SERIAL TRANSMISSION SYSTEM CONVERSION DEVICE

• Main Author: NAGASHIMA KENICHI
• Format: Patent
• Language: English; Japanese
• Published: 01.02.2018
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

PROBLEM TO BE SOLVED: To securely execute transmission between a device of a full-duplex communication system and a device of a half-duplex communication system.SOLUTION: A serial transmission system conversion device 1 includes: a full-duplex transmission circuit 11 which converts half-duplex reception data of the half-duplex communication system, which is input from a half-duplex communication device 30, into full-duplex transmission data of the full-duplex communication system; a full-duplex reception circuit 12 which converts full-duplex reception data of the full-duplex communication system, which is input from a full-duplex communication device 20, into half-duplex transmission data of the half-duplex communication system; a half-duplex transmission/reception selection circuit 13 which generates a half-duplex transmission/reception selection signal to instruct, if half-duplex transmission data is in an idle state, to receive the half-duplex reception data, whereas instruct, if there is half-duplex transmission data, to transmit the half-duplex transmission data; and a half-duplex transceiver 14 which, based on the half-duplex transmission/reception selection signal, changes over the half-duplex communication device 30 between the reception of the half-duplex reception data and the transmission of the half-duplex transmission data.SELECTED DRAWING: Figure 1 【課題】全二重通信方式の装置と半二重通信方式の装置との伝送を確実に実現する。【解決手段】シリアル伝送方式変換装置１は、半二重通信装置３０から入力された半二重通信方式の半二重受信データを全二重通信方式の全二重送信データに変換する全二重送信回路１１と、全二重通信装置２０から入力された全二重通信方式の全二重受信データを半二重通信方式の半二重送信データに変換する全二重受信回路１２と、半二重送信データがアイドル状態の場合には半二重受信データの受信を指示し、半二重送信データがデータ有りの場合には半二重送信データの送信を指示する半二重送受選択信号を生成する半二重送受選択回路１３と、半二重送受選択信号に基づいて、半二重通信装置３０に対して、半二重受信データの受信と半二重送信データの送信とを切り替える半二重トランシーバ１４と、を備える。【選択図】図１