DEVELOPMENT OF HOME HEALTH CASE SYSTEM USING WIRELESS INTERNET

我们为远程放射学构建了一个经济紧凑的传输系统，即使在灾难中也可以使用。我们的系统可以使用有线局域网或移动的无线局域网传输图像和诊断报告。另一方面，通过便携式电话线、无线LAN（Japan Radio Co.，（香港）和Apple Remote Access（Apple CO.，（香港）对于1MB数据包，使用有线LAN、移动的无线LAN和ARA移动的有线LAN系统的传输时间分别需要5秒、13秒和625秒。根据我们的测量结果，在3MB的1张图像大小下，有线LAN比移动的无线LAN快4倍。这是因为移动的无线电话线有时会有恶劣的空中传输环境，必须通过纠错功能进行补偿。各种类型的图像相关信息的链式结构工作良好，具有足够的速度。但受害者身份识别、隐私和安全问题等重要功能必须通过模拟大地震等灾害环境来评估。

We built an economical and compact transmission system for teleradiology that could be utilized even in a disaster. Our system can transmit images and diagnostic reports using wired LAN or mobile wireless LAN.The system adopts conventional Ethernet LAN as a wired LAN. On the other hand, transmission systems by the portable telephone line, wireless LAN (Japan Radio CO., Ltd.) and Apple Remote Access (Apple CO., Ltd.) as a mobile wireless LAN are employed.Five seconds, 13 seconds and 625 seconds of transmission time employing wired LAN, mobile wireless LAN and ARA mobile wired LAN system were necessary for 1MB package of data respectively. At 3MB of 1 sheet image size, wired LAN was 4 times faster than that of mobile wireless LAN according to the result of our measurement. The reason is that mobile wireless telephone line has sometime bad air transmission environment and it has to be compensated by error correction function.Chained structure of various type of image related information worked well with enough speed. But important functions such as victims identification, privacy and security problems must be evaluated by simulation of disaster environment such as big earthquake.