JPH03211953A - Video doorphone - Google Patents

Video doorphone

Info

Publication number
JPH03211953A
JPH03211953A JP677690A JP677690A JPH03211953A JP H03211953 A JPH03211953 A JP H03211953A JP 677690 A JP677690 A JP 677690A JP 677690 A JP677690 A JP 677690A JP H03211953 A JPH03211953 A JP H03211953A
Authority
JP
Japan
Prior art keywords
camera
circuit
signal
control signal
doorphone
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
Application number
JP677690A
Other languages
Japanese (ja)
Other versions
JP2672166B2 (en
Inventor
Wataru Matsumoto
渉 松本
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2006776A priority Critical patent/JP2672166B2/en
Publication of JPH03211953A publication Critical patent/JPH03211953A/en
Application granted granted Critical
Publication of JP2672166B2 publication Critical patent/JP2672166B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Closed-Circuit Television Systems (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)

Abstract

PURPOSE:To always pick up an object by sending out a control signal from an angle control signal transmission circuit to the slave set of a doorphone according to a signal from the input key of a master unit so as to control the direction of a camera of the slave set of the doorphone and changing the direction of the camera at a desired angle by an operation from the master unit. CONSTITUTION:A picture photographed by a camera 21 of the doorphone slave set 3 is displayed on a display 8 in a master unit 2 of the doorphone and a sound recorded by a microphone 17 in the slave set 3 of the doorphone is reproduced by a loudspeaker 10 in the master unit 2 of the doorphone. Then, a sound recorded by a microphone 10 in the master unit 2 of the doorphone is reproduced by a loudspeaker 16 in the slave set 3 of the doorphone. According to the signal from an input key 11, the control signal is sent out from an angle control signal transmission circuit 22 to the slave set 3 of the doorphone so as to control the direction of the camera 21 and a camera angle control circuit 23 sets the direction of the camera at the desired angle. Thus, while observing the picture of a CRT 8, the direction of the camera can be changed from the side of the master unit 2.

Description

【発明の詳細な説明】 [産業上の利用分野] この発明は、玄関のドアホン子機により来訪を告げる来
訪者の顔をカメラにより撮像してCRTに表示し、来訪
者の顔を確認できるテレビドアホンに関するものである
[Detailed Description of the Invention] [Industrial Application Field] This invention provides a television that allows the visitor's face to be confirmed by capturing an image of the visitor's face using a camera and displaying the image on a CRT. It concerns doorbells.

[従来の技術] 第6図は、従来のテレビドアホン(1)の構成を示すブ
ロック図であり、テレビドアホン(1)は親機(2)と
子機(3)とを有しており、親機(2)と子機(3)と
は2線式の伝送路(4)により接続されている。
[Prior Art] FIG. 6 is a block diagram showing the configuration of a conventional video door phone (1), which includes a base unit (2) and a slave unit (3). The master unit (2) and slave unit (3) are connected by a two-wire transmission path (4).

そして、親機(2)は、屋内に配置され、伝送路(4)
に接続されたビデオインターフェース回路(5)、変復
調回路(6)および電源回路(7)を備えており、ビデ
オインターフェース回路(5)には表示器としてのCR
T (8)および制御回路(9)が接続されている。
The base unit (2) is placed indoors, and the transmission path (4)
A video interface circuit (5), a modem circuit (6), and a power supply circuit (7) are connected to the video interface circuit (5), and the video interface circuit (5) has a CR as a display.
T (8) and a control circuit (9) are connected.

また、変復調回路(6)には制御回路(9)および送受
話器(10)が接続されており、制御回路(9)には子
機を複数台接続したときの切り替えを行う操作スイッチ
回路(11)が接続されている。
In addition, a control circuit (9) and a handset (10) are connected to the modulation/demodulation circuit (6), and the control circuit (9) is connected to an operation switch circuit (11) that performs switching when multiple handsets are connected. ) are connected.

更に、電源回路(7)にはACアダプタ(12)が接続
されており、ACアダプタ(12)を商用AC100V
電源に接続することにより親機(2)に電力が供給され
るようになっている。
Furthermore, an AC adapter (12) is connected to the power supply circuit (7), and the AC adapter (12) is connected to a commercial AC100V.
Power is supplied to the base unit (2) by connecting it to a power source.

そして、子機(3)は、玄関に配置され、伝送路(4)
に接続された変復調回路(13)および電源回路(14
)を備えており、変復調回路(13)には、カメラ信号
処理回路(15)、スピーカ(16) マイク(17)
および呼び出しボタン(18)が接続されている。
The slave unit (3) is placed at the entrance, and the transmission line (4)
A modulation/demodulation circuit (13) and a power supply circuit (14) connected to
), the modem circuit (13) includes a camera signal processing circuit (15), a speaker (16), and a microphone (17).
and a call button (18) are connected.

また、カメラ信号処理回路(15)には撮像回路(19
)およびレンズ(20)からなるカメラ(21)が接続
されている。
The camera signal processing circuit (15) also includes an imaging circuit (19).
) and a camera (21) consisting of a lens (20).

なお、実際にテレビドアホンを製造する場合は、親機(
2)は第7図のような構成とし、子機(3)は第8図の
ような構成とする。
In addition, when actually manufacturing a video door phone, the main unit (
2) has the configuration as shown in FIG. 7, and the slave unit (3) has the configuration as shown in FIG.

次に動作について説明する。Next, the operation will be explained.

来訪者が玄関に配置された子機(3)の呼び出しボタン
(18)を押すと、呼び出しボタン(18)のON信号
は変復調回路(13)、伝送路(4)および変復調回路
(6)を介して親機(2)の制御回路(9)に伝達され
る。
When a visitor presses the call button (18) of the handset (3) placed at the entrance, the ON signal of the call button (18) connects the modulation/demodulation circuit (13), transmission line (4), and modulation/demodulation circuit (6). The data is transmitted to the control circuit (9) of the base unit (2) via the base unit (2).

そして、呼び出しボタン(18)のON信号を受信する
制御回路(9)は電源回路(7)から電力を伝送路(4
)を介して電源回路(14)へ供給し、電源回路(7)
から供給される電力により電源回路(14)は子機(3
)の回路内に必要な定電圧を作り出して各回路に供給し
、これによりカメラ(21)および音声系統が作動する
The control circuit (9) that receives the ON signal of the call button (18) supplies power from the power supply circuit (7) to the transmission line (4).
) is supplied to the power supply circuit (14) through the power supply circuit (7).
The power supply circuit (14) is powered by the power supplied from the handset (3).
) A necessary constant voltage is generated in the circuit and supplied to each circuit, thereby operating the camera (21) and the audio system.

それから、カメラ(21)のレンズ(20)を通って撮
像回路(19)内の固体撮像素子上に投影された被写体
は、撮像回路(19)により映像信号(100)に変換
され、映像信号(100)は、カメラ信号処理回路(1
5)によりCRT(8)に適切に表示されるように種々
の信号処理を施されて伝送路(4)へ送出される(第9
図参照)。
Then, the object projected onto the solid-state image sensor in the imaging circuit (19) through the lens (20) of the camera (21) is converted into a video signal (100) by the imaging circuit (19), and the video signal ( 100) is a camera signal processing circuit (1
5), the signal is subjected to various signal processing so as to be appropriately displayed on the CRT (8), and then sent to the transmission path (4) (9th
(see figure).

更に、その映像信号は親機(2)のビデオインターフェ
ース回路(5)によって伝送路(4)上から抽出されて
CRT (8)に映像が表示される。
Furthermore, the video signal is extracted from the transmission path (4) by the video interface circuit (5) of the base unit (2), and the video is displayed on the CRT (8).

また、子機(3)のマイク(17)が集音した音声信号
は、変復調回路(13)によって変調され、伝送路(4
)を通って親機(2)へ出力される(第9図参照)。
In addition, the audio signal collected by the microphone (17) of the handset (3) is modulated by the modulation/demodulation circuit (13), and is then modulated by the transmission path (4).
) and is output to the base unit (2) (see Figure 9).

そして、その音声信号は変復調回路(6)によって復調
され、送受話器(10)のスピーカから音声を再生する
Then, the audio signal is demodulated by the modulation/demodulation circuit (6), and the audio is reproduced from the speaker of the handset (10).

一方、送受話器(10)のマイクから集音した音声は、
変復調回路(13)によって子機(3)から親機(2)
へ音声信号を送る際のキャリア周波数とは異なるキャリ
ア周波数に変調され、伝送路(4)を通って子機(3)
へ出力される(第9図参照)。
On the other hand, the sound collected from the microphone of the handset (10) is
From the slave unit (3) to the base unit (2) by the modulation/demodulation circuit (13)
The audio signal is modulated to a carrier frequency different from the carrier frequency used when sending the audio signal to the handset (3) through the transmission path (4).
(See Figure 9).

そして、子機(3)において、その音訓信号は変復調回
路(13)によって復調され、スピーカ(16)から音
声を再生する。
In the handset (3), the tone signal is demodulated by the modulation/demodulation circuit (13), and the sound is reproduced from the speaker (16).

[発明が解決しようとする課題] 従来のテレビドアホンは、以上のように構成されている
ので、カメラの向きは子機の据付時に設定され、カメラ
のフレーム範囲外に被写体が移動してしまった場合、被
写体が映らなくなってしまうという課題があった。
[Problem to be solved by the invention] Since the conventional video door intercom is configured as described above, the camera direction is set when the handset is installed, and the subject moves outside the camera frame range. In this case, there was a problem that the subject would not be visible.

この発明は、上記のような課題を解消するために成され
たもので、親機側からCRTの画面を見ながらカメラの
向きを変えることができるテレビドアホンを得ることを
目的とする。
This invention was made to solve the above-mentioned problems, and an object thereof is to obtain a video door phone that can change the direction of the camera while viewing the CRT screen from the main unit side.

[課題を解決するための手段〕 この発明に係わるテレビドアホンは、カメラ。[Means for solving problems] The video door phone according to this invention is a camera.

マイク、スピーカからなるドアホン子機と、表示器、マ
イク、スピーカからなるドアホン親機と、ドアホン親機
とドアホン子機とを接続する2線式の接続ケーブルとを
有するテレビドアホンにおいて、前記ドアホン親機に、
入力キーおよび入力キーからの信号によりドアホン子機
のカメラの向きを制御する制御信号をドアホン子機に送
出する角度制御信号送出回路を設け、かつ前記カメラを
移動自在に支持し、更に前記ドアホン子機に、カメラを
移動する駆動手段および前記角度制御信号送出回路から
の信号により駆動手段を制御するカメラ角度制御回路を
設け、入力キーからの信号によりドアホン子機のカメラ
の向きを制御する制御信号を角度制御信号送出回路から
ドアホン子機に送出し、角度制御信号送出回路からの信
号により駆動手段をカメラ角度制御回路により制御し、
カメラの向きを所望の角度にすることを特徴とするもの
である。
In the video door phone, the door phone base unit includes a door phone slave unit consisting of a microphone and a speaker, a door phone base unit consisting of a display, a microphone, and a speaker, and a two-wire connection cable that connects the door phone base unit and the door phone slave unit. In machine,
An input key and an angle control signal sending circuit that sends a control signal for controlling the direction of the camera of the door intercom handset to the door intercom handset based on a signal from the input key, and support the camera movably; The machine is provided with a drive means for moving the camera and a camera angle control circuit for controlling the drive means by a signal from the angle control signal sending circuit, and a control signal for controlling the direction of the camera of the intercom slave unit by a signal from the input key. is sent from the angle control signal sending circuit to the door intercom handset, and the driving means is controlled by the camera angle control circuit based on the signal from the angle control signal sending circuit,
The feature is that the camera is oriented at a desired angle.

[作用コ この発明におけるテレビドアホンは、ドアホン子機のカ
メラにより撮った画像をドアホン親機の表示器に表示す
ると共にドアホン子機のマイクにより採った音声をドア
ホン親機のスピーカにより再生し、ドアホン親機のマイ
クにより採った音声をドアホン子機のスピーカにより再
生し、入力キーからの信号によりドアホン子機のカメラ
の向きを制御する制御信号を角度制御信号送出回路から
ドアホン子機に送出し、角度制御信号送出回路からの信
号により駆動手段をカメラ角度制御回路により制御し、
カメラの向きを所望の角度にする。
[Function] The video doorphone of this invention displays an image taken by the camera of the doorphone slave unit on the display of the doorphone base unit, and also reproduces the sound picked up by the microphone of the doorphone slave unit through the speaker of the doorphone base unit. The sound picked up by the microphone of the main unit is played back by the speaker of the door intercom slave unit, and a control signal for controlling the direction of the camera of the door intercom slave unit is sent from the angle control signal sending circuit to the door intercom slave unit according to the signal from the input key. The driving means is controlled by the camera angle control circuit based on the signal from the angle control signal sending circuit,
Orient the camera to the desired angle.

[実施例] 以下、この発明の一実施例を図について説明する。[Example] An embodiment of the present invention will be described below with reference to the drawings.

テレビドアホン(1)は、第2図に示すように、親機(
2)と子機(3)とを有しており、親機(2)と子機(
3)とは2線式の伝送路(4)により接続されている。
As shown in Figure 2, the video door phone (1) has a main unit (
2) and a slave unit (3).
3) through a two-wire transmission line (4).

そして、親機(2)は、屋内に配置され、伝送路(4)
に接続されたビデオインターフェース回路(5)、変復
調回路(6)、子機のカメラの向きを制御する制御信号
を送出する角度制御信号送出口路(22)および電源回
路(7)を備えており、ビデオインターフェース回路(
5)には表示器としてのCRT (8)および制御回路
(9)が接続されている。
The base unit (2) is placed indoors, and the transmission path (4)
The camera is equipped with a video interface circuit (5) connected to the camera, a modem circuit (6), an angle control signal output path (22) for transmitting a control signal for controlling the orientation of the slave unit's camera, and a power supply circuit (7). , video interface circuit (
5) is connected to a CRT (8) as a display and a control circuit (9).

また、変復調回路(6)には制御回路(9)および送受
話器(10)が接続されており、制御回路(9)には子
機を複数台接続したときの切り替えを行う操作スイッチ
回路(11)および角度制御信号送出回路(22)が接
続されている。
In addition, a control circuit (9) and a handset (10) are connected to the modulation/demodulation circuit (6), and the control circuit (9) is connected to an operation switch circuit (11) that performs switching when multiple handsets are connected. ) and an angle control signal sending circuit (22) are connected.

更に、電源回路(7)にはACアダプタ(12)が接続
されており、ACアダプタ(12)を商用電源に接続す
ることにより親機(2)に電力が供給されるようになっ
ている。
Further, an AC adapter (12) is connected to the power supply circuit (7), and power is supplied to the base unit (2) by connecting the AC adapter (12) to a commercial power source.

そして、子機(3)は、玄関に配置され、伝送路(4)
に接続された変復調回路(13)、角度制御信号送出回
路(22)からの信号によりカメラ(21)の向きを変
えるカメラ角度制御回路(23)および電源回路(14
)を備えており、変復調回路(13)には、カメラ信号
処理回路(15)、スピーカ(16)、マイク(17)
および呼び出しボタン(18)が接続されている。
The slave unit (3) is placed at the entrance, and the transmission line (4)
A camera angle control circuit (23) and a power supply circuit (14) that change the direction of the camera (21) according to signals from a modem circuit (13) and an angle control signal sending circuit (22) connected to the
), and the modulation/demodulation circuit (13) includes a camera signal processing circuit (15), a speaker (16), and a microphone (17).
and a call button (18) are connected.

また、カメラ信号処理回路(15)には撮像回路(19
)およびレンズ(20)からなる移動自在に支持された
カメラ(21)が接続されている。
The camera signal processing circuit (15) also includes an imaging circuit (19).
) and a movably supported camera (21) consisting of a lens (20).

角度制御信号送出回路(22)は、第1図に詳示するよ
うに、子機(3)のカメラ(21)の向きを上下左右に
操作する4個のスイッチからなるモーター駆動スイッチ
(24)、制御信号エンコーダ(25)および6.5M
HzFM変調回路(26)により構成されている。
As shown in detail in FIG. 1, the angle control signal sending circuit (22) includes a motor-driven switch (24) consisting of four switches for controlling the direction of the camera (21) of the handset (3) up, down, left and right. , control signal encoder (25) and 6.5M
It is composed of a HzFM modulation circuit (26).

また、カメラ角度制御回路(23)は、6.5MHzF
M復調回路(27)、制御信号デコーダ(28)および
モーター駆動回路(29)により構成されており、モー
ター駆動回路(29)には駆動手段としてのカメラ(2
1)の向きを左右に移動する左右モータ(30)とカメ
ラ(21)の向きを上下に移動する上下モータ(31)
とが接続されている。
In addition, the camera angle control circuit (23) operates at 6.5MHzF.
It is composed of an M demodulation circuit (27), a control signal decoder (28) and a motor drive circuit (29), and the motor drive circuit (29) is equipped with a camera (2) as a drive means.
1) A left and right motor (30) that moves the direction of the camera (21) left and right, and a vertical motor (31) that moves the camera (21) up and down.
are connected.

なお、実際にテレビドアホンを製造する場合は、親機(
2)は第3図のような構成とし、子機(3)は第4図の
ような構成とする。
In addition, when actually manufacturing a video door phone, the main unit (
2) has the configuration as shown in FIG. 3, and the slave unit (3) has the configuration as shown in FIG. 4.

ついで、本実施例の作用について説明する。Next, the operation of this embodiment will be explained.

来訪者が玄関に配置された子機(3)の呼び出しボタン
(18)を押すと、呼び出しボタン(18)のON信号
は変復調回路(13)、伝送路(4)および変復調回路
(6)を介して親機(2)の19御回路(9)に伝達さ
れる。
When a visitor presses the call button (18) of the handset (3) placed at the entrance, the ON signal of the call button (18) connects the modulation/demodulation circuit (13), transmission line (4), and modulation/demodulation circuit (6). The signal is transmitted to the 19 control circuit (9) of the base unit (2) via the base unit (2).

そして、呼び出しボタン(18)のON信号を受信する
制御回路(9)は電源回路(7)から電力を伝送路(4
)を介して電源回路(14)へ供給し、電源回路(7)
から供給される電力により電源回路(14)は子機(3
)の回路内に必要な定電圧を作り出して各回路に供給し
、これによりカメラ(21)および音声系統が作動する
The control circuit (9) that receives the ON signal of the call button (18) supplies power from the power supply circuit (7) to the transmission line (4).
) is supplied to the power supply circuit (14) through the power supply circuit (7).
The power supply circuit (14) is powered by the power supplied from the handset (3).
) A necessary constant voltage is generated in the circuit and supplied to each circuit, thereby operating the camera (21) and the audio system.

それから、カメラ(21)のレンズ(20)を通って撮
像回路(19)内の固体撮像素子上に投影された被写体
は、撮像回路(19)により映像信号(100)’lこ
変換され、映像15号(100)は、カメラ信号処理回
路(15)によりCRT(8)に適切に表示されるよう
に種々の信号処理を施されて伝送路(4)へ送出される
(第8図参照)。
Then, the object projected onto the solid-state image sensor in the imaging circuit (19) through the lens (20) of the camera (21) is converted into a video signal (100) by the imaging circuit (19), and the image is converted into an image signal (100). No. 15 (100) is subjected to various signal processing by the camera signal processing circuit (15) so as to be appropriately displayed on the CRT (8), and then sent to the transmission path (4) (see Figure 8). .

更に、その映像信号は親機(2)のビデオインターフェ
ース回路(5)によって伝送路(4)上から抽出されて
CRT (8)に映像が表示される。
Furthermore, the video signal is extracted from the transmission path (4) by the video interface circuit (5) of the base unit (2), and the video is displayed on the CRT (8).

また、子機(3)のマイク(17)が集音した音声信号
は、変復調回路(13)によって変調され、伝送路(4
)を通って親機(2)へ出力される(第8図参照)。
In addition, the audio signal collected by the microphone (17) of the handset (3) is modulated by the modulation/demodulation circuit (13), and is then modulated by the transmission path (4).
) and is output to the base unit (2) (see Figure 8).

そして、その音声信号は変復調回路(6)によって復調
され、送受話器(10)のスピーカから音声を再生する
Then, the audio signal is demodulated by the modulation/demodulation circuit (6), and the audio is reproduced from the speaker of the handset (10).

一方、送受話器(10)のマイクから集音した音声は、
変復調回路(13)によって子機(3)から親機(2)
へ音声信号を送る際のキャリア周波数とは異なるキャリ
ア周波数に変調され、伝送路(4)を通って子機(3)
へ出力される(第8図参照)。
On the other hand, the sound collected from the microphone of the handset (10) is
From the slave unit (3) to the base unit (2) by the modulation/demodulation circuit (13)
The audio signal is modulated to a carrier frequency different from the carrier frequency used when sending the audio signal to the handset (3) through the transmission path (4).
(See Figure 8).

そして、子機(3)において、その音声信号は変復調回
路(13)によって復調され、スピーカ(16)から音
声を発声する。
Then, in the handset (3), the audio signal is demodulated by the modulation/demodulation circuit (13), and the audio is output from the speaker (16).

また、来訪者がカメラ(21)のフレーム外に移動して
、来訪者がCRT (8)に映らなくなった場合、親機
(2)により応答している家人は親機(2)のCRT 
(8)に映る映像を見なからモータ駆動スイッチ(24
)によりカメラ(21)の向きを上下左右の所望の方向
に移動すべく操作する。
Additionally, if the visitor moves out of the frame of the camera (21) and is no longer visible on the CRT (8), the family member who is responding via the base unit (2) should
(8) Do not look at the image displayed on the motor drive switch (24).
) to move the camera (21) in a desired direction, up, down, left, or right.

そして、モータ駆動スイッチ(24)の4個のスイッチ
のON・OFF信号は制御信号エンコーダ(25)によ
りパルス化されて制御信号Aとなり、6.5MHzFM
変調回路(26)によりFM変調されて6.5MHzF
M変調信号Bとなり子機(3)に送出される(第1図お
よび第5図参照)。
Then, the ON/OFF signals of the four switches of the motor drive switch (24) are pulsed by the control signal encoder (25) to become the control signal A, which is 6.5MHzFM.
FM modulated by the modulation circuit (26) to 6.5MHzF
The M modulated signal becomes B and is sent to the handset (3) (see FIGS. 1 and 5).

それから、6.5MHzFM変調信号Bは子機(3)の
6.5MHzFM復調回路(27)によりFM復調され
てFM復調信号Cとなり、FM復調信号Cは制御信号デ
コーダ(28)により選択されてモータ駆動スイッチ信
号りとなり、モータ駆動スイッチ信号りにより左右モー
タ(30)または上下モータ(31)が所望の方向に回
転してカメラ(21)の向きを変えて来訪者を映す。
Then, the 6.5MHz FM modulation signal B is FM demodulated by the 6.5MHz FM demodulation circuit (27) of the handset (3) to become the FM demodulation signal C, and the FM demodulation signal C is selected by the control signal decoder (28) and output to the motor. The drive switch signal is activated, and the motor drive switch signal causes the left and right motors (30) or the vertical motors (31) to rotate in a desired direction and change the direction of the camera (21) to photograph the visitor.

これにより家人は来訪者の顔を確認することができる。This allows family members to see the faces of visitors.

なお、上述実施例においては、カメラ(21)の向きを
変えるように構成したが、これに限らず、子機(3)全
体の向きを変えるように構成しても同様の効果を奏する
In the above-described embodiment, the camera (21) is configured to change its orientation, but the present invention is not limited to this, and the same effect can be obtained even if the entire handset (3) is configured to change its orientation.

[発明の効果コ 以上説明したように、この発明によれば、親機の人カキ
−からの信号によりドアホン子機のカメラの向きを制御
する制御信号を角度制御信号送出回路からドアホン子機
に送出し、角度制御信号送出回路からの信号により駆動
手段をカメラ角度制御回路により制御し、カメラの向き
を親機から操作して所望の角度に変えられるように構成
したので、カメラのフレーム範囲外に被写体が移動して
もカメラを被写体の移動した方向に向きを変えて、被写
体を常に映すことができる。
[Effects of the Invention] As explained above, according to the present invention, the control signal for controlling the direction of the camera of the door intercom slave unit is transmitted from the angle control signal sending circuit to the door intercom slave unit based on the signal from the main unit's human key. The drive means is controlled by the camera angle control circuit using signals from the sending and angle control signal sending circuit, and the camera is configured so that the direction of the camera can be changed to a desired angle by operating from the base unit, so that it can be moved outside the camera frame range. Even if the subject moves, the camera can be turned in the direction in which the subject is moving so that the subject is always visible.

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

第1図はこの発明の一実施例による角度制御信号送出回
路とカメラ角度制御回路との構成および各部での信号波
形を示す図、第2図はこの発明の一実施例によるテレビ
ドアホンの構成を示すブロック図、第3図は実際にこの
発明の親機を製造する場合の構成を示すブロック図、第
4図は実際にこの発明の子機を製造する場合の構成を示
すブロック図、第5図はこの発明の一実施例によるテレ
ビドアホンの周波数分布図、第6図は従来のテレビドア
ホンの構成を示すブロック図、第7図は実際に従来の親
機を製造する場合の構成を示すブロック図、第8図は実
際に従来の子機を製造する場合の構成を示すブロック図
、第9図は従来のテレビドアホンの周波数分布図である
。 図中、(1)はテレビドアホン、(2)は親機、(3)
は子機、(4)は接続ケーブル、(8)は表示器、(1
,0)はスピーカ・マイク、(16)はスピーカ、(1
7)はマイク、(21)はカメラ、(22)は角度制御
信号送出回路、(23)はカメラ角度制御回路、(24
)は入力キー(30,31)は駆動手段である。 なお、図中同一符号は同一または相当部分を示す。
FIG. 1 is a diagram showing the configuration of an angle control signal sending circuit and a camera angle control circuit according to an embodiment of the present invention, and signal waveforms at each part, and FIG. 2 is a diagram showing the configuration of a video door intercom according to an embodiment of the present invention. FIG. 3 is a block diagram showing the configuration when actually manufacturing the base device of the present invention, FIG. 4 is a block diagram showing the configuration when actually manufacturing the slave device of this invention, and FIG. The figure is a frequency distribution diagram of a video door phone according to an embodiment of the present invention, FIG. 6 is a block diagram showing the configuration of a conventional video door phone, and FIG. 7 is a block diagram showing the configuration when actually manufacturing a conventional base unit. 8 is a block diagram showing the configuration when a conventional handset is actually manufactured, and FIG. 9 is a frequency distribution diagram of a conventional video door phone. In the diagram, (1) is the video door phone, (2) is the base unit, (3)
(4) is the connection cable, (8) is the display unit, (1) is the slave unit, (4) is the connection cable, (8) is the display unit, (1)
, 0) is the speaker microphone, (16) is the speaker, (1
7) is a microphone, (21) is a camera, (22) is an angle control signal sending circuit, (23) is a camera angle control circuit, (24)
), the input keys (30, 31) are driving means. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

【特許請求の範囲】[Claims] カメラ、マイク、スピーカからなるドアホン子機と、表
示器、マイク、スピーカからなるドアホン親機と、ドア
ホン親機とドアホン子機とを接続する2線式の接続ケー
ブルとを有するテレビドアホンにおいて、前記ドアホン
親機に、入力キーおよび入力キーからの信号によりドア
ホン子機のカメラの向きを制御する制御信号をドアホン
子機に送出する角度制御信号送出回路を設け、かつ前記
カメラを移動自在に支持し、更に前記ドアホン子機に、
カメラを移動する駆動手段および前記角度制御信号送出
回路からの信号により駆動手段を制御するカメラ角度制
御回路を設け、入力キーからの信号によりドアホン子機
のカメラの向きを制御する制御信号を角度制御信号送出
回路からドアホン子機に送出し、角度制御信号送出回路
からの信号により駆動手段をカメラ角度制御回路により
制御し、カメラの向きを所望の角度にすることを特徴と
するテレビドアホン。
The video door intercom has a door intercom slave unit including a camera, a microphone, and a speaker, a base unit comprising a display, a microphone, and a speaker, and a two-wire connection cable connecting the base unit and the slave unit. The door intercom base unit is provided with an input key and an angle control signal sending circuit for transmitting a control signal for controlling the direction of the camera of the door intercom slave unit to the door intercom slave unit according to a signal from the input key, and the camera is movably supported. , and further to the doorphone handset,
A drive means for moving the camera and a camera angle control circuit for controlling the drive means by a signal from the angle control signal sending circuit are provided, and a control signal for controlling the direction of the camera of the intercom slave unit is angularly controlled by a signal from an input key. A video door intercom characterized in that a signal is sent from a signal sending circuit to a door intercom handset, and a driving means is controlled by a camera angle control circuit in response to a signal from an angle control signal sending circuit, so that the direction of the camera is set at a desired angle.
JP2006776A 1990-01-16 1990-01-16 TV door phone Expired - Fee Related JP2672166B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006776A JP2672166B2 (en) 1990-01-16 1990-01-16 TV door phone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006776A JP2672166B2 (en) 1990-01-16 1990-01-16 TV door phone

Publications (2)

Publication Number Publication Date
JPH03211953A true JPH03211953A (en) 1991-09-17
JP2672166B2 JP2672166B2 (en) 1997-11-05

Family

ID=11647579

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006776A Expired - Fee Related JP2672166B2 (en) 1990-01-16 1990-01-16 TV door phone

Country Status (1)

Country Link
JP (1) JP2672166B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0570082U (en) * 1992-02-27 1993-09-21 アイホン株式会社 Intercom system for apartment houses

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6238683A (en) * 1985-08-14 1987-02-19 Matsushita Electric Works Ltd Door phone with monitor camera
JPH01186090A (en) * 1988-01-20 1989-07-25 Sharp Corp Multiplex system for television doorphone for multiple dwelling housing

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6238683A (en) * 1985-08-14 1987-02-19 Matsushita Electric Works Ltd Door phone with monitor camera
JPH01186090A (en) * 1988-01-20 1989-07-25 Sharp Corp Multiplex system for television doorphone for multiple dwelling housing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0570082U (en) * 1992-02-27 1993-09-21 アイホン株式会社 Intercom system for apartment houses

Also Published As

Publication number Publication date
JP2672166B2 (en) 1997-11-05

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