JPH11225217A - Remote supervisory system - Google Patents

Remote supervisory system

Info

Publication number
JPH11225217A
JPH11225217A JP10063816A JP6381698A JPH11225217A JP H11225217 A JPH11225217 A JP H11225217A JP 10063816 A JP10063816 A JP 10063816A JP 6381698 A JP6381698 A JP 6381698A JP H11225217 A JPH11225217 A JP H11225217A
Authority
JP
Japan
Prior art keywords
isdn
store
compatible
videophone
phs
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
JP10063816A
Other languages
Japanese (ja)
Inventor
Masao Kumagai
征男 熊谷
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.)
RITAA KK
Original Assignee
RITAA KK
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 RITAA KK filed Critical RITAA KK
Priority to JP10063816A priority Critical patent/JPH11225217A/en
Publication of JPH11225217A publication Critical patent/JPH11225217A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To greatly reduce the cost of a remote supervisory system by using a television telephone dealing with ISDN, performing image transmission between a store and a user's house and supervising by a large screen monitor connected to the television telephone. SOLUTION: An external monitoring camera 3 installed at a store 1 photographs, e.g. around a register in the daytime and photographs around the entrance at night. A detector 4 installed at the store 1 sends an alarm signal to the correspondence television telephone 2 dealing with ISDN when a person approaches near the entrance at right. The telephone 2 is automatically notified to an ISDN correspondence television telephone 8 that is installed at his house or a headquarter 7 via a ISDN line 10 and the telephone 8 is automatically started together with alarm display. As a result, his house or the headquarter 7 side immediately finds that an abnormal state occurs, makes an appropriate decision from an image and voice, can quickly communicate to the police, differs from a simple detector and has no risk of making a false report.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】この発明は、遠隔監視システムに
関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote monitoring system.

【0002】[0002]

【従来の技術】従来、この種の遠隔監視システムではI
SDN回線に接続するためには専用のデジタルコーデッ
ク叉はモニタリングコーデック叉はカラー画像伝送装置
により行われていた。
2. Description of the Related Art Conventionally, this kind of remote monitoring system has
In order to connect to the SDN line, a dedicated digital codec, monitoring codec, or color image transmission device has been used.

【0003】[0003]

【発明が解決しようとする課題】この従来のデジタルコ
ーデック叉はモニタリングコーデック叉はカラー画像伝
送装置は専用機器なので生産台数が少なく送信側受信側
合計で180万円前後と高価であるという欠点があっ
た。その結果最小構成でもシステム全体の価格は216
万円にもなり小規模な小売り店では導入が不可能であっ
た。
Since the conventional digital codec, monitoring codec, or color image transmission device is a dedicated device, there is a drawback that the number of production units is small and the total cost on the transmitting and receiving sides is about 1.8 million yen. Was. As a result, the price of the entire system is 216 even with the minimum configuration.
It was a million yen and could not be introduced at small retail stores.

【0004】[0004]

【発明が解決するための手段】上述した問題点を解決す
るため、本発明の遠隔監視システムではISDN対応テ
レビ電話を使用して店と自宅間の画像伝送を行う。外部
監視カメラは店のテレビ電話に接続し、店内の監視した
い場所、例えばレジ付近を撮影目標として店内の天井に
設置する。感知器は店のテレビ電話に接続し、閉店後に
店内の監視したい場所、例えば出入口付近を感知目標と
して店内の天井に設置する。外部マイクは店のテレビ電
話に接続し、店内の監視したい場所、例えばレジ付近を
集音目標として店内に設置する。自宅ではISDN対応
テレビ電話に接続した大画面モニタによって監視する。
In order to solve the above-mentioned problems, the remote monitoring system of the present invention uses an ISDN-compatible videophone to transmit an image between a store and a house. The external surveillance camera is connected to a videophone of the store, and is installed on the ceiling in the store with a target of monitoring in the store, for example, near a cash register as a shooting target. The sensor is connected to the video phone of the store, and after the store is closed, it is installed on the ceiling of the store as a target to be monitored in the store, for example, near the doorway. The external microphone is connected to a videophone of the store, and is installed in the store as a sound collection target at a place in the store to be monitored, for example, near a cash register. At home, it is monitored by a large-screen monitor connected to an ISDN-compatible videophone.

【0005】[0005]

【作用】上記のように設定し使用する事により、本発明
の遠隔監視システムによれば自宅にいながら店の監視を
行うことが組20万円と安価なISDN対応テレビ電話
によって可能となるためにシステム価格を約160万円
も低減する事ができるためにトータルコストの大幅な低
減が可能となり小規模な小売り店での容易に導入が可能
となり、動画と音声で離れた店内の様子をチェックでき
るので深夜営業の安全確保が計れ、レジから見えない商
品棚の確認ができる等のあたかも自分が店にいるような
安心感が得られる。さらに異常が発生したときはその状
況を映像を見ながら直ちに警察に通報する事ができ、こ
の場合単なる感知器の通報と異なり誤報の恐れは無い。
By setting and using as described above, according to the remote monitoring system of the present invention, it is possible to monitor a store while staying at home by using an inexpensive ISDN-compatible videophone as a set of 200,000 yen. In addition, the system price can be reduced by about 1.6 million yen, so the total cost can be greatly reduced, and it can be easily introduced in small retail stores. Because it is possible, the safety of late-night business can be ensured, and you can check the product shelves that are not visible from the cash register, so that you can feel as if you are at the store. Further, when an abnormality occurs, the situation can be immediately reported to the police while watching the image. In this case, unlike a mere report from the sensor, there is no possibility of a false report.

【0006】[0006]

【実施例】次に本発明について図面を参照して説明す
る。図1は本発明の一実施例を示す接続図である。図1
を参照にすると本発明の第1の実施例は、店1に設置さ
れたISDN対応テレビ電話2と接続される外部監視カ
メラ3と接続される感知器4と外部監視カメラ3に取り
付けられているマイク5と外部監視カメラ3を天井に固
定するカメラブラケット6と、自宅または本部7に設置
されたISDN対応テレビ電話8と接続される外部モニ
ター9と、相互に通信を行うISDN回線10から構成
される。店1に設置された外部監視カメラ3は日常はた
とえばレジまわりの撮影を行ない、夜間は出入口付近を
撮影する。店1に設置された感知器4は夜間、出入口付
近に人が近づいた時にアラーム信号をISDN対応テレ
ビ電話2に送り、ISDN対応テレビ電話2はISDN
回線10経由で自宅または本部7に設置されたISDN
対応テレビ電話8に自動通報され、ISDN対応テレビ
電話8ではアラーム表示と共に自動的に起動される。こ
の結果自宅または本部側では店に異常事態が発生した事
が直ちに判明し画像と音声から適切な判断が行え警察へ
の迅速な連絡が可能となる。図2は本発明の一実施例を
示す接続図である。図2を参照にすると本発明の第2の
実施例は、店1に設置されたISDN対応テレビ電話2
と接続される外部監視カメラ3と接続される感知器4と
外部監視カメラ3に取り付けられているマイク5と外部
監視カメラ3を天井に固定するカメラブラケット6と、
自宅または本部の管理者11が保持する無線を利用した
携帯電話公衆網12叉はPHS公衆網13経由で音声画
像受信が可能な端末機器14、例えばデータスコープ1
5、相互に通信を行うISDN回線10から構成され
る。店1に設置された外部監視カメラ3は日常はたとえ
ばレジまわりの撮影を行ない、夜間は出入口付近を撮影
する。店1に設置された感知器4は夜間、出入口付近に
人が近づいた時にアラーム信号をISDN対応テレビ電
話2に送り、ISDN対応テレビ電話2はISDN回線
10と携帯電話公衆網12またはPHS公衆網13経由
で、自宅または本部の管理者11が保持する音声画像受
信が可能な端末機器14、例えばデータスコープ15に
自動通報され、データスコープ15がアラーム表示と共
に自動的に起動される。この結果自宅または本部の管理
者11はどんな場所にいても店1に異常事態が発生した
事が直ちに判明し画像と音声から適切な判断が行え警察
への迅速な連絡が可能となる。図3は本発明の一実施例
を示す接続図である。図3を参照にすると本発明の第3
の実施例は、店1に設置される携帯電話公衆網12叉は
PHS公衆網13経由で音声画像送信が可能な端末機器
16、例えばデータスコープ17と接続される外部監視
カメラ3と接続される感知器4と外部監視カメラ3に取
り付けられているマイク5と外部監視カメラ3を天井に
固定するカメラブラケット8と、自宅または本部7に設
置されたISDN対応テレビ電話8と接続される外部モ
ニター9と、相互に通信を行うISDN回線10から構
成される。店1に設置された外部監視カメラ3は日常は
たとえばレジまわりの撮影を行ない、夜間は出入口付近
を撮影する。店1に設置された感知器4は夜間、出入口
付近に人が近づいた時にアラーム信号を携帯電話公衆網
12叉はPHS公衆網13経由で音声画像送信が可能な
端末機器16、例えばデータスコープ17に送り、デー
タスコープ17は携帯電話公衆網16またはPHS公衆
網17とISDN回線10経由で、自宅または本部7に
設置されたISDN対応テレビ電話8に自動通報され、
ISDN対応テレビ電話8ではアラーム表示と共に自動
的に起動される。この結果自宅または本部側では店に異
常事態が発生した事が直ちに判明し画像と音声から適切
な判断が行え警察への迅速な連絡が可能となる。この場
合店1に設置される機器は無線装置となるために違法侵
入者の回線切断等の違法行為に対しても対抗できる。図
4は本発明の一実施例を示す接続図である。図4を参照
にすると本発明の第4の実施例は、店1に設置される携
帯電話公衆網12叉はPHS公衆網13経由で音声画像
送信が可能な端末機器16、例えばデータスコープ17
と接続される外部監視カメラ3と接続される感知器4と
外部監視カメラ3に取り付けられているマイク5と外部
監視カメラ3を天井に固定するカメラブラケット6と、
自宅または本部の管理者11が保持する無線を利用した
携帯電話公衆網12叉はPHS公衆網13経由で音声画
像受信が可能な端末機器14、例えばデータスコープ1
5、相互に通信を行う携帯通信公衆網12またはPHS
公衆網13から構成される。店1に設置された外部監視
カメラ3は日常はたとえばレジまわりの撮影を行ない、
夜間は出入口付近を撮影する。店1に設置された感知器
4は夜間、出入口付近に人が近づいた時に信号を携帯電
話公衆網12叉はPHS公衆網13経由で音声画像送信
が可能な端末機器16、例えばデータスコープ16に送
り、データスコープ16は携帯電話公衆網12またはP
HS公衆網13経由で、自宅または本部の管理者11が
保持する音声画像受信が可能な端末機器14、例えばデ
ータスコープ15に自動通報され、データスコープ15
がアラーム表示と共に自動的に起動される。この結果自
宅または本部の管理者11はどんな場所にいても店1に
異常事態が発生した事が直ちに判明し画像と音声から適
切な判断が行え警察への迅速な連絡が可能となる。この
場合店1に設置される機器は無線装置となるために違法
侵入者の回線切断等の違法行為に対しても対抗できる。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. FIG. 1 is a connection diagram showing one embodiment of the present invention. FIG.
According to the first embodiment of the present invention, a sensor 4 connected to an external surveillance camera 3 connected to an ISDN-compatible videophone 2 installed in a store 1 and the external monitor camera 3 are attached. It comprises a camera bracket 6 for fixing the microphone 5 and the external monitoring camera 3 to the ceiling, an external monitor 9 connected to an ISDN-compatible videophone 8 installed at home or in the headquarters 7, and an ISDN line 10 for mutual communication. You. The external surveillance camera 3 installed in the store 1 usually photographs around a cash register, for example, and photographs around the entrance and exit at night. The detector 4 installed in the store 1 sends an alarm signal to the ISDN-compatible videophone 2 at night when a person approaches the entrance, and the ISDN-compatible videophone 2
ISDN installed at home or headquarters 7 via line 10
The automatic notification is made to the corresponding videophone 8, and the ISDN compatible videophone 8 is automatically activated together with the alarm display. As a result, at the home or the headquarters side, it is immediately found that an abnormal situation has occurred in the store, and appropriate judgment can be made from the image and the sound so that the police can be promptly contacted. FIG. 2 is a connection diagram showing one embodiment of the present invention. Referring to FIG. 2, a second embodiment of the present invention is an ISDN video telephone 2 installed in a store 1.
A sensor 4 connected to the external monitoring camera 3 connected to the camera, a microphone 5 attached to the external monitoring camera 3, a camera bracket 6 for fixing the external monitoring camera 3 to the ceiling,
A terminal device 14 capable of receiving audio and video via a mobile phone public network 12 or a PHS public network 13 using a wireless communication held by an administrator 11 at home or at a headquarters, for example, a data scope 1
5. An ISDN line 10 for mutual communication. The external surveillance camera 3 installed in the store 1 usually photographs around a cash register, for example, and photographs around the entrance and exit at night. The detector 4 installed in the store 1 sends an alarm signal to the ISDN-compatible videophone 2 at night when a person approaches the entrance, and the ISDN-compatible videophone 2 is connected to the ISDN line 10 and the mobile phone public network 12 or the PHS public network. Via 13, an automatic notification is sent to a terminal device 14 capable of receiving an audio image, for example, a data scope 15 held by the manager 11 at home or the headquarters, and the data scope 15 is automatically activated together with an alarm display. As a result, the manager 11 at home or the headquarters immediately finds out that an abnormal situation has occurred in the store 1 no matter where he is, and can make an appropriate judgment from the image and the sound to promptly contact the police. FIG. 3 is a connection diagram showing one embodiment of the present invention. Referring to FIG. 3, a third embodiment of the present invention will be described.
This embodiment is connected to an external monitoring camera 3 connected to a terminal device 16 capable of transmitting an audio image via the mobile phone public network 12 or the PHS public network 13 installed in the store 1, for example, a data scope 17. The sensor 4, the microphone 5 attached to the external surveillance camera 3, the camera bracket 8 for fixing the external surveillance camera 3 to the ceiling, and the external monitor 9 connected to the ISDN-compatible videophone 8 installed at home or in the headquarters 7 And an ISDN line 10 for mutual communication. The external surveillance camera 3 installed in the store 1 usually photographs around a cash register, for example, and photographs around the entrance and exit at night. The sensor 4 installed in the store 1 is a terminal device 16 capable of transmitting an audio signal via the cellular phone public network 12 or the PHS public network 13 at the time of a person approaching the entrance at night, for example, a data scope 17. The data scope 17 is automatically notified to the ISDN-compatible videophone 8 installed in the home or the headquarters 7 via the mobile phone public network 16 or the PHS public network 17 and the ISDN line 10,
The ISDN-compatible videophone 8 is automatically activated together with the alarm display. As a result, at the home or the headquarters side, it is immediately found that an abnormal situation has occurred in the store, and appropriate judgment can be made based on the image and the sound so that quick contact with the police is possible. In this case, since the equipment installed in the store 1 is a wireless device, the equipment can be countered against illegal acts such as disconnection of the line by an illegal intruder. FIG. 4 is a connection diagram showing one embodiment of the present invention. Referring to FIG. 4, a fourth embodiment of the present invention is directed to a terminal device 16 capable of transmitting an audio image via a mobile phone public network 12 or a PHS public network 13 installed in a store 1, for example, a data scope 17
A sensor 4 connected to the external monitoring camera 3 connected to the camera, a microphone 5 attached to the external monitoring camera 3, a camera bracket 6 for fixing the external monitoring camera 3 to the ceiling,
A terminal device 14 capable of receiving audio and video via a mobile phone public network 12 or a PHS public network 13 using a wireless communication held by an administrator 11 at home or at a headquarters, for example, a data scope 1
5. Mobile communication public network 12 or PHS for mutual communication
It is composed of a public network 13. The external surveillance camera 3 installed in the shop 1 usually shoots, for example, around a cash register.
At night, take a picture of the area near the entrance. The sensor 4 installed in the store 1 transmits a signal to a terminal device 16 capable of transmitting an audio image via the cellular phone public network 12 or the PHS public network 13 at night, for example, when a person approaches the entrance / exit, for example, a data scope 16. And the data scope 16 is the mobile phone public network 12 or P
Via the HS public network 13, a terminal device 14 capable of receiving a sound image held by the manager 11 at home or at the headquarters is automatically notified to a terminal device 14, for example, a data scope 15.
Is automatically activated with the alarm display. As a result, the manager 11 at home or at the headquarters immediately finds out that an abnormal situation has occurred in the store 1 no matter where he is, and can make an appropriate decision from the image and the sound so as to promptly contact the police. In this case, since the equipment installed in the store 1 is a wireless device, the equipment can be countered against illegal acts such as disconnection of the line by an illegal intruder.

【0007】[0007]

【発明の効果】以上説明したように、本発明の遠隔監視
システムはISDN回線との接続にISDN対応テレビ
電話を使用するためにシステム価格を大幅に低減できる
効果がある。最小構成ではモニタリングコーデックPM
−400、PM−500と監視カメラシステムSPS−
C500を使用したSONY社の遠隔地チェーンストア
監視システムが取付工事費除く価格が216万円にも達
するが本発明の実施例1の構成では59万円に抑えるこ
とが可能である。この結果小規模な小売り店の経営者で
も導入可能となる。遠隔監視システムの用途は店舗の監
視の他にも、在宅看護、エレベータ管理、銀行のCDコ
ーナー管理、レストランなどで接客の状況把握、パチン
コ店の管理等に使えることは言うまでもない。更に送信
側、受信側、送受信側両方を携帯通信またはPHSにて
置き換えた場合、無線装置となるために違法侵入者の回
線切断等の違法行為に対しても対抗でき、セキュリィテ
ィ機能はいっそう向上する。
As described above, since the remote monitoring system of the present invention uses an ISDN-compatible video telephone for connection to an ISDN line, the system price can be greatly reduced. Monitoring codec PM in minimum configuration
-400, PM-500 and surveillance camera system SPS-
The price of the remote chain store monitoring system of the SONY company using the C500 can reach 2.16 million yen excluding the installation work cost, but the configuration of the first embodiment of the present invention can suppress the price to 590,000 yen. As a result, it can be introduced by small retailers. It goes without saying that the remote monitoring system can be used not only for store monitoring, but also for home nursing, elevator management, CD corner management at banks, grasping customer service at restaurants, pachinko parlors, and the like. Further, when both the transmitting side, the receiving side, and the transmitting / receiving side are replaced by portable communication or PHS, since they become wireless devices, they can counter illegal acts such as disconnection of the line by an illegal intruder, and the security function is further improved. .

【0008】[0008]

【図面の簡単な説明】[Brief description of the drawings]

【図1】遠隔監視システムの接続図(端末が両方ともI
SDN対応テレビ電話)
FIG. 1 is a connection diagram of a remote monitoring system (both terminals are I
SDN compatible videophone)

【図2】遠隔監視システムの接続図(店の端末はISD
N対応テレビ電話、他は携帯叉はPHS)
FIG. 2 is a connection diagram of the remote monitoring system (the terminal of the store is ISD
N compatible videophone, others are mobile phones or PHS)

【図3】遠隔監視システムの接続図(店の端末は携帯叉
はPHS、他はISDN対応テレビ電話)
FIG. 3 is a connection diagram of the remote monitoring system (the terminal of the store is a portable or PHS, and the others are ISDN compatible videophones)

【図4】遠隔監視システムの接続図(端末が両方とも携
帯叉はPHS)
Fig. 4 Connection diagram of remote monitoring system (both terminals are portable or PHS)

【符号の説明】[Explanation of symbols]

1 店 2 ISDN対応テレビ電話(送信側) 3 外部監視カメラ 4 感知器 5 マイク 6 カメラブラケット 7 自宅または本部 8 ISDN対応テレビ電話(受信側) 9 外部モニター 10 ISDN回線 11 自宅または本部の管理者 12 携帯電話公衆網 13 PHS公衆網 14 端末機器 15 データースコープ 16 携帯電話公衆網 17 PHS公衆網 1 store 2 ISDN compatible videophone (transmitting side) 3 external surveillance camera 4 sensor 5 microphone 6 camera bracket 7 home or headquarters 8 ISDN compatible videophone (receiving side) 9 external monitor 10 ISDN line 11 home or main office manager 12 Mobile phone public network 13 PHS public network 14 Terminal equipment 15 Data scope 16 Mobile phone public network 17 PHS public network

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 FI H04N 7/18 H04B 7/26 109M ──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 6 Identification code FI H04N 7/18 H04B 7/26 109M

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 ISDN対応テレビ電話と監視カメラと
感知器等を用い、店の様子を動画と音声によって離れた
自宅から確認する遠隔監視システムにおいて店に設置し
ているISDN対応テレビ電話に外部接続監視カメラと
外部感知器と外部接続マイクを接続しかつ動画と音声を
送信し音声のみを受信し、ISDN回線経由で自宅のI
SDN対応テレビ電話に接続した大画面モニタによって
監視する事を特徴とする遠隔監視システム。
1. An external connection to an ISDN-compatible videophone installed in a store in a remote monitoring system that uses an ISDN-compatible videophone, a surveillance camera, a sensor, and the like to check the state of the store from a distant home by video and audio. Connect a surveillance camera, an external sensor, and an external connection microphone, transmit video and audio, receive only audio,
A remote monitoring system characterized by monitoring by a large screen monitor connected to an SDN-compatible videophone.
【請求項2】 請求項1において自宅ISDN対応テレ
ビ電話が無線を利用した携帯電話叉はPHS経由で音声
画像受信が可能な端末機器、例えばデータスコープであ
ることを特徴とする遠隔監視システム。
2. The remote monitoring system according to claim 1, wherein the home ISDN-compatible videophone is a terminal device capable of receiving a voice image via a wireless mobile phone or a PHS, for example, a data scope.
【請求項3】 請求項1において店側ISDN対応テレ
ビ電話が無線を利用した携帯電話叉はPHS経由で音声
画像送信が可能であり外部感知器接続端子を有する端末
機器であることを特徴とする遠隔監視システム。
3. The store-side ISDN-compatible videophone according to claim 1, wherein the store-side ISDN-compatible videophone is a terminal device capable of transmitting an audio image via a mobile phone or PHS using a wireless communication and having an external sensor connection terminal. Remote monitoring system.
【請求項4】 請求項1において店側ISDN対応テレ
ビ電話が無線を利用した携帯電話叉はPHS経由で音声
画像送信が可能であり外部感知器接続端子を有する端末
機器であることを特徴とし、かつ自宅ISDN対応テレ
ビ電話が無線を利用した携帯電話叉はPHS経由で音声
画像受信が可能な端末機器、例えばデータスコープであ
ることを特徴とする遠隔監視システム。
4. The store-side ISDN-compatible video phone according to claim 1, wherein the video phone is a terminal device capable of transmitting an audio image via a mobile phone or PHS using a wireless communication and having an external sensor connection terminal, A remote monitoring system characterized in that the home ISDN-compatible videophone is a terminal device capable of receiving a voice image via a mobile phone or PHS using wireless, for example, a data scope.
JP10063816A 1998-02-05 1998-02-05 Remote supervisory system Pending JPH11225217A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10063816A JPH11225217A (en) 1998-02-05 1998-02-05 Remote supervisory system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10063816A JPH11225217A (en) 1998-02-05 1998-02-05 Remote supervisory system

Publications (1)

Publication Number Publication Date
JPH11225217A true JPH11225217A (en) 1999-08-17

Family

ID=13240282

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10063816A Pending JPH11225217A (en) 1998-02-05 1998-02-05 Remote supervisory system

Country Status (1)

Country Link
JP (1) JPH11225217A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020029220A (en) * 2000-10-12 2002-04-18 김영배 Apparatus and method for remotely guard using ISDN

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020029220A (en) * 2000-10-12 2002-04-18 김영배 Apparatus and method for remotely guard using ISDN

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