JP2885472B2 - Digital transmission equipment - Google Patents
Digital transmission equipmentInfo
- Publication number
- JP2885472B2 JP2885472B2 JP2102459A JP10245990A JP2885472B2 JP 2885472 B2 JP2885472 B2 JP 2885472B2 JP 2102459 A JP2102459 A JP 2102459A JP 10245990 A JP10245990 A JP 10245990A JP 2885472 B2 JP2885472 B2 JP 2885472B2
- Authority
- JP
- Japan
- Prior art keywords
- conversion circuit
- output
- circuit unit
- terminal device
- transmission
- 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.)
- Expired - Fee Related
Links
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、局より定電流給電を受けて動作するディジ
タル伝送装置に関し、特に、端末装置に対して給電を行
っているディジタル伝送装置に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital transmission device that operates by receiving a constant current from a station, and more particularly to a digital transmission device that supplies power to a terminal device.
従来の技術 従来、この種のディジタル伝送装置は、試験時だけし
か使用しない折り返し回路部であっても、通常通信中に
使用する他の回路部と同様に、同一電源出力から常時給
電を行っていた。2. Description of the Related Art Conventionally, this type of digital transmission apparatus always supplies power from the same power supply output, even in a folded circuit unit used only during a test, similarly to other circuit units used during normal communication. Was.
発明が解決しようとする課題 従って、上述した従来のディジタル伝送装置は、折り
返し試験時にしか使用しない折り返し回路部で通常通信
中にも電力を消費してしまい、ディジタル伝送装置の消
費電力が大きくなってしまうという欠点があった。Therefore, the above-mentioned conventional digital transmission apparatus consumes power even during normal communication in the loopback circuit unit used only during the loopback test, and the power consumption of the digital transmission apparatus increases. There was a disadvantage that it would.
本発明は従来の上記実情に鑑みてなされたものであ
り、従って本発明の目的は、従来の技術に内在する上記
欠点を解消することを可能とした新規なディジタル伝送
装置を提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional circumstances, and accordingly, it is an object of the present invention to provide a novel digital transmission device capable of solving the above-mentioned disadvantages inherent in the conventional technology. .
課題を解決するための手段 上記目的を達成する為に、本発明によるディジタル伝
送装置は、折り返し回路部に対しての給電を端末装置に
対して行う給電出力側から取るように、折り返し制御信
号出力により端末装置への給電路を端末装置側から電圧
変換装置側に切り替えるスイッチ回路と、折り返し回路
部に電源を給電するための電圧変換回路とを備えて構成
される。Means for Solving the Problems In order to achieve the above object, a digital transmission device according to the present invention provides a return control signal output so that power is supplied to a return circuit unit from a power supply output side for a terminal device. And a switch circuit for switching a power supply path to the terminal device from the terminal device side to the voltage conversion device side, and a voltage conversion circuit for supplying power to the return circuit portion.
実施例 次に、本発明をその好ましい一実施例について図面を
参照して具体的に説明する。Next, a preferred embodiment of the present invention will be specifically described with reference to the drawings.
第１図は本発明の一実施例を示すブロック構成図であ
る。FIG. 1 is a block diagram showing an embodiment of the present invention.
第１図を参照するに、本発明の一実施例は、ディジタ
ル通信回線への接続点20、21を介して遠方給電を受け２
つの出力を出すDC−DC変換回路部９と、DC−DC変換回路
部９の第１の出力30から電源を受けて動作し、ディジタ
ル通信回線に対する信号の送受信を行う局側送信回路部
４及び局側受信回路部３と、端末装置に対する信号の送
受信を行う端末側送信回路部６及び端末側受信回路部７
と、前記送受信回路部３、４、６、７に対する入出力信
号の処理をする信号処理回路部５と、端末装置への送信
信号をディジタル通信回線側へ折り返す折り返し回路部
８を具備し、DC−DC変換回路部９の第２の出力31、32か
ら端末装置に対して給電を行っているディジタル伝送装
置において、DC−DC変換回路部９の第２の出力31、32の
給電路に挿入され、信号処理部５からの折り返し制御信
号出力33により給電路を端末装置側から電圧変換回路12
側に切り替えるスイッチ回路13、14と、折り返し回路部
８に電源を給電する前記電圧変換回路12を具備するディ
ジタル伝送装置である。Referring to FIG. 1, one embodiment of the present invention receives a remote power supply via connection points 20 and 21 to a digital communication line.
A DC-DC conversion circuit unit 9 that outputs two outputs; a station-side transmission circuit unit 4 that operates by receiving power from a first output 30 of the DC-DC conversion circuit unit 9 and transmits and receives signals to and from a digital communication line; Station-side receiving circuit section 3, terminal-side transmitting circuit section 6 for transmitting / receiving signals to / from a terminal device, and terminal-side receiving circuit section 7.
A signal processing circuit unit 5 for processing input / output signals to and from the transmission / reception circuit units 3, 4, 6, 7; and a return circuit unit 8 for returning a transmission signal to a terminal device to the digital communication line side. In a digital transmission device that supplies power to the terminal device from the second outputs 31 and 32 of the DC conversion circuit unit 9, the digital transmission device is inserted into the power supply line of the second outputs 31 and 32 of the DC-DC conversion circuit unit 9. The power supply path is switched from the terminal device side to the voltage conversion circuit 12 by the return control signal output 33 from the signal processing unit 5.
This is a digital transmission device including switch circuits 13 and 14 for switching to the side, and the voltage conversion circuit 12 for supplying power to the return circuit section 8.
このディジタル伝送装置では折り返し回路部８への給
電を端末装置への給電からとるようにしている。In this digital transmission device, power is supplied to the return circuit unit 8 from power supplied to the terminal device.
従って、折り返し試験中は端末装置への給電は行わな
い。また通常通信中は、電圧変換回路部12の入力はなく
なるので出力もなくなり、折り返し回路部８は動いてい
ない。端末装置側へ給電するか、電圧変換回路部12の入
力側へ給電するかは、折り返し制御出力信号33により行
っている。Therefore, power is not supplied to the terminal device during the loopback test. Also, during normal communication, there is no input to the voltage conversion circuit section 12 and thus no output, and the return circuit section 8 is not operating. Whether the power is supplied to the terminal device side or the input side of the voltage conversion circuit unit 12 is determined by the return control output signal 33.
又、折り返し制御情報は、ディジタル通信回線を介し
て局装置から送られてくる。The return control information is sent from the central station via a digital communication line.
発明の効果 以上説明したように、本発明は、折り返し回路部８へ
の給電を端末装置への給電電力を利用して行っている。Effect of the Invention As described above, in the present invention, power is supplied to the return circuit unit 8 using power supplied to the terminal device.
これにより本発明によれば、折り返し試験のために特
別な電力消費が発生していないので、折り返し試験機能
を有していても、ディジタル伝送装置の定消費電力化が
図れると言う効果が得られる。As a result, according to the present invention, no special power consumption occurs for the loopback test, so that even with the loopback test function, it is possible to obtain an effect that the power consumption of the digital transmission device can be reduced. .
第１図は本発明の一実施例を示すブロック構成図であ
る。 １……直流カット用コンデンサ、２……ハイブリットト
ランス、３……局側受信回路部、４……局側送信回路
部、５……信号処理回路部、６……端末側送信回路部、
７……端末側受信回路部、８……折り返し回路部、９…
…DC−DC変換回路部、10……ドライバ用トランス、11…
…レシーバ用トランス、12……電圧変換回路、13、14…
…スイッチ回路、20、21……局側ディジタル通信回線と
の接続点、22、23、24、25……端末装置との接続点、30
……DC−DC変換回路部第１の出力、31、32……DC−DC変
換回路部第２の出力、33……折り返し制御信号出力FIG. 1 is a block diagram showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1 ... DC cut capacitor, 2 ... Hybrid transformer, 3 ... Station side receiving circuit section, 4 ... Station side transmitting circuit section, 5 ... Signal processing circuit section, 6 ... Terminal side transmitting circuit section,
7 ... terminal side receiving circuit section, 8 ... folding circuit section, 9 ...
... DC-DC conversion circuit, 10 ... Transformer for driver, 11 ...
… Transformer for receiver, 12 …… Voltage conversion circuit, 13, 14…
... Switch circuits, 20, 21, ..., connection points with the station side digital communication line, 22, 23, 24, 25 ..., connection points with terminal devices, 30
... DC-DC conversion circuit section first output, 31, 32... DC-DC conversion circuit section second output, 33... Return control signal output
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) H04L 29/00 H04L 29/14 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 6 , DB name) H04L 29/00 H04L 29/14
Claims (1)
方給電を受け２つの出力を出すDC−DC変換回路部と、前
記DC−DC変換回路部の第１の出力から電源を受けて動作
し前記ディジタル通信回線に対する信号の送受信を行う
送受信回路部と、前記DC−DC変換回路部の第１の出力か
ら電源を受けて動作し端末装置に対する信号の送受信を
行う送受信回路部と、前記DC−DC変換回路部の第１の出
力から電源を受けて動作し前記送受信部に対する入出力
信号の処理をする信号処理回路部と、端末装置への送受
信信号を前記ディジタル通信回線側へ折り返す折り返し
回路部とを具備し、前記DC−DC変換回路部の第２の出力
から端末装置に対して給電を行っているディジタル伝送
装置において、前記DC−DC変換回路部の第２の出力の給
電路に挿入され前記信号処理回路部からの折り返し制御
信号出力により給電路を端末装置側から電圧変換回路側
に切り替えるスイッチ回路と、前記折り返し回路部に電
源を給電する前記電圧変換回路とを具備することを特徴
とするディジタル伝送装置。1. A DC-DC conversion circuit unit that receives a remote power supply via a connection point to a digital communication line and outputs two outputs, and operates by receiving power from a first output of the DC-DC conversion circuit unit. A transmission / reception circuit for transmitting / receiving signals to / from the digital communication line; a transmission / reception circuit for receiving power from a first output of the DC-DC conversion circuit and operating to transmit / receive signals to / from a terminal device; A signal processing circuit unit which operates by receiving power from the first output of the DC conversion circuit unit and processes input / output signals to / from the transmission / reception unit, and a return circuit for returning a transmission / reception signal to / from a terminal device to the digital communication line side A digital transmission device that supplies power to a terminal device from a second output of the DC-DC conversion circuit unit, and a power supply line of a second output of the DC-DC conversion circuit unit. Inserted signal processing A digital transmission, comprising: a switch circuit that switches a power supply path from a terminal device side to a voltage conversion circuit side by a return control signal output from a circuit unit; and the voltage conversion circuit that supplies power to the return circuit unit. apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2102459A JP2885472B2 (en) | 1990-04-18 | 1990-04-18 | Digital transmission equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2102459A JP2885472B2 (en) | 1990-04-18 | 1990-04-18 | Digital transmission equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04946A JPH04946A (en) | 1992-01-06 |
| JP2885472B2 true JP2885472B2 (en) | 1999-04-26 |
Family
ID=14328051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2102459A Expired - Fee Related JP2885472B2 (en) | 1990-04-18 | 1990-04-18 | Digital transmission equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2885472B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7248943B2 (en) | 2001-08-09 | 2007-07-24 | Honda Giken Kabushiki Kaisha | Method for judging communication state in a control system of linked joints |
-
1990
- 1990-04-18 JP JP2102459A patent/JP2885472B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04946A (en) | 1992-01-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |