| 题名 | 下一代红光高清光盘信号发生系统研究 |
| 作者 | 李曹建 |
| 学位类别 | 硕士 |
| 答辩日期 | 2009 |
| 授予单位 | 中国科学院上海光学精密机械研究所 |
| 导师 | 阮昊 |
| 关键词 | 高清 NVD 数据格式 RS编码 纠错 调制 |
| 其他题名 | Study on the signal generation system of the next generation red-ray high-definition disc |
| 中文摘要 | 目前，视频播放已经进入了高清时代(分辨率1920×1080)，一部高清影视节目的标准长度一般在为135分钟左右。存储该长度高清影视节目的光盘容量应该达到13.5-15G，而DVD光盘单面双层最大容量也只能达到8.5 G，不能满足存储和播放高清影视节目的要求。国外高清存储主要采用sony的蓝光光盘，然而由于价格居高不下，同时也会存在权利金的困扰，这些都表明了开发一种具有自主知识产权的红光高清光盘势在必行，NVD（下一代红光高清光盘）正是这样一种光盘。 为了增加光盘存储容量，NVD不仅改变了传统DVD的物理格式，也对其数据格式进行了创新，包括了数据帧、数据扇区、ECC块、ECC簇以及记录帧的设计。同时，在NVD中，也采用了新的调制编码。 根据武汉光电国家实验室的研究成果，在NVD中，将控制数据和音视频数据分开处理，针对各自的特点采用不同的RS编码方式，得到控制数据ECC块和音视频数据ECC块，随后这两种ECC块按特定的规则进行合并，形成记录帧。采用这种编码设计可以在保证纠错性能要求的前提下提高数据编码效率。同时，随着存储密度的提高，容易产生大尺度的突发错误，引入交错码来提高系统纠正突发错误的能力。 本文对这种新的光盘数据格式进行了软件仿真，设计了编码模块以及加错测试模块，理论分析还是仿真结果都论证了这种数据格式最大纠正突发错误长度为2850~2880ECC字节；而一个原始误码率为10-3数据块，经纠错后误码率可降低5个数量级。 考虑到原调制方案过于复杂且效率较低，本文设计了一种新的d，k冲突解决以及DSV控制方案。 通过该软件仿真系统的建立，为之后NVD数据格式的研究工作奠定了一定的基础。 |
| 英文摘要 | At present, the HDTV (1920×1080) has been popular in the market. But the capacity of DVD has been unable to meet the requirement of storging one standard high-density programe (135min). Currently, on account of the high prices and the disputes of paten, the Blu-ray Disc can not take on the large burden immediately in China. It also prove that researching independent intellectual proprietary red-ray high-density optical discs, and NVD (Next Generation Versatile Disc) is just the one. To increasing the capacity, not only the physical format but also the data format is improved in NVD, including the design of data frames, user sector, ECC block, ECC cluster and recording frames. Meanwhile, a new modulation coding method is designed for NVD too. According to the results that researched by the WNLO (Wuhan National Laboratory for Optoelectronics) .In NVD, the data will be divided into two parts, one is the control data, and the other is user data. Then, the two types of data will separately enter into two RS encoders, through which we can achieve the practical error correction performance and enhance the coding efficiency simultaneously. With the rapid incremental data density, high-density disc must firstly resolve large-scale burst errors problem, and a new interleaving arithmetic is designed to solve it. In this article, a software system is designed to simulate the process refered in the former segment, including the encoding module, and a test module. The simulation shows the new data format has a good error corrected capability: its highest burst error corrected capability is up to 2850~2880 ECC bytes, and after correcting data which added random error, and its original error rate is10-3, the error rate could be reduce to 10-8. Considering the existing modulation coding method is lack of efficiency and very complex, a simple scheme is designed in order to replace it. For the advanced research, this work is the foundation and quite important. |
| 语种 | 中文 |
| 内容类型 | 学位论文 |
| 源URL | [http://ir.siom.ac.cn/handle/181231/16560]  |
| 专题 | 上海光学精密机械研究所_学位论文 |
| 推荐引用方式 GB/T 7714 | 李曹建. 下一代红光高清光盘信号发生系统研究[D]. 中国科学院上海光学精密机械研究所. 2009. |
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