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当社を含む16社でAS-MO（Advanced Storage - Magneto Optical）を開発した。AS-MOは光磁気方式を用いた書き換え可能な大容量光ディスクであり，光磁気方式で初めてMSR（Magnetic Super Resolution）媒体を実用化し，光パルス磁界変調記録，ランドグルーブ記録を用いて4.6Gbit/in2の高密度記録を達成すると共に，片側ウォブルアドレスと，クロックマークを用いた外部クロック方式によりデータ利用効率の高いフォーマットを開発することで，直径120mmの片面ディスクで６GBの大容量記録を実現した。さらに，AV用途とPC用途のどちらでも使用可能で双方間でのデータ互換性も保証される仕組みを新たに組み込んだ。
We have developed AS-MO (Advanced Storage-Magneto Optical) technologies with other 15 companies. An AS-MO disk is a large-capacity rewritable magneto-optical disk, in which MSR (Magnetic Super Resolution) media is put into practice for the first time. We have also used a laser-pulsed magnetic field modulation recording technology and a land/groove recording technology, so that a high density over 4.6Gbit/inch2 is achieved. Furthermore we have developed a highly efficient format using single side wobble addressing and external clocking by fine clock marks, so that the user capacity of over 6GB on a 120mm-diameter disk is achieved. In the AS-MO system, both AV application and PC application are available and data compatibility between them is ensured.
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