【摘要】 自动化控制设备的发展促进了嵌入式远程视频传输设备的广泛使用。MPEG2技术虽然是目前广泛使用的一种音视频压缩技术,但由于目前各种通信资源传输带宽的限制,使得MPEG2音视频流在远程传输上还存在诸多困难,这也就限制了嵌入式远程视频传输设备的应用。另外,E1线路是一种比较方便和可靠的远程传输线路。在单路E1线路上,采用结合MEPG2码流特性的传输控制算法、高压缩比的MPEG2压缩芯片和DSP芯片将有效地解决以上问题,实现满足应用要求的嵌入式远程视频传输设备。更多还原

【Abstract】 The development of automatic control device accelerates the wide usage of the embedded devices transmitting the remote video. At present, MPEG2 is a widely used technique of the audio and video compression. However, because of the limit of the bandwidth provided by all kinds of the present communication resources, there are some difficulties in the remote transmission of the MPEG2 audio and video stream, which confines the application of these embedded devices transmitting the remote video. On the other hand, E1 is lines of the remote transmission with convenience and reliability. On a single line of E1, if the transmission and control algorithm combined with the character of MPEG2 code stream, the MPEG2 compression chip with high compression ratio and a DSP chip are adopted, the above questions and difficulties will be solved efficiently and the embedded remote video transmission’s device which meets the requirements of the application will be implemented.更多还原