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，教师可以在一个自由的教学布局中对语言学习者进行管理。该指令系统是利用光扩散传输无线红外线传输系统和笔记本电脑实现的。该系统采用了IEEE802.3 10BASE-T中采用的CSMA/CD （Carrier Sense Multiple Access with Collision Detection）技术，在检测信号碰撞方面优于CSMA/CA （CSMA with Collision Avoidance）技术。在计算机课堂上，一个程序在教师和学习者之间传递信息。此外，还内置了教师与学习者之间的双向语音交流系统。这导致了教学系统要满足提高“读”、“写”、“听”和“说”四项技能的需要。然而，在系统中发现了一个问题，即双向语音通信系统不能实时运行。在卫星广播和海外通话中听到的声音间隔经常让我们感到不安，因此已经观察到超过一秒的延迟的声音间隔。本研究得出结论，利用无线红外线传输系统进行外语教育可以方便甚至节省整个教育计划，因为学习者只需要将自己的笔记本电脑带入普通教室，而不需要将豪华的LL或电脑室带入。

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.