Multi-level RLL is a new alternative scheme for optical recording,which uses multi-level RLL code to record information in both the length and the signal amplitude of the recorded marks.

• 新型多阶RLL光存储采用多阶RLL编码方案,将信息同时记录在信息符的长度和信号幅值中,从而大幅度地提高了光盘的容量。