基于DM8168的小型机载视频记录仪设计

针对飞行器搭载相机视频存储和传输的需求,设计了一种基于异构多核处理器DM8168的小型机载视频记录仪。首先,基于DM8168和FPGA处理器设计小型化低功耗的硬件系统；接着,基于McFW软件架构设计视频采集编码的数据流,充分发挥DM8168多核体系结构的优势,实现两路1080P60视频的采集,并且对每路视频分别进行主次码流的H.264编码；最后,采用GPMC总线,将视频码流传输到FPGA处理器,以实现本地视频存储和远程视频传输。本记录仪体积小功耗低、记录时间长、视频传输时延小,能够很好地满足飞行器多路视频记录的需求。

Design of miniature airborne video recorder based on DM8168

A miniature airborne video recorder is designed based on heterogeneous multi-core processor DM8168 for the video storage and transmission of flying vehicle. First, DM8168 and FPGA processors are selected for the miniature and low-power hardware system. Second, the McFW structure which is based on the multi-core architecture of DM8168 is utilized to develop the capture and encoder of two channel 1080P60 video input, and each input is encoded into one H.264 main stream and anther H.264 secondary stream. Finally, the video stream is send to FPGA by using GPMC bus for the local storage and the wireless transmission. Our video recorder is miniature, low power, large storage and low video delay, and it is very suitable for the multi-channel video processing of flying vehicle.