基于闪存卡的视频图像数据存储方法

摘要

A video image data storage mode based on the flash memory card was designed to solve the video image data storage problems of low data storage capacity and low data storage rate. Video data storage adopted SD card replacing the common external expansion XDRAM. Assembly language was used to optimize the multiple block operation function of SD card program. The results of experiment showed that the SD card storage speed was greatly improved and the video image data storage rate was up to 3. 94 MB/s. The system could satisfy the storage rate requirements for reconnaissance mission of low speed micro air vehicle.%针对视频图像数据存储采用外扩XDRAM存在着数据存储容量小,数据存储速率低的缺点,提出了基于闪存卡的视频图像数据存储方法.视频数据存储中采用SD卡取代了普通的外扩XDRAM,利用汇编语言对SD卡写多块操作函数进行了程序优化.实验表明:SD卡的视频图像数据存储速率有了很大提高,数据存储速率最高可达3.94MB/s,系统可以满足低速微型飞行器侦察任务对图像数据存储速率的要求.