摘要
介绍了一种基于局域网环境下校园卡圈存的新思路和新方法，校园用户可先通过网上银行把银行的钱转入学校，其次在学校的网上交易系统上进行校园卡充值支付，最后在简易圈存机上进行刷卡以完成把交易的金额写入校园卡的操作。数据采集系统中心的监控软件通过UDP协议并采定一定的技术处理完成圈存机监控、数据采集等一系统的功能，数据采集系统在、NET架构下采用C#．net语言进行开发，配合先进的ADO.net数据访问技术和多线程Socket（套接字）网络编程技术分别成功地实现了数据的存储管理和数据通信；通过一定的技术处理弥补了UDP协议的不足。
2D bar code which is reached by camera, cell-phone and shoot-caput generally exists high-light area, shadow, low resolving power, illegible effect. If high-effect deoxidized and rehabbed picture can＇t be reached, it will can＇t be nicely decoded or decoded at all. The article discusses QR code which is shot by shoot-caput and has illegible effect, researches barcode-picture which is limited by some complexity, and brings forward orbicular pretreatment arithmetic.
作者
张军
汤彬
阮群生
ZHANG Jun,TANG Bin, RUAN Qun-sheng（East China Institute of Technology Software Institute, Changsha 330013, China）
出处
《电脑知识与技术》
2008年第2期641-644,共4页
Computer Knowledge and Technology
