JP2004120593A - Television intercom - Google Patents

Television intercom Download PDF

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Publication number
JP2004120593A
JP2004120593A JP2002283676A JP2002283676A JP2004120593A JP 2004120593 A JP2004120593 A JP 2004120593A JP 2002283676 A JP2002283676 A JP 2002283676A JP 2002283676 A JP2002283676 A JP 2002283676A JP 2004120593 A JP2004120593 A JP 2004120593A
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Japan
Prior art keywords
unit
line
alarm
signal
slave
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JP2002283676A
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Japanese (ja)
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JP4187493B2 (en
Inventor
Tsuneo Koyanagi
小柳 常雄
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Nohmi Bosai Ltd
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Nohmi Bosai Ltd
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Priority to JP2002283676A priority Critical patent/JP4187493B2/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a television intercom which rings a warning without consuming large power in the case of power interruption, etc. <P>SOLUTION: When emergency power supply is supplied from an emergency battery 33 to a power supply circuit 7 of a master machine A in the case of power interruption, a CPU 1 prohibits power supply from a power supply circuit 9 of a display part 4 to a slave machine B via a video line 13 by continuing transmission of an OFF signal to the power supply circuit 9 of the display part 4 as a state in which application of a call switch 20 of the slave machine B is not accepted. In this state, fire detector detects outbreak of fire, when a fire signal outputted from the fire detector is recognized by the CPU 1 of the master machine A, a changeover switch 6 is switched to the side of a warning control part 3 by the CPU 1 and a warning signal is outputted on a sound line 12 as a warning sound by voice from the warning control part 3. The warning signal is received by a voice control part 15 of the slave machine B, and the warning sound is rung from a speaker 23 of a conversation part 16. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
この発明は、テレビドアホンに係り、特に子機と親機の間で通話がなされると共に子機のカメラで撮影された映像を親機の表示部で表示するテレビドアホンに関する。
【0002】
【従来の技術】
従来から、ドアの外側に配置された子機と屋内の親機との間で呼び出しや通話を行うドアホンが使用されているが、子機に撮影用のカメラを取り付けると共に親機に映像表示用の表示部を備え、呼び出し及び通話の機能に加えて、子機のカメラで訪問者等を撮影し、その映像を親機の表示部に表示するテレビドアホンが使用されつつある(例えば、特許文献1参照)。
【0003】
【特許文献1】
特開平10−243381号公報
【0004】
この種のテレビドアホンでは、親機と子機とが呼び出し及び通話のための線路で互いに接続され、この線路を介して親機から子機へ電源を供給すると共に音声信号と映像信号とを重畳させて親機と子機との間で伝送している。
また、近年は、防災や警備上の各種情報に対する情報盤としての機能を兼ね備えたテレビドアホンも用いられるようになり、親機や子機から警報を発することができるようになった。
【0005】
【発明が解決しようとする課題】
しかしながら、テレビドアホンは通話だけでなくカメラによる撮影を行うために大きな電力を消費し、停電時等に例えば管理室の非常用のバッテリから各戸へ非常用電源が供給された場合にも、テレビドアホンとして大きな電力を消費することとなるので好ましくない。一方、電力消費を軽減するために、このような非常時にテレビドアホンの電源を遮断してしまうと、防災や警備上の情報に基づいて警報を発することもできなくなり、支障を来すこととなる。
この発明はこのような問題点を解消するためになされたもので、停電時等に大きな電力を消費することなく警報を鳴動させることができるテレビドアホンを提供することを目的とする。
【0006】
【課題を解決するための手段】
この発明に係るテレビドアホンは、子機の通話部と親機の通話部との間で通話がなされると共に子機のカメラで撮影された映像を親機の表示部で表示するテレビドアホンにおいて、子機と親機とが映像線及び音声線を介して互いに接続され、子機は、カメラにより得られた映像信号を映像線を介して親機へ送出する映像制御部と、子機の通話部及び親機の通話部による音声信号を音声線を介して親機との間で送受信する音声制御部とを備え、親機は警報時に音声線を介して警報信号を子機へ送出し、子機の音声制御部は音声線を介して親機から受信した警報信号に基づいて子機の通話部から警報音を鳴動させるものである。
【0007】
子機と親機とをさらに制御線を介して互いに接続し、親機は警報時に制御線を介して移報出力を子機へ送出し、子機の警報表示部が、制御線を介して親機から受信した移報出力に基づいて警報表示灯を点灯させるように構成することが好ましい。
さらに、子機に1または複数の火災感知器が接続される接続端子を設置し、これらの火災感知器からの火災信号を信号線を介して親機へ入力させる中継器機能を持たせることもできる。
【0008】
【発明の実施の形態】
以下、この発明の実施の形態を添付図面に基づいて説明する。
図1にこの発明の実施の形態に係るテレビドアホンの構成を示す。テレビドアホンは、屋内に配置される親機Aとドアの外側に配置される子機Bとを備えている。
親機Aは、CPU1を有し、このCPU1に音声制御部2及び警報制御部3と表示部4が接続されると共に音声制御部2に通話部5が接続されている。音声制御部2と警報制御部3にはCPU1からの指令により作動する切替スイッチ6が接続されている。さらに、親機Aには、CPU1、音声制御部2、警報制御部3及び表示部4へ電源を供給するための電源回路7が接続され、この電源回路7が商用電源に接続されている。表示部4は、表示部用のCPU8と、CPU8に接続された電源回路9を有すると共に、映像表示用のLCD10及びこのLCD10に接続された復調回路11を有している。また、通話部5は、図示しないスピーカとマイクとを備えている。
【0009】
切替スイッチ6に音声線12が、表示部4に映像線13が、CPU1に制御線14がそれぞれ接続され、これら音声線12、映像線13及び制御線14が子機Bまで延設されている。これら音声線12、映像線13及び制御線14はそれぞれ2本1組の電線として配設されるが、制御線14の1本を音声線12の1本に共用することもできる。
【0010】
一方、子機Bは、音声線12に接続された音声制御部15とこの音声制御部15に接続された通話部16を有すると共に、映像線13に接続された映像制御部17を有し、さらに制御線14に接続された警報表示部18を有している。
音声制御部15は、それぞれ音声線12に接続された通電表示灯19、呼出スイッチ20及びトランス21を有し、さらに、トランス21に接続された増幅回路22を有している。通話部16は、音声制御部15のトランス21に接続されたスピーカ23と増幅回路22に接続されたマイク24を備えている。
映像制御部17は、映像線13に接続された変調回路25と、変調回路25に接続されると共にカメラとして用いられるCCDセンサ27と、照明用LED28と、明るさセンサ29を有し、さらに映像制御部17の各部に電源を供給する電源回路26を有している。
また、警報表示部18は、警報表示灯30を有すると共に、図示しないが少なくとも一つの火災感知器を接続するための接続端子と外部試験器を接続するための接続端子を備え、親機Aを火災受信機として火災感知器からの火災信号を図示しない信号線を介して受信させると共に、外部試験器の接続時に点検のための信号を火災感知器との間で送受信することができるように信号経路を切り替える中継器機能を備えている。
【0011】
次に、この実施の形態に係るテレビドアホンの動作について説明する。
通常時は、商用電源に接続された親機Aの電源回路7からCPU1及び音声制御部2へ電源が供給され、CPU1により切替スイッチ6が音声制御部2を選択するように設定される。子機Bの呼出スイッチ20が投入され、音声線12に接続される図示しない呼出検出回路からの出力をCPU1が認識すると、CPU1から表示部4の電源回路9にON信号が出力されて電源回路9が起動され、この電源回路9の起動に基づき電源回路7からの電源を表示部4内の各部に供給し、その電源供給を受けたCPU8が起動して表示部4が動作状態となる。そして、電源回路9から映像線13を介して子機Bの電源回路26へ電源が供給される。さらに、電源回路26から映像制御部17へ電源の供給が行われる。映像制御部17では、明るさセンサ29で検出された子機B周辺の明るさに基づき、選択的に照明用LED28が点灯されると共にCCDセンサ27で捉えた訪問者等の映像信号が変調回路25を介して映像線13上に出力される。映像線13の信号は、親機Aにおいて表示部4の復調回路11で復調され、これにより訪問者等の画像がLCD10に表示される。
【0012】
また、親機Aの通話部5と子機Bの通話部16との間で互いに通話が行われる。例えば、子機Bの通話部16のマイク24で捉えた訪問者等の音声は音声制御部15から音声信号として音声線12上に出力され、親機Aの切替スイッチ6を介して音声制御部2で受信された後、通話部5の図示しないスピーカで音声に復元される。同様に、親機Aの通話部5の図示しないマイクで捉えた音声は、音声制御部2から音声信号として音声線12上に出力され、子機Bの音声制御部15で受信され、通話部16のスピーカ23で音声に復元される。
【0013】
子機Bには図示しない火災感知器が接続されており、この火災感知器が火災の発生を検出すると、火災感知器から火災信号が出力され、子機Bは中継器として作用して、火災信号が音声線12、映像線13及び制御線14とは別の図示しない信号線を介して親機Aの図示しない受信回路に入力される。親機AのCPU1は、図示しない受信回路が火災信号を受けたことを認識すると、警報制御部3が選択されるように切替スイッチ6を切り替えると共に警報制御部3から予め設定されている警報のための音声信号を警報音として警報信号を音声線12上に送出させる。この警報信号は子機Bの音声制御部15で受信され、通話部16のスピーカ23から音声による警報音の鳴動がなされる。なお、この警報音の鳴動は、図示しない火災感知器による火災検出時に限らず、いわゆる住宅情報盤としての各種センサによるセキュリティ機能を親機Aが有する場合に、各種センサの異常検出時に行われる警報であってもよく、警報制御部3に予め各種センサに対応する警報音を音声信号として格納することによって選択的に警報を行うことができる。また、親機AのCPU1は制御線14を介して移報出力を子機Bの警報表示部18へ送出し、この移報出力に基づいて警報表示部18の警報表示灯30が点滅点灯する。
【0014】
また、警報表示の外部試験を行う際には、子機Bに図示しない外部試験器が接続される。外部試験器からの試験信号は図示しない信号線等を介して親機AのCPU1へ伝送され、試験信号を受信したCPU1は、警報制御部3による警報信号の送出を行って、移報出力を制御線14上に送出する。子機Bの警報表示部18は移報出力を受信し、警報表示灯30を点滅点灯させる。同時に、子機Bにおける通話部16にも、警報制御部3からの警報信号が出力され、スピーカ23により警報音の鳴動が行われる。このようにして、ドアの外側に配置されている子機Bに外部試験器を接続するだけで、屋内の親機Aを操作することなく、外部試験を行うことができる。
【0015】
停電時においては、商用電源から親機Aの電源回路7への電源供給が停止され、例えば管理室Cに設置されている非常用のバッテリ33から非常用電源が電源回路7へ供給される。親機AのCPU1は非常用電源の供給状態であることを認識し、子機Bの呼出スイッチ20の投入を受け付けない状態とされ、その結果、表示部4の電源回路9へOFF信号送出を継続する。これにより、表示部4の電源回路9が電源回路7から電源供給を受けることがなく、さらに電源回路9から映像線13を介した子機Bへの電源供給が禁止される。従って、親機Aの表示部4と子機Bの映像制御部17とによる映像機能は停止される。ここで、親機Aの通話部5と子機Bの通話部16との通話機能は利用可能としてよいが、非常電源としてのバッテリ33の容量は警報制御のために設計されるべきことから、映像機能と同様に通話機能も停止されるようにしてもよい。
【0016】
このような停電時でも、図示しない火災感知器が火災の発生を検出すると、火災感知器から出力された火災信号に基づいて、CPU1は、警報制御部3が選択されるように切替スイッチ6を切り替えると共に警報制御部3から警報信号を音声線12上に送出させる。この警報信号は子機Bの音声制御部15で受信され、通話部16のスピーカ23から警報音の鳴動がなされる。すなわち、停電時に子機Bへの電源供給がなされない場合でも、子機Bのスピーカ23から警報音を鳴動させることが可能となる。同時に、子機Bにおいて、音声制御部15が映像制御部17と電源的及び配線的に区別されていることから、映像線13の断線や電源回路26の不調等の映像機能についての不具合が生じても、警報音の鳴動が可能となる。
【0017】
【発明の効果】
以上説明したように、この発明によれば、子機と親機とを互いに接続する映像線と音声線とを別線で構成し、子機が映像制御部と音声制御部とを備えているので、停電時等には子機の映像制御部を停止状態とすることにより大きな電力を消費することなく、親機からの警報信号に基づいて子機から警報を鳴動させることが可能となる。
【図面の簡単な説明】
【図1】この発明の実施の形態に係るテレビドアホンの構成を示すブロック図である。
【符号の説明】
1,8 CPU、2,15 音声制御部、3 警報制御部、4 表示部、5,16 通話部、6 切替スイッチ、7,9,26 電源回路、10 LCD、11 復調回路、12 音声線、13 映像線、14 制御線、18 警報表示部、19 通電表示灯、20 呼出スイッチ、21 トランス、22 増幅回路、23 スピーカ、24 マイク、25 変調回路、27 CCDセンサ、28 照明用LED、29 明るさセンサ、30 警報表示灯、33 バッテリ、A 親機、B 子機。
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a video door phone, and more particularly to a video door phone that allows a telephone call between a child device and a parent device and displays an image captured by a camera of the child device on a display unit of the parent device.
[0002]
[Prior art]
Conventionally, a door phone that calls and talks between a slave unit located outside the door and a master unit indoors has been used, but a camera for shooting is attached to the slave unit and an image is displayed on the master unit. In addition to the calling and calling functions, a TV door phone that takes a picture of a visitor or the like with a camera of a child device and displays the image on the display portion of the parent device is being used (for example, Patent Document 1). 1).
[0003]
[Patent Document 1]
JP 10-243381 A
In this type of TV door phone, a master unit and a slave unit are connected to each other by a line for calling and talking, and power is supplied from the master unit to the slave unit via this line, and an audio signal and a video signal are superimposed. Then, transmission is performed between the master unit and the slave unit.
In recent years, a TV door phone having a function as an information panel for various information on disaster prevention and security has also been used, and an alarm can be issued from a master unit or a slave unit.
[0005]
[Problems to be solved by the invention]
However, the TV doorphone consumes a large amount of power not only for telephone calls but also for shooting with a camera. Even when a power failure occurs, for example, when emergency power is supplied to each unit from the emergency battery in the control room, the TV doorphone can be used. It is not preferable because large power is consumed. On the other hand, if the power of the TV door phone is cut off in such an emergency in order to reduce power consumption, it will not be possible to issue an alarm based on information on disaster prevention or security, which will cause trouble. .
The present invention has been made in order to solve such a problem, and an object of the present invention is to provide a television door phone that can sound an alarm without consuming large power at the time of a power failure or the like.
[0006]
[Means for Solving the Problems]
The video doorphone according to the present invention is a video doorphone in which a call is made between a telephone communication unit of the child device and a telephone communication unit of the parent device, and a video taken by the camera of the child device is displayed on the display unit of the parent device. The slave unit and the master unit are connected to each other through a video line and an audio line. The slave unit has a video control unit that sends a video signal obtained by a camera to the master unit through the video line, and a call between the slave unit and the slave unit. And a voice control unit that transmits and receives a voice signal from the calling unit of the base unit to and from the base unit via a voice line, and the base unit sends an alarm signal to the slave unit via the voice line at the time of an alarm, The audio control unit of the slave unit sounds an alarm sound from the calling unit of the slave unit based on an alarm signal received from the master unit via an audio line.
[0007]
The slave unit and the master unit are further connected to each other via a control line, and the master unit transmits a transfer output to the slave unit via the control line at the time of an alarm, and the alarm display unit of the slave unit is connected via the control line. It is preferable that the warning indicator be turned on based on the transfer output received from the master unit.
Furthermore, a connection terminal to which one or more fire detectors are connected may be installed in the slave unit, and a repeater function for inputting a fire signal from these fire detectors to the master unit via a signal line may be provided. it can.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 shows a configuration of a television door phone according to an embodiment of the present invention. The TV door phone includes a master unit A arranged indoors and a slave unit B arranged outside the door.
The master unit A has a CPU 1, and a voice control unit 2, an alarm control unit 3 and a display unit 4 are connected to the CPU 1, and a speech unit 5 is connected to the voice control unit 2. A changeover switch 6 that operates according to a command from the CPU 1 is connected to the voice control unit 2 and the alarm control unit 3. Furthermore, a power supply circuit 7 for supplying power to the CPU 1, the voice control unit 2, the alarm control unit 3, and the display unit 4 is connected to the master unit A, and the power supply circuit 7 is connected to a commercial power supply. The display unit 4 includes a CPU 8 for the display unit, a power supply circuit 9 connected to the CPU 8, an LCD 10 for displaying images, and a demodulation circuit 11 connected to the LCD 10. The communication unit 5 includes a speaker and a microphone (not shown).
[0009]
The audio line 12 is connected to the changeover switch 6, the video line 13 is connected to the display unit 4, and the control line 14 is connected to the CPU 1. The audio line 12, the video line 13 and the control line 14 are extended to the slave unit B. . Each of the audio line 12, the video line 13, and the control line 14 is provided as a pair of electric wires. However, one of the control lines 14 can be shared with one of the audio lines 12.
[0010]
On the other hand, the slave unit B has an audio control unit 15 connected to the audio line 12 and a call unit 16 connected to the audio control unit 15, and has a video control unit 17 connected to the video line 13, Further, an alarm display 18 connected to the control line 14 is provided.
The voice control unit 15 has a power indicator light 19, a call switch 20 and a transformer 21 connected to the voice line 12, respectively, and further has an amplifier circuit 22 connected to the transformer 21. The communication unit 16 includes a speaker 23 connected to the transformer 21 of the audio control unit 15 and a microphone 24 connected to the amplification circuit 22.
The image control unit 17 includes a modulation circuit 25 connected to the image line 13, a CCD sensor 27 connected to the modulation circuit 25 and used as a camera, an illumination LED 28, and a brightness sensor 29. The power supply circuit 26 supplies power to each part of the control unit 17.
The alarm display unit 18 has an alarm indicator light 30 and a connection terminal (not shown) for connecting at least one fire detector and a connection terminal for connecting an external tester. As a fire receiver, a fire signal from the fire detector is received via a signal line (not shown), and a signal for inspection can be transmitted and received between the fire detector and the external tester when it is connected. It has a repeater function to switch the route.
[0011]
Next, the operation of the TV door phone according to this embodiment will be described.
Normally, power is supplied from the power supply circuit 7 of the main unit A connected to the commercial power supply to the CPU 1 and the audio control unit 2, and the changeover switch 6 is set by the CPU 1 to select the audio control unit 2. When the call switch 20 of the slave unit B is turned on and the CPU 1 recognizes an output from a call detection circuit (not shown) connected to the audio line 12, an ON signal is output from the CPU 1 to the power circuit 9 of the display unit 4, and the power circuit 9 is started, the power from the power supply circuit 7 is supplied to each unit in the display unit 4 based on the activation of the power supply circuit 9, and the CPU 8 receiving the power supply is activated to put the display unit 4 into an operating state. Then, power is supplied from the power supply circuit 9 to the power supply circuit 26 of the slave unit B via the video line 13. Further, power is supplied from the power supply circuit 26 to the video control unit 17. The video controller 17 selectively illuminates the illumination LED 28 based on the brightness around the slave unit B detected by the brightness sensor 29 and also modulates a video signal of a visitor or the like captured by the CCD sensor 27. 25 and is output on the video line 13. The signal of the video line 13 is demodulated by the demodulation circuit 11 of the display unit 4 in the master unit A, whereby an image of a visitor or the like is displayed on the LCD 10.
[0012]
Further, a call is made between the communication unit 5 of the master unit A and the communication unit 16 of the slave unit B. For example, the voice of the visitor or the like captured by the microphone 24 of the communication unit 16 of the slave unit B is output as an audio signal from the audio control unit 15 onto the audio line 12, and is output via the changeover switch 6 of the master unit A. 2, the voice is restored to the voice by the speaker (not shown) of the communication unit 5. Similarly, the voice captured by the microphone (not shown) of the telephone unit 5 of the base unit A is output from the voice control unit 2 as a voice signal onto the voice line 12, received by the voice control unit 15 of the child device B, and The sound is restored by the 16 speakers 23.
[0013]
A fire sensor (not shown) is connected to the slave unit B. When the fire sensor detects the occurrence of a fire, a fire signal is output from the fire sensor, and the slave unit B acts as a repeater, causing a fire. The signal is input to a receiving circuit (not shown) of the base unit A via a signal line (not shown) different from the audio line 12, the video line 13, and the control line 14. When the CPU 1 of the master unit A recognizes that the receiving circuit (not shown) has received the fire signal, the CPU 1 switches the changeover switch 6 so that the alarm control unit 3 is selected, and outputs a preset alarm from the alarm control unit 3. An alarm signal is sent out on the audio line 12 using the audio signal for the alarm as an alarm sound. The alarm signal is received by the audio control unit 15 of the slave unit B, and the speaker 23 of the communication unit 16 emits an alarm sound by voice. The sounding of the alarm sound is not limited to the detection of a fire by a fire sensor (not shown), but may be performed when the base unit A has a security function using various sensors as a so-called house information panel, and when the abnormality is detected in the various sensors. Alternatively, an alarm can be selectively issued by previously storing alarm sounds corresponding to various sensors in the alarm control unit 3 as audio signals. Further, the CPU 1 of the master unit A sends a transfer output to the alarm display unit 18 of the slave unit B via the control line 14, and the alarm indicator lamp 30 of the alarm display unit 18 blinks based on the transfer output. .
[0014]
When performing an external test of the alarm display, an external tester (not shown) is connected to the slave unit B. The test signal from the external tester is transmitted to the CPU 1 of the master unit A via a signal line or the like (not shown), and the CPU 1 that has received the test signal transmits an alarm signal by the alarm control unit 3 and outputs a transfer output. Sends out on control line 14. The alarm display unit 18 of the slave unit B receives the transfer output, and causes the alarm indicator lamp 30 to blink. At the same time, the alarm signal from the alarm control unit 3 is also output to the communication unit 16 in the slave unit B, and the speaker 23 emits an alarm sound. In this way, an external test can be performed only by connecting the external tester to the slave unit B disposed outside the door without operating the indoor master unit A.
[0015]
In the event of a power outage, the power supply from the commercial power supply to the power supply circuit 7 of the master unit A is stopped, and the emergency power supply is supplied to the power supply circuit 7 from, for example, the emergency battery 33 installed in the management room C. The CPU 1 of the main unit A recognizes that the emergency power is supplied, and is set to a state in which the turning on of the call switch 20 of the sub unit B is not accepted. As a result, the OFF signal is transmitted to the power supply circuit 9 of the display unit 4. continue. Thus, the power supply circuit 9 of the display unit 4 does not receive power supply from the power supply circuit 7, and further, the power supply from the power supply circuit 9 to the slave unit B via the video line 13 is prohibited. Therefore, the video functions of the display unit 4 of the parent device A and the video control unit 17 of the child device B are stopped. Here, the communication function between the communication unit 5 of the master unit A and the communication unit 16 of the slave unit B may be available, but since the capacity of the battery 33 as an emergency power source should be designed for alarm control, The call function may be stopped as well as the video function.
[0016]
Even during such a power failure, when a fire sensor (not shown) detects the occurrence of a fire, the CPU 1 operates the changeover switch 6 based on the fire signal output from the fire sensor so that the alarm control unit 3 is selected. At the same time, the alarm control unit 3 causes the alarm signal to be transmitted on the audio line 12. This alarm signal is received by the audio control unit 15 of the slave unit B, and an alarm sound is emitted from the speaker 23 of the communication unit 16. That is, even when power is not supplied to the slave unit B at the time of the power failure, the alarm sound can be sounded from the speaker 23 of the slave unit B. At the same time, in the slave unit B, since the audio control unit 15 is distinguished from the video control unit 17 in terms of power supply and wiring, a defect in the video function such as disconnection of the video line 13 or malfunction of the power supply circuit 26 occurs. However, it is possible to sound an alarm sound.
[0017]
【The invention's effect】
As described above, according to the present invention, the video line and the audio line that connect the slave unit and the master unit to each other are configured as separate lines, and the slave unit includes the video control unit and the audio control unit. Therefore, by stopping the video control unit of the slave unit at the time of a power failure or the like, the slave unit can sound an alarm based on the alarm signal from the master unit without consuming large power.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a television doorphone according to an embodiment of the present invention.
[Explanation of symbols]
1,8 CPU, 2,15 voice control unit, 3 alarm control unit, 4 display unit, 5,16 communication unit, 6 changeover switch, 7,9,26 power supply circuit, 10 LCD, 11 demodulation circuit, 12 voice line, 13 video line, 14 control line, 18 alarm display section, 19 energization indicator light, 20 call switch, 21 transformer, 22 amplifier circuit, 23 speaker, 24 microphone, 25 modulation circuit, 27 CCD sensor, 28 lighting LED, 29 brightness Sensor, 30 alarm indicator, 33 battery, A master unit, B slave unit.

Claims (3)

子機の通話部と親機の通話部との間で通話がなされると共に子機のカメラで撮影された映像を親機の表示部で表示するテレビドアホンにおいて、
子機と親機とが映像線及び音声線を介して互いに接続され、
子機は、前記カメラにより得られた映像信号を前記映像線を介して親機へ送出する映像制御部と、子機の通話部及び親機の通話部による音声信号を前記音声線を介して親機との間で送受信する音声制御部とを備え、
親機は警報時に前記音声線を介して警報信号を子機へ送出し、
子機の前記音声制御部は前記音声線を介して親機から受信した警報信号に基づいて子機の通話部から警報音を鳴動させることを特徴とするテレビドアホン。
In a video door phone in which a call is made between the calling unit of the slave unit and the calling unit of the master unit and an image captured by the camera of the slave unit is displayed on the display unit of the master unit,
The slave unit and the master unit are connected to each other via a video line and an audio line,
The slave unit transmits a video signal obtained by the camera to the master unit via the video line, and a voice signal from a calling unit of the slave unit and a calling unit of the master unit via the audio line. A voice control unit for transmitting and receiving to and from the base unit,
The master unit sends an alarm signal to the slave unit via the audio line at the time of an alarm,
A video door phone, wherein the audio control unit of the slave unit sounds an alarm sound from the calling unit of the slave unit based on an alarm signal received from the master unit via the audio line.
子機と親機とがさらに制御線を介して互いに接続され、
親機は警報時に前記制御線を介して移報出力を子機へ送出し、
子機は、前記制御線を介して親機から受信した移報出力に基づいて警報表示灯を点灯させる警報表示部を有する請求項1に記載のテレビドアホン。
The slave unit and the master unit are further connected to each other via a control line,
The master unit sends a transfer output to the slave unit via the control line at the time of an alarm,
The television doorphone according to claim 1, wherein the slave unit has an alarm display unit that turns on an alarm indicator lamp based on a transfer output received from the master unit via the control line.
子機は、1または複数の火災感知器が接続される接続端子を有すると共にこれらの火災感知器からの火災信号を信号線を介して親機へ入力させる中継器機能を有する請求項2に記載のテレビドアホン。3. The slave unit according to claim 2, wherein the slave unit has a connection terminal to which one or a plurality of fire detectors are connected, and has a repeater function of inputting a fire signal from these fire detectors to the master unit via a signal line. TV door phone.
JP2002283676A 2002-09-27 2002-09-27 TV door phone Expired - Fee Related JP4187493B2 (en)

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Cited By (6)

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US7552801B2 (en) 2004-09-27 2009-06-30 Electronics Micro Systems, Inc. Elevator systems having display systems with pluralities of sequentially connected monitor units
CN105652213A (en) * 2016-02-22 2016-06-08 昆山市诚泰电气股份有限公司 Prompt system for low power of battery of emergency power supply
JP2020150431A (en) * 2019-03-14 2020-09-17 パナソニックIpマネジメント株式会社 Information terminal, interphone entrance slave machine, and interphone system
JP2020150467A (en) * 2019-03-14 2020-09-17 パナソニックIpマネジメント株式会社 Information terminal, interphone entrance slave machine, and interphone system
JP2020150435A (en) * 2019-03-14 2020-09-17 パナソニックIpマネジメント株式会社 Information terminal, intercom entrance slave unit, and intercom system
JP7474944B2 (en) 2019-03-14 2024-04-26 パナソニックIpマネジメント株式会社 Information terminal and intercom system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7552801B2 (en) 2004-09-27 2009-06-30 Electronics Micro Systems, Inc. Elevator systems having display systems with pluralities of sequentially connected monitor units
CN105652213A (en) * 2016-02-22 2016-06-08 昆山市诚泰电气股份有限公司 Prompt system for low power of battery of emergency power supply
JP2020150431A (en) * 2019-03-14 2020-09-17 パナソニックIpマネジメント株式会社 Information terminal, interphone entrance slave machine, and interphone system
JP2020150467A (en) * 2019-03-14 2020-09-17 パナソニックIpマネジメント株式会社 Information terminal, interphone entrance slave machine, and interphone system
JP2020150435A (en) * 2019-03-14 2020-09-17 パナソニックIpマネジメント株式会社 Information terminal, intercom entrance slave unit, and intercom system
JP7285476B2 (en) 2019-03-14 2023-06-02 パナソニックIpマネジメント株式会社 Information terminal, intercom entrance handset and intercom system
JP7285475B2 (en) 2019-03-14 2023-06-02 パナソニックIpマネジメント株式会社 Information terminal, intercom entrance handset and intercom system
JP7474944B2 (en) 2019-03-14 2024-04-26 パナソニックIpマネジメント株式会社 Information terminal and intercom system

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