JPH02117256A - Simple data transmitter/receiver - Google Patents

Simple data transmitter/receiver

Info

Publication number
JPH02117256A
JPH02117256A JP27146488A JP27146488A JPH02117256A JP H02117256 A JPH02117256 A JP H02117256A JP 27146488 A JP27146488 A JP 27146488A JP 27146488 A JP27146488 A JP 27146488A JP H02117256 A JPH02117256 A JP H02117256A
Authority
JP
Japan
Prior art keywords
signal
slave station
telephone
tone
receiving 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
JP27146488A
Other languages
Japanese (ja)
Inventor
Matsuzo Kon
紺 松三
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.)
TAKEMOTO DENKI KEIKI KK
Original Assignee
TAKEMOTO DENKI KEIKI 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 TAKEMOTO DENKI KEIKI KK filed Critical TAKEMOTO DENKI KEIKI KK
Priority to JP27146488A priority Critical patent/JPH02117256A/en
Publication of JPH02117256A publication Critical patent/JPH02117256A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To inexpensively construct facilities and to improve universality by installing a telephone set additionally which receives a tone signal transmitted from a slave station and generates plural kinds of intermittent tones or synthetic voice based on the reception signal and informs them to a communication destination. CONSTITUTION:When a data signal from a various kinds of sensors 23 in the slave station 20 is inputted to automatic communication equipment 24, automatic line switching is performed via a line control part, etc., in the equipment 24, and also, it is converted to the tone signal based on a DTMF signal in a push-button dial telephone set. The tone signal is transmitted from the slave station 20 to a master station 21 on a public telephone line 52 via central offices 50 and 51, and also, it is transmitted to the telephone set 22 installed additionally via the central office 51. And the telephone set 22 receives the tone signal, and generates the plural kinds of intermittent tone patterns or synthetic voice by the data signal of the sensor 23, then, informs it to the communication destination. In such a way, it is possible to recognize information by installing only the telephone set 22 at an arbitrary location in the transmission/ reception of a few amount of data without being limited by the master station 21, and to obtain inexpensive facility, and to improve the universality.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は公衆電話回線を利用した簡易データ送受信装置
に関し、詳しくは産業システムの管理監視及び保安シス
テム等の各種センサによる情報を自動通報する簡易デー
タ送受1菖装置に関する。
[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a simple data transmitting/receiving device using a public telephone line, and more specifically, a simple data transmitting/receiving device that automatically reports information from various sensors such as management monitoring and security systems of industrial systems. The present invention relates to a data transmitting/receiving device.

〔従来の技術〕[Conventional technology]

通常、大型コンピュータによるデータ送受信では、公衆
電話回線を利用するのが一般的である。この公衆電話回
線を利用したデータ送受信装置を第4図に示し説明する
。このデータ送受信装置は、子局(1)と親局(2)と
を公衆電話回線(3)を介して電話局の交換機(4)(
5)で接続する。上記子局(1)及び親局(2)は、C
PU (中央演算処理装置)(6)(7)、モデム(8
)(9)及びNCtJ (精制御装置)  (10) 
 (11)で構成される。
Normally, large computers send and receive data using public telephone lines. A data transmitting/receiving device using this public telephone line is shown in FIG. 4 and will be explained. This data transmitting/receiving device connects a slave station (1) and a master station (2) via a public telephone line (3) to a telephone exchange (4) (
5) Connect. The above slave station (1) and master station (2) are C
PU (central processing unit) (6) (7), modem (8)
) (9) and NCtJ (precision control device) (10)
It consists of (11).

上記データ送受信装置によるデータ送受信は以下のよう
にしで行われる。即ち、子局(1)においてCPU (
6)に入力されたデータはモデム(8)及びNCU(1
0)を介して電話局の交換機(4)(5)を介し7て公
衆電話回線(3)で伝送され、この子局(1)から送信
されたデータを親局(2)で受信する。この親局(2)
では、データがNCU(11)及びモデム(9)を介し
てCPU (7)に送られ、このCPU(7)から出力
される。
Data transmission and reception by the data transmission and reception device is performed as follows. That is, in the slave station (1), the CPU (
6) is sent to the modem (8) and NCU (1).
The data transmitted from the slave station (1) is received by the master station (2). This master station (2)
Then, data is sent to the CPU (7) via the NCU (11) and modem (9), and output from the CPU (7).

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

ところで、前述したデータ送受信装置では、多量のデー
タを高速で送受信する場合に好適であるが、装置自体が
非常に高価であり、産業システムの管理監視や保安シス
テム等の各種センサによる情報を自動通報する場合のよ
うに、少量のデータの送受信では設備的に割高となって
不向きであった。
By the way, the data transmitting and receiving device described above is suitable for transmitting and receiving a large amount of data at high speed, but the device itself is very expensive, and it is difficult to automatically report information from various sensors such as management monitoring of industrial systems and security systems. The equipment was expensive and unsuitable for sending and receiving small amounts of data, such as when sending and receiving small amounts of data.

そこで、本出願人は、先に、少量のデータを低速で送受
信する簡易データ送受信装置を提案している(特開昭6
2 214760.214761.214762.27
9770号公報)。更に最近では、上記簡易データ送受
信装置で使用される通報手段において汎用性の向上が要
望されている。
Therefore, the present applicant has previously proposed a simple data transmitting and receiving device that transmits and receives small amounts of data at low speed (Japanese Patent Laid-Open No. 6
2 214760.214761.214762.27
9770). Furthermore, recently, there has been a demand for improved versatility in the reporting means used in the above-mentioned simple data transmitting/receiving device.

それ故に、本発明は上記問題点に鑑みて提案されたもの
で、その目的とするところは、汎用性の向上を実現可能
にする簡易フ゛−タ送受信装置を櫂供することにある。
Therefore, the present invention has been proposed in view of the above-mentioned problems, and its object is to provide a simple filter transmitting/receiving device that can realize improved versatility.

〔課題を解決するための手段〕[Means to solve the problem]

本発明における上記目的を達成するための技術的手段は
、押しボタンダイ−トル電話機でのDTMF信号に基づ
くトーン信号を子局から公衆電話回線で送信し、そのト
ーン信号を親局にて受信してBCD信号に変換する簡易
データ送受信装置であって、上記子局での各種センサの
入力信号を含む各種データ信号を変換して子局から送信
されたトーン信号を受信し、上記センサの人力信号によ
る情報をこれに基づく複数種の断続音或いは合成音声で
通報する電話機を付設した簡易データ送受信装置である
The technical means for achieving the above object of the present invention is to transmit a tone signal based on a DTMF signal in a push-button dial telephone from a slave station over a public telephone line, and receive the tone signal at a master station. A simple data transmitting/receiving device that converts various data signals including input signals of various sensors in the slave station into BCD signals, receives tone signals transmitted from the slave station, and receives human input signals of the sensor. This is a simple data transmitting/receiving device equipped with a telephone that reports information based on the information using multiple types of intermittent tones or synthesized voices.

〔作用〕[Effect]

本発明に係る簡易データ送受信装置では、子局にて、各
種センサの入力信号を含む各種データ信号をIJ T 
M F信号に基づく(−−ン信号に変換する。このトー
ン信号を子)4から公衆電話回線を介して送信し、選定
された電話機で受信する。この電話機では、上記子局で
の各種センサの人力データ信号による情報をこれに基づ
く複数種の断続音或いは合成音声でjm報する。
In the simple data transmitting/receiving device according to the present invention, the slave station transmits various data signals including input signals of various sensors to the IJT.
Based on the MF signal (converted to a tone signal), this tone signal is transmitted from the slave 4 via the public telephone line and received by the selected telephone. This telephone transmits information based on human data signals from various sensors at the slave station using a plurality of types of intermittent tones or synthesized voices based on the information.

〔実施例〕〔Example〕

本発明に係る簡易データ送受信装置の一実施例を第1図
乃至第3図を参照しながら説明する。
An embodiment of a simple data transmitting/receiving device according to the present invention will be described with reference to FIGS. 1 to 3.

第1図に示す簡易データ送受信装置は、1対の子局(2
1)及び親局(21)からなり、本発明の特徴は上記親
局(21)とは別に電話Jfi (22)を付加したこ
とにある。
The simple data transmitting/receiving device shown in Fig. 1 consists of a pair of slave stations (2
1) and a master station (21), and the feature of the present invention is that a telephone Jfi (22) is added separately from the master station (21).

上記子局(20)において、(23)はアナログ人力、
無電圧接点人力及びパルス入力等による自動通報用の各
種センサ、(24)は上記各種センサ(23)が入力接
続された後述の自動通報装置、(25)は既設の電話機
、(26)は上記自動通報装置(24)及び電話機(2
5)に接続された切り分は器で、電気的な妨害発生等の
万一の時に上記自動通報装置(24)を回線から切離す
In the above slave station (20), (23) is analog human power,
Various sensors for automatic notification using non-voltage contact manual input and pulse input, etc. (24) is the automatic notification device described below to which the above various sensors (23) are input connected, (25) is an existing telephone, (26) is the above-mentioned Automatic notification device (24) and telephone (2
The disconnection connected to 5) is a device that disconnects the automatic notification device (24) from the line in the event of electrical interference or the like.

(27)は上記切り分は器(26)に接続された保安器
である。上記自動通報装置(24)は、第2図に示すよ
うにCPtJ(2E()を内蔵し、各種センサ(23)
が接続される入力端子のうち、アナログ入力端子と上記
CPU(28)間にマルチプレクサ(29)及びA/D
コンバータ(30)を接続する。また、電源入力端子と
CPU(28)間に電源切替部(31)を接続する。一
方、上記CPU(2B)の出力端子間に、電話機(25
)との自動回線切換えを実行する回線制御部(32)、
及び押しボタンダイヤル電話機でのD ’r’ M F
(Dual  Tone  Multi Froquo
ncy )信号に基づくトーン信号を発生させるDTM
F  I C(33)を接続する。また外部端子には、
必要に応じて設定器(34)が接続可能である。この設
定器(34)は、テンキー操作等により親局(21)或
いは電話機(22)の通報先選択、電話番号、通報タイ
ミング等の初期データをCPU(28)に設定するもの
である。また、上記電話機(22)において、各種セン
−9−(23)の入力信号による情報を通報するための
複数種(例えば7種類)の断続音パターン或いは合成音
声パターンを予め上記CPU(28)にROMボード等
により記憶させて設定する。尚、図中、(35)は通報
要因の発生時刻等の時計機能を有するタイムベース、(
36)は在宅或いは不在状態を切換えるスイッチである
(27) is a protector connected to the container (26). The automatic notification device (24) has a built-in CPtJ (2E()) as shown in Fig. 2, and various sensors (23).
A multiplexer (29) and an A/D are connected between the analog input terminal and the CPU (28).
Connect the converter (30). Further, a power supply switching unit (31) is connected between the power input terminal and the CPU (28). On the other hand, a telephone (25
), a line control unit (32) that executes automatic line switching with
and D 'r' M F on push-button dial telephones.
(Dual Tone Multi Froquo
DTM that generates tone signals based on ncy) signals
Connect FIC (33). In addition, the external terminal has
A setting device (34) can be connected as necessary. This setting device (34) is used to set initial data such as selection of reporting destination, telephone number, reporting timing, etc. of the master station (21) or telephone (22) to the CPU (28) by operating the numeric keypad or the like. In addition, in the telephone (22), a plurality of types (for example, 7 types) of intermittent tone patterns or synthetic voice patterns for reporting information based on input signals of various sensors 9-(23) are sent to the CPU (28) in advance. The settings are stored in a ROM board or the like. In the figure, (35) is a time base (
36) is a switch for switching between home and absence status.

次に第1図の親局(21)において、(37)は後述の
自動受信装置、(38)  (39)は−上記自動受信
装置(37)に接続されたパーソナルコンビエータ及び
プリンタである。上記自動受信装置(37)は、第3図
に示すようにCPU(40)を内蔵し、このCPU(4
0)を中心に、既設の電話機(41)との自動回線切換
えを実行する回線制御部(42) 、DTMF/BCD
変換部(43)、OFFフックダイヤル・DTMF発生
信号制?a部(44) 、パーソナルコンピュータ(3
8) 7!l<接続されるB CD/R5232C変換
部(45)、データメモリ部(46) 、プリンタ(3
9)が接続されるプリンタI/F部(47) 、電源部
(48)及び必要に応じて設定器(34)が接続可能な
設定器1/F部(49)で回路構成される。この設定器
(34)は、前述した子局(20)での自動通報装置(
24)の場合と同様、テンキー操作等によりダイヤルパ
ルス種類や電話番号等のデータをCPU(40)等に設
定するものである。
Next, in the master station (21) in FIG. 1, (37) is an automatic receiving device, which will be described later, and (38) and (39) are a personal combinator and printer connected to the automatic receiving device (37). The automatic receiving device (37) has a built-in CPU (40) as shown in FIG.
0), a line control unit (42) that performs automatic line switching with the existing telephone set (41), and DTMF/BCD.
Conversion section (43), OFF hook dial/DTMF generation signal system? Part a (44), personal computer (3
8) 7! l<Connected B CD/R5232C conversion unit (45), data memory unit (46), printer (3)
The circuit includes a printer I/F section (47) to which the printer 9) is connected, a power supply section (48), and a setting device 1/F section (49) to which a setting device (34) can be connected if necessary. This setting device (34) is the automatic notification device (
As in case 24), data such as dial pulse type and telephone number are set in the CPU (40) etc. by operating the numeric keypad or the like.

本発明に係る簡易データ送受信装置では、第1図に示す
ように電話局(50)  (51)の交換機を介して公
衆電話回線(52)で前述した子局(20)と親局(2
1)とを接続すると共に、上記親局(21)とは別に電
話機(22)を子局(20)に接続する。
In the simple data transmitting/receiving device according to the present invention, as shown in FIG.
1), and at the same time, a telephone (22) is connected to the slave station (20) separately from the master station (21).

上記簡易データ送受信装置を使用するに先立って、子局
(20)の自動通報装置(24)に設定器(34)を接
続し、親局(21)或いは電話機(22)の通報先選択
、電話番号、通報タイミング等の初期データをCPU(
28)に設定する。
Before using the above simple data transmitting/receiving device, connect the setting device (34) to the automatic reporting device (24) of the slave station (20), select the reporting destination of the master station (21) or telephone (22), and make a telephone call. Initial data such as numbers and notification timing are sent to the CPU (
28).

簡易データ送受信装置の使用時、各種センサ(23)の
いずれかから、アナログ入力、無電圧接也入力及びパル
ス入力によるデータ信号が自動通報装置(24)に入力
されると、CPU(28)の制御により回線制御部(3
2)で自動回線切換えが実行されると共に、DTMF 
 I C(33)で上記データ信号が押しボタンダイヤ
ル電話機でのDTMF信号に基づくトーン信号に変換さ
れる。このトーン信号は切り分は器(26)及び保安器
(27)を介して子局(20)から、電話局(50) 
 (51)の交換機を介して公衆電話回線(52)で親
局(21)へ送信される。
When using the simple data transmitting/receiving device, when a data signal by analog input, non-voltage contact input, or pulse input is input from any of the various sensors (23) to the automatic notification device (24), the CPU (28) The line control section (3
2), automatic line switching is executed, and DTMF
The IC (33) converts the data signal into a tone signal based on the DTMF signal in the push-button dial telephone. This tone signal is sent from the slave station (20) to the telephone station (50) via the cutter (26) and protector (27).
It is transmitted to the master station (21) via the public telephone line (52) via the exchange (51).

上記親局(21)の自動受信装置(37)では、CPU
(40)の制御により回線制御部(42)で自動回線切
換えして自動通報装置(24)からの呼出しを自動検出
して回線を接続し、自動通報用の各種センサ(23)に
よるデータ信号に基づくトーン信号を自動受信する。こ
のDTMF信号に基づくトーン信号は、DTMF/BC
D変換部(43)でBCD信号に変換され、パーソナル
コンピュータ(38)の使用時には、BCD/R523
2C変換部(45)でR3232C信号に変換されて出
力され、ト記パーソナルコンピュータ(38)にて各種
センサ(23)に基づく情報がデータ処理される。また
、プリンタ(39)の使用時には、プリンタI/F部(
47)を介して出力され、上記ブリンク(39)によっ
て各種センサ(23)に基づく情報が印字される。
In the automatic receiving device (37) of the master station (21), the CPU
Under the control of (40), the line control unit (42) automatically switches the line, automatically detects a call from the automatic notification device (24), connects the line, and converts the data signal from various sensors (23) for automatic notification to the line control unit (42). Automatically receive tone signals based on The tone signal based on this DTMF signal is DTMF/BC
It is converted into a BCD signal by the D converter (43), and when using the personal computer (38), it is converted into a BCD/R523 signal.
The signal is converted into an R3232C signal by the 2C converter (45) and output, and the information based on the various sensors (23) is processed by the personal computer (38). Also, when using the printer (39), the printer I/F section (
47), and information based on the various sensors (23) is printed by the blink (39).

上記トーン信号は、このように子局(20)から電話局
(50)  (51)を介して公衆電話回線(52)で
親局(21)へ送信される一方、上記親局(21)とは
別に電話機(22)へも送信される。上記電話機(22
)では、子局(20)で発生した通報要因に応じた各種
センサ(23)でのデータ信号に基づ<DTMF信号の
トーン信号を受信し、このセンサ(23)のデータ信号
による情報を、これに基づく断続音或いは合成音声を発
生させることにより通報する。
The tone signal is thus transmitted from the slave station (20) to the master station (21) via the telephone station (50) (51) over the public telephone line (52), while at the same time is also separately transmitted to the telephone (22). The above telephone (22
) receives a tone signal of the DTMF signal based on data signals from various sensors (23) corresponding to reporting factors generated in the slave station (20), and receives information from the data signal from this sensor (23). A notification is made by generating an intermittent sound or synthetic voice based on this.

尚、上記実施例では、子局(20)と親局(21)が1
対1で電話機(22)が1つの場合について説明したが
、本発明はこれに限定されることなく、1つの親局に対
して多数の子局(20)  (20)及び電話tffl
 (22)  (22)−を設けることも可能である。
In the above embodiment, the slave station (20) and the master station (21) are one
Although a case has been described in which there is one telephone (22) in a one-to-one relationship, the present invention is not limited to this, and the present invention is not limited to this.
(22) It is also possible to provide (22)-.

〔発明の効果〕〔Effect of the invention〕

本発明に係る簡易データ送受信装置では、子局での各種
センサによって得られた情報を複数棟の断続音或いは合
成音声で通報する電話機を付設したから、親局に限らず
、上記電話機のみを任意の場所に設置して情報を認知す
ることができ、少量のデータの送受信においては設備的
にも安価で汎用性に冨む簡易データ送受信装置を提供で
きる。このような簡易データ送受信装置は、ガス、水道
、電気の自動検針、FA稼動管理の異常監視、冷凍・冷
蔵設備の温度管理等の産業システムの管理監視や、在宅
病人の安全管理、火災警報等の保安システムに応用すれ
ばその効果は大である。
The simple data transmitting/receiving device according to the present invention is equipped with a telephone that reports information obtained by various sensors at the slave station using multiple intermittent tones or synthesized voices. It is possible to provide a simple data transmitting/receiving device that can be installed in a location to recognize information, is inexpensive in terms of equipment, and has great versatility when transmitting and receiving small amounts of data. These simple data transmitting and receiving devices are used for automatic meter reading of gas, water, and electricity, monitoring of abnormalities in FA operation management, management and monitoring of industrial systems such as temperature control of freezing and refrigeration equipment, safety management of sick people at home, fire alarms, etc. The effect will be great if applied to security systems.

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

第1図は本発明に係る簡易データ送受信装置の一実施例
を示す概略構成図、第2図は第1図の簡易データ送受信
装置の子局を示すブロック図、第3図は第1図の簡易デ
ータ送受信装置の親局を示すブロック図である。 第4図はデータ送受信装置の従来例を示す概略構成ブロ
ック図である。 (20) −子局、     (21) −親局、(2
2) −電話機、    (23) −各種センサ、(
52) −公衆電話回線。 特 許 出 廓 人  竹本電機計器株式会社代   
 理    人   江   涼   省   吾図 第3 図 、i′7 / 弔 図
1 is a schematic configuration diagram showing an embodiment of a simple data transmitting/receiving device according to the present invention, FIG. 2 is a block diagram showing a slave station of the simple data transmitting/receiving device of FIG. 1, and FIG. 3 is a block diagram showing an example of the simple data transmitting/receiving device of FIG. FIG. 2 is a block diagram showing a master station of the simple data transmitting/receiving device. FIG. 4 is a schematic block diagram showing a conventional example of a data transmitting/receiving device. (20) -Slave station, (21) -Master station, (2
2) -Telephone, (23) -Various sensors, (
52) -Public telephone line. Patent agent: Takemoto Electric Instruments Co., Ltd.
Ri Ren Jiang Liang Province Wu Figure 3, i'7 / Funeral map

Claims (2)

【特許請求の範囲】[Claims] (1)押しボタンダイヤル電話機でのDTMF信号に基
づくトーン信号を子局から公衆電話回線で送信し、その
トーン信号を親局にて受信してBCD信号に変換する簡
易データ送受信装置であって、 上記子局での各種センサの入力信号を含む各種データ信
号を変換して子局から送信されたトーン信号を受信し、
上記センサの入力信号による情報をこれに基づく複数種
の断続音で通報する電話機を付設したことを特徴とする
簡易データ送受信装置。
(1) A simple data transmitting/receiving device that transmits a tone signal based on a DTMF signal from a push-button dial telephone over a public telephone line from a slave station, receives the tone signal at a master station, and converts it into a BCD signal, Converting various data signals including input signals of various sensors in the slave station and receiving tone signals transmitted from the slave station,
A simple data transmitting/receiving device characterized in that it is equipped with a telephone that reports information based on the input signal of the sensor using a plurality of types of intermittent tones based on the information.
(2)押しボタンダイヤル電話機でのDTMF信号に基
づくトーン信号を子局から公衆電話回線で送信し、その
トーン信号を親局にて受信してBCD信号に変換する簡
易データ送受信装置であって、 上記子局での各種センサの入力信号を含む各種データ信
号を変換して子局から送信されたトーン信号を受信し、
上記センサの入力信号による情報をこれに基づいて合成
された複数種の音声で通報する電話機を付設したことを
特徴とする簡易データ送受信装置。
(2) A simple data transmitting/receiving device that transmits a tone signal based on a DTMF signal in a push-button dial telephone from a slave station over a public telephone line, receives the tone signal at a master station, and converts it into a BCD signal, Converting various data signals including input signals of various sensors in the slave station and receiving tone signals transmitted from the slave station,
A simple data transmitting/receiving device characterized in that it is equipped with a telephone that reports information from the input signal of the sensor using a plurality of types of voices synthesized based on the information.
JP27146488A 1988-10-26 1988-10-26 Simple data transmitter/receiver Pending JPH02117256A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27146488A JPH02117256A (en) 1988-10-26 1988-10-26 Simple data transmitter/receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27146488A JPH02117256A (en) 1988-10-26 1988-10-26 Simple data transmitter/receiver

Publications (1)

Publication Number Publication Date
JPH02117256A true JPH02117256A (en) 1990-05-01

Family

ID=17500401

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27146488A Pending JPH02117256A (en) 1988-10-26 1988-10-26 Simple data transmitter/receiver

Country Status (1)

Country Link
JP (1) JPH02117256A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61281751A (en) * 1985-06-07 1986-12-12 Nec Corp Home security system with announcement
JPS62214762A (en) * 1986-03-14 1987-09-21 Takemoto Denki Keiki Kk Simple data source and sink

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61281751A (en) * 1985-06-07 1986-12-12 Nec Corp Home security system with announcement
JPS62214762A (en) * 1986-03-14 1987-09-21 Takemoto Denki Keiki Kk Simple data source and sink

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