摘要
E-F相位差信号是DVD光盘伺服系统用于循迹的重要信号。研究并设计了一种基于现场可编程门阵列器件(FPGA)的E-F相位差信号检测系统;介绍了系统设计原理,包括:光学头模型、循迹误差信号和E-F相位差的检测原理,并阐述了预处理环节、低通滤波环节、二值化处理环节和相位比较器。该检测系统通过QUARTUS软件进行逻辑仿真和功能验证,并基于数字伺服控制实验平台进行了实验,验证了E-F相位差信号检测的准确性。
E- F phase difference is one of the important parameters of DVD optical pick- up heads. Analyses and addresses a test method of E-F phase difference of DVD optical pick- up heads based on FPGA. Introduces the design methods of the system including： the model of the optical head,tracking difference and the principle of tracking error photo detectors. Expatiates the pretreatment aspect, the low- pass filter aspect, the binarization treatment aspect and the phase comparator and simulated the module with QUARTUS. Experiment displayed the accuracy of this presented method and system.
出处
《计算机技术与发展》
2009年第8期182-185,共4页
Computer Technology and Development
基金
广东省粤港关键领域招标项目(2005A10208004)
