一种多阶光盘帧同步信号的数字检测方法  

Novel frame SYNC signal detection method for multi-level optical discs

作　　者：严明铭[1] 裴京[1] 杨波[1] 潘龙法[1] 

机构地区：[1]清华大学光盘国家工程研究中心,北京100084

出　　处：《光电子．激光》2009年第5期645-647,共3页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(60677036)

摘　　要：提出了一种用于多阶光盘的帧同步信号检测方法,采用RF信号的求导结果来准确获取信息符的时间信息,并基于FPGA芯片实现了数字检测系统。该方法不依赖于阈值电平检测,避免了传统二值切割中阈值电平波动的问题。实验结果表明,该方法可以准确检测帧同步信号,帧同步信号误检率小于1×10-4次,满足多阶光盘系统的需求。In the paper, a novel frame SYNC signal detection method for the multi-level optical disc is addresseck The method adopts the differentiation of the RF signal to obtain the time information of record marks,and the digital detection system for the frame SYNC signal is implemented on the FPGA chip. The method is independent with the threshold level, so it avoids the mistake detection caused by the fluctuation of the threshold level. The experimental result shows that the method can accurately detect the frame SYNC signal with the fallout ratio less than 1 × 10^-4 and meets the needs of the multi-level optical disc.

关 键 词：多阶 光盘 帧同步 信号检测 时钟恢复 

分 类 号：TP333.4[自动化与计算机技术—计算机系统结构]