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能够擦除并重写与小型光盘相同信号的光盘已由日本索尼公司研制成功。其旋转数等也与目前的小型光盘相同,而使用磁场调制方式的磁光记录。磁场调制方式也可称为光辅助的磁记录。记录时激光以固定的强度对外部辅助磁场加记录信号。可以重写。使用直径120mm的带沟槽(节距1.6μm、宽0.6μm)聚碳
Discs that can erase and rewrite the same signals as compact discs have been successfully developed by Sony Corporation of Japan. The number of revolutions and the like are also the same as those of current compact discs, and magneto-optical recording using magnetic field modulation is used. Magnetic field modulation can also be referred to as light-assisted magnetic recording. Laser recording with a fixed intensity on the external magnetic field plus record the signal. Can be rewritten. Trench (pitch 1.6 μm, width 0.6 μm) polycrystalline with a diameter of 120 mm was used