摘要
机载数字视频记录设备(DVR)在短短的几年里就大量地替代了机载航空电子系统中的磁带式视音频记录设备(VTR),有力地推进了机载记录信息的灵活应用,而且给信息的存储、分发带来了前所未有的高效率。分辨率为1024×768像素分辨率的大屏幕显示终端的广泛应用,对数字视频记录提出了有别于普通电视信号采集记录的要求。1024×768像素分辨率视频信号高速采集和压缩技术是实现数字化视音频记录的核心技术。本文概述了对1024×768(XGA)信号进行采集的惯用方法以及存在的问题,提出了直接对XGA信号进行高速采集和压缩的设计方法。
The mass substitution of VTR by DVR in avionics systems in recent years greatly promotes the flexible application of the airborne recorded information, and makes the airborne information store and distribute effectively. Large size screen displays with resolution of 1024 × 768 pixels require that the digital video recording adapts different method than the conventional TV signal acquisition and record. The kernel technology for digitized video/audio signal recording with 1024× 768 pixels is the high speed signal acquisition and effective compression method, This paper outlines the usual method and its shortage, and puts forward a design technology of high speed acquisition and compression to direct XGA signal.
出处
《航空电子技术》
2007年第2期1-4,共4页
Avionics Technology
