基于ISP技术的现代数字系统设计的实现

ISP技术是一门正在兴起的新技术 ,是新一代电子设计工程师及从事电子技术开发和研究人员的必备技能。本文以足球游戏数字系统为例 ,简要说明基于 ISP技术的现化数字系统的模块化设计方法。     

基于单片机的CPLD在系统动态配置

以51单片机和Lattice公司的ispLSI2032为例,介绍了一种利用微控制器动态配置CPLD器件的方法。将配置文件存放在只读存储器中,利用ISP(在系统可编程)技术,单片机在内部软件程序的控制下,读取存储器配置信息,并将其转换为具有准确定时的串行数据流,通过编程接口移入ispLSI2032,实现对ispLSI2032的动态配置。     

基于USB2.0的半导体激光雷达数据传输接口的设计与实现

高速数据传输接口是半导体激光成像雷达系统的重要组成部分.简要地介绍了基于USB2.0总线的半导体激光雷达数据传输接口的开发过程,系统地阐述了半导体激光雷达数据传输接口的软硬件设计.实验结果表明,该传输接口工作稳定,平均传输速度达到48Mb/s,能够较好地满足半导体激光雷达图像的实时传输要求.     

ISP技术在智能家居安防系统中的应用

介绍了W78E58B在线系统编程技术以及智能安防系统的组成,提出了在智能安防系统中用RS-485总线与ISP技术实现远程系统升级的方案,并讨论了提高远程系统升级可靠性的方法。     

ISP技术在单片机实验教学中的应用

该文主要结合单片机实验教学,阐述ISP技术在单片机实验中的应用、优势,同时阐述了几个应用中的小例子。     

Particulate Matter Intervention Study: A Causal Factor of Building-Related Symptoms in an Older Building

Abstract Five floors of a 20-year old 6-story office building were investigated using an integrated step-by-step investigation strategy. This involved a walkthrough inspection, an occupant questionnaire, and targeted environmental monitoring of indoor air quality and comfort parameters. The initial questionnaire survey revealed a high occurrence of building-related symptoms. The walkthrough inspection and environmental monitoring identified deposits of surface dust (indoor surface pollution – ISP) on carpets and hard surfaces, and elevated levels of carbon dioxide and respirable suspended particulate matter (RSP) throughout the building. An intervention study (blinded to the occupants) was targeted at reducing ISP levels by replacing normal carpet cleaning practices with higher performance vacuum cleaners and improved cleaning practices. The intervention reduced ISP levels and significantly lowered RSP concentrations by approx. 80% from initial values and against control floors. A follow-up SBS questionnaire revealed significant reductions in all but two of the symptoms. The most significant reductions occurred with symptoms of eye irritation, throat irritation, dry unproductive cough, and nose irritation. The study showed that in older buildings with poor ventilation, a build-up of ISP, and elevated RSP levels, using higher performance carpet cleaning practices can reduce RSP to acceptable levels and can reduce SBS symptoms.     

Composition and Structural Characteristics of Isolated Soy Proteins from Broken and Damaged Seeds

RACT ISOLATED soy proteins (ISP) from broken (mechanical action) or damaged (fungi) seeds had denaturation enthalpies (AH) and temperatures at peak maximum (T max) similar to those of ISP from normal seeds by DSC. They had different composition and/or conformation as measured by surface hydrophobic@ (So and Se) and SH and SS content. Also, damaged seeds produced ISP with less 7S fractions (due to fewer α and β subunits) and 11S fractions, suggesting proteo-lysis. 7S and 11S fractions had different Tmax and ΔH, SH and SS contents and surface hydrophobicity. Also 7S proteins from damaged seeds showed less a and β-subunits. The 11S proteins from broken and damaged seeds maintained gel forming properties in spite of structural differences. Isolation and characterization of 7S and 11S fractions partially accounted for changes in physicochemical properties of the ISP.     

互联网站点实现来自不同ISP用户的快速访问——智能DNS解决方案

目前中国有中国电信、网通、移动、联通、铁通等ISP（互联网服务提供者），由于各ISP通信网络互联的成本、地域及其他因素，各ISP用户访问位于其他ISP的互联网站点速度较慢且不稳定，严重影响了用户体验和互联网发展。目前各大网站都通过各种办法解决这个问题，如托管于BGP机房、使用两套域名等。文中阐述了一个切实可行且成本相对较低的解决方案，即在各重要ISP建立网站镜像，并通过建立智能DNS（域名服务），引导用户访问速度最快的网站镜像的方案；重点描述实现智能DNS的方法。     

STC单片机集成下载器的设计与实现

为了解决STC单片机程序快速高效升级的问题,提出了基于嵌入式片上系统（SOC）的STC单片机集成下载器的方案。该下载器先通过串口从PC得到要下载的HEX文件,保存到其Flash中后,便可以快速对目标系统中的STC单片机进行批量程序下载。介绍了下载器的硬件原理、STC单片机下载协议和编程器的软件设计方法。     

评析互联网服务提供商保护网络版权的责任(英文)

数据显示,不同形式的网络版权侵权行为正在急速增长,而这些侵权案件也正日益成为互联网服务提供商的负担。本文通过讨论互联网服务提供商的职能和网络版权的主要特点,认为互联网服务提供商要加强自身的技术管理能力,同时提高网络版权保护的责任。通过介绍美国和韩国的相关经验也可以看出,政府在相关立法方面也扮演着重要角色。2006年颁布的《信息网络传播权保护条例》和2010年开始实施《侵权责任法》是一个巨大的进步,它们更明确地对互联网服务提供商的权利与义务进行了规范。