JPH0771163B2 - Interphone - Google Patents
InterphoneInfo
- Publication number
- JPH0771163B2 JPH0771163B2 JP61097137A JP9713786A JPH0771163B2 JP H0771163 B2 JPH0771163 B2 JP H0771163B2 JP 61097137 A JP61097137 A JP 61097137A JP 9713786 A JP9713786 A JP 9713786A JP H0771163 B2 JPH0771163 B2 JP H0771163B2
- Authority
- JP
- Japan
- Prior art keywords
- communication line
- power
- call
- voltage
- line
- 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 - Lifetime
Links
Landscapes
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は構内の通話を行なうインターホンに関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intercom for making a telephone call on a premises.
従来の技術 従来より、一般にインターホンは親機と子機の組み合わ
せよりなり親機は子機の電源供給、及びシステム全体の
制御をし、子機は親機より電源の供給を受けて動作する
ことによりシステムを構成していた。Conventional technology Conventionally, an intercom generally consists of a combination of a master unit and a slave unit, the master unit supplies power to the slave unit and controls the entire system, and the slave unit operates by receiving power supply from the master unit. The system was configured by.
以下、図面を参照しながら、上述した様な従来のインタ
ーホンについて説明を行なう。Hereinafter, the conventional intercom as described above will be described with reference to the drawings.
第２図は従来のインターホンのブロック図を示すもので
ある。第２図に於て、１はシステムを動作させる為に通
話線路に電源を供給する為の電源回路、２は通話線路と
親機の間で送・受話信号の受渡をするインターフェイス
トランス、３は親機の送・受話増幅器、４は通話線路に
電源を供給する為の接続手段、５及び６は通話線路、７
は通話線路より電源供給を受ける為の電源受取回路、８
は子機の送・受話増幅器、９は通話線路と子機の間で送
・受話信号の受渡をするインターフェイストランスであ
る。FIG. 2 shows a block diagram of a conventional intercom. In FIG. 2, reference numeral 1 is a power supply circuit for supplying power to the communication line to operate the system, 2 is an interface transformer for transmitting / receiving a reception signal between the communication line and the master unit, and 3 is The transmitter / receiver amplifier of the master unit, 4 is connecting means for supplying power to the communication line, 5 and 6 are communication lines, 7
Is a power receiving circuit for receiving power from the communication line, 8
Is a transmitter / receiver amplifier of the slave unit, and 9 is an interface transformer for transmitting / receiving a transmitter / receiver signal between the communication line and the slave unit.
以上の様に構成されたインターホンについて、以下その
動作について説明する。The operation of the intercom configured as described above will be described below.
発明が解決しようとする問題点 しかしながら、上記の様な構成では、親機と子機はそれ
ぞれ構造が異なるため生産の時から販売に至るまでそれ
ぞれの区別が必要であり、生産から販売まですべて個別
管理が必要となる為コストアップとなる、又、親機を２
台以上通話線路へ接続した時に電源同士が干渉したり、
互の電源の極性を合わせておかないと電源間で短絡事故
が起こり、電源の焼損の恐れがあり危険であるという問
題点を有していた。Problems to be Solved by the Invention However, in the above-mentioned configuration, since the master unit and the slave unit have different structures, it is necessary to distinguish each unit from the time of production to the sale. The cost is increased because management is required, and the main unit is 2
When connecting more than one unit to the call line, the power sources interfere with each other,
If the polarities of the two power supplies are not matched, a short-circuit accident will occur between the power supplies, and there is a risk that the power supplies may be burnt out, which is dangerous.
本発明は上記従来技術に鑑みてなされたもので、通話線
路の電圧の有無を検出して、通話線路に電圧が存在する
場合すなわち既に他の装置が電源を供給している場合
は、自装置からの電源供給を行わない様にする事によ
り、同じ種類の装置を共通の通話線路に接続した場合に
於ても、互の電源間の短絡事故や電源間の干渉を生じる
恐れの無いインターホンを提供するものである。The present invention has been made in view of the above-mentioned prior art, and detects the presence or absence of a voltage on the communication line, and when the voltage exists on the communication line, that is, when another device is already supplying power, the device itself By not supplying power from the intercom, even when the same type of device is connected to a common communication line, an intercom that does not cause a short circuit accident between the power sources or interference between the power sources It is provided.
問題点を解決するための手段 この目的を達成する為に本発明のインターホンは、送受
話回路と、通話線路の所定の電圧の有無を検出する電圧
検出手段と、電力を供給するための電源手段と、通話線
路から電力を受けて送受話回路へ供給する電源受取手段
と、前記電圧検出手段が通話線路に所定の電圧が無い事
を検出した場合は電源手段を通話線路へ接続して通話線
路へ電力を供給し、電圧検出手段が通話線路に所定の電
圧が有る事を検知した場合は電源手段と通話線路間を断
つようにする制御手段とから構成されている。Means for Solving the Problems In order to achieve this object, the intercom of the present invention includes a transmitting / receiving circuit, a voltage detecting means for detecting the presence or absence of a predetermined voltage on a communication line, and a power source means for supplying electric power. And a power receiving means for receiving power from the call line and supplying it to the transmitting / receiving circuit, and connecting the power means to the call line when the voltage detecting means detects that there is no predetermined voltage on the call line. When the voltage detecting means detects that the communication line has a predetermined voltage, the power supply means and the control means for disconnecting the communication line from each other.
作用 この構成によって、通話線路に電圧が存在する場合は、
操作ボタンを操作しても通話線路へ電源を供給しない事
となる。Action With this configuration, if there is voltage on the call line,
Even if the operation button is operated, power will not be supplied to the communication line.
実施例 以下本発明の一実施例について、図面を参照しながら説
明する。Embodiment An embodiment of the present invention will be described below with reference to the drawings.
第１図は本発明の一実施例に於けるインターホンを示す
ものである。第１図に於て、１は通話線路に動作電流を
供給する為の電源回路、２は通話線路への電流をオン・
オフする為の制御手段入力端子を有するスイッチング手
段、３及び４は通話線路、６は通話線路３・４に電源が
供給されているか否かを検出する電圧検出手段、７はイ
ンターホンを使用する場合に操作される操作ボタン、５
は電圧検出手段６及び操作ボタン７を入力をし、出力が
スイッチング手段２の制御手段入力端子に接続された制
御手段、８は通話信号の送出及び受信を行う送・受話回
路、９は一次側が通話線路４と電源回路１の間に挿入さ
れ、二次側が送・受話回路８に接続された通話信号の受
渡を行うインターフェイストランスである。FIG. 1 shows an intercom according to an embodiment of the present invention. In FIG. 1, reference numeral 1 is a power supply circuit for supplying an operating current to the communication line, and 2 is an on-current for the communication line.
Switching means having control means input terminal for turning off, 3 and 4 are communication lines, 6 is voltage detection means for detecting whether or not power is supplied to the communication lines 3 and 4, and 7 is an intercom Operation buttons operated by 5
Is a control means for inputting the voltage detection means 6 and the operation button 7, and the output is connected to the control means input terminal of the switching means 2, 8 is a transmission / reception circuit for transmitting and receiving a call signal, and 9 is a primary side An interface transformer that is inserted between the call line 4 and the power supply circuit 1 and has a secondary side connected to the transmitter / receiver circuit 8 for delivering and receiving a call signal.
以上の様に構成されたインターホンについて、以下その
動作について説明する。The operation of the intercom configured as described above will be described below.
使用者が通話を開始しようとして操作ボタン７を押す
と、制御手段５は電圧検出手段６により、通話線路３・
４間の電圧を検出を行う。同じ通話線路に接続された他
の装置が通話中すなわち通話線路を使用中でなければ、
通話線路には電圧が存在していないので、電圧検出手段
６は「電圧無し」の情報を制御手段５へ伝達する。これ
に応答して制御手段５はスイッチング手段２をオン状態
にする。これにより、通話線路に電源が供給され、送・
受話回路８及びインターフェイストランス９によって他
の装置との間で通話が出来る。When the user pushes the operation button 7 to start a call, the control means 5 causes the voltage detecting means 6 to cause the call line 3
The voltage between 4 is detected. Unless another device connected to the same call line is busy or using the call line,
Since there is no voltage on the communication line, the voltage detecting means 6 transmits the information "no voltage" to the control means 5. In response to this, the control means 5 turns on the switching means 2. As a result, power is supplied to the call line,
The receiver circuit 8 and the interface transformer 9 allow communication with other devices.
又、同じ通話線路に接続された他の装置が通話中つまり
通話線路を使用中の場合、即ち既に他の装置間で通話
中、或は他の装置から呼び出されている場合は、通話線
路３・４間に電圧が存在する。使用者が通話を開始しよ
うとして操作ボタン７を押すと、制御手段５は電圧検出
手段６により、通話線路３・４間の電圧を検出を行う。
電圧検出手段６は「電圧有り」の情報を制御手段５へ伝
達する。これに応答して制御手段５はスイッチング手段
２のオフ状態を保持する。従って、電源手段は通話線路
３・４に接続されないが、他の装置から供給される電源
によって電源受取回路10を介して電源が供給され、送・
受話回路８及びインターフェイストランス９を介して通
話が出来る。If another device connected to the same call line is in a call, that is, if the call line is being used, that is, if a call is already being made between the other devices or is being called by another device, the call line 3・ Voltage exists between 4 When the user presses the operation button 7 to start a call, the control means 5 causes the voltage detection means 6 to detect the voltage between the call lines 3 and 4.
The voltage detection means 6 transmits the information “with voltage” to the control means 5. In response to this, the control means 5 holds the OFF state of the switching means 2. Therefore, the power supply means is not connected to the communication lines 3 and 4, but is supplied with power from the power supply from another device through the power supply receiving circuit 10 to send and receive.
A call can be made via the receiving circuit 8 and the interface transformer 9.
発明の効果 以上の様に本発明は、送受話回路と、通話線路の所定の
電圧の有無を検出する電圧検出手段と、電力を供給する
ための電源手段と、通話線路から電力を受けて送受話回
路へ供給する電源受取手段と、前記電圧検出手段が通話
線路に所定の電圧が無い事を検出した場合は電源手段を
通話線路へ接続して通話線路へ電力を供給し、電圧検出
手段が通話線路に所定の電圧が有る事を検知した場合は
電源手段と通話線路間を断つようにする制御手段とを備
えたことにより、通話線路の電圧の有無を検出して、通
話線路に電圧が存在する場合つまり既に他の装置が電源
を供給している場合は、自装置からの電源供給を行わな
い様にする事により、同じ種類の装置を共通の通話線路
に接続した場合に於ても、互の電源間の短絡事故や電源
間の干渉を生じる恐れが無くなり、又この事により親機
・子機の区別をする必要も無い。As described above, according to the present invention, the transmission / reception circuit, the voltage detection means for detecting the presence / absence of a predetermined voltage on the communication line, the power supply means for supplying the power, and the transmission by receiving the power from the communication line. When the voltage receiving means for supplying power to the receiving circuit and the voltage detecting means detect that there is no predetermined voltage on the communication line, the power supply means is connected to the communication line to supply power to the communication line, and the voltage detecting means When the presence of a predetermined voltage on the call line is provided with a power supply means and a control means for disconnecting the call line, the presence or absence of voltage on the call line is detected, and the voltage on the call line is detected. If it exists, that is, if another device is already supplying power, by not supplying power from the device itself, even when the same type of device is connected to a common communication line , A short circuit between the two power supplies or a There is no need to distinguish between the master unit and the slave unit because of the risk of communication.
第１図は本発明のインターホンの一実施例に於けるブロ
ック図、第２図は従来のインターホンのブロック図であ
る。 １……電源回路 ２……スイッチング手段 ３、４……通話線路 ６……電圧検出手段 ７……操作ボタン ５……制御手段 ８……送・受話回路 ９……インターフェイストランス 10……電源受取回路FIG. 1 is a block diagram of an intercom of the present invention, and FIG. 2 is a block diagram of a conventional intercom. 1 ... Power supply circuit 2 ... Switching means 3, 4 ... Call line 6 ... Voltage detection means 7 ... Operation button 5 ... Control means 8 ... Send / receive circuit 9 ... Interface transformer 10 ... Power reception circuit
Claims (2)
無を検出する電圧検出手段と、電力を供給するための電
源手段と、前記通話線路から電力を受けて前記送受話回
路へ供給する電源受取手段とを備え、 前記電圧検出手段が前記通話線路に所定の電圧が無い事
を検出した場合は前記電源手段を前記通話線路へ接続し
て前記通話線路へ電力を供給し、前記電圧検出手段が前
記通話線路に所定の電圧が有る事を検知した場合は前記
電源手段と前記通話線路との接続を断つように制御する
制御手段とを備えた事を特徴とするインターホン。1. A transmission / reception circuit, voltage detection means for detecting the presence or absence of a predetermined voltage on a communication line, power supply means for supplying electric power, and electric power supplied from the communication line to the transmission / reception circuit. Power source receiving means for supplying power to the call line by connecting the power source means to the call line when the voltage detecting means detects that the call line does not have a predetermined voltage. An intercom, characterized in that when the detection means detects that a predetermined voltage is present on the communication line, the intercom is provided with control means for controlling so as to disconnect the power supply means and the communication line.
備え、制御手段は、電圧検出手段が通話線路に所定の電
圧が無い事を検出した場合は前記操作手段の操作に応答
して前記電源手段を前記通話線路へ接続するように制御
することを特徴とする特許請求の範囲第１項に記載のイ
ンターホン。2. An operation means operated to start a call, wherein the control means responds to the operation of the operation means when the voltage detection means detects that the communication line does not have a predetermined voltage. The intercom according to claim 1, wherein a power supply unit is controlled so as to be connected to the communication line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61097137A JPH0771163B2 (en) | 1986-04-25 | 1986-04-25 | Interphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61097137A JPH0771163B2 (en) | 1986-04-25 | 1986-04-25 | Interphone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62253259A JPS62253259A (en) | 1987-11-05 |
| JPH0771163B2 true JPH0771163B2 (en) | 1995-07-31 |
Family
ID=14184181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61097137A Expired - Lifetime JPH0771163B2 (en) | 1986-04-25 | 1986-04-25 | Interphone |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0771163B2 (en) |
-
1986
- 1986-04-25 JP JP61097137A patent/JPH0771163B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62253259A (en) | 1987-11-05 |
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