JPH0221945U

JPH0221945U -

Info

Publication number: JPH0221945U
Application number: JP10035988U
Authority: JP
Priority date: 1988-07-28
Filing date: 1988-07-28
Publication date: 1990-02-14

Description

[Brief explanation of drawings]

第１図は本考案の基本的構成を示す図、第２図
は本考案を適用したフアクシミリ装置のシステム
回路図、第３図はＲＳ―２３２Ｃ、接栓、デイジ
タルスイツチ群、電圧検出回路、及びＩ／Ｏポー
トに相当する部分の詳細な回路図、第４図は相手
機接続時の制御手順を示すフローチヤートである
。１……通信インターフエイス、２……相手機、
３……接続用接栓、４……第１電圧検出手段、５
……第２電圧検出手段、６……第１スイツチ群、
７……第２スイツチ群、８……判定手段、９……
スイツチ制御手段。 Figure 1 is a diagram showing the basic configuration of the present invention, Figure 2 is a system circuit diagram of a facsimile device to which the present invention is applied, and Figure 3 is a diagram showing the RS-232C, plug, digital switch group, voltage detection circuit, and A detailed circuit diagram of a portion corresponding to the I/O port, and FIG. 4 is a flowchart showing the control procedure when connecting to a partner device. 1... Communication interface, 2... Partner machine,
3... Connection plug, 4... First voltage detection means, 5
... second voltage detection means, 6 ... first switch group,
7... Second switch group, 8... Judgment means, 9...
Switch control means.

Claims

[Scope of utility model registration request]

a first voltage detection means for detecting a voltage between a data set ready terminal and a signal ground terminal of a connection plug for a partner device of the communication interface; and a voltage between a data terminal ready terminal and a signal ground terminal of the connection plug; A second voltage detection means for detecting
Switch and connect each connection line on the first switch group side to the corresponding input terminal or output terminal side on the communication interface side between the first switch group to be turned on/off and the first switch group and the communication interface. a second switch group, a first voltage detection means, and a second
determination means for determining whether the other device connected to the connection plug is a data terminal device or a data line termination device based on the detection data of the voltage detection means; and a first switch group when the other device is connected. OF
F state, and after controlling the second switch group based on the determination result of the determination means and connecting each connection line on the first switch group side to the input terminal side or output terminal side of the communication interface, the first switch group is 1. A connection control device for a communication interface, comprising switch control means for turning on a group of switches.