摘要
本文提出了一种利用FPGA来实现DVD光盘母盘误码率检测的仪器设计。该仪器首先将从光盘上读取的串行数据进行串并转换,然后进行EFM+解调。在此基础上,对所得到的数据进行RS误码校验和RS解码,对校验中发生错误的次数进行误码率统计,通过RS解码后的数据,实时获取与当前所显示误码率所对应的物理扇区编号,并通过LCD以曲线和数字方式显示结果。
This paper presents a design for bit error ratio tester of DVD mother disc using FPGA.. This device firstly reads serial signal from disc and changes this signal into parallel signal. Then it needs to realize the EFM＋ demodulation of disc-curving serial signal, which transform the disc-curving signal of 16 bits to the 8-bit bytes of each Recording Frame. On this base, it checkouts and decodes the data according to the decoding rule of RS code, computing bit error ratio according to the number of errors during data detecting. After RS decoding, it captures physical sector number corresponding to the current error ratio and shows the result in the manner of curve and number in LCD.
出处
《应用激光》
CSCD
北大核心
2007年第6期487-491,共5页
Applied Laser
