相変化ディスクによる高密度グループ記録
1996 年 20 巻 45 号 p. 7-12
詳細
1996 年 20 巻 45 号 p. 7-12
Following unification of DVD-ROM format, standardization of DVD-RAM specification is now under way. Phase change disks will be employed for DVD-RAM since ROM drives will hardly be implemented with polarization optics. It is said that a couple of proposals in connection with recording method are being discussed in the standardization group. These are Land/Groove recording and groove recording. We have conducted write and read experiment employing the groove recording method for our phase change discs. We report in this article signal properties of our phase change discs based on the groove recording method.
