摘要
在基于DSP的USB主机数据采集系统中,针对DSP内部ROM和RAM存储空间通常不是很大的问题,本文应用LZW数据压缩技术对采集数据进行压缩处理,再通过USB总线将压缩数据传送到外部存储器(U盘、移动硬盘等),实验证明该方法较大幅度地提高了外部存储器的空间利用率和USB总线数据传输的效率。
In data acquisition system of USB host based on DSP, aiming at theproblem of less spaces of ROM and RAM in DSP,this paper brings up a method of applying LZW data compression coding to compress data, and then transmitted the compresseddata to the exterior memory through USB bus. It was proved that this method can greatly improve the exterior memory use andthe efficiency of the USB bus.
出处
《微型电脑应用》
2007年第5期62-64,69,共3页
Microcomputer Applications
关键词
数据采集
数据压缩
LZW压缩算法
字典
Data acquisition Data compression LZW compression algorithm Dictionary
