Incorporation of the Wireless Infrared Ray Transmission into Learning and Instructional System for Foreign Language Education

这项研究是为了评估可能的局域网教学系统的价值，在这种系统中，教师可以在免费的教学布局下对语言学习者进行管理。这种教学系统是通过使用光扩散-传输无线红外线传输系统和一台笔记本电脑实现的。该系统采用IEEE802.3 10BASE-T中采用的CSMA/CD(载波侦听多路访问/冲突检测)，在检测信号冲突方面优于CSMA/CA(具有冲突避免的CSMA)。在该系统中，正在运行一个在计算机课堂上教师和学生之间传递信息的程序。此外，还内置了教师和学生之间的双向语音通信系统。这使得教学系统满足了提高“读”、“写”、“听”、“说”四项技能的需要，但也存在一个问题，即双向语音通信系统不能实时运行。由于卫星广播和海外通话中经常出现的声隙让我们感到不适，我们观察到了超过1秒的声隙。这项研究得出的结论是，利用无线红外线传输系统进行外语教育可能会方便甚至节省整个教育计划，因为学习者只需将自己的笔记本电脑带入普通教室，而不是奢侈的LL或计算机室。

This research was undertaken to assess the value of the possible LAN instruction system where an instructor can administer to language learners at a free instructing layout.This instruction system was made possible with the use of the light diffusion-transfer wireless infrared ray transmission system and a notebook computer. The system uses CSMA/CD (Carrier Sense Multiple Access with Collision Detection) which has been adopted in IEEE802.3 10BASE-T, thus excelling CSMA/CA (CSMA with Collision Avoidance) in detecting a signal collision.In the system a program to transfer information between an instructor and learners in a computer class is being operated. In addition, two-way voice communication system between an instructor and learners is built in. This resulted in the instruction system to cope with the need of improving four skills as "reading," "writing," "listening," and" "speaking".There is, however, a problem found in the system, in that the two-way voice communication system can not be operated real-time. As sound gaps seen in satelite broadcasting and heard in overseas calls often discomfort us, the sound gap of over one-second delay has been observed.This research has arrived at the conclusion that foreign language education utilizing wireless infrared ray transmission system may convenience and even economize the whole education plan, in that learners only need to bring in their own notebook computers into the ordinary classroom, not an extravagant LL or a computer room.