JPH09154128A - Video interphone set - Google Patents
Video interphone setInfo
- Publication number
- JPH09154128A JPH09154128A JP31107295A JP31107295A JPH09154128A JP H09154128 A JPH09154128 A JP H09154128A JP 31107295 A JP31107295 A JP 31107295A JP 31107295 A JP31107295 A JP 31107295A JP H09154128 A JPH09154128 A JP H09154128A
- Authority
- JP
- Japan
- Prior art keywords
- call
- camera
- circuit
- slave
- entrance
- 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.)
- Granted
Links
Landscapes
- Closed-Circuit Television Systems (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明はカメラ付玄関子機
およびカメラ無玄関子機が混在するテレビインターホン
装置に関し、特に適切な呼出ができるテレビインターホ
ン装置に係わる。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television intercom apparatus in which a front door subunit with a camera and a non-camera front door subunit are mixed, and more particularly to a TV intercom apparatus capable of making an appropriate call.
【０００２】[0002]
【従来の技術】従来から、図３に示すテレビインターホ
ン装置が知られている。このテレビインターホン装置
は、カメラ無玄関子機Ｓ11およびカメラ付玄関子機Ｓ12
が混在した複数の子機Ｓ11〜Ｓ1nと、玄関子機接続アダ
プタ５１と、選局釦Ｂｔ31〜Ｂｔ3nを備えた親機Ｍ
11と、テレビモニタＭ12とで構成され、カメラ無玄関子
機またはカメラ付玄関子機Ｓ11〜Ｓ1nはそれぞれライン
Ｌ21〜Ｌ2nを介して玄関子機接続アダプタ５１に接続さ
れる。2. Description of the Related Art Conventionally, a television intercom device shown in FIG. 3 is known. This TV intercom device is provided with a camera-less front door subunit S 11 and a camera-mounted front door subunit S 12
A master unit M including a plurality of slave units S 11 to S 1n mixed with each other, an entrance slave unit connection adapter 51, and tuning buttons Bt 31 to Bt 3n.
11, is composed of a television monitor M 12, the camera-free entrance door station or entrance door station S 11 to S 1n with a camera are connected via a line L 21 ~L 2n to the entrance door station connecting adapter 51.
【０００３】玄関子機接続アダプタ５１は、選局検出回
路５２と、親機呼出回路５３と、ＣＰＵ５４と、カメラ
付玄関子機電源回路５５と、識別回路５６と、しきい値
電圧発生回路５７と、それぞれの子機Ｓ11〜Ｓ1nに対応
した呼出検出用コンパレータZ1〜Znを有する呼出検出回
路５８と、リレー駆動ライン５９と、通話切替回路６０
と、親機−玄関子機通話アンプ６１と、カメラ付玄関子
機通話アンプ６２と、子機ライン切替制御回路６３とが
設けられ、親機Ｍ11とテレビモニタＭ12が接続されてい
る。The entrance slave unit connection adapter 51 includes a channel selection detection circuit 52, a master unit calling circuit 53, a CPU 54, a camera-equipped entrance slave unit power supply circuit 55, an identification circuit 56, and a threshold voltage generation circuit 57. And a call detection circuit 58 having call detection comparators Z 1 to Z n corresponding to the respective slaves S 11 to S 1n , a relay drive line 59, and a call switching circuit 60.
, A main unit-entrance sub unit call amplifier 61, a camera-equipped front sub unit call amplifier 62, and a sub unit line switching control circuit 63 are provided, and the main unit M 11 and the television monitor M 12 are connected.
【０００４】ラインＬ21〜Ｌ2nに接続された複数の子機
Ｓ11〜Ｓ1nは子機ライン切替制御回路６３に接続され、
子機ライン切替制御回路６３は、しきい値電圧発生回路
５７と接続された呼出検出用コンパレータZ1〜Znを有す
る呼出検出回路５８を介してＣＰＵ５４と接続されてい
る。ＣＰＵ５４の制御出力側は、リレー駆動ライン５９
と、通話切替回路６０を介して子機ライン切替制御回路
６３と、親機呼出回路５３、ラインＬ31〜Ｌ3nを介して
親機Ｍ11とに接続されている。ＣＰＵ５４の制御入力側
は選局検出回路５２に接続され、選局検出回路５２の他
方はラインＬ31〜Ｌ3nを介して親機Ｍ11と接続されてい
る。ＣＰＵ５４はカメラ付玄関子機電源回路５５、コイ
ルＫ11、Ｋ12、コンデンサＣ11、Ｃ12、ラインＢ2を介
してテレビモニタＭ12に接続されている。識別回路５６
は一方が子機ライン切替制御回路６３に接続され、他方
がＣＰＵ５４に接続されている。A plurality of slave units S 11 to S 1n connected to the lines L 21 to L 2n are connected to a slave unit line switching control circuit 63,
The cordless handset line switching control circuit 63 is connected to the CPU 54 via the call detection circuit 58 having the call detection comparators Z 1 to Z n connected to the threshold voltage generation circuit 57. The control output side of the CPU 54 is the relay drive line 59.
Are connected to the child device line switching control circuit 63 via the call switching circuit 60, and to the parent device M 11 via the parent device calling circuit 53 and lines L 31 to L 3n . The control input side of the CPU 54 is connected to the channel selection detection circuit 52, and the other side of the channel selection detection circuit 52 is connected to the parent device M 11 via lines L 31 to L 3n . The CPU 54 is connected to the television monitor M 12 via the camera-equipped front-panel subunit power supply circuit 55, the coils K 11 , K 12 , capacitors C 11 , C 12 , and the line B 2 . Identification circuit 56
One is connected to the slave unit line switching control circuit 63, and the other is connected to the CPU 54.
【０００５】通話切替回路６０は親機−子機通話アンプ
６１とカメラ付玄関子機通話アンプ６２に接続され、親
機−子機通話アンプ６１はラインＬS2を介して親機Ｍ11
に接続されている。カメラ付玄関子機通話アンプ６２
は、コイルＫ11、Ｋ12に接続され、コイルＫ11とコンデ
ンサＣ11、コイルＫ12とコンデンサＣ12の接続点には子
機ライン切替制御回路６３が接続されている。The call switching circuit 60 is connected to a master-slave communication amplifier 61 and a camera-equipped front-slave communication amplifier 62, and the master-slave communication amplifier 61 connects the master M 11 via a line L S2.
It is connected to the. Entrance cordless handset with camera 62
Is connected to the coil K 11, K 12, coil K 11 and capacitor C 11, handset line switching control circuit 63 to the connection point of the coil K 12 and capacitor C 12 is connected.
【０００６】このように構成されたテレビインターホン
装置において、電源投入時の初期設定時は、玄関子機接
続アダプタ５１のＣＰＵ５４より、識別回路５６、子機
ライン切替制御回路６３を動作させて、玄関子機接続ア
ダプタ５１に接続されている複数の子機Ｓ11〜Ｓ1nがカ
メラ無玄関子機またはカメラ付玄関子機かを識別回路５
６で識別して、ＣＰＵ５４に記憶させる。In the television intercom apparatus configured as described above, at the time of initial setting when the power is turned on, the CPU 54 of the entrance slave unit connection adapter 51 causes the identification circuit 56 and the slave unit line switching control circuit 63 to operate to enter the entrance. The identification circuit 5 identifies whether the plurality of slave units S 11 to S 1n connected to the slave unit connection adapter 51 are the camera-less front-door subunit or the camera-equipped front subunit.
It is identified by 6, and is stored in the CPU 54.
【０００７】初期設定終了後、カメラ付玄関子機Ｓ12か
ら親機Ｍ11が呼出された場合、玄関子機接続アダプタ５
１の子機ライン切替制御回路６３より呼出検出回路５８
のカメラ付玄関子機Ｓ12に対応する呼出検出用コンパレ
ータZ2に入力される電圧はカメラ付玄関子機呼出電圧に
低下する。呼出検出用コンパレータZ2は、しきい値電圧
発生回路５７で発生させている呼出検出用しきい値電圧
より子機ライン切替制御回路６３から入力される電圧が
下まわったのを検出して、ＣＰＵ５４へ呼出があったこ
とを知らせる。ＣＰＵ５４はカメラ付玄関子機Ｓ12から
呼出があったことを知ると、親機呼出回路５３を動作さ
せ、ラインＬ31〜Ｌ3nのＬ32を介して親機Ｍ11に呼出が
あったことを知らせる。また、カメラ無玄関子機Ｓ11が
親機Ｍ11を呼出した場合も、子機ライン切替制御回路６
３より呼出検出用コンパレータZ1に入力される電圧がカ
メラ無玄関子機呼出電圧に低下する。これにより呼出を
検出し、同様の経路でラインＬ31を介し親機Ｍ11を呼出
す。このときカメラ付玄関子機呼出電圧とカメラ無玄関
子機呼出電圧の関係は、カメラ付玄関子機呼出電圧＞カ
メラ無玄関子機呼出電圧である。After the initial setting is completed, when the master unit M 11 is called from the camera-equipped entrance subunit S 12 , the entry subunit connection adapter 5
Call detection circuit 58 from the slave unit line switching control circuit 63 of No. 1
The voltage input to the call detection comparator Z 2 corresponding to the camera-equipped front cordless handset S 12 drops to the camera-equipped front cordless handset ringing voltage. The call detection comparator Z 2 detects that the voltage input from the slave line switching control circuit 63 is lower than the call detection threshold voltage generated by the threshold voltage generation circuit 57, Notify the CPU 54 that there is a call. When the CPU 54 knows that there is a call from the camera-equipped front-end device S 12 , it activates the base-unit calling circuit 53 to notify that there is a call to the base device M 11 via L 32 of lines L 31 to L 3n. Let me know. In addition, when the camera-less front door slave S 11 calls the master M 11 , the slave line switching control circuit 6
From 3, the voltage input to the call detection comparator Z 1 is reduced to the ringing voltage of the camera-less front door. As a result, a call is detected, and the parent device M 11 is called via the line L 31 on the same route. At this time, the relationship between the calling voltage of the front door subunit with camera and the calling voltage of the non-camera front gateway device is the calling voltage of the front door subunit with camera> the calling voltage of the non-camera front gateway device.
【０００８】カメラ付玄関子機Ｓ12からの呼出に応じ、
親機Ｍ11側で選局釦Ｂｔ32が押下され、カメラ付玄関子
機Ｓ12が選局されたときは、玄関子機接続アダプタ５１
の選局検出回路５２を介してＣＰＵ５４からカメラ付玄
関子機電源回路５５を動作させ、子機ライン切替制御回
路６３、ラインＬ22を介してカメラ付玄関子機Ｓ12へカ
メラ電源を供給する。カメラ付玄関子機Ｓ12からの音声
信号は、子機ライン切替制御回路６３→カメラ付玄関子
機通話アンプ６２→通話切替回路６０→親機−子機通話
アンプ６１→ラインＬS2の経路で親機Ｍ11に送出され、
親機Ｍ11とカメラ付玄関子機Ｓ12の通話が可能となる。
また、映像信号は子機ライン切替制御回路６３、ライン
Ｂ2を介してテレビモニタＭ12へ送出され、映像がモニ
タされる。In response to a call from the front door subunit S 12 with a camera,
When the channel selection button Bt 32 is pressed on the side of the main unit M 11 and the front door subunit S 12 with camera is selected, the front door subunit connection adapter 51
The CPU 54 operates the camera-equipped front-door subunit power supply circuit 55 through the channel selection detection circuit 52, and supplies the camera power to the front-door subunit S 12 with camera via the slave-unit line switching control circuit 63 and line L 22. . The voice signal from the camera-equipped front-end cordless handset S 12 is routed through the cordless handset line-switch control circuit 63, the camera-equipped front-hand cordless handset call amplifier 62, the call-switching circuit 60, the main unit-handset voice call amplifier 61, and the line L S2 . Sent to the base unit M 11 ,
Calls can be made between the master device M 11 and the entrance device with camera S 12 .
Further, the video signal is sent to the television monitor M 12 via the slave unit line switching control circuit 63 and the line B 2 , and the video is monitored.
【０００９】カメラ無玄関子機Ｓ11からの呼出に応じ、
親機Ｍ11側で選局釦Ｂｔ31が押下され、カメラ無玄関子
機Ｓ11が選局されたときは、玄関子機接続アダプタ５１
の選局検出回路５２を介してＣＰＵ５４から通話切替回
路６０を動作させる。カメラ無玄関子機Ｓ11からの音声
信号は、子機ライン切替制御回路６３→通話切替回路６
０→親機−子機通話アンプ６１の経路で送出され、親機
Ｍ11とカメラ無玄関子機Ｓ11の通話が可能となる。（カ
メラ無玄関子機Ｓ11が接続された場合は、テレビモニタ
Ｍ12はモニタされない）In response to a call from the cameraless front-end device S 11 ,
When the tuning button Bt 31 is pressed on the side of the master unit M 11 and the camera-less front door subunit S 11 is selected, the gateway subunit connection adapter 51
The CPU 54 operates the call switching circuit 60 via the channel selection detection circuit 52. The voice signal from the camera-less front-end handset S 11 is a handset line switching control circuit 63 → call switching circuit 6
It is sent out from the route of 0 → main unit-slave unit call amplifier 61, and the call between the master unit M 11 and the cameraless front-end unit S 11 becomes possible. (The TV monitor M 12 is not monitored when the camera-less front door subunit S 11 is connected.)
【００１０】[0010]
【発明が解決しようとする課題】このようなテレビイン
ターホン装置では、カメラ無玄関子機は夜間表示灯（図
示せず）を点灯させるための電流がカメラ無玄関子機の
マイクアンプに若干流れているため、待受時中に過大音
声が入力されるとカメラ無玄関子機が電流を消費し、子
機ライン切替制御回路より呼出検出用コンパレータに入
力される電圧がカメラ付玄関子機呼出電圧と同じ電圧ま
で下がる。しかし、呼出検出用しきい値電圧をカメラ付
玄関子機とカメラ無玄関子機とも共通であるため、カメ
ラ無玄関子機のマイクに過大音声が入力されると子機ラ
イン切替制御回路より呼出検出用コンパレータに入力さ
れる電圧がしきい値電圧を下まわり、呼出をかけていな
いにもかかわらず親機に対して誤呼出をかけてしまうと
いう難点があった。In such a TV intercom apparatus, a current for lighting the night indicator lamp (not shown) of the camera-less front door handset slightly flows to the microphone amplifier of the camera-free front handset. Therefore, if excessive sound is input during standby, the camera-less front door handset consumes current, and the voltage input to the call detection comparator from the handset line switching control circuit is the front door handset with camera ringing voltage. To the same voltage as. However, the threshold voltage for call detection is common to both the front door with camera and the front door without camera, so if an excessive voice is input to the microphone of the front door without camera, the line switching control circuit of the handset calls. The voltage input to the detection comparator is lower than the threshold voltage, and there is a problem in that the parent device is erroneously called even if the calling is not made.
【００１１】本発明はこのような難点を解決するため
に、カメラ付玄関子機の呼出検出用しきい値電圧とカメ
ラ無玄関子機の呼出検出用しきい値電圧をそれぞれ交互
に発生させるしきい値電圧発生回路を備えたので、カメ
ラ付玄関子機呼出電圧が入力されるカメラ付玄関子機お
よびカメラ無玄関子機呼出電圧が入力されるカメラ無玄
関子機が混在した場合でも過大音声の入力に対応できる
テレビインターホン装置を提供することを目的としてい
る。In order to solve such a problem, the present invention alternately generates a threshold voltage for call detection of a front door unit with a camera and a threshold voltage for call detection of a front unit without a camera. Since the threshold voltage generation circuit is provided, even if there is a combination of a camera-equipped front cordless handset with a camera-equipped front cordless handset and a non-camera-entranced cordless handset with a camera-free front-entrance cordless handset It is an object of the present invention to provide a television intercom device that can handle the input of.
【００１２】[0012]
【課題を解決するための手段】前述した目的を達成する
ため、本発明によるテレビインターホン装置は、カメラ
無玄関子機およびカメラ付玄関子機が混在した複数の子
機と、複数の子機にラインを介して接続された玄関子機
接続アダプタと、玄関子機接続アダプタに接続された親
機とを有し、玄関子機接続アダプタは、カメラ付玄関子
機からの呼出検出用しきい値電圧およびカメラ無玄関子
機からの呼出検出用しきい値電圧を交互に発生するしき
い値電圧発生回路と、複数の子機のそれぞれに接続され
カメラ付玄関子機からの呼出検出用しきい値電圧および
カメラ無玄関子機からの呼出検出用しきい値電圧より低
圧の電圧を両しきい値電圧の発生タイミングに同期して
それぞれ検出したときカメラ付玄関子機、カメラ無玄関
子機からの呼出と判断する呼出検出回路とを備えた。In order to achieve the above-mentioned object, a television intercom apparatus according to the present invention has a plurality of slave units in which a camera-less front door subunit and a camera-equipped front subunit are mixed, and a plurality of slave units. It has an entrance cordless handset connection adapter connected via a line and a master unit connected to the entrance cordless handset connection adapter, and the entrance cordless handset connection adapter is a threshold value for detecting a call from the entrance cordless handset with a camera. Threshold voltage generation circuit that alternately generates the voltage and the threshold voltage for detecting a call from a camera-less front-end device, and a threshold for detecting a call from a front-door unit with a camera connected to each of a plurality of handset devices. When a voltage lower than the value voltage and the threshold voltage for detecting a call from the camera-less front door is detected in synchronization with the generation timing of both threshold voltages, respectively. Call of And a call detection circuit for disconnection.
【００１３】このように、玄関子機接続アダプタにカメ
ラ付玄関子機からの呼出検出用しきい値電圧およびカメ
ラ無玄関子機からの呼出検出用しきい値電圧を交互に発
生するしきい値電圧発生回路を備えたので、カメラ付玄
関子機呼出電圧が入力されるカメラ付玄関子機およびカ
メラ無玄関子機呼出電圧が入力されるカメラ無玄関子機
が混在した場合でも過大音声の入力に対応できる。As described above, the threshold value for alternately generating the threshold voltage for detecting a call from the front subunit with a camera and the threshold voltage for detecting a call from the front subunit without a camera in the front subunit connecting adapter Since it has a voltage generation circuit, even if there is a combination of a camera-equipped front cordless handset that inputs a camera-equipped front cordless handset and a camera-less front door cordless handset that inputs a camera-less front-entry handset, the excessive voice input Can handle.
【００１４】[0014]
【発明の実施の形態】以下、本発明によるテレビインタ
ーホン装置の好ましい一実施例を示す図面を参照して詳
述する。図１に示すような本発明によるテレビインター
ホン装置は、カメラ無玄関子機Ｓ1およびカメラ付玄関
子機Ｓ2が混在した複数の子機Ｓ1〜Ｓnと、複数の子機
Ｓ1〜ＳnにラインＬ1〜Ｌnを介して接続された玄関子機
接続アダプタ１と、玄関子機接続アダプタ１に接続さ
れ、選局釦Ｂｔ1〜Ｂｔnを備えた親機Ｍ1およびテレビ
モニタＭ2とを有する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of a television intercom apparatus according to the present invention will be described in detail with reference to the drawings. A television intercom apparatus according to the present invention as shown in FIG. 1 includes a plurality of slave units S 1 to S n in which a camera-less front-door subunit S 1 and a camera-equipped front subunit S 2 are mixed, and a plurality of slave units S 1 to S. An entrance slave device connection adapter 1 connected to n via lines L 1 to L n, and a master device M 1 connected to the entrance slave device connection adapter 1 and provided with tuning buttons Bt 1 to Bt n and a television monitor And M 2 .
【００１５】玄関子機接続アダプタ１は、選局検出回路
２と、親機呼出回路３と、ＣＰＵ４と、カメラ付玄関子
機電源回路５と、識別回路６と、カメラ付玄関子機Ｓ2
からの呼出検出用しきい値電圧およびカメラ無玄関子機
Ｓ1からの呼出検出用しきい値電圧を交互に発生するし
きい値電圧発生回路７と、複数の子機Ｓ1〜Ｓnのそれぞ
れに接続されカメラ付玄関子機Ｓ2からの呼出検出用し
きい値電圧およびカメラ無玄関子機Ｓ1からの呼出検出
用しきい値電圧より低圧の電圧を両しきい値電圧の発生
タイミングに同期してそれぞれ検出したときカメラ付玄
関子機Ｓ2、カメラ無玄関子機Ｓ1からの呼出と判断する
呼出検出回路８と、リレー駆動ライン９と、通話切替回
路１０と、親機−子機通話アンプ１１と、カメラ付玄関
子機通話アンプ１２と、子機ライン切替制御回路１３と
を備えている。The entrance slave device connection adapter 1 includes a channel selection detection circuit 2, a master device calling circuit 3, a CPU 4, a camera entrance slave device power supply circuit 5, an identification circuit 6, and a camera entrance slave device S 2.
Of the threshold voltage for calling detection from the slave unit S 1 without a camera and a threshold voltage generating circuit 7 for alternately generating the threshold voltage for detecting a call from the camera-less front door slave unit S 1 and a plurality of slave units S 1 to S n . Timings of generation of both threshold voltages are lower than the threshold voltage for call detection from the front door subunit S 2 with camera and the threshold voltage for call detection from the front door subunit S 1 without camera. , A call detection circuit 8 which determines that a call is made from the front door subunit S 2 with a camera or the front door subunit S 1 without a camera, a relay drive line 9, a call switching circuit 10, and a base unit- It is provided with a handset call amplifier 11, a camera-equipped front handset call amplifier 12, and a handset line switching control circuit 13.
【００１６】ＣＰＵ４は、カメラ付玄関子機電源制御４
０、選局検出制御４１、親機呼出制御４２、識別回路制
御４３、メモリ４４、しきい値可変制御４５、呼出検出
制御４６、子機ライン切替制御４７、通話切替制御４８
を有する。親機Ｍ1はラインＬ11〜Ｌ1n、選局検出回路
２を介してＣＰＵ４の選局検出制御４１に接続され、Ｃ
ＰＵ４の親機呼出制御４２に接続されている親機呼出回
路３はラインＬ11〜Ｌ1nに接続されている。The CPU 4 is a power supply control unit 4 for a front door subunit with a camera.
0, channel selection detection control 41, parent device call control 42, identification circuit control 43, memory 44, threshold value variable control 45, call detection control 46, child device line switching control 47, call switching control 48
Having. The master unit M 1 is connected to the tuning detection control 41 of the CPU 4 via the lines L 11 to L 1n and the tuning detection circuit 2, and C
The master call circuit 3 connected to the master call control 42 of the PU 4 is connected to the lines L 11 to L 1n .
【００１７】ＣＰＵ４のカメラ付玄関子機電源制御４０
はカメラ付玄関子機電源回路５、コイルＫ1、Ｋ2、コン
デンサＣ1、Ｃ2、ラインＢ1を介してテレビモニタＭ2と
接続され、またＣＰＵ４の選局検出制御４１、親機呼出
制御４２、しきい値可変制御４５、呼出検出制御４６、
子機ライン切替制御４７および通話切替制御４８に接続
されている。ＣＰＵ４の通話切替制御４８は通話切替回
路１０を介して子機ライン切替制御回路１３と接続さ
れ、子機ライン切替制御４７はリレー駆動ライン９を介
して子機ライン切替制御回路１３と接続されている。CPU 4 power supply control 40 for entrance door with camera
Is connected to the television monitor M 2 through the power supply circuit 5 of the entrance slave unit with camera, the coils K 1 and K 2 , the capacitors C 1 and C 2 , and the line B 1 , and the channel selection detection control 41 of the CPU 4 and the calling of the parent device. Control 42, threshold variable control 45, call detection control 46,
It is connected to the cordless handset line switching control 47 and the call switching control 48. The call switching control 48 of the CPU 4 is connected to the child device line switching control circuit 13 via the call switching circuit 10, and the child device line switching control 47 is connected to the child device line switching control circuit 13 via the relay drive line 9. There is.
【００１８】通話切替回路１０は親機−子機通話アンプ
１１およびカメラ付玄関子機通話アンプ１２に接続さ
れ、親機−子機通話アンプ１１はラインＬs1を介して親
機Ｍ1に接続されている。カメラ付玄関子機通話アンプ
１２は、コイルＫ1、Ｋ2に接続され、コイルＫ1とコン
デンサＣ1、コイルＫ2とコンデンサＣ2の接続点には子
機ライン切替制御回路１３が接続されている。The call switching circuit 10 is connected to a master-slave communication amplifier 11 and a camera-equipped front-slave communication amplifier 12, and the master-slave communication amplifier 11 is connected to a master M 1 via a line L s1. Has been done. Entrance door station call amplifier 12 with a camera is connected to the coil K 1, K 2, coil K 1 and the capacitor C 1, handset line switching control circuit 13 is connected to a connection point of the coil K 2 and the capacitor C 2 ing.
【００１９】ＣＰＵ４の識別回路制御４３は子機ライン
切替制御回路１３に接続された識別回路６と接続され、
またメモリ４４を介して呼出検出制御４６および子機ラ
イン切替制御４７に接続されている。ＣＰＵ４のしきい
値可変制御４５に接続されたしきい値電圧発生回路７は
呼出検出回路８と接続され、子機ライン切替制御回路１
３に接続された呼出検出回路８は呼出検出制御４６に接
続されている。The identification circuit control 43 of the CPU 4 is connected to the identification circuit 6 connected to the slave unit line switching control circuit 13,
Further, it is connected to the call detection control 46 and the handset line switching control 47 via the memory 44. The threshold voltage generation circuit 7 connected to the threshold variable control 45 of the CPU 4 is connected to the call detection circuit 8, and the slave unit line switching control circuit 1
The call detection circuit 8 connected to 3 is connected to the call detection control 46.
【００２０】このように構成された本発明によるテレビ
インターホン装置は、電源投入時の初期設定時には、玄
関子機接続アダプタ１のＣＰＵ４の識別回路制御４３、
子機ライン切替制御４７を動作させ、複数の子機Ｓ1〜
Ｓnについて子機ライン切替制御回路１３を介して識別
回路６で、カメラ付玄関子機かカメラ無玄関子機かを識
別し、どこに接続されている子機がカメラ付玄関子機ま
たはカメラ無玄関子機かをＣＰＵ４のメモリ４４に記憶
させておく。In the television intercom apparatus according to the present invention thus constructed, the identification circuit control 43 of the CPU 4 of the entrance cordless handset connection adapter 1 is set at the time of initial setting when the power is turned on.
By operating the slave unit line switching control 47, a plurality of slave units S 1 to
With respect to S n , the identification circuit 6 is used to identify the camera-equipped front cordless handset or the camera-free front-hand cordless handset through the cordless handset line switching control circuit 13, and where the connected cordless handset is the camera-equipped front-hand cordless handset or the camera-less handset. It is stored in the memory 44 of the CPU 4 as to whether it is an entrance slave.
【００２１】初期設定終了後、子機Ｓ1〜Ｓnの呼出検出
はＣＰＵ４の呼出検出制御４６、しきい値可変制御４５
により、しきい値電圧発生回路７でカメラ付玄関子機お
よびカメラ無玄関子機の呼出検出用しきい値電圧を交互
に発生させる。例えば図２に示すようにカメラ無玄関子
機Ｓ1の呼出検出をする場合は、しきい値電圧発生回路
７がマイク過大入力時に子機ライン切替制御回路１３か
ら呼出検出回路８に入力される電圧より低いカメラ無玄
関子機呼出検出用のしきい値を呼出検出回路８に出力す
る。このカメラ無玄関子機呼出検出用のしきい値が出力
されているとき、呼出検出制御４６は呼出検出回路８の
出力を読み取る。呼出検出制御４６が読み取りを行った
とき、カメラ無玄関子機Ｓ1から呼出がなされ、子機ラ
イン切替制御回路１３から呼出検出回路８に入力される
電圧がカメラ無玄関子機呼出検出用のしきい値電圧より
低くなると呼出検出回路８の出力電圧がＬレベルとな
り、カメラ無玄関子機Ｓ1の呼出として呼出検出制御４
６は判断するため、従来のようなマイク過大入力による
誤呼出はしない。After the completion of the initial setting, the call detection of the slave units S 1 to S n is performed by the CPU 4 by the call detection control 46 and the threshold variable control 45.
Thus, the threshold voltage generation circuit 7 alternately generates the threshold voltage for calling detection of the front door subunit with a camera and the front door subunit without a camera. For example, as shown in FIG. 2, when the calling of the camera-less front door handset S 1 is detected, the threshold voltage generation circuit 7 is input from the handset line switching control circuit 13 to the call detection circuit 8 when the microphone is excessively input. The threshold value for detecting the call of the camera-less front door handset lower than the voltage is output to the call detection circuit 8. When the threshold value for detecting the call of the camera-less front door handset is output, the call detection control 46 reads the output of the call detection circuit 8. When the call detection control 46 performs reading, a call is made from the camera-less front door handset S 1 and the voltage input from the handset line switching control circuit 13 to the call detection circuit 8 is used for detecting a camera-free front handset call. When the voltage becomes lower than the threshold voltage, the output voltage of the call detection circuit 8 becomes the L level, and the call detection control 4 is performed as the call of the camera-less front door subunit S 1.
Since 6 is determined, there is no erroneous call due to excessive microphone input as in the past.
【００２２】ここで、カメラ付玄関子機Ｓ2から親機Ｍ1
が呼出された場合、玄関子機接続アダプタ１のＣＰＵ４
が動作し、呼出検出回路８で子機ライン切替制御回路１
３から入力される電圧がしきい値電圧発生回路７で発生
させているカメラ付玄関子機の呼出検出用しきい値電圧
を下まわったことを検出し、Ｌレベルを出力する。呼出
検出制御４６は、カメラ付玄関子機Ｓ2の呼出検出用し
きい値電圧が出力されているとき呼出検出回路８の出力
を読み取り、Ｌレベルであれば呼出と判断し、ＣＰＵ４
の親機呼出制御４２へ呼出があったことを知らせる。Ｃ
ＰＵ４の親機呼出制御４２はカメラ付玄関子機Ｓ2から
呼出があったことを知ると、親機呼出回路３を動作さ
せ、ラインＬ11〜Ｌ1nのＬ12を介して親機Ｍ1にカメラ
付玄関子機Ｓ2から呼出があったことを知らせる。ま
た、カメラ無玄関子機Ｓ1が親機Ｍ1を呼出したときも同
様の経路でラインＬ11を介し親機Ｍ1にカメラ無玄関子
機Ｓ1からの呼出があったことを知らせる。Here, the camera-equipped entrance slave S 2 to the master M 1
Is called, the CPU 4 of the entrance cordless handset connection adapter 1
And the call detection circuit 8 activates the slave line switching control circuit 1
It is detected that the voltage input from 3 has fallen below the calling detection threshold voltage of the front door subunit with camera generated by the threshold voltage generation circuit 7, and an L level is output. The call detection control 46 reads the output of the call detection circuit 8 when the threshold voltage for detecting the call of the entrance device with camera S 2 is output, and if it is at the L level, it judges that the call is made, and the CPU 4
Notify that there is a call to the parent machine call control 42 of. C
When the master call control 42 of the PU 4 learns that there is a call from the camera-equipped entrance slave S 2 , the master call circuit 3 is operated and the master M 1 is connected via L 12 of the lines L 11 to L 1n. Notify that there is a call from the front door subunit with camera S 2 . Further, notifying that the camera no entrance door station S 1 is had call from the camera-free entrance door station S 1 to the master unit M 1 through the line L 11 in the same path when calling the base unit M 1.
【００２３】カメラ付玄関子機Ｓ2からの呼出に応じ、
親機Ｍ1の選局釦Ｂｔ2を押下し、カメラ付玄関子機Ｓ2
が選局されたときは、玄関子機接続アダプタ１の選局検
出回路２を介してＣＰＵ４のカメラ付玄関子機電源制御
４０からカメラ付玄関子機電源回路５を動作させ、子機
ライン切替制御回路１３、ラインＬ2を介してカメラ付
玄関子機Ｓ2へカメラ電源を供給する。カメラ付玄関子
機Ｓ2からの音声信号は、カメラ付玄関子機Ｓ2が選局さ
れたときＣＰＵ４の通話切替制御４８の動作により、子
機ライン切替制御回路１３→カメラ付玄関子機通話アン
プ１２→通話切替回路１０→親機−子機通話アンプ１１
→ラインＬS1の経路で送出され、親機Ｍ 1と通話が可能
となる。また、映像信号は子機ライン切替制御回路１
３、ラインＢ1を介してテレビモニタＭ2へ送出され、映
像がモニタされる。Entrance cordless handset S with cameraTwoIn response to a call from
Base unit M1Tuning button BtTwoPress to enter the front door subunit S with cameraTwo
When the channel is selected, the channel selection of the entrance cordless handset connection adapter 1
Power supply control for camera-equipped front door subunit of CPU 4 via output circuit 2
From 40, operate the power supply circuit 5 of the entrance child device with camera,
Line switching control circuit 13, line LTwoWith camera via
Entrance slave STwoSupply camera power to. Front door with camera
Machine STwoThe voice signal from theTwoIs tuned
When the call is switched, the operation of the call switching control 48 of the CPU 4 causes the child
Machine line switching control circuit 13-> Entrance phone with camera
12 → call switching circuit 10 → master-slave call amplifier 11
→ Line LS1Of the master unit M 1Can be called
Becomes In addition, the video signal is a slave unit line switching control circuit 1
3, TV monitor M via line B1TwoSent to
The image is monitored.
【００２４】親機Ｍ1がカメラ無玄関子機Ｓ1と接続され
たときは、玄関子機接続アダプタ１の選局検出回路２、
ＣＰＵ４の選局検出制御４１を介して通話切替制御４８
が制御され、通話切替回路１０を動作させる。カメラ無
玄関子機Ｓ1からの音声信号は、子機ライン切替制御回
路１３→通話切替回路１０→親機−子機通話アンプ１１
の経路で送出され、親機Ｍ1と通話が可能となる。（カ
メラ無玄関子機Ｓ1が接続された場合は、テレビモニタ
Ｍ2はモニタされない）When the master M 1 is connected to the camera-less front door slave S 1 , the channel selection detection circuit 2 of the front door slave connection adapter 1,
Call switching control 48 via the channel selection detection control 41 of the CPU 4
Is controlled to operate the call switching circuit 10. The voice signal from the cameraless front-end handset S 1 is a handset line switching control circuit 13 → call switching circuit 10 → master-handset call amplifier 11
Then, the call can be made with the master unit M 1 . (The TV monitor M 2 is not monitored when the cameraless front-end device S 1 is connected.)
【００２５】[0025]
【発明の効果】以上の説明から明らかなように本発明に
よるカメラ付玄関子機およびカメラ無玄関子機が混在す
るテレビインターホン装置によれば、カメラ付玄関子機
の呼出検出用しきい値電圧とカメラ無玄関子機の呼出検
出用しきい値電圧をそれぞれ交互に発生させるしきい値
電圧発生回路を備えたので、カメラ無玄関子機に入力さ
れる過大音声による誤呼出を防止できる。As is clear from the above description, according to the television intercom apparatus according to the present invention in which the camera-equipped front subunit and the non-camera subunit are mixed, the threshold voltage for call detection of the camera-equipped subunit is provided. Since it is provided with a threshold voltage generation circuit for alternately generating the threshold voltage for call detection of the camera-less front-end device, it is possible to prevent an erroneous call due to excessive voice input to the camera-free front-end device.
【図１】本発明によるテレビインターホン装置の一実施
例を示す回路図。FIG. 1 is a circuit diagram showing an embodiment of a television intercom apparatus according to the present invention.
【図２】本発明によるテレビインターホン装置の呼出検
出チャート。FIG. 2 is a call detection chart of the TV intercom apparatus according to the present invention.
【図３】従来のテレビインターホン装置を示す回路図。FIG. 3 is a circuit diagram showing a conventional television intercom device.
１・・・・・・玄関子機接続アダプタ ７・・・・・・しきい値電圧発生回路 ８・・・・・・呼出検出回路 Ｓ1・・・・・・カメラ無玄関子機 Ｓ2・・・・・・カメラ付玄関子機 Ｓ1〜Ｓn・・・・・・複数の子機 Ｌ1〜Ｌn・・・・・・ライン Ｍ1・・・・・・親機1- ・ Entry-door unit connection adapter 7 --- Threshold voltage generating circuit 8- ・ Call detection circuit S 1-・ Camera-less entry unit S 2・ ・ ・ ・ Entrance slave with camera S 1 〜S n・ ・ ・ ・ ・ ・ Multiple slaves L 1 〜L n・ ・ ・ ・ ・ ・ Line M 1・ ・ ・ ・ ・ Master
Claims (1)
玄関子機（Ｓ2）が混在した複数の子機（Ｓ1〜Ｓn）
と、前記複数の子機にライン（Ｌ1〜Ｌn）を介して接続
された玄関子機接続アダプタ（１）と、前記玄関子機接
続アダプタに接続された親機（Ｍ1）とを有し、 前記玄関子機接続アダプタは、前記カメラ付玄関子機か
らの呼出検出用しきい値電圧および前記カメラ無玄関子
機からの呼出検出用しきい値電圧を交互に発生するしき
い値電圧発生回路（７）と、 前記複数の子機のそれぞれに接続され前記カメラ付玄関
子機からの呼出検出用しきい値電圧および前記カメラ無
玄関子機からの呼出検出用しきい値電圧より低圧の電圧
を両しきい値電圧の発生タイミングに同期してそれぞれ
検出したとき前記カメラ付玄関子機、前記カメラ無玄関
子機からの呼出と判断する呼出検出回路（８）とを備え
たことを特徴とするテレビインターホン装置。1. A camera-free entrance door station (S 1) and a camera with the entrance door station (S 2) a plurality of slave having a mix of (S 1 to S n)
And an entrance slave device connection adapter (1) connected to the plurality of slave devices via lines (L 1 to L n ), and a master device (M 1) connected to the entrance slave device connection adapter. However, the entrance cordless handset connection adapter is a threshold voltage for alternately generating a threshold voltage for detecting a call from the entrance cordless handset with camera and a threshold voltage for detecting a call from the camera-free entrance cordless handset. A generation circuit (7), which is connected to each of the plurality of slaves and is lower than a threshold voltage for detecting a call from the camera-equipped front slave and a threshold for detecting a call from the camera-less front slave. And a call detection circuit (8) for determining that a call is made from the camera-equipped front cordless handset or the camera-less front door cordless handset when the respective voltages are detected in synchronization with the generation timings of both threshold voltages. Characteristic TV intercom device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31107295A JP3254359B2 (en) | 1995-11-29 | 1995-11-29 | TV intercom equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31107295A JP3254359B2 (en) | 1995-11-29 | 1995-11-29 | TV intercom equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09154128A true JPH09154128A (en) | 1997-06-10 |
| JP3254359B2 JP3254359B2 (en) | 2002-02-04 |
Family
ID=18012784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31107295A Expired - Fee Related JP3254359B2 (en) | 1995-11-29 | 1995-11-29 | TV intercom equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3254359B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3367653A1 (en) | 2017-02-27 | 2018-08-29 | Panasonic Intellectual Property Management Co., Ltd. | Lobby interphone, doorphone system, and communication method |
| EP3367652A1 (en) | 2017-02-27 | 2018-08-29 | Panasonic Intellectual Property Management Co., Ltd. | Distributor, doorphone system, and communication method |
-
1995
- 1995-11-29 JP JP31107295A patent/JP3254359B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3367653A1 (en) | 2017-02-27 | 2018-08-29 | Panasonic Intellectual Property Management Co., Ltd. | Lobby interphone, doorphone system, and communication method |
| EP3367652A1 (en) | 2017-02-27 | 2018-08-29 | Panasonic Intellectual Property Management Co., Ltd. | Distributor, doorphone system, and communication method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3254359B2 (en) | 2002-02-04 |
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