The scheme has high quality of secrecy and low channel transmission amount.
该方案保密性强，信道传输量低。
2
On software it's composed of audio-video processing function, audio and video synchronizing function, audio and video data secrecy function, multicast transmission function.
系统软件包括音视频处理、音视频同步及数据加密和多播传输等功能。
3
The scheme has more secrecy of data transmission, robustness, requires less communication cost and performs efficiently etc.