JPH0519909A - Power unit for modem - Google Patents
Power unit for modemInfo
- Publication number
- JPH0519909A JPH0519909A JP3171490A JP17149091A JPH0519909A JP H0519909 A JPH0519909 A JP H0519909A JP 3171490 A JP3171490 A JP 3171490A JP 17149091 A JP17149091 A JP 17149091A JP H0519909 A JPH0519909 A JP H0519909A
- Authority
- JP
- Japan
- Prior art keywords
- modem
- power source
- control signal
- power
- host system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Power Sources (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はモデムの電源装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply device for a modem.
【０００２】[0002]
【従来の技術】従来モデムの電源のオン・オフは通常の
パワースイッチを電源部に設け、人手によってこのスイ
ッチを入れたり切ったりすることによって行っていた。2. Description of the Related Art Conventionally, the power of a modem has been turned on and off by providing an ordinary power switch in the power source and manually turning on and off the switch.
【０００３】[0003]
【発明が解決しようとする課題】一般にモデムはシステ
ム中において周辺装置として考えられており、その電源
の投入・切断は通信する時にモデムの電源を入れ使い終
った時点で電源を落すという手順を踏んでいた。Generally, a modem is considered as a peripheral device in a system, and its power-on / power-off is performed by turning on the power of the modem at the time of communication and turning off the power at the end of use. I was out.
【０００４】しかしながらモデムの使用頻度は最近高く
なりつつあり、特にオンライン端末等のシステムによっ
ては常時使用されることもある。このような場合にユー
ザがモデムを使用する度に電源をオン・オフするのでは
非常に煩しく効率が悪いという問題がある。However, the frequency of use of the modem has been increasing recently, and it may be always used depending on the system such as an online terminal. In such a case, it is very troublesome and inefficient to turn on / off the power every time the user uses the modem.
【０００５】[0005]
【課題を解決するための手段】本発明のモデムの電源装
置は、ホスト・システムからの制御信号、たとえばホス
ト・システムとモデムとの間を結ぶＲＳ２３２Ｃインタ
フェースで定義されている＋５ボルト信号、を受けて電
源部をオンする信号検出回路を有する。SUMMARY OF THE INVENTION The modem power supply of the present invention receives control signals from the host system, such as the +5 volt signal defined by the RS232C interface between the host system and the modem. And a signal detection circuit for turning on the power supply unit.
【０００６】[0006]
【実施例】次に本発明をその実施例について図面を用い
て説明する。Embodiments of the present invention will be described below with reference to the drawings.
【０００７】図１を参照すると、本発明の一実施例では
ホスト・システム（図示せず）とモデム３との間を結ぶ
ＲＳ−２３２Ｃインタフェース中の＋５ボルト信号を電
源制御信号として用い電源制御信号端子５に加える。モ
デム３の電源部は電源１と制御信号検出回路４とを一次
側に有し二次側をモデム３に接続したトランス２を有す
る。検出回路４は制御信号端子５に接続されたリレー４
１と、このリレー４１でオン・オフ制御される接点４２
とを含んでいる。Referring to FIG. 1, in one embodiment of the present invention, the +5 volt signal in the RS-232C interface connecting the host system (not shown) and the modem 3 is used as the power control signal. Add to terminal 5. The power supply section of the modem 3 has a power supply 1 and a control signal detection circuit 4 on the primary side and a transformer 2 having the secondary side connected to the modem 3. The detection circuit 4 is a relay 4 connected to the control signal terminal 5.
1 and a contact 42 that is on / off controlled by this relay 41
Includes and.
【０００８】信号検出回路４は電源制御信号端子５に＋
５ボルト信号が供給されたことを検出すると、接点４２
をオンとして一次側の回路を閉じる。回路が閉じられる
とトランス２一次側に電源１の電流が流れ、二次側（出
力）に起電力が生じてモデム３に電源が入る。The signal detection circuit 4 is connected to the power supply control signal terminal 5 by +
Upon detecting that a 5 volt signal has been supplied, contact 42
Is turned on to close the circuit on the primary side. When the circuit is closed, the current of the power supply 1 flows to the primary side of the transformer 2 and an electromotive force is generated at the secondary side (output) to power on the modem 3.
【０００９】[0009]
【発明の効果】本発明のモデムの電源は制御信号検出回
路を付加することにより、ホスト・システムの電源のオ
ン・オフに連動してオン・オフされるので省力化できる
という効果がある。The power supply of the modem of the present invention is turned on / off in conjunction with the turning on / off of the power supply of the host system by adding the control signal detection circuit, so that there is an effect that the labor can be saved.
【図１】本発明の一実施例を示す概略回路図である。FIG. 1 is a schematic circuit diagram showing an embodiment of the present invention.
１ 電源 ２ トランス ３ モデム ４ 制御信号検出回路 ５ 電源制御信号端子 ４１ リレー ４２ 接点 1 power supply 2 transformer 3 modem 4 control signal detection circuit 5 power supply control signal terminal 41 relay 42 contact
Claims (1)
の制御信号を受けて前記電源部をオンとする信号検出回
路を設けたことを特徴とするモデムの電源装置。Claim: What is claimed is: 1. A power supply unit for a modem, comprising a signal detection circuit for turning on the power supply unit in response to a control signal from a host system in the power supply unit of the modem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3171490A JPH0519909A (en) | 1991-07-12 | 1991-07-12 | Power unit for modem |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3171490A JPH0519909A (en) | 1991-07-12 | 1991-07-12 | Power unit for modem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0519909A true JPH0519909A (en) | 1993-01-29 |
Family
ID=15924065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3171490A Pending JPH0519909A (en) | 1991-07-12 | 1991-07-12 | Power unit for modem |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0519909A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10005209B4 (en) * | 2000-02-05 | 2004-02-26 | Schön GmbH & Co. KG Industrietechnik | Data communications equipment |
-
1991
- 1991-07-12 JP JP3171490A patent/JPH0519909A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10005209B4 (en) * | 2000-02-05 | 2004-02-26 | Schön GmbH & Co. KG Industrietechnik | Data communications equipment |
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