基于家用DV摄像机制作DVD视频的方法

随着数码摄像机的流行、家用多媒体计算机的普及、以及DVD刻录机也逐渐成为计算机的标准配置,制作DVD视频不一定需要专业人员和专业的设备。对普通用户而言,只要拥有了必须的软硬件系统并掌握了制作流程与方法,自己制作DVD视频也就成为可能。     

DVD的三种可重写光盘格式

简要地介绍和讨论了DVD的三种可重写光盘即DVD—RW、DVD RW和DVD—RAM的特点和格式。     

Development of a novel profile measurement system for actively planed surfaces

The importance of a reliable and robust surface profile measurement system in the inspection of surface finish is beyond any doubt. For years, visual inspection has been employed in industries to determine the quality of surface finish. Since, in most cases, it fails to ensure a consistent minimum standard of finish quality, mechanical stylus based measurement systems have successfully taken over from human inspection. However, in recent years, the trend is to explore other techniques for conducting the surface profile measurements. Non-contact optical methods have emerged as one of the leading candidates. A target application concerning the surface quality of wooden products requires the use of non-contact techniques to avoid surface damage. This paper deals with a non-contact optical surface profile measurement system based on the pickup of a commercially available DVD player. Significant cost reduction and seamless integration of the sensor into a manufacturing process line may be achieved with the proposed method. The performance of this DVD profilometer with samples of Delrin nylon and hardwood has been analyzed and discussed in this paper. It has been shown that the measurement results show good correlation with the benchmarks obtained with the help of a leading commercial profilometer, the Talysurf.     

一种移动介质的新型车载影音系统

随着互联网迅速发展,其影音、歌曲资源越来越丰富,实时更新的速度非常快,人们可以通过移动介质将电影、电视剧、歌曲等集中存储,以方便携带。本文研究基于移动介质的低价位高性能车载影音系统,其将取代现有高价位以DVD机芯为载体的影音系统,使车载影音系统真正普及到家用轿车上,具有良好的市场前景。本文从系统工作原理、整体设计、硬件、软件上分别描述。     

量子阱光电子器件的发展与中国光电子器件产业的形成

光电子技术发展推动着信息时代的变革,作为其心脏的半导体光电子器件正带动着一个新兴产业--光电子产业。 量子阱激光器是半导体激光器发展的第三里程碑。因为其性能优越,成为一代理想的激光器,在光通信、光存储、光显示等方面得到应用。 目前,中国光电子产业已具雏形,已有多家光通信器件制造公司形成年产亿元以上产值。而以光存储、光显示为代表的非通信光电子器件发展势头极其迅猛。其国产化带动数字音像和数字存储产业、全色显示屏、汽车灯、交通灯以至固体白光灯等产业,年产值规模可望在百亿以上     

DVD Video播放机主控制程序的研究与实现

主控制程序是DVD播放机、DVD COMBO(同时拥有CD刻录和DVD播放功能)、DVD刻录机等未来多媒体主流产品中共有的核心技术之一。在基于Intel 80C25l微控制器的硬件基础上提出了DVD video播放机的一种整体设计方案,以模块化方法实现了DVD video播放机的主控制程序,并对其功能的拓展做了进一步的探讨。     

DVD光学头伺服误差信号分析

本文对DVD光学头采用像散法提取聚焦伺服信号时慧差对探测器上光斑形状的影响进行了分析,重点讨论了聚 焦误差信号的分析和循迹误差信号的分析,并给出了相应的实验结果,指出了实际操作中聚焦伺服的离焦范围和光栅调整到 位与否的判断方法。     

车载DVD伺服抗振性能的研究

通过分析振动对车载DVD伺服的影响，得出了提高抗振性能的措施。     

选单节目制作浅析

视频选单节目可以通过播放机进行遥控播放操作或使用计算机来进行节目的搜索和按序播放，控制非常便利，节目一般是以VCD，SVCD，DVD(包括MiniDVD)等形式组成的素材。探讨选单型VCD，SVCD，DVD等的制作过程。     

Survey of the annual technical reports on patent information activities in the year 2000 (part 1: A–J)

The activities in the year 2000 of some 24 intellectual property offices and organisations world wide in the field of patent information are summarised. The summary is presented under nine standard headings, as far as relevant, for each country. Activity varies enormously from just a handful of applications through to CA (39K), DE (62K), and EP (143K), the numbers continuing to increase significantly in most countries. This is the first of two parts, covering 50 countries and organisations; this part deals with those having WIPO codes starting A–I, and Jamaica.