公开(公告)号：EP1402648A4

公开(公告)日：2008-08-13

申请号：EP02746166

申请日：2002-07-03

申请人： LG ELECTRONICS INC

发明人： SUH SANG WOON ,  KIM JIN YONG ,  LEE JAE JIN ,  LEE JOO HYUN

IPC分类号： H03M7/14 ,  G11B20/14 ,  H03M5/14 ,  H03M7/00 ,  H03M7/46

CPC分类号： H03M7/46 ,  G11B20/1426 ,  G11B2020/1457 ,  H03M5/145

摘要： The present invention relates to method and apparatus of converting a series of data words into modulated signals. This method generates for each data word a number of intermediate sequences by combining mutually different digital words with that data word, scrambles these intermediate sequences to form alternative sequences, translates each alternative sequence into a (d,k) constrained sequence, measures for each (d,k) constrained sequence not only an inclusion rate of undesired sub-sequence but also a running DSV (Digital Sum Value), and selects one (d,k) constrained sequence having small inclusion rate for recording on an optical or magneto-optical recording medium among the (d,k) constrained sequences having maximum value of running DSV smaller than a preset limit. According to the present invention, efficient DSV control can be achieved for even relatively-long sequences.