光盘多阶调制编码优化方法研究
Multi-order modulation coding optimization method for optical discs
方争 1张猛 2赵雅慧 1桂天炜 1李威 2谢长生 1吴非3
作者信息
- 1. 华中科技大学武汉光电国家研究中心,湖北武汉 430074
- 2. 华中科技大学计算机科学与技术学院,湖北武汉 430074
- 3. 华中科技大学武汉光电国家研究中心,湖北武汉 430074;华中科技大学计算机科学与技术学院,湖北武汉 430074
- 折叠
摘要
传统的光存储系统中采用游程长度受限(Run Length Limited,RLL)调制技术,受限于光学衍射极限,容量提升难度大.多阶光存储技术采用新型多阶记录介质或多阶调制技术,在不改变光学参数的情况下可以显著的提高光存储的密度和容量.多阶RLL调制编码则是多阶光存储技术中的关键技术,为提高光存储的密度和容量,针对光盘存储研究多阶调制编码优化方法,提出4阶RLL(1,7)调制编码方法,相较于蓝光光盘现采用的17PP编码方法,最大记录密度可达2.4bit,光盘容量提升50％,并具有一定的纠错能力.
Abstract
The conventional optical storage system uses Run Length Limited(RLL)modulation technology,which is limited by the optical diffraction limit and has great difficulty in capacity enhancement.Multi-order optical storage tech-nology uses a new multi-order recording medium or multi-order modulation technology,which can significantly increase the density and capacity of optical storage without changing the optical parameters.In order to improve the density and capacity of high-order optical storage,the multi-order modulation coding optimization method is studied for optical disc storage,and the 4th-order RLL(1,7)modulation coding method is proposed,which can improve the maximum recording density up to 2.4bits,increase the capacity of optical disc by 50％,and have certain error correction capability compared with the 17PP coding method currently used in Blu-ray disc.The maximum recording density can be 2.4bits,the disc ca-pacity can be increased by 50％,and the error correction capability can be improved.
关键词
信息光学/多阶光存储/多阶游程长度受限码/调制编码Key words
information optics/multi-order optical storage/multi-order travel length restricted code/modulation code引用本文复制引用
基金项目
国家重点研发计划(SQ2022YFB2800072)
出版年
2024
NETL
NSTL
万方数据