基于DSP+ARM的音视频同步压缩存储实时传输系统设计  

Design of Real-Time Transmission System for Audio Video Synchronized Compression Storage Based on DSP + ARM

作　　者：闫亚玲 李博[1] 孟祥飞 YAN Yaling;LI Bo;MENG Xiangfei(Key Laboratory of Instrumentation Science & Dynamic Measurement,Ministry of Education,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学仪器科学与动态测试教育部重点实验室,太原030051

出　　处：《实验室研究与探索》2019年第1期69-72,90,共5页Research and Exploration In Laboratory

基　　金：国家自然科学基金项目(61471325)

摘　　要：设计了基于DSP+ARM的音视频同步压缩存储实时传输系统。该系统融合DSP和ARM以及FPGA芯片对音视频进行处理,通过CCD和麦克风采集的音视频信息经FPGA处理后进入DSP完成基于H. 264/AVC的音视频同步压缩处理,完成后由ARM控制周边电路完成音视频的外接硬盘存储和RTP网络实时传输。结果表明,该系统的压缩比可达160,传输速度可达50帧/s,同步误差不超过600 ms。A system is designed for audio and video synchronous compression storage real-time transmission based on DSP+ARM.The system combines DSP,ARM and FPGA chips to process audio and video.The information of audio and video collected by the CCD and microphone is processed using the FPGA and then it enters the DSP to complete the synchronization compression processing of audio and video based on H.264/AVC.Next,the external hard disk storage and RTP network real-time transmission of audio and video are controlled by the ARM peripheral circuits.The results show that the system has a compression ratio of up to 160,a transmission speed of up to 50 frames per second,and a synchronization error of no more than 600 milliseconds.It can be concluded that the system has great practical value and can be fully promoted.

关 键 词：DSP+ARM 音视频同步压缩 实时传输系统 

分 类 号：TN919.5[电子电信—通信与信息系统]