Focal depth plays an important role in optical storage systems, and high focal depth makes the focusing servo system easy to track the disk surface.
焦深在高密度光盘存储系统中具有十分重要的作用，大焦深可以使调焦伺服系统容易跟踪盘面。
The very small aperture laser (VSAL) is a important light source used in the near-field optical storage system. So it is necessary for studying the near-field property of VSAL s output light.
微孔激光器（VSAL）作为应用于近场光存储系统中的一种新型光源，它的出射光斑的近场特性对于近场光存储是十分重要的。
It is available to improve optical storage density by using short wavelength laser, but a harder focusing servo system is need.
采用短波长激光光源是实现高密度光存储的一种有效途径，但是对聚焦伺服系统提出了更高的要求。
Introduces the issues on application of CCTV system based on the MPEG-4 compression, SDH optical transmission and large capacity hard disc storage technologies in urban rail transportation.
介绍了基于MPEG - 4压缩技术、SDH光纤传输技术和大容量硬盘存储技术的电视监控系统在城市轨道交通中的应用问题。
A novel digital information storage system for diffraction optical variable image devices is proposed.
研制了一种新型数字化衍射光变图像的存储系统。
Analysis of the optical channel of a photochromic multi-level storage system is the basis of the design of signal-processing sub-systems.
光致变色多阶存储系统的光学通道分析是分析和设计后续信号处理部分的前提。
The solutions for optical mass storage system and their principles are analyzed briefly, based on which, the key technologies for the improvement of the recording density are discussed.
在此基础上，扼要分析了现有提高存储器存储密度的思路及关键技术，给出当前国际先进水平的技术指标。
The low pass nature of the optical systems used for the volume holographic storage system results in the presence of intersymbol interference (ISI) at the output of the system.
体全息存储系统中光学系统的低通的特性导致了输出的页内串扰。
Spot size detection method is representative method to obtain a focus error digital optical disk storage system.
光斑尺寸法是数字光盘信息存储中的典型聚焦误差探测方法。
By the use of the fiber optical head, the average access time of the storage system is decreased effectively.
其读写系统使用了飞行式光纤光学头，极大程度地降低了平均寻道时间。
In order to accurately, explicitly illustrating this technology, this paper is divided into five chapters: 1. optical holographic storage system.
为了准确清楚地阐述这种加密方法，本文分五章来加以分析：1。全息光存储技术。
An optical image recognition system based on the volume holographic storage technology is constructed. It is applied to an "electronic guard" system based on the real time human face recognition.
构建了基于体全息存储技术的光学图像识别系统，应用在以实时人脸识别为基础的电子门卫系统中。
An optical image recognition system based on the volume holographic storage technology is constructed. It is applied to an "electronic guard" system based on the real time human face recognition.
构建了基于体全息存储技术的光学图像识别系统，应用在以实时人脸识别为基础的电子门卫系统中。
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