Teleconference System using The SINET.

1994年，日本的许多大学和研究机构都连接到称为SINET（科学信息网工作）的Internet主干网。在此基础上，我们尝试在SINET上建立一个医学远程会议系统，该系统由WWW服务器、真实的实时视频会议服务器（reflector）、FTP服务器、RealAudio服务器和邮件列表服务器组成。由于网络带宽不足和调度问题，真实的时间视频会议在我们的情况下被认为是不够的。因此，会议系统是基于WWW和电子邮件。通过HTML创建患者数据和图像，并使用IP地址和密码认证上传到服务器。最近，基于GUI的HTML编辑器使我们能够非常容易地创建和上传WWW内容。讨论在邮件列表上。图像数据以300dpi扫描，并经轻度压缩处理为jpeg格式。临床和组织病理学图像数据高达100 Kbyte，使客户端计算机访问图像舒适。X射线图像的数据大小与原始胶片大小成比例地增加。因此，根据需要剪切X射线图像和/或上传至ftp服务器。实时音频点播系统RealAudio提供了交互式的网络会议，我们的结论是，基于互联网（WWW和电子邮件）的电话会议系统是有用的所有医疗和临床领域。

In 1994, many universities and research institutes in Japan had connetcted to the Internet backbone called the SINET (Science Information NET work). Every office and laboratory were connected to the Internet via the campus LAN's and the SINET.Under this network infrastructure, We were try to make a medical teleconference system on the SINET.The server consisted of the WWW server, real time video conferencing server (reflector), ftp server, RealAudio server and mailing list server. Client personal computers can access this server via the SINET.Because of poor network bandwidth and scheduling problem, real time video conference was deemed inadequate in our situation. Thus, the conference system was based on WWW and email. Patient's data and images were created by HTML and uploaded to the server with IP address and password certification. Recently, GUI based HTML editor enable us to create and upload the WWW contents very easily. The discussion were on the mailing list. Image data were scanned by 300dpi and were processed to jpeg format with mild compression. Clinical and histopathological image data were up to 100Kbyte, so that the client computers accessed images comfortably. Data size of X-ray image increases in proportion to original film size. Thus, X-ray images were cut out and/or uploaded to ftp server as necessary. Real-time audio-on-demand system called RealAudio provides interactive web conference.It is our conclusion that the Internet (WWW and email) based teleconference system is useful for all medical and clinical fields.