第7卷‧第5期,
197905
, pp. 429-439
聲波並耦器之設計與建立
- 作者：
陳正; 謝清俊; 潘亞民
- 作者服務機構：
國立交通大學工學院
- 中文摘要：
聲波並耦器（Acoustic coupler）是一種極為簡單的數據傳輸工具，吾人利用電話線之便捷，可將程式資料自遠處終端機輸入，經電話聽筒換成聲波型態送至計算機中心，再換成數位型態送入計算機中運算，運算完成後，再以同樣方法自計算機送同遠處終端機上顯示出來。本研究報告將介紹並說明－種簡易之聲波並耦器之裝置，此種裝置可分為半工式（Half duplex）及全工式（Full duplex）二類，此套裝置之方塊圖如下： 此套裝置已在交通大學數位系統實驗室設計並建立完成，初步利用校區內電話線通信傳輸之結果，效果良好，尤其是全工式裝置，線路簡易，成效良好，穩定性高，極易應用至普通之電話用戶上，唯此套裝置對電話線上之雜音干擾有其一定之限度，此為使用時必須注意之事項，各部份之設計原理及成效分析，將於本文中詳述。
- 英文摘要：
Acoustic coupler is one of the most con-venient way to transmit data between centralcomputer and nonlocal terminal via telephoneline. In this report, we will describe oneacoustic coupler which has been designed anddeveloped in Digital System Lab., NCTU. Itcan be used by either half duplex or full duplexmode. The whole system diagram is shownbelow. In this diagram the I/O signal control cktis used only in half duplex mode. The datafrom central computer or terminal are modulatedinto 1 K or 2 K waveform, represent either“O”or“1”respectively. In full duplex mode, wealso have a filter to distringuish 1 K and 2 Kwaveform. This device has been used success-fully in the campus of NCTU. It is easy tobe applied to general usages. But some noisedisturbance in the telephone line should beavoided and overcome. The detailed informa-tion will be described in the report.
- 中文關鍵字：
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- 英文關鍵字：
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