新型机载多路音视频记录系统的设计与实现  

Design and Implementation of a New Type of Airborne Multi-channel Audio/Video Recording System

作　　者：张盛林[1] 易本顺[1] 陈欣[1] 方华猛[1] 黄太奇[1] 

机构地区：[1]武汉大学电子信息学院,武汉430072

出　　处：《电光与控制》2015年第8期80-86,共7页Electronics Optics & Control

摘　　要：针对机载多路音视频记录系统的高分辨率、大数据量和高实时性要求,提出一种基于嵌入式平台的实时多路音视频采集、编码和存储系统。该系统采用达芬奇硬件平台实现音视频采集控制及编码,同时采用FPGA完成数据缓存和传输控制,从而实现四路XGA(1024×768@60帧/s)视频、一路PAL(720×576@25帧/s)视频和两路音频的高效实时存储。测试结果表明,该系统稳定可靠,可实现多路音视频的采集、存储功能,图像清晰度高,实时性好,在机载音视频记录领域里可以得到广泛的应用。Aiming at the requirements of high resolution, mass of data and high real-time performance for airborne multi-channel audio / video recording systems, a real-time multi-channel audio / video recording system was proposed based on embedded platform. Davinci video processors from Texas Instruments Incorporated（ TI） were adopted to control the efficient real-time digitizing,coding and storage for fourchannel XGA（ 1024 × 768@ 60 frames / s） videos, one channel PAL（ 720 × 576@ 25 frames / s） video, and two-channel audios. Cyclone devices were exploited to transmit the compressed multimedia data. The testing results show that the system can implement recording and storage of multi-channel audio and video signal with high image resolution and good real-time performance. The system can find wide applications in the field of airborne recorders.

关 键 词：机载音视频记录系统 多路音视频 达芬奇技术 FPGA 数据存储 

分 类 号：V271[航空宇航科学与技术—飞行器设计] TP391[自动化与计算机技术—计算机应用技术]