Holographic data storage systems have the potential to provide high storage densities and high data rates , thus making them attractive candidates for storage applications . there are a variety of holographic storage technologies published in magazines recently 全息光存储技术由于具有大容量,读取数据速率快的特点而越来越吸引人们的注意,近十几年来有关各种各样全息存储方法的文章常有报道。
Reed - solomon codes have advantage of correcting bursting error and random error together , especially to the former . because its correcting capability amounts to the utmost correcting capability of block correcting codes , rs codes are widely used in telecom technology and data storage system Reed - solomon ( rs )码具有同时纠正突发错误和随机错误的能力,且纠正突发错误更为有效,其纠错能力达到了分组纠错码的极限,因而被广泛地应用于数据通信和数据存储系统的差错控制中。
Now , the storage area network ( san ) is one of the mainstream storage technologies . the san has many outstanding characteristics : high speed , high availability , high expansibility , cross - platform sharing , remote virtual storage and low tco , etc . it provides a genuine solution for the concentrative storing and management of the vast data . the data storage system of most large enterprises uses the san 目前, san ( storageareanetwork )是主流的存储技术之一, san具有高速度、高可用性、高可扩展性、跨平台、较低的总体拥有成本( tco ) 、远程虚拟存储等特性,为海量数据的存储和管理提供了一个真正的集中式存储解决方案,大型企业的数据存储系统大多是采用san技术。
For this reason , the ultrahigh density optical disk data storage technologies based on the solid immersion lens technology and the sb film super resolution technology , which appear more promising to industrialize in the short term , have been studied in this paper . the aim of this paper is to develop the key technologies for next generation optical disc data storage system 本文围绕超高密度光盘数据存储技术中的固体浸没透镜存储技术以及基于sb多层膜的介质超分辨高密度光存储技术展开研究,其目的在于通过对这两种最接近实用化的近场高密度光存储技术的研究,掌握和发展下一代超高密度光存储设备的关键技术。
A sil flying head is designed to keep the distance between sil and recording medium in near - field range . a sil optical data storage system is built up when the recording head is combined with sil flying head . meanwhile , using astigmatic focusing error detection technology and twin optical pick - up heads , a novel nontouching nanometer measurement method is developed to measure the flying height of sil , and provides us with a powerful tool to optimize the design of sil fly head 在sil存储技术研究方面,首先提出一种光学玻璃热熔加工制作sil的新方法,该方法克服了小半径球透镜加工的难题,成功制作出了半球固体浸没透镜;设计了sil飞行头系统,并利用光学头像散法聚焦误差检测原理,设计出一种双光学头sil飞行高度测量方案,实现了sil飞行头飞行高度的测量。