JP2003218752A - Bridge device for power line communication - Google Patents
Bridge device for power line communicationInfo
- Publication number
- JP2003218752A JP2003218752A JP2002009481A JP2002009481A JP2003218752A JP 2003218752 A JP2003218752 A JP 2003218752A JP 2002009481 A JP2002009481 A JP 2002009481A JP 2002009481 A JP2002009481 A JP 2002009481A JP 2003218752 A JP2003218752 A JP 2003218752A
- Authority
- JP
- Japan
- Prior art keywords
- bridge device
- power line
- capacitor
- phases
- absorbing element
- 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.)
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- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
(57)【要約】
【課題】雷サージ等のノイズを吸収して通信の信頼性を
向上し、アース端子を備えていない機器も確実に保護
し、分電盤に簡単に取り付けることができる電力線搬送
通信のブリッジ装置を提供する。
【解決手段】ブリッジ装置１は、Ｘ，Ｎ，Ｙ相の各相に
接続するための接続端子２，３，４と、アース線５を接
続するためのアース端子６とを備え、Ｘ−Ｙ相間に異相
間の電力線搬送通信を可能にするコンデンサ７と、コン
デンサ７の保護とノイズ対策用の第１サージ吸収素子８
とを並列に接続し、各相の接続端子２，３，４とアース
端子６間にノイズ対策用の第２サージ吸収素子９，１
０，１１を接続している。ブリッジ装置１の幅寸法は分
岐ブレーカ２個分の幅寸法と略同一に形成され、分電盤
１４に隣り合って設置された２個の分岐ブレーカ１９，
１９と置き換えて設置することができる。
(57) [Abstract] [Problem] A power line that absorbs noise such as lightning surges, improves communication reliability, reliably protects equipment without a ground terminal, and can be easily attached to a distribution board. A bridge device for carrier communication is provided. A bridge device (1) includes connection terminals (2, 3, 4) for connecting to X, N, and Y phases, and a ground terminal (6) for connecting a ground wire (5). Capacitor 7 enabling power line carrier communication between phases, and first surge absorbing element 8 for protection of capacitor 7 and noise suppression
Are connected in parallel, and a second surge absorbing element 9, 1 for noise suppression is connected between the connection terminals 2, 3, 4 of each phase and the ground terminal 6.
0 and 11 are connected. The width of the bridge device 1 is formed to be substantially the same as the width of two branch breakers, and the two branch breakers 19, which are installed adjacent to the distribution board 14.
19 and can be installed.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電力線にデータ信
号を重畳して通信を行う電力線搬送システムで異相間の
通信を行うためのブリッジ装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bridge device for carrying out communication between different phases in a power line carrier system for carrying out communication by superimposing a data signal on a power line.
【０００２】[0002]
【従来の技術】電力線にデータ信号を重畳して通信を行
う電力線搬送通信で、一般に通信装置は単相３線式電路
のＸ−Ｎ相又はＹ−Ｎ相に接続されるため、通信装置が
接続された相は通信が可能であるが、Ｘ−Ｙ相間は通信
することができない。異相間の通信を行う場合は、図５
に示すように分電盤３１に配設された分岐ブレーカ３２
のうち、Ｘ−Ｎ相に接続された分岐ブレーカ３２とＹ−
Ｎ相に接続された分岐ブレーカ３２の夫々の二次側から
Ｘ相とＹ相にリード線３３，３４を接続してブリッジ装
置３５であるコンデンサ３６を接続していた。コンデン
サ３６は高周波を通過させるので高周波であるデータ信
号を通過させ通信を行うことができる。ブリッジ装置３
５は分電盤３１内の空きスペースに直付けしていた。2. Description of the Related Art In power line carrier communication in which a data signal is superimposed on a power line for communication, generally, the communication device is connected to the X-N phase or the Y-N phase of a single-phase three-wire type electric circuit. The connected phases can communicate, but cannot communicate between the XY phases. When performing communication between different phases, refer to FIG.
Branch breaker 32 disposed on distribution board 31 as shown in FIG.
Of the branch breaker 32 connected to the X-N phase and Y-
The lead wires 33 and 34 are connected to the X phase and the Y phase from the respective secondary sides of the branch breakers 32 connected to the N phase, and the capacitor 36 that is the bridge device 35 is connected thereto. Since the capacitor 36 passes a high frequency, a data signal having a high frequency can be passed for communication. Bridge device 3
No. 5 was directly attached to an empty space in the distribution board 31.
【０００３】また、Ｘ−Ｙ相の２００Ｖに接続される例
えばエアコン等の負荷機器に内蔵されたコンデンサをブ
リッジ装置として利用し通信を行っていた。Further, a capacitor built in a load device such as an air conditioner connected to 200V of XY phase is used as a bridge device for communication.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、ブリッ
ジ装置３５を分電盤３１内の空きスペースに直付けする
には、分電盤３１を加工しなければならないし、分岐ブ
レーカ３２にリード線３３，３４を接続する際に負荷機
器に接続された電線３７と共締めしなければならず、非
常に手間がかかっていた。また、分電盤３１には空きス
ペースがほとんどないため、設置場所の確保が困難であ
った。また、従来のブリッジ装置３５は雷サージ等のノ
イズ対策が施されておらず、各負荷機器でノイズ対策を
行っているが、大抵の負荷機器はアース端子を備えてい
たないため、ノイズ対策が十分ではなかった。また、２
００Ｖの負荷機器でコンデンサが備えられていない場合
はブリッジ装置として利用することができなかった。However, in order to directly attach the bridge device 35 to the empty space in the distribution board 31, the distribution board 31 must be processed, and the branch breaker 32 is provided with the lead wires 33 ,. When connecting 34, it has to be tightened together with the electric wire 37 connected to the load device, which is very troublesome. Further, since the distribution board 31 has almost no empty space, it is difficult to secure the installation place. In addition, the conventional bridge device 35 does not take measures against noise such as lightning surge, and each load device takes measures against noise. However, most load devices do not have a ground terminal. It wasn't enough. Also, 2
If the load device of 00V is not equipped with a capacitor, it cannot be used as a bridge device.
【０００５】そこで上記問題点に鑑み、本発明の目的
は、雷サージ等のノイズを吸収して通信の信頼性を向上
し、アース端子を備えていない機器も確実に保護し、分
電盤に簡単に取り付けることができる電力線搬送通信の
ブリッジ装置を提供することである。Therefore, in view of the above problems, an object of the present invention is to absorb noise such as lightning surge to improve communication reliability, to reliably protect equipment without a ground terminal, and to provide a distribution board. An object of the present invention is to provide a bridge device for power line carrier communication that can be easily attached.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に、請求項１に記載の発明によれば、電力線にデータ信
号を重畳して通信を行う電力線搬送通信で単相３線式電
路の異相間の通信を行うためのブリッジ装置において、
Ｘ，Ｎ，Ｙ相の各相に接続するための接続端子と、アー
ス線を接続するためのアース端子とを備え、Ｘ−Ｙ相間
にコンデンサと第１サージ吸収素子を並列に接続し、各
相の接続端子とアース端子間に第２サージ吸収素子を接
続したことを特徴とする。In order to achieve the above object, according to the invention as set forth in claim 1, a power line carrier communication for superimposing a data signal on a power line for communication is performed. In the bridge device for communicating between different phases,
A connection terminal for connecting to each of the X, N, and Y phases and a ground terminal for connecting to a ground wire are provided, and a capacitor and a first surge absorbing element are connected in parallel between the XY phases. A second surge absorbing element is connected between the phase connection terminal and the ground terminal.
【０００７】請求項２に記載の発明によれば、請求項１
に記載の電力線搬送通信のブリッジ装置において、コン
デンサ及び第１サージ吸収素子と直列にヒューズを接続
するとともに、コンデンサ及び第１サージ吸収素子と並
列に表示装置を接続したことを特徴とする。According to the invention described in claim 2, claim 1
In the power line carrier communication bridge device described in (1), a fuse is connected in series with the capacitor and the first surge absorbing element, and a display device is connected in parallel with the capacitor and the first surge absorbing element.
【０００８】請求項３に記載の発明によれば、請求項１
又は請求項２に記載の電力線搬送通信のブリッジ装置に
おいて、ブリッジ装置の幅寸法は分電盤に設置される分
岐ブレーカ２個分の幅寸法と略同一であり、分電盤に隣
り合って設置された２個の分岐ブレーカと置き換えて設
置可能であることを特徴とする。According to the invention of claim 3, claim 1
Alternatively, in the bridge device for power line carrier communication according to claim 2, the width dimension of the bridge device is substantially the same as the width dimension of two branch breakers installed in the distribution board, and the bridge device is installed adjacent to the distribution board. It is characterized in that it can be installed in place of the two branch breakers described above.
【０００９】[0009]
【発明の実施の形態】請求項１に記載の発明によれば、
電力線にデータ信号を重畳して通信を行う電力線搬送通
信で単相３線式電路の異相間の通信を行うためのブリッ
ジ装置において、Ｘ，Ｎ，Ｙ相の各相に接続するための
接続端子と、アース線を接続するためのアース端子とを
備え、Ｘ−Ｙ相間にコンデンサと第１サージ吸収素子を
並列に接続し、各相の接続端子とアース端子間に第２サ
ージ吸収素子を接続したことにより、雷サージ等のノイ
ズを吸収して通信の信頼性を向上し、アース端子を備え
ていない電力線搬送機器も確実に保護することができ
る。DETAILED DESCRIPTION OF THE INVENTION According to the invention described in claim 1,
A connection terminal for connecting to each phase of X, N, and Y phases in a bridge device for performing communication between different phases of a single-phase three-wire circuit in power line carrier communication in which a data signal is superimposed on a power line for communication And a ground terminal for connecting a ground wire, the capacitor and the first surge absorbing element are connected in parallel between the X and Y phases, and the second surge absorbing element is connected between the connection terminal of each phase and the ground terminal. By doing so, it is possible to absorb noise such as lightning surge, improve communication reliability, and reliably protect power line carrier equipment that is not provided with a ground terminal.
【００１０】請求項２に記載の発明によれば、請求項１
に記載の電力線搬送通信のブリッジ装置において、コン
デンサ及び第１サージ吸収素子と直列にヒューズを接続
するとともに、コンデンサ及び第１サージ吸収素子と並
列に表示装置を接続したことにより、コンデンサ又は第
１サージ吸収素子の故障を発見することができる。According to the invention of claim 2, claim 1
In the bridge device for power line carrier communication according to [1], by connecting a fuse in series with the capacitor and the first surge absorbing element, and connecting a display device in parallel with the capacitor and the first surge absorbing element, the capacitor or the first surge is provided. The failure of the absorption element can be found.
【００１１】請求項３に記載の発明によれば、請求項１
又は請求項２に記載の電力線搬送通信のブリッジ装置に
おいて、ブリッジ装置の幅寸法は分電盤に設置される分
岐ブレーカ２個分の幅寸法と略同一であり、分電盤に隣
り合って設置された２個の分岐ブレーカと置き換えて設
置可能であることにより、分電盤に簡単に取り付けるこ
とができる。According to the invention of claim 3, claim 1
Alternatively, in the bridge device for power line carrier communication according to claim 2, the width dimension of the bridge device is substantially the same as the width dimension of two branch breakers installed in the distribution board, and the bridge device is installed adjacent to the distribution board. Since it can be installed by replacing the two branch breakers described above, it can be easily attached to the distribution board.
【００１２】[0012]
【実施例】本発明に係る電力線搬送通信のブリッジ装置
の一実施例を図１〜図３の添付図面に基づいて説明す
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a bridge device for power line carrier communication according to the present invention will be described with reference to the accompanying drawings of FIGS.
【００１３】単相３線式電路で電力線搬送通信を行うた
めの通信装置はＸ−Ｎ相又はＹ−Ｎ相に接続され、通信
装置が接続された相間は通信を行うことができる。通信
装置が接続されない異相間で電力線搬送通信を行うため
にはブリッジ装置１が用いられる。A communication device for performing power line carrier communication on a single-phase three-wire type electric circuit is connected to the X-N phase or the Y-N phase, and communication can be performed between the phases to which the communication device is connected. The bridge device 1 is used to perform power line carrier communication between different phases to which no communication device is connected.
【００１４】ブリッジ装置１は、Ｘ，Ｎ，Ｙ相の各相に
接続するための接続端子２，３，４と、アース線５を接
続するためのアース端子６とを備え、Ｘ−Ｙ相間にコン
デンサ７と第１サージ吸収素子８を並列に接続し、各相
の接続端子２，３，４とアース端子６間に第２サージ吸
収素子９，１０，１１を接続している。The bridge device 1 is provided with connection terminals 2, 3 and 4 for connecting to each of the X, N and Y phases, and a ground terminal 6 for connecting to the ground wire 5, and is provided between the X and Y phases. The capacitor 7 and the first surge absorbing element 8 are connected in parallel with each other, and the second surge absorbing elements 9, 10, 11 are connected between the connection terminals 2, 3, 4 of each phase and the ground terminal 6.
【００１５】また、コンデンサ７及び第１サージ吸収素
子８と直列にヒューズ１２を接続し、コンデンサ７及び
第１サージ吸収素子８と並列に例えばパイロットランプ
１３等の表示装置を接続している。A fuse 12 is connected in series with the capacitor 7 and the first surge absorbing element 8, and a display device such as a pilot lamp 13 is connected in parallel with the capacitor 7 and the first surge absorbing element 8.
【００１６】ブリッジ装置１が設置される分電盤１４は
主幹ブレーカ１５の二次側にＸ，Ｎ，Ｙ相の主幹バー１
６，１７，１８が接続され、主幹バー１６，１７，１８
を挟んで両側に分岐ブレーカ１９が配置され、３本の主
幹バー１６，１７，１８のうち２本から分岐バー２０，
２０により分岐ブレーカ１９に接続されている。The distribution board 14 on which the bridge device 1 is installed has an X, N, Y-phase main bar 1 on the secondary side of the main breaker 15.
6, 17, 18 are connected to the main bar 16, 17, 18
The branch breakers 19 are arranged on both sides of the branch bar 19, and two of the three main bars 16, 17, 18 are connected to the branch bar 20,
It is connected to the branch breaker 19 by 20.
【００１７】ブリッジ装置１は、分岐ブレーカ２個分の
幅寸法と略同一に形成され、接続端子２，３，４は分岐
ブレーカ２の一次側端子と同一箇所に形成されている。
分電盤１４に隣り合って設置された２個の分岐ブレーカ
１９，１９と置き換えて設置することができる。こうし
て設置されたブリッジ装置１は、Ｘ，Ｎ，Ｙ相の各主幹
バー１６，１７，１８から分岐バー２０，２０，２０に
よって接続端子２，３，４に接続される。また、アース
端子６にアース線５が接続される。The bridge device 1 is formed to have substantially the same width dimension as that of two branch breakers, and the connection terminals 2, 3 and 4 are formed at the same positions as the primary terminals of the branch breaker 2.
It can be installed by replacing the two branch breakers 19, 19 installed adjacent to the distribution board 14. The bridge device 1 thus installed is connected to the connection terminals 2, 3, 4 from the main bars 16, 17, 18 of the X, N, Y phases by the branch bars 20, 20, 20. Further, the ground wire 5 is connected to the ground terminal 6.
【００１８】ブリッジ装置１の各部の動作について説明
する。まず、コンデンサ７は高周波を通過させるため、
Ｘ−Ｙ相間に高周波のデータ信号を通過させ、異相間の
通信を可能にする役割を果たしている。また、第１サー
ジ吸収素子８はＸ−Ｙ相間に流れてくる雷サージ等のノ
イズを吸収すると共に、コンデンサ７を雷サージから保
護する役割を果たしている。The operation of each part of the bridge device 1 will be described. First, since the capacitor 7 allows high frequencies to pass,
A high-frequency data signal is passed between the X and Y phases to play a role in enabling communication between different phases. Further, the first surge absorbing element 8 plays a role of absorbing noise such as lightning surge flowing between the X and Y phases and protecting the capacitor 7 from lightning surge.
【００１９】また、第２サージ吸収素子９，１０，１１
は各相に流れてくる雷サージ等のノイズを吸収し、負荷
機器を保護する役割を果たしている。In addition, the second surge absorbing elements 9, 10, 11
Absorbs noise such as lightning surge flowing in each phase and plays a role of protecting load equipment.
【００２０】パイロットランプ１３は通常、点灯してブ
リッジ装置１が正常に動作していることを表示し、コン
デンサ７又は第１サージ吸収素子８が故障した際にヒュ
ーズ１２が切れてパイロットランプ１３が消灯し、ブリ
ッジ装置１の故障を知らせる役割を果たしている。The pilot lamp 13 normally lights up to indicate that the bridge device 1 is operating normally, and when the capacitor 7 or the first surge absorbing element 8 fails, the fuse 12 is blown and the pilot lamp 13 is turned on. It is turned off and plays a role of notifying the failure of the bridge device 1.
【００２１】尚、図４に示すようにブリッジ装置のＸ−
Ｎ相間とＹ−Ｎ相間に流れる雷サージを吸収させるため
にサージ吸収素子２１，２２を接続しても良い。このと
き、サージ吸収素子２１，２２の故障に備えて各相にヒ
ューズ２３，２４，２５を接続する。As shown in FIG. 4, the bridge device X-
Surge absorbing elements 21 and 22 may be connected to absorb a lightning surge flowing between the N phases and between the Y and N phases. At this time, fuses 23, 24, 25 are connected to each phase in preparation for a failure of the surge absorbing elements 21, 22.
【００２２】[0022]
【発明の効果】以上説明したように請求項１に記載の発
明によれば、電力線にデータ信号を重畳して通信を行う
電力線搬送通信で単相３線式電路の異相間の通信を行う
ためのブリッジ装置において、Ｘ，Ｎ，Ｙ相の各相に接
続するための接続端子と、アース線を接続するためのア
ース端子とを備え、Ｘ−Ｙ相間にコンデンサと第１サー
ジ吸収素子を並列に接続し、各相の接続端子とアース端
子間に第２サージ吸収素子を接続したことにより、雷サ
ージ等のノイズを吸収して通信の信頼性を向上し、アー
ス端子を備えていない機器も確実に保護することができ
るという効果がある。As described above, according to the first aspect of the present invention, in order to perform communication between different phases of a single-phase three-wire electric circuit in power line carrier communication in which a data signal is superimposed on a power line for communication. Of the bridge device, the connection terminal for connecting to each of the X, N, and Y phases and the ground terminal for connecting the ground wire are provided, and the capacitor and the first surge absorbing element are connected in parallel between the XY phases. By connecting the second surge absorbing element between the connection terminal of each phase and the ground terminal, it is possible to absorb noise such as lightning surge and improve the reliability of communication, and for equipment that does not have a ground terminal. There is an effect that it can be surely protected.
【００２３】請求項２に記載の発明によれば、請求項１
に記載の電力線搬送通信のブリッジ装置において、コン
デンサ及び第１サージ吸収素子と直列にヒューズを接続
するとともに、コンデンサ及び第１サージ吸収素子と並
列に表示装置を接続したことにより、コンデンサ又は第
１サージ吸収素子の故障を発見することができるという
効果がある。According to the invention of claim 2, claim 1
In the bridge device for power line carrier communication according to [1], a fuse is connected in series with the capacitor and the first surge absorbing element, and a display device is connected in parallel with the capacitor and the first surge absorbing element, so that the capacitor or the first surge is provided. There is an effect that a failure of the absorption element can be found.
【００２４】請求項３に記載の発明によれば、請求項１
又は請求項２に記載の電力線搬送通信のブリッジ装置に
おいて、ブリッジ装置の幅寸法は分電盤に設置される分
岐ブレーカ２個分の幅寸法と略同一であり、分電盤に隣
り合って設置された２個の分岐ブレーカと置き換えて設
置可能であることにより、分電盤に簡単に取り付けるこ
とができるという効果がある。According to the invention of claim 3, claim 1
Alternatively, in the bridge device for power line carrier communication according to claim 2, the width dimension of the bridge device is substantially the same as the width dimension of two branch breakers installed in the distribution board, and the bridge device is installed adjacent to the distribution board. Since it can be installed by replacing the two branch breakers described above, there is an effect that it can be easily attached to the distribution board.
【図１】本発明に係るブリッジ装置の回路図である。FIG. 1 is a circuit diagram of a bridge device according to the present invention.
【図２】本発明に係るブリッジ装置の外観図であり、
（ａ）は正面図、（ｂ）は右側面図、（ｃ）は底面図で
ある。FIG. 2 is an external view of a bridge device according to the present invention,
(A) is a front view, (b) is a right side view, and (c) is a bottom view.
【図３】本発明に係るブリッジ装置を設置した分電盤を
示す説明図である。FIG. 3 is an explanatory diagram showing a distribution board on which a bridge device according to the present invention is installed.
【図４】本発明に係るブリッジ装置の変形実施例を示す
回路図である。FIG. 4 is a circuit diagram showing a modified embodiment of the bridge device according to the present invention.
【図５】従来のブリッジ装置を設置した分電盤を示す説
明図である。FIG. 5 is an explanatory view showing a distribution board on which a conventional bridge device is installed.
１…ブリッジ装置 ２〜４…接続端子 ６…アース端子 ７…コンデンサ ８…第１サージ吸収素子 ９〜１１…第２サージ吸収素子 １２…ヒューズ １３…パイロットランプ ２０…分岐バー 1 ... Bridge device 2-4 ... Connection terminals 6 ... Ground terminal 7 ... Capacitor 8 ... First surge absorber 9-11 ... Second surge absorbing element 12 ... Fuse 13 ... Pilot lamp 20 ... Branch bar
Claims (3)
う電力線搬送通信で単相３線式電路の異相間の通信を行
うためのブリッジ装置において、Ｘ，Ｎ，Ｙ相の各相に
接続するための接続端子と、アース線を接続するための
アース端子とを備え、Ｘ−Ｙ相間にコンデンサと第１サ
ージ吸収素子を並列に接続し、前記各相の接続端子と前
記アース端子間に第２サージ吸収素子を接続したことを
特徴とする電力線搬送通信のブリッジ装置。1. A bridge device for performing communication between different phases of a single-phase three-wire type electric circuit in a power line carrier communication in which a data signal is superimposed on a power line for communication, and is connected to each phase of X, N, and Y phases. And a ground terminal for connecting a ground wire, the capacitor and the first surge absorbing element are connected in parallel between the XY phases, and the connection terminal for each phase and the ground terminal are connected. A bridge device for power line carrier communication, characterized in that a second surge absorbing element is connected.
と直列にヒューズを接続するとともに、前記コンデンサ
及び第１サージ吸収素子と並列に表示装置を接続したこ
とを特徴とする請求項１に記載の電力線搬送通信のブリ
ッジ装置。2. The power line according to claim 1, wherein a fuse is connected in series with the capacitor and the first surge absorbing element, and a display device is connected in parallel with the capacitor and the first surge absorbing element. Bridge device for carrier communication.
置される分岐ブレーカ２個分の幅寸法と略同一であり、
分電盤に隣り合って設置された２個の分岐ブレーカと置
き換えて設置可能であることを特徴とする請求項１又は
請求項２に記載の電力線搬送通信のブリッジ装置。3. The width dimension of the bridge device is substantially the same as the width dimension of two branch breakers installed on a distribution board,
The bridge device for power line carrier communication according to claim 1 or 2, which can be installed by replacing two branch breakers installed adjacent to the distribution board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002009481A JP2003218752A (en) | 2002-01-18 | 2002-01-18 | Bridge device for power line communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002009481A JP2003218752A (en) | 2002-01-18 | 2002-01-18 | Bridge device for power line communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003218752A true JP2003218752A (en) | 2003-07-31 |
Family
ID=27647481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002009481A Pending JP2003218752A (en) | 2002-01-18 | 2002-01-18 | Bridge device for power line communication |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003218752A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009124611A (en) * | 2007-11-16 | 2009-06-04 | Rohm Co Ltd | Electric equipment and electric power line communication system |
| US12370094B2 (en) | 2020-03-26 | 2025-07-29 | Daio Paper Corporation | Connecting-type disposable wearing article |
-
2002
- 2002-01-18 JP JP2002009481A patent/JP2003218752A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009124611A (en) * | 2007-11-16 | 2009-06-04 | Rohm Co Ltd | Electric equipment and electric power line communication system |
| US12370094B2 (en) | 2020-03-26 | 2025-07-29 | Daio Paper Corporation | Connecting-type disposable wearing article |
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