design based on module. hardware of terminal should be largely integrated ; software of terminal should be designed on module based on os, also
目前基於以太網的h . 323多媒體通信系統已成為了研究和開發的熱點。多媒體視頻終端是h . 323多媒體通信終端的組件之一。為保證系統的穩定性和可擴展性並加快開發速度，採用模塊化設計的方法。 -
Cdma2000 1x packet data service is completely based on ip technique. when subscribers use packet data service, packet network offers a channel to connect ip network to mobile terminal. on this way, cdma2000 1x packet network can offer internet accessing 、 vpn ( virtual private network ) special network accessing service and so on. as 3g ( the third ganeration ) telecommunication technique come, packet network offers many expecting service, such as image flowing medium 、 video meeting 、 interactive game service, etc. this engineering design helps to construct cdma2000 1x packet network of sichuan unicom
Cdma20001x分組數據業務完全基於ip技術。當用戶使用分組數據業務的時候，分組域將為移動終端提供一個接入ip網路的通道，在此基礎上， cdma20001x分組核心網可以向移動用戶提供網際網路、虛擬專網接入等多種分組數據業務。隨著3g通信技術的發展，提供給移動終端用戶的傳輸速率和可用帶寬將大大的增加。 -
The hardware achitecture of home integrated services terminal is mainly composed of the following five parts : dvb - based front - end interactive module, video and audio data processing module, output presentation module, peripheral equipment data interface module, memory management module
其硬體結構大體可分為dvb前端交互模塊、音視頻數據處理模塊、輸出呈現模塊、外圍設備數據介面模塊和存儲器管理模塊這五個主要單元。 -
This paper also provides some background knowledge about sip and video conference, such as the sip framework, the history of voip and video conference, etc. this paper emphasizes on the implementation of sip terminal on the windows platform, including the realization of sip stack, the capture and compression of video and audio steams, rtp transmission of stream data, the working thread of sip terminal and the optimization of video codecs
本文在論述研究工作的同時也介紹了一些相關的背景知識如sip協議的框架、 voip和可視電話的發展歷史等。本文重點論述了windows平臺sip多媒體終端的實現，包括sip協議棧的實現、視音頻流的採集、編解碼和網路傳輸方案、 sip終端的工作流程、以及編解碼器基於指令集的優化。
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