{风口浪尖}索尼HDR-HC1E

8月索尼推出了业界最小的高清数码摄像机HDR-HC1E。配合专业的技术和功能，它的性能被极大地提升，从而可拍摄并输出专业级高清影像。[编者按]     

{暗夜飞碟}索尼DCR-DVD7E

轻、薄、圆、滑、黑色与银色的有机组合，暗夜里发出的镜头幽明深邃，8cm的DVD光盘承载着简约的记忆。[编者按]     

HDTV雕刻时光

1999年，我们运用索尼提供的技术．拍摄了当时中国第一部高清晰度电视片《深圳24小时》。该片后来还获得索尼公司的认证，并且在业内受到了好评。那一年我写了一篇文章叫《1999我们与HDTV的约会》大意是讲初识这种全新技术的喜悦，以及粗浅的体验与认识。用约会这个词表达当时的所思所想。以我们专业角度讲也许太过于感性了．但实在是真真切切的感受。我还记得在那年北京BRITV，与索尼展位的现场见面会上，迟泽准先生跟我开的一个玩笑：”你大概会被高清晰度电视给惯坏了。看你离开她还怎么去拍片子……。”     

{长相思}索尼NW-HD5

40小时的连续播放时间．保护硬盘的重力感震系统、独有的虚拟动力引擎技术和可随意翻转的白色背光屏幕，索尼的研发人员倾注了所有的技术和心力，铸造了最新的20GB硬盘播放器NW-HD5。[编者按]     

{橙色警报}索尼爱立信W800c

夏天的颜色 W800c将索爱深厚的设计功力体现得淋漓尽致，乳白色的机身配合略带金属光泽的亮橙色点缀，时尚是不言而喻的，巧费心思之处还流露在屏幕周边的银灰色圆点矩阵，填补了过分空白带来的呆板。走年轻路线的W800c确实让人眼前一亮。     

{想听就听}摩托罗拉E685

带上像摩托罗拉E685那样优雅小巧的手机，到哪儿都会因为它的超酷设计而成为焦点，当然，更让人喜欢的是它能携带你所喜欢的音乐，使你随时随地，想听就听。[编者按]     

奥林巴斯E1——{成功的首演}

奥林巴斯E1给人的第一感觉就是舒服。它不比其他任何一款数码单反机大多少，却拥有防水设计的镁合金外壳．人们可将它满满地握在手中，同时也不会觉得有多沉。手柄的橡胶层也很舒适．不用担心会滑手。拇指在相机背面也有橡胶层的保护，即使用单手操作也很稳固。     

图解索尼爱立信T602

轻巧女性爱机 T602是索尼爱立信公司于2002年10月底推出的一款小巧的女性用机。这款手机的重量仅为63克,并且由于采用了无天线外型,整个机身看起来极其细致,就连键盘也专为女性的纤纤细指设计,按键紧凑而细小,顶上当然也少不了手机挂饰孔。 为让使用者按图索需,轻松方便地理     

东芝E800——{东芝的企图}

东芝E800无疑是目前功能最为强大的Pockec Pc，这样一款配置豪华的梦幻机型当然值得强力推荐！尽管其骨灰级的高端定位使它看起来不是那么平易近人     

结合深度学习的雕像面部数字复原方法

针对面部破损的雕像在实际复原过程中容易遭受二次损坏,以及雕像历史影像数据匮乏的问题,提出一种基于深度学习网络,利用单张雕像面部影像实现雕像破损面部数字复原的方法.首先利用深度学习网络对雕像未破损前的单张影像数据进行处理,生成点云,然后通过激光扫描仪获取破损后的雕像点云,最后对两者数据进行配准融合,生成完整的雕像模型,从...     

大型雕塑三维透视纠正系统的研究和开发

由于人眼透视非线性的事实,在对雕塑手稿进行等比例放大后均需根据所观察到的透视效果对大型雕塑进行透视纠正。原来雕塑家需对照手稿人工制作透视正确的放大雕塑,由于大型雕塑体积大,手工制作工作量大,为了减少工作量,文中研究并开发了一种雕塑透视纠正系统。在该系统中,首先读入雕塑手稿的三维扫描模型数据,为雕塑设计者可使用计算机对雕塑模型数据在虚拟环境下进行放大模拟和透视纠正,随后通过将计算机生成的模型分割后进行机械加工得到大型雕塑,从而减少了真实雕塑纠正和放大所耗费的时间。     

Discrete time techniques for time delay estimation

Basic aspects of time delay estimation (TDE) based on sampled signals are investigated. The direct cross-correlation method is analyzed and compared to the average square difference function (ASDF) and the (addition only based) average magnitude difference function (AMDF) estimators, Their relative accuracy is theoretically evaluated, and previous empirical results are explained. It is shown that both the ASDF- and the AMDF-based estimators outperform the direct cross-correlation based estimator for medium-high signal-to-noise ratios. Moreover, the AMDF-based estimator, which avoids any multiplications, significantly reduces the computational complexity of the estimation procedure while offering only a moderate performance loss with respect to the ASDF based estimator     

Internet time synchronization: the network time protocol

The network time protocol (NTP), which is designed to distribute time information in a large, diverse system, is described. It uses a symmetric architecture in which a distributed subnet of time servers operating in a self-organizing, hierarchical configuration synchronizes local clocks within the subnet and to national time standards via wire, radio, or calibrated atomic clock. The servers can also redistribute time information within a network via local routing algorithms and time daemons. The NTP synchronization system, which has been in regular operation in the Internet for the last several years, is described, along with performance data which show that timekeeping accuracy throughout most portions of the Internet can be ordinarily maintained to within a few milliseconds, even in cases of failure or disruption of clocks, time servers, or networks     

显示器的响应时间和拖尾时间

本文肯定了响应时间在静止图形切换场合下的应用价值，同时指出它在活动图像显示中的适用性遭到质疑。根据显示亮度与激励信号的时间关系，提出了亮拖尾时间和暗拖尾时间的确切定义。进而讨论了影响拖尾时间的种种因素以及拖尾时间与响应时间之间的区别和联系。最后，介绍一种简单易行的拖尾时间测量方法。     

Astronomical time

Astronomical time serves as the basis for civil time and is required to describe the orientation of the Earth with respect to an inertial reference frame. The definitions of astronomical time scales are reviewed as well as observational methods. The causes of the variations in the Earth's rotation are explained and a brief overview of international efforts to maintain astronomical time scales is presented     

一种解决时间同步和检测时间抖动方法

在无源时差定位系统中,定位精度和系统稳定性是评价系统优劣的两个重要标准。在对影响二者的因素进行深入研究的基础上,提出一种利用辅助发射站发射时间同步检测信号的方法,通过确保测量站站间时间同步来提高定位精度,同时通过该信号检测测量站测时抖动,理论推导和初步的实验仿真都验证了该方法是有效的,能够提高测时差的精度和增强多站时差定位系统的稳定性。最后,详细介绍了整个系统的工作原理以及主站处理数据的主要流程。     

GPS time transfer

The authors describe the use of GPS (Global Positioning System) for time coordination. When GPS first became available, it provided a quantum leap in time coordination with little or no effort on the part of the user. However, workers realized that with more sophisticated analysis techniques even greater accuracy could be wrung from GPS. The authors describe the level of time coordination these more sophisticated techniques have affected. The principles of GPS time transfer are described with emphasis on the so-called common view method. The sources of error during GPS time transfer are discussed and the various possibilities of reducing them are investigated. Some possibilities for overcoming SA (selective availability of GPS) are also discussed. GPS is additionally shown to be an outstanding tool for the dissemination of Coordinated Universal Time (UTC)