电视会议

When the projection is placed behind a screen (as it is in television and various video conferencing applications where the image is displayed on a monitor or a fabric screen) it is described as a back projection system.

当投影仪放置在屏幕的后方时（就像电视中以及各种电视会议中使用的那样，图像被投影到监控器或编织物屏幕上），称为背面放映系统。

Today, there have been many OA systems, for example, desktop publishing, video conference , videotext and so on. So, many office workers can easily find the information they want through a personal computer sitting on his or her desk.

今天已经有许多办公自动化系统，如：桌面印刷系统、电视会议、电视传视等，所以，许多办公室工作人员可以通过他们桌子上的个人计算机轻松地找到他们所需要的信息。

But desktop video conferencing entered the market with an explosion of publicity several years ago and have been ''.

但几年前，桌上型电视会议进入市场并大张旗鼓地宣传，自此一直就稳定增长。

But it seems that the MPEG-4 is not so popular at home, and it is mainly applied in digital monitor and control system.

因此，研究MPEG-4视频编码标准并实现实时编解码具有重要意义，特别是在图像质量和实时性方面要求都很高的场合，例如电视会议、视频电话和IPTV等。

Globolization: With the extensive performance of information technologies , especially tele-conference, operation live demonstration, and high definition audio-video system, the surgical cooperation can adjust to the trend of the current century and answer to expectations of patients and health care benefactor

全球化：随着信息技术的广泛运用，特别是远程电视会议、手术现场展示以及高清晰度音频视频系统，外科手术可以跟上新世纪的潮流，不负患者和医疗捐助者的期望，在全球范围内使医疗水平不断提高。

If you have, then you've seen that videoconferencing via the Internet is not a perfect form of communication.

如果你有，那么你已经看到了通过因特网电视会议不是一个完美的沟通形式。

The current second-generation and third-generation (3G) mobile communication systems operate with narrow audio bandwidth limited to 200-3400Hz.As wireless systems are evolving from voice-telephony dominated services to multimedia and high-speed data services, the introduction of a wider bandwidth of 50–7000 Hz speech codec which provides substantially improved speech quality and naturalness is quite necessary. The Adaptive Multi-rate Wideband speech codec which was selected by 3GPP/ETSI and ITU-T can provide natural, present and comfortable codec speech and have higher intelligence and robustness in wireless systems. A wide range of applications are envisioned for AMR-WB, including ISDN wideband telephony and audio/video teleconferencing,Voice over IP and Internet applications such as IP video conferencing, voice mail, voice chat, broadcast, and voice streaming.

随着现代无线通信特别是多媒体通信的发展，人们对语音通信的质量要求越来越高。3GPP/ETSI TS026和ITU-T 722.2标准确定的自适应宽带语音编解码器AMR-WB具有的低比特率、互操作性和高语音质量，使之不仅能够应用于无线通信领域，而且可广泛应用于其他各种通信系统和平台，包括：VoIP、因特网、PSTN高质量音频会议、音频流、ISDN宽带电话、ISDN可视电话和电视会议等。

Notes the current use of videoconferencing as a means of communication within the United Nations, and requests the Secretary-General to study comprehensively this issue and to report thereon to the General Assembly at its fifty-seventh session

注意到联合国内部当前利用电视会议作为交流工具的情况，请秘书长全面研究这一问题并就此向大会第五十七届会议提出报告

Desktop'.'' publishing, video conference, videotext and so on.

桌面'。''印刷系统、电视会议、电视传视等。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。