This method has been adopted in a video conference product.

该方法已在视频会议产品中得到应用。

With the development of network and multimedia technology, video conference system has changed from the H.320 system based on ISDN to the H.323 system based on IP.

随着多媒体技术、网络技术的发展，电视会议已经由传统的基于ISDN的H．320系统发展为基于IP网络的H．323系统。

In some applications such as video conference and distance learning, the importance of screen data has exceeded video data.

特别是在视频会议和远程教育这样的应用中，屏幕数据作为一个必不可少的“源”，其重要性已经超过了视频数据。

The algorithm discussed in the paper has realized echo cancellation with software in real time within our video conference system.

文中所阐述的算法已在电视会议系统中实时实现了软件的消回声处理。

At the same time,most of the public share collaboration systems aboard had been developed for many years,they have few multimedia functions especially in providing video conference aspect.

同时，国外资料公开的同类软件系统大部分开发时间较早，实现的多媒体协作功能有限，尤其是在视频交互方面做得不够，跨平台的系统较少。