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A Measuring Solution for Mechanical Characteristics of MO Disks

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Wuhan University Journal of Natural Sciences 2001年第4期6卷 769-774页

作者： pei xian-deng Wang Hai-wei Xie Chang-sheng Liu Ben-xi National Storage System Laboratory Huazhong Univ. of Sci. and Technol. Wuhan 430074 China

Mechanical characteristics of MO disk are vital for the designer of the drives and the manufacturers who provide the mass-product MO disks. So measuring mechanical characteristics is very significant. We compares the existing measuring methods and gives some novel measuring methods we adopted in details. The measuring system based upon these methods was introduced too. Some typical measuring results are also shown in this paper.

关键词： MO disk mechanical characteristics precision grating track counting laser triangulation method

光存储器中激光头与盘片间垂直度测量方法的研究

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小型微型计算机系统 2008年第7期29卷 1196-1199页

作者：裴先登孔令罔黄浩华中科技大学计算机科学与技术学院湖北武汉430074

提出基于激光头光斑偏移量的激光头-盘片垂直度测量的方法.在光线追迹基础上推导出激光头光斑的偏移量模型(方程)并对该模型实现的条件进行了分析.在数学形态学算子、Hough变换算法基础上设计出用于光斑中心检测的混合算法.试验表明,该... 详细信息

提出基于激光头光斑偏移量的激光头-盘片垂直度测量的方法.在光线追迹基础上推导出激光头光斑的偏移量模型(方程)并对该模型实现的条件进行了分析.在数学形态学算子、Hough变换算法基础上设计出用于光斑中心检测的混合算法.试验表明,该混合算法可实现光存储器出射激光光斑像素级的精确定位;同时该测量方法对合格的商用DVD光存储器的激光头-盘片的倾斜角检测具有较高的宽容度.

关键词：光存储器垂直度测量激光光斑中心检测

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磁光盘轴径向偏摆和加速度的测试方法与实现

小型微型计算机系统 2000年第10期21卷 1021-1024页

作者：裴先登程裕霞刘本喜华中理工大学计算机科学技术学院武汉430074

本文简述了测试磁光盘机械特性的重要性 ,论述了磁光盘轴、径向参数的测试方法 ,着重介绍了我们的测试系统采用的测试方法、原理及实现 .

关键词：磁光盘机械特性径向偏摆加速度测试方法

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基于MPEG-4的嵌入式DVR分析与实现

计算机应用研究 2005年第4期22卷 186-187,215页

作者：裴先登许琼涛黄浩华中科技大学计算机学院信息存储系统国家专业实验室暨教育部重点实验室湖北武汉430074

介绍了DVR(DigitalVideoRecoder)的现状,着重分析了MPEG 4核心思想和关键技术在嵌入式DVR应用中的优势,给出了其具体实现。

关键词： MPEG-4 数字视频录像机或硬盘录像机嵌入式对象

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iSCSI协议在DVR中的应用

计算机工程与科学 2005年第7期27卷 34-36页

作者：谢品裴先登黄浩华中科技大学计算机科学与技术学院信息存储系统国家专业实验室暨教育部重点实验室湖北武汉430074

本文介绍了iSCSI这一新兴的网络存储协议,并且将它应用于信息家电DVR的开发中。在设计中,将DVR作为iSCSI协议的target端与PC互连,模拟成PC的一个外接DVD+RW刻录机,以达到扩充DVR功能的目的。

关键词： iSCSI SCSI DVR

多阶段决策方法用于6∶8优化映射等重调制码的设计

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计算机学报 2005年第2期28卷 220-226页

作者：陈端荣谢长生裴先登肖卫军湖北大学数学与计算机科学学院武汉430062 华中科技大学计算机科学与技术学院武汉430074

6∶8等重调制码是全息存储记录通道中的一种有效通道码.然而,各种各样的噪声源和符号间串扰极易使检测到的一个等重码字与原等重码字相比发生一个0与1之间的2 码元交换错误事件(2 BREE).对于 6∶8 二进制顺序映射等重调制码(NCWMC)而言... 详细信息

6∶8等重调制码是全息存储记录通道中的一种有效通道码.然而,各种各样的噪声源和符号间串扰极易使检测到的一个等重码字与原等重码字相比发生一个0与1之间的2 码元交换错误事件(2 BREE).对于 6∶8 二进制顺序映射等重调制码(NCWMC)而言,由此导致在一个6比特数据字中平均产生约3比特误码.作者借助多阶段决策方法和贪心算法,设计出一种6∶8优化映射等重调制码(OCWMC).6∶8 OCWMC与6∶8 NCWMC相比,一个2 BREE所致的平均误比特数下降了0.5844比特.文章以 4∶6 OCWMC的设计为例,详细介绍了其设计过程.误码性能的仿真实验结果表明:6∶8 OCWMC比6∶8 NCWMC更适宜应用于具有严重的符号间串扰和噪声的全息存储记录通道.

关键词：全息存储等重调制码多阶段决策贪心法符号间串扰

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一种直接测量光盘道间距的方法

激光与红外 2000年第2期30卷 115-116页

作者：王海卫裴先登刘本喜谢长生华中理工大学外存储国家专业实验室武汉430074

介绍了一种能够直接 ,精确测量光盘道间距 ( Track Pitch)的实用方法。整个测试系统的框图 ,测试结果以及结果分析也一并给出。

关键词：光盘道间距测量

A novel active-passive protection strategy endows carbonyl iron with excellent intelligent anti-corrosion and microwave absorption dual functional characteristics

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Nano Research 2025年第1期18卷 487-500页

作者： Wei Tian Quanyuan Feng Linbo Zhang Yinfan Liu xian Jian Longjiang deng Institute of Microelectronics School of Information Science and TechnologySouthwest Jiaotong UniversityChengdu 611756China National Engineering Researching Centre of Electromagnetic Radiation Control Materials Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of EducationState Key Laboratory of Electronic Thin Films and Integrated DevicesSchool of Electronic Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengdu 611731China School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731China The Yangtze Delta Region Institute(Huzhou)&School of Electronic Science and Engineering University of Electronic Science and Technology of ChinaHuzhou 313001China

Carbonyl iron absorbers(CI)face significant challenges in practical applications,such as corrosion,interface bonding failure,detachment,and high maintenance ***,we have developed intelligent self-healing technology based on proactive/passive mechanisms via in situ synthesis of self-healing factors(polydopamine/benzotriazole(PDA/BTA))and physical barrier layers(SiO_(2)/1,1,1,3,3,3-hexamethyl disilazane,SiO_(2)/HMDS)to enhance corrosion resistance,while also being compatible with efficient microwave absorption *** unique multiscale structure gives full play to the utilization of the roles of each functional layer,including the intelligent self-healing features of PDA/BTA,physical shielding and spatial confinement characteristics of SiO_(2)/HMDS,and magnetic-dielectric synergistic mechanism resulted from the good impedance matching characteristics,the conduction loss,the interfacial polarization loss and natural *** asfabricated composites achieved an exceptional minimum reflection loss value of-55.4 dB at 10.7 GHz and the effective absorption band of 7.6 ***,it still exhibits obvious self-healing and corrosion resistance characteristics after 360 h corrosion treatment,ascribed to the self-healing mechanism of PDA/BTA and the blocking intervention effect of SiO_(2)/*** work is considered to pave the way for the synthesis of high-performance magnetic absorbers,especially in enhancing their intelligent self-healing ability in corrosive environments.

关键词： microwave absorption intelligent self-healing technology carbonyl iron multiscale structure magneticdielectric synergistic mechanism

Measurement of the Waveguide Near-field Optical Spot

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Semiconductor Photonics and Technology 2003年第2期9卷 123-127页

作者： XIA You-xin,pei xian-deng,HUANG Hao,XIE Chang-sheng,WANG Hai-wei(National Storage System Lab.,Huazhong University of Sci.& Technol.,Wuhan 430074,CHN) Huazhong University of Sci. & Technol. National Storage System Lab. Wuhan 430074

The characteristic of near-field spots is *** size of the near field and the heat response time of the hybrid record medium to overcome super paramagnetic effect are calculated based on the heat transfer theory. A novel measuring method for the diameter of near-field recording spot is also presented. Since the grain of the recording media is tiny enough,near-field optical lithography can be accomplished with the aid of atomic force microscope (AFM).The diameter of near-field recording spot can be obtained by specifically designed *** the relationship between the near-field recording spot diameter and the probe size of near-field recording system, the near field recording distance coupling between head and disc can be got.

关键词： evanescent energy AFM near―field recording spot near―field opticallithography