記録補償用マルチパルスを用いない相変化光ディスクへの高速記録

概要

論文の詳細を見る
In broadcasting stations, the data transfer rate of phase change optical disk systems for HDTV must be more than 100Mb/s. A conventional phase change disk system must drive a laser diode with multipulse in order to record data. However, using this method seems to make laser diode driving difficult if the data transfer rate is more than 100Mb/s to achieve. High data transfer rates requires high linear velocity. We theorized that the same cooling effect as occurs in multipulse appears at high linear velocity. A bit error rate of less than 10^<-5> was obtained in 100Mb/s read/write experiments in which random data was recorded without multipulse onto a phase change disk by using RLL (1, 7) code and Partial Response Maximum Likelihood (PRML) at a scanning velocity of 25m/s. This result proved that our theory was correct.
社団法人映像情報メディア学会の論文
2002-10-01