JPH02202157A - Data line terminating set - Google Patents

Data line terminating set

Info

Publication number
JPH02202157A
JPH02202157A JP1019653A JP1965389A JPH02202157A JP H02202157 A JPH02202157 A JP H02202157A JP 1019653 A JP1019653 A JP 1019653A JP 1965389 A JP1965389 A JP 1965389A JP H02202157 A JPH02202157 A JP H02202157A
Authority
JP
Japan
Prior art keywords
data
power supply
data line
data terminal
terminal device
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
Application number
JP1019653A
Other languages
Japanese (ja)
Inventor
Kiyoshi Shibuya
清 渋谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP1019653A priority Critical patent/JPH02202157A/en
Publication of JPH02202157A publication Critical patent/JPH02202157A/en
Pending legal-status Critical Current

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  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Communication Control (AREA)

Abstract

PURPOSE:To form a data line terminating set with low power consumption by enabling a power source to be applied on the data line terminating set only when data terminal equipment is set at an operating state. CONSTITUTION:When neither the data terminal equipment 21a-21n is operated, all the transmission lines 22a-22n are set at high impedance, therefore, no current flows on a coil L1. Consequently, a switch S1 is turned off, and the supply of a driving power source to a main power source circuit 32 is cut off. Meanwhile, when either the data terminal equipment 21a-21n is switched to the operating state, either the transmission lines 22a-22n is set at an 'L' level by a ready signal, thereby, the current flows on the coil L1, and the switch S1 is turned on, then, the driving power source is supplied to the main power source circuit 32. In such a way, it is possible to apply the power source on the data line terminating set only when the data terminal equipment is set at the operating state, which attains the low power consumption.

Description

【発明の詳細な説明】 [発明の目的] (産業上の利用分野) この発明はデータ回線終端装置(dataelrcul
L terminating equipment ;
 D CE )に関する。
[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) This invention is a data line termination device.
L terminating equipment;
DCE).

(従来の技術) 一般に、データ伝送システムにおいては、データ回線と
データ端末装置間に変復調装置(MODEM)や宅内回
線終端装置(D S U)が設けられており、これら装
置によって端末装置とデータ伝送回線間のデータ伝送が
行われている。
(Prior Art) Generally, in a data transmission system, a modem device (MODEM) or a home line termination device (DSU) is provided between a data line and a data terminal device, and these devices allow data transmission between the terminal device and the data terminal device. Data is being transmitted between lines.

このような変復調装置や宅内回線終端装置はデータ回線
終端装置(DCE)と称されている。
Such a modulation/demodulation device and an in-home line terminating device are called a data line terminating device (DCE).

従来のデータ伝送システムの一例を第3図に示す。デー
タ端末装置11a−11nはデータ回線終端装置12を
介してデータ回線13に結合されており、またホストコ
ンピュータ15もデータ回線終端装置14を介してデー
タ回線13に結合されている。データ端末装置11a〜
llnとデータ回線13間のデータ伝送はデータ回線終
端装置12によって行われ、同様に、データ回線13と
ホストコンピュータ15間のデータ伝送はデータ回線終
端装置14によって行われる。
An example of a conventional data transmission system is shown in FIG. Data terminal equipment 11a-11n are coupled to data line 13 via data line termination 12, and host computer 15 is also coupled to data line 13 via data line termination 14. Data terminal device 11a~
Data transmission between the data line 13 and the data line 13 is performed by the data line termination device 12, and similarly, data transmission between the data line 13 and the host computer 15 is performed by the data line termination device 14.

このような構成のデータ伝送システムにおいては、デー
タ回線終端装置12.13は、各データ端末装置11a
〜lln、ホストコンピユータ15の動作状態に関係な
く、常に電源投入状態になっている。
In the data transmission system with such a configuration, the data line termination devices 12.13 are connected to each data terminal device 11a.
~lln, the power is always on regardless of the operating state of the host computer 15.

この理由は、各データ端末装置11a〜lln 、また
はホストコンピュータ15から伝送要求が何時送出され
ても、その伝送要求に応答できるようにするためである
。したがって、従来のデータ伝送システムにおいては、
データ回線終端装置は対応する端末が全て不稼働状態の
場合でさえも電源投入状態であり、これによって無駄な
電力がデータ回線終端装置で消費される欠点があった。
The reason for this is to be able to respond to transmission requests whenever they are sent from each of the data terminal devices 11a-lln or the host computer 15. Therefore, in conventional data transmission systems,
The data line terminating device remains powered on even when all the corresponding terminals are inactive, and this has the drawback of wasting power in the data line terminating device.

(発明が解決しようとする課題) この発明は前述の事情に鑑みなされたもので、従来では
データ回線終端装置において無駄な電力が消費された点
を改善し、データ端末装置が稼働状態の時だけデータ回
線終端装置に電源が投入されるようにして、低消費電力
を実現できるデータ回線終端装置を提供することを目的
とする。
(Problems to be Solved by the Invention) This invention was made in view of the above-mentioned circumstances, and it improves the point that conventional data line terminal devices waste power. It is an object of the present invention to provide a data line terminating device that can realize low power consumption by turning on the power to the data line terminating device.

[発明の構成] (課題を解決するための手段) この発明は、データ端末装置に所定の伝送線を介して接
続され、そのデータ端末装置とデータ回線間のデータ信
号の授受を行なうデータ回線終端装置において、内部回
路に駆動電源を供給するための主要電源回路と、前記伝
送線を介して供給される前記データ端末装置からのデー
タ信号の状態に応じて前記主要電源回路の駆動を制御す
る電源制御手段と、この電源制御手段に駆動電源を供給
する補助電源回路とを具備し、前記主要電源回路は、前
記データ端末装置が不稼働状態の時に前記電源制御手段
によってオフ状態に設定され、前記データ端末装置が稼
働状態の時に前記電源制御手段によってオン状態に設定
されることを特徴とする。
[Structure of the Invention] (Means for Solving the Problems) The present invention provides a data line termination that is connected to a data terminal device via a predetermined transmission line and that transmits and receives data signals between the data terminal device and the data line. In the device, a main power supply circuit for supplying driving power to an internal circuit, and a power supply for controlling driving of the main power supply circuit according to the state of a data signal from the data terminal device supplied via the transmission line. and an auxiliary power supply circuit for supplying driving power to the power supply control means, the main power supply circuit being set to an OFF state by the power supply control means when the data terminal device is in a non-operating state; It is characterized in that the data terminal device is set to the on state by the power control means when the data terminal device is in the operating state.

(作用) このデータ回線終端装置にあっては、電源制御手段によ
ってデータ端末装置の稼働状態が検出され、データ端末
装置が不稼働状態の時に主要電源回路はオフ状態、また
データ端末装置が稼働状態の時に主要電源回路がオン状
態に設定される。
(Function) In this data line termination device, the operating state of the data terminal device is detected by the power supply control means, and when the data terminal device is in an inactive state, the main power supply circuit is in an OFF state, and when the data terminal device is in an operating state. The main power supply circuit is set to the on state when .

このため、データ端末装置が稼働状態の時だけデータ回
線終端装置に電源を投入することができ、低消費電力の
データ回線終端装置が実現される。
Therefore, power can be applied to the data line termination device only when the data terminal device is in operation, and a data line termination device with low power consumption can be realized.

(実施例) 以下、図面を参照してこの発明の詳細な説明する。(Example) Hereinafter, the present invention will be described in detail with reference to the drawings.

第1図にこの発明の一実施例に係るデータ回線終端装置
(DCE)を示す。このデータ回線終端装置30は、伝
送線22a〜22nを介してデータ端末装置21a〜2
1nにそれぞれ接続されている。このデータ回線終端装
置30には、論理部31、主要電源回路32、電源制御
回路33、補助電源回路34が設けられている。論理部
31は、データ回線終端装置30のデータ伝送機能を実
行するするための主要内部回路であり、この論理部31
には伝送線22a〜22n1およびデータ回線40が結
合されている。
FIG. 1 shows a data line terminating equipment (DCE) according to an embodiment of the present invention. This data line termination device 30 connects the data terminal devices 21a to 21 through transmission lines 22a to 22n.
1n, respectively. This data line termination device 30 is provided with a logic section 31, a main power supply circuit 32, a power supply control circuit 33, and an auxiliary power supply circuit 34. The logic section 31 is a main internal circuit for executing the data transmission function of the data line termination device 30.
Transmission lines 22a to 22n1 and a data line 40 are coupled to.

主要電源回路32は外部から供給されるAC電源を所定
のDC電源に変換し、そのDC電源を論理部31にその
駆動電源として供給する。この主要電源回路32は、電
源制御回路33によって駆動制御される。電源制御回路
33は、各データ端末装置21a〜21nから送出され
る伝送線22a〜22n上の信号状態に応じて主要電源
回路32を駆動制御する。すなわち、電源制御回路33
は、伝送線22a〜22n上の信号状態によって各デー
タ端末装置21a〜22aの稼働状態を検出し、データ
端末装置21a〜21nが全て不稼働状態の時には主要
電源回路32をオフ状態に設定し、データ端末装置21
a〜21nの内で1つでも稼働状態の端末がある時には
主要電源回路32をオン状態に設定する。このような各
データ端末装置21a〜2inの稼働状態の検出は、例
えば、不稼働状態から稼働状態に切替る時に端末から送
出される“L“レベルのレディー信号ERを利用するこ
とができる。この電源制御回路は、補助電源回路34に
よってその駆動電源が供給される。
The main power supply circuit 32 converts AC power supplied from the outside into a predetermined DC power, and supplies the DC power to the logic section 31 as its drive power. This main power supply circuit 32 is driven and controlled by a power supply control circuit 33. The power supply control circuit 33 drives and controls the main power supply circuit 32 according to the signal state on the transmission lines 22a to 22n sent from each data terminal device 21a to 21n. That is, the power supply control circuit 33
detects the operating state of each data terminal device 21a to 22a based on the signal state on the transmission lines 22a to 22n, and sets the main power supply circuit 32 to an OFF state when all the data terminal devices 21a to 21n are in an inactive state, Data terminal device 21
When there is even one terminal in an operating state among a to 21n, the main power supply circuit 32 is set to an on state. The operating state of each data terminal device 21a to 2in can be detected using, for example, an "L" level ready signal ER sent from the terminal when switching from an inactive state to an operating state. This power supply control circuit is supplied with driving power by an auxiliary power supply circuit 34.

第2図に電源制御回路33の具体的な構成を示す。FIG. 2 shows a specific configuration of the power supply control circuit 33.

この電源制御回路33は、レベル変換用のインバータ5
1a〜51nと、リレードライブ用のインバータ52a
〜52nと、スイッチS1およびコイルLlを含むリレ
ーを備えている。データ端末装置 21a〜21nが全
て不稼働状態の時は、伝送線22a〜22nは全て高イ
ンピーダンス状態であるので、コイルL1には電流が流
れない。これにより、スイッチSlはオフとなって、主
要電源回路32への駆動電源の供給が遮断される。一方
、データ端末装置21a〜2b+のいずれかが不稼働状
態から稼働状態に切替わる時は、伝送線22a〜22n
のいずれかがレディー信号によって“L”レベルに設定
されるので、コイルL1に電流が流れる。これにより、
スイッチS1はオンとなって、主要電源回路32に駆動
電源が供給される。
This power supply control circuit 33 includes an inverter 5 for level conversion.
1a to 51n and an inverter 52a for relay drive
~52n, and a relay including a switch S1 and a coil Ll. When the data terminal devices 21a to 21n are all inactive, the transmission lines 22a to 22n are all in a high impedance state, so no current flows through the coil L1. As a result, the switch Sl is turned off, and the supply of drive power to the main power supply circuit 32 is cut off. On the other hand, when any of the data terminal devices 21a to 2b+ is switched from the non-operating state to the operating state, the transmission lines 22a to 22n
Since one of them is set to the "L" level by the ready signal, a current flows through the coil L1. This results in
The switch S1 is turned on, and driving power is supplied to the main power supply circuit 32.

このように、この発明のデータ回線終端装置では、電源
制御回路33によつてデータ端末装置の稼働状態が検出
され、データ端末装置が不稼働状態の時に主要電源回路
32はオフ状態、またデータ端末装置が稼働状態の時に
主要電源回路32がオン状態に設定される。このため、
データ端末装置が稼働状態の時だけデータ回線終端装置
に電源を投入することが可能になる。
As described above, in the data line termination device of the present invention, the operating state of the data terminal device is detected by the power supply control circuit 33, and when the data terminal device is in the non-operating state, the main power supply circuit 32 is in the off state, and the data terminal device is in the off state. When the device is in operation, the main power circuit 32 is set to the on state. For this reason,
Power can be applied to the data line termination device only when the data terminal device is in operation.

[発明の効果] 以上のように、この発明によれば、データ端末装置が稼
働状態の時だけデータ回線終端装置に電源を投入するこ
とが可能になるので、低消費電力のデータ回線終端装置
を提供できる。
[Effects of the Invention] As described above, according to the present invention, it is possible to turn on the power to the data line termination device only when the data terminal device is in the operating state, so it is possible to use a data line termination device with low power consumption. Can be provided.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの発明の一実施例に係るデータ回線終端装置
を示すブロック図、第2図は第1図に示したデータ回線
終端装置に設けられた電源制御回路の具体的な構成を示
す回路図、第3図は従来のデータ伝送システムを示すブ
ロック図である。 21a〜21n・・・データ端末装置、22a〜22n
・・・伝送線、30・・・データ回線終端装置、31・
・・論理部、32・−・主要電源回路。33・・・電源
制御回路、34・・・補助電源回路。
FIG. 1 is a block diagram showing a data line terminating device according to an embodiment of the present invention, and FIG. 2 is a circuit showing a specific configuration of a power supply control circuit provided in the data line terminating device shown in FIG. 3 are block diagrams showing a conventional data transmission system. 21a-21n...data terminal device, 22a-22n
...Transmission line, 30...Data line termination device, 31.
...Logic section, 32...Main power supply circuit. 33...Power supply control circuit, 34...Auxiliary power supply circuit.

Claims (1)

【特許請求の範囲】 データ端末装置に所定の伝送線を介して接続され、その
データ端末装置とデータ回線間のデータ信号の授受を行
なうデータ回線終端装置において、 内部回路に駆動電源を供給するための主要電源回路と、
前記伝送線を介して供給される前記データ端末装置から
のデータ信号の状態に応じて前記主要電源回路の駆動を
制御する電源制御手段と、この電源制御手段に駆動電源
を供給する補助電源回路とを具備し、 前記主要電源回路は、前記データ端末装置が不稼働状態
の時に前記電源制御手段によってオフ状態に設定され、
前記データ端末装置が稼働状態の時に前記電源制御手段
によってオン状態に設定されることを特徴とするデータ
回線終端装置。
[Scope of Claims] In a data line terminating device that is connected to a data terminal device via a predetermined transmission line and sends and receives data signals between the data terminal device and the data line, for supplying driving power to internal circuits. The main power circuit of
a power supply control means for controlling driving of the main power supply circuit according to a state of a data signal from the data terminal device supplied via the transmission line; and an auxiliary power supply circuit for supplying driving power to the power supply control means. The main power supply circuit is set to an off state by the power supply control means when the data terminal device is in an inactive state,
A data line terminating device characterized in that the data terminal device is set to an on state by the power supply control means when the data terminal device is in an operating state.
JP1019653A 1989-01-31 1989-01-31 Data line terminating set Pending JPH02202157A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1019653A JPH02202157A (en) 1989-01-31 1989-01-31 Data line terminating set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1019653A JPH02202157A (en) 1989-01-31 1989-01-31 Data line terminating set

Publications (1)

Publication Number Publication Date
JPH02202157A true JPH02202157A (en) 1990-08-10

Family

ID=12005208

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1019653A Pending JPH02202157A (en) 1989-01-31 1989-01-31 Data line terminating set

Country Status (1)

Country Link
JP (1) JPH02202157A (en)

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