论文部分内容阅读
我国历史悠久,幅员辽阔,人口众多,文字繁难,所形成的档案数量大,形式杂,迫切要求缩小保存空间,实行自动检索。现代计算机存储手段不能容纳大量的汉字档案,普通缩微照相技术因密度不够高,实现与计算机自动检索有困难。为此我们研究了大容量,高密度全息档案存储和检索系统。对原始资料的缩微倍率大于150倍,与计算机联机检索容量至少四百万页。由于使用自制高性能全息记录材料,再现像可直接投影到显示屏上供阅读和监视
Our country has a long history, a vast territory, a large population, and complicated writings. The large number of archives formed and the complexity of forms require an urgent reduction of storage space and the implementation of automatic retrieval. Modern computer storage means can not accommodate a large number of Chinese characters files, ordinary microfilm technology due to the low density, automatic retrieval with the computer difficult. To this end, we have studied large-capacity, high-density holographic file storage and retrieval systems. The microfilm ratio of the original data is more than 150 times, and the online retrieval capacity of the computer is at least 4 million pages. Due to the use of self-made high-performance holographic recording material, the reproduced image can be directly projected onto the display for reading and monitoring