GDIPlus双缓存技术在USB采集卡控制软件中的应用  

Application of GDIPlus double buffering technology in USB data acquisition card controlling software

作　　者：杨增宝[1,2] 杨浩[1] 

机构地区：[1]重庆大学,重庆400044 [2]长江师范学院,重庆408100

出　　处：《电子设计工程》2011年第12期18-20,共3页Electronic Design Engineering

摘　　要：为了对更高频率的电信号进行采样显示并进行后续数值分析,简要介绍了一种能满足此要求的USB2.0数据采集卡硬件结构设计,然后重点研究在针对该卡的控制软件设计中所遇到的清屏闪烁问题和高速数据流的动态波形显示问题。提出了针对上述问题所采取的切实可行的解决办法,那就是GDIPlus双缓存显示技术。经实验证实,采用该方法可有效加快图形显示速度,并能从根本上解决屏幕擦除时的闪烁现象,达到了较好的实验效果。In order to samples higher frequency signal and makes subsequent numerical analysis.In this paper,it firstly introduces one of the hardware structure design of data acquisition card based on USB2.0 to meet the requirements,then mainly discusses how to resolve the problems during the software design.One is screen flashing when clear the drawing area.The other is how to display the dynamic waveform corresponding to the high-speed data stream.It＇s indicated that the GDIPlus double buffering technology is feasible.It＇s proved by experiment that the display effect can be improved and flashing phenomena can be eliminated by using the GDIPlus double buffering technology.This method can achieve the better experimental result.

关 键 词：GDIPlus 缓存 波形 虚拟 映像 

分 类 号：TP391.8[自动化与计算机技术—计算机应用技术]