JP2004120236A - Doorphone system - Google Patents

Doorphone system Download PDF

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Publication number
JP2004120236A
JP2004120236A JP2002279661A JP2002279661A JP2004120236A JP 2004120236 A JP2004120236 A JP 2004120236A JP 2002279661 A JP2002279661 A JP 2002279661A JP 2002279661 A JP2002279661 A JP 2002279661A JP 2004120236 A JP2004120236 A JP 2004120236A
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JP
Japan
Prior art keywords
imaging
unit
camera
condition
master unit
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JP2002279661A
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Japanese (ja)
Inventor
Hiroshi Maruyama
丸山 弘
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Aiphone Co Ltd
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Aiphone Co Ltd
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Publication date
Application filed by Aiphone Co Ltd filed Critical Aiphone Co Ltd
Priority to JP2002279661A priority Critical patent/JP2004120236A/en
Publication of JP2004120236A publication Critical patent/JP2004120236A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a doorphone system wherein expected image quality is obtained without the need for manual operations of a camera while viewing an imaged image. <P>SOLUTION: A doorphone master unit 3, to which a camera attached doorphone slave unit 1 and a human body sensor attached camera 2 are connected, is provided with: a setting entry section 10 for setting imaging conditions such as an imaging range, an imaging interval and an imaging date and time of the camera; an imaging condition storage section 8 for storing the imaging conditions set by the setting entry section 10; and a central arithmetic section 12 for controlling imaging according to the imaging conditions stored in the imaging condition storage section 8, and further, an illuminance sensor 4 and a distance sensor 5 are connected to the doorphone master unit 3. The central arithmetic section 12 selects an optimum condition among a plurality of the setting imaging conditions by taking into account the information from the illuminance sensor 4 and the distance sensor 5 to allow the camera to perform imaging. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、来訪者を撮像するカメラを備えたドアホンシステムに関し、特に来訪者の撮影を良好に実施して防犯性能の向上を図ったドアホンシステム関する。
【0002】
【従来の技術】
近年、防犯意識の向上やコミュニケイションの多様化、更に表示部の低価格化等により、画像や映像を撮像して表示や記録を行うドアホンシステムが急速に普及している。従来のこの種のドアホンシステムに使用される撮像装置は、ドアホン親機とその内部の映像・画像記憶部、カメラ操作部、画像・映像表示部、中央演算部と、数台のカメラ付ドアホン子機や人体検知センサ付カメラ等から構成されているが、この種のカメラは撮像範囲が狭かったりカメラの台数が少ない等、カメラ部の性能がネックとなり、期待する画質を得るのが難しかった。
そのため、居室親機にカメラ操作部を設けて、居住者が来客時などに画像・映像表示部を見ながらカメラ操作部を操作して、カメラの角度変更やズーム等の操作をして期待する画質を得られるようにしていた。
【0003】
このドアホンシステムの動作は、カメラ付ドアホン子機の呼出操作や人体検知センサ付カメラのセンサ動作があったらドアホン親機へ通知する。そして、中央演算部がそれに応えてドアホン子機や人体検知センサ付カメラのカメラ等を利用可能にすると共に映像表示部に画像や映像を表示し、カメラ操作部を動作させる。カメラは、設定された撮影枚数、撮像間隔で動作し、撮像した画像・映像を画像・映像記憶部に記憶する。
尚、呼出時に居住者が映像表示部を見ながら、カメラ操作部でカメラを水平移動或いは垂直移動又はズーム操作した場合は、操作中においてのみ撮像範囲を固定的でなくすることができるし、画質に関して所定の時間間隔で所定枚数撮像し、優れた画質で撮像できる確率を上げるなどの工夫が成されていた。
【0004】
【非特許文献1】
アイホン総合カタログ2002/2003年版 p.12−15
【0005】
【発明が解決しようとする課題】
しかしながら、上記従来のドアホンシステムは呼出時に居室内でカメラ操作をして撮像画像の改善を図るようにしているが、基本的に撮像条件は固定されているため、居住者が不在の時はカメラ操作部によるカメラ操作が行えなず、所定の時間間隔で所定枚数撮像しても、例えば前回の設定のまま撮像していた。そのため、来訪者の体格やその他の理由で設定を変更しなければ期待する画質が得られない場合も、そのまま撮像を続けていた。
また、撮像対象がカメラのフレームに収まったとしても、撮影する時間帯、天候や気候、季節によっても画質は影響されるため、撮像対象を期待通りに撮像できなかった。
【0006】
そこで、上記問題点に鑑み、請求項1の発明は、撮像画像を見ながらカメラを手動操作せずとも、期待する画質を得ることを可能とすることを目的とする。また、請求項2乃至5の発明は、居住者が不在であっても良好なカメラの撮像を可能とすることを目的とし、請求項6の発明は、明るさによらず良好な撮像を行うことを目的とする。
更に、請求項7の発明は、外部条件を検知することで最適な撮像条件の自動選択を可能とすることを目的とし、請求項8の発明は、防犯性の向上を目的とする。
【0007】
【課題を解決するための手段】
上記課題を解決するため、請求項1の発明は、カメラ付ドアホン子機、人体検知センサ付カメラのうち少なくとも一つがドアホン親機と接続されて成るドアホンシステムにおいて、前記ドアホン親機は、カメラの撮像範囲や撮像間隔、撮像日時等の撮像条件を任意に設定或いは変更可能な設定変更手段と、前記設定変更手段で設定或いは変更した撮像条件を記憶する記憶手段と、前記記憶手段によって記憶された撮像条件に従って撮像の制御を行う制御手段と、を備えたことを特徴とする。
この構成により、設定した撮像条件に従ってカメラの撮像動作を制御することで、撮像画像を見ながらカメラを手動操作せずとも、期待する画質を得ることが可能となり、防犯性能を向上できる。
【0008】
請求項2の発明は、請求項1の発明において、前記ドアホン親機には、直接または公衆通信ネットワークを介して外部機器が接続され、前記外部機器には、所定の操作によりカメラの撮像範囲や撮像間隔、撮像日時等の撮像条件を設定或いは変更する外部設定変更手段が備えられて成ることを特徴とする。
この構成により、遠隔地からカメラ撮像条件の設定或いは変更ができるので、外出先からでも設定或いは変更でき、居住者が不在であっても来訪者を良好に撮像することが可能となり、防犯対策に効果的である。また、外部機器によりカメラの撮像条件を設定或いは変更できるので、ドアホン親機の構成を複雑にすることなく設定或いは変更操作ができる。
【0009】
請求項3の発明は、請求項1の発明において、前記ドアホン親機には、直接または公衆通信ネットワークを介して外部機器が接続され、前記外部機器には、所定の操作により前記ドアホン親機に備えられた前記設定変更手段を操作する操作手段が備えられて成ることを特徴とする。
この構成により、遠隔地からカメラ撮像条件の設定或いは変更ができるので、外出先からでも設定或いは変更でき、居住者が不在であっても来訪者を良好に撮像することが可能となり、防犯対策に効果的である。また、外部機器によりカメラの撮像条件を設定或いは変更できるので、ドアホン親機の構成を複雑にすることなく設定或いは変更操作ができる。
【0010】
請求項4の発明は、請求項2又は3の発明において、前記設定変更手段により複数の撮像条件が設定でき、前記記憶手段が設定した前記複数の撮像条件を記憶すると共に、前記制御手段が前記ドアホン親機或いは前記ドアホン親機に接続される外部機器の何れかの操作によって前記記憶手段から撮像条件を任意に読み出してカメラ撮像条件の設定或いは変更の制御を行うことを特徴とする。
この構成により、撮像条件記憶部には複数の撮像条件が記憶されるので、状況に応じた最良の撮像条件を選択して撮像操作できるし、設定或いは変更操作を外出先からでも実施できるため、不在時でも良好な撮像が可能である。
【0011】
請求項5の発明は、請求項2の発明において、前記外部機器の外部設定変更手段が複数の撮像条件を設定でき、前記記憶手段が設定した前記複数の撮像条件を記憶すると共に、前記制御手段が前記ドアホン親機の操作或いは前記ドアホン親機に接続される外部機器の操作によって前記撮像条件を任意に読み出してカメラ撮像条件の設定或いは変更の制御を行うことを特徴とする。
この構成により、撮像条件記憶部には複数の撮像条件が記憶されるので、状況に応じた最良の撮像条件を選択して撮像操作できるし、設定或いは変更操作を外出先からでも実施できるため、不在時でも良好な撮像が可能である。
【0012】
請求項6の発明は、請求項4又は5の発明において、前記制御手段は、前記記憶手段に記憶された複数の撮像条件のうち、予め設定した時間帯に応じた撮像条件を読み出し、自動的に撮像条件を変更する制御を行うことを特徴とし、この構成により、玄関等カメラ設置場所の明るさの変化を予測して撮像動作を制御できるので、撮像する時間によらず良好な撮像を行うことができる。
【0013】
請求項7の発明は、請求項4又は5の発明において、前記ドアホン親機は、少なくとも照度、被写体までの距離を検知する外部条件検知手段を有し、前記制御手段は前記外部条件検知手段の情報を基に前記複数の撮像条件のうちの一つを選択して撮像制御を行うことを特徴とする。
この構成により、照度等の外部条件に合わせて撮像条件を選択するので、常に最適の撮像条件を選択できる。
【0014】
請求項8の発明は、請求項1乃至7の何れかの発明において、前記制御手段は、予め決められた時刻に撮像する制御を行うことを特徴とし、この構成により、さらに防犯性を向上できる。
【0015】
【発明の実施の形態】
以下、本発明を具体化した実施の形態を、図面に基づいて詳細に説明する。図1は本発明に係るドアホンシステムの第1実施形態を示すブロック図であり、1はカメラ付ドアホン子機、2は人体検知センサ付カメラ、3はドアホン親機であり、カメラ付ドアホン子機1と人体検知センサ付カメラ2は夫々伝送線6a,6bによりドアホン親機3に接続されている。また、ドアホン親機3には外部条件検知手段として公知の照度センサ4と来訪者までの距離を測定する距離センサ5が、夫々伝送線6c,6dを介して接続されている。
【0016】
ドアホン親機3は、記憶手段としての撮像条件記憶部8、撮影した画像・映像を記憶する画像・映像記憶部9、撮像条件を設定或いは変更する設定変更手段としての設定入力部10、撮像した画像・映像を表示する画像・映像表示部11、制御手段としての中央演算部12、外部とのデータ伝送を行うインターフェイス部13等から構成され、撮像条件記憶部8には、設定入力部10を利用して、撮像する範囲や間隔、そして日時、方角、仰角、拡大率、撮影枚数、更には照度に応じた撮像条件、来訪者までの距離に応じた撮像条件等が複数設定され記憶されている。また、設定入力部10により、画像・映像記憶部から取出した画像・映像を編集することも可能となっている。尚、照度センサや距離センサは公知のものを使用すればよい。
【0017】
図2は図1のドアホンシステムの動作の流れを示すフローチャートであり、この図を基に上記構成のドアホンシステムの動作を説明する。まず、カメラ付ドアホン子機1の呼出操作や人体検知センサ付カメラ2のセンサが動作して、ドアホン親機3に通知する(ステップ1(S1))。すると、中央演算部12がその情報を受けてカメラ付ドアホン子機1や人体検知センサ付カメラ2のカメラを利用可能にし(S2)、画像・映像表示部11に画像や映像を表示する(S3)。
次に、撮像条件設定の有無を判断して(S4)、なければ予め未設定時用に用意された規定条件或いは前回の撮像条件により撮像操作する(S6)。そして、撮影した画像・映像を画像・映像記憶部9に記憶して撮像動作を終了する(S8)。
【0018】
一方、設定された撮像条件があったら(S4)、接続されている照度センサ4及び距離センサ5からの情報が有るか判断する(S5)。センサ情報がなければ、予め未設定時用に用意された規定条件或いは前回の撮像条件により撮像操作し(S6)、センサ情報があれば撮像条件記憶部8に記憶されている複数の撮像条件から適切な撮像条件を、照度センサ4や距離センサ5の情報或いは時刻を基に呼び出し、呼出した設定条件に従ってカメラ付ドアホン子機や人体検知センサ付カメラのカメラに対して指示を出して撮像する(S7)。そして、撮像した画像・映像を画像・映像記憶部9に記憶して撮像動作を終了する(S8)。
また、中央演算部12は、このフローチャートに示す動作に加えて、設定された日時に、設定された間隔及び枚数で自動撮像するよう設定されている。
【0019】
このように、カメラの撮像する範囲や間隔、そして日時、方角、仰角、拡大率、撮影枚数等の撮像条件を設定でき、設定した撮像条件に従ってカメラの撮像動作を制御できるので、カメラの設置環境に応じた最良の撮像条件を設定できるし、撮像画像を見ながらカメラを手動操作せずとも、期待する画質を得ることが可能となり、防犯性能を向上できる。
また、撮像条件記憶部には複数の撮像条件が記憶されるので、状況に応じた最良の撮像条件を選択して撮像操作でき、良好な撮像が可能である。
更に、照度センサ及び距離センサからの情報を基に撮像条件を選択することができるので、最適な撮像条件を選択でき、明るさや来訪者の体格や立ち位置等の外部条件によらず常に良好な状態で撮像できる。
【0020】
尚、上記実施の形態では外部条件検知手段として照度センサ4、距離センサ5を設けているが、そのようなセンサを設けなくとも良く、予め設定した時間帯に応じて撮像条件を自動的に変更するよう制御設定すれば、玄関等カメラ設置場所の明るさの変化を予測して撮像動作を制御するので、照度センサ等の情報を取り込まなくても明るさに応じた撮像を行うことが可能となる。
また、照度センサ4、距離センサ5に加えて、公知の温度センサ、湿度センサ、雨センサ、更には風速センサ等を外部条件検知手段として設ければ、季節や天候も判断することが可能となり、最良な撮像条件を選択でき、より鮮明な来訪者の撮像が可能となる。
【0021】
次に、本発明の第2の実施形態を説明する。図3は本発明のドアホンシステムの第2の実施形態を示すブロック図であり、図3では図1の構成に加えてドアホン親機3aが外部機器15(15a,15b)を接続可能に構成されている。尚、図1と同一の構成要素には同一の符号を付与してある。
この外部機器15は、カメラの撮像条件を設定或いは変更するために使用するためのもので、ドアホン親機3aは上記図1の構成に加えて外部機器15を接続する外部インターフェイス部16が設けられている。そして、この外部インターフェイス部16に直接外部機器である第1外部機器15aが接続され、更に外部機器として第2外部機器15bが公衆通信ネットワーク19を介して接続されている。
【0022】
第1外部機器15aは、カメラの撮像範囲や撮像間隔、或いは撮像日時等の設定或いは変更をドアホン親機3aの設定入力部10を介さず直接実施する外部設定変更手段17を備え、第2外部機器15bは、ドアホン親機3aの設定入力部10を操作する操作手段18を備えている。この外部機器15(15a,15b)は、例えばパーソナルコンピュータが使用でき、パーソナルコンピュータにより直接撮像条件を設定することができるし、パーソナルコンピュータによりドアホン親機3aの設定入力部10を操作して撮像条件を設定することもできる。また、第1外部機器15aと第2外部機器15bは交換することができるし、何れか一方を接続しさえすれば撮像条件の設定或いは変更操作はできる。
【0023】
このように、外部機器によりカメラの撮像条件を設定或いは変更できるので、遠隔地から設定或いは変更できる。そのため、居住者が不在であっても来訪者を良好に撮像することが可能となり、防犯対策に効果的である。また、ドアホン親機の構成を複雑にすることなく設定或いは変更操作できる。
【0024】
尚、上記実施の形態のドアホンシステムは、カメラ付ドアホン子機1と人体検知センサ付カメラ2を夫々1個設けているが、ドアホン親機に接続されるカメラ付機器は、カメラ付ドアホン子機1のみ1個或いは複数接続されても良いし、センサー付カメラのみが1つ或いは複数接続されても良く、同様に撮像条件を設定或いは変更することで、何れも良好に撮像操作できる。
また、撮像条件記憶部8、画像・映像記憶部9、設定入力部10等をドアホン親機3に設けているが、そのうちの一部或いは全てを、カメラ付ドアホン子機1、人体検知センサ付カメラ2、照度センサ4、距離センサ5、更には外部機器15a,15bの何れかに設けることもできる。
【0025】
【発明の効果】
以上詳述したように、本発明によれば、撮像画像を見ながらカメラを手動操作することなく、期待する画質を得ることができるし、撮像対象である来訪者の体格や立ち位置によらず、更には時間帯、天候や気候に影響を受けずにカメラの撮像を期待通りに行うことが可能となる。更には居住者が不在であっても良好なカメラの撮像操作が可能となり、防犯性能の向上を図ることができる。
【図面の簡単な説明】
【図1】本発明に係るドアホンシステムの第1の実施形態を示すブロック図である。
【図2】図1のドアホンシステムの動作の流れを示すフローチャートである。
【図3】本発明の第2の実施形態を示すドアホンシステムのブロック図である。
【符号の説明】
1・・カメラ付ドアホン子機、2・・人体検知センサ付カメラ、3,3a・・ドアホン親機、4・・照度センサ、5・・距離センサ、6a,6b,6c,6d・・伝送線、8・・撮像条件記憶部、9・・画像・映像記憶部、10・・設定変更手段としての設定入力部、11・・画像・映像表示部、12・・制御手段としての中央演算部、15(15a,15b)・・外部機器、17・・外部設定変更手段、18・・操作手段、19・・公衆通信ネットワーク。
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a door phone system provided with a camera for capturing a visitor, and more particularly to a door phone system for improving the security performance by taking a good picture of a visitor.
[0002]
[Prior art]
2. Description of the Related Art In recent years, intercom systems that capture and display and record images and videos are rapidly spreading due to an increase in crime prevention awareness, diversification of communication, and a reduction in the price of a display unit. An image pickup device used in a conventional door phone system of this type includes a door phone master unit and an internal video / image storage unit, a camera operation unit, an image / video display unit, a central processing unit, and several door phone units with a camera. However, this type of camera has a bottleneck in the performance of the camera unit, such as a narrow imaging range and a small number of cameras, and it has been difficult to obtain expected image quality.
For this reason, a camera operation unit is provided in the parent device of the living room, and the resident operates the camera operation unit while looking at the image / video display unit when visiting, etc., and expects to perform operations such as changing the angle of the camera and zooming. I was trying to get the image quality.
[0003]
The operation of the intercom system is notified to the intercom master unit when there is a call operation of the intercom unit with camera or the sensor operation of the camera with the human body detection sensor. In response, the central processing unit makes available a door phone handset, a camera with a human body detection sensor, and the like, displays an image and a video on the video display unit, and operates the camera operation unit. The camera operates at the set number of shots and the shooting interval, and stores the shot image / video in the image / video storage unit.
If the resident moves the camera horizontally or vertically or zooms with the camera operation unit while viewing the video display unit at the time of calling, the imaging range can be made not fixed only during the operation, and the image quality can be improved. With respect to, a certain number of images have been taken at predetermined time intervals to increase the probability that images can be taken with excellent image quality.
[0004]
[Non-patent document 1]
Aiphone General Catalog 2002/2003 Edition p. 12-15
[0005]
[Problems to be solved by the invention]
However, the above conventional door phone system operates the camera in the living room at the time of calling to improve the captured image, but since the imaging conditions are basically fixed, when the resident is absent, the camera is not used. Even if a camera operation cannot be performed by the operation unit and a predetermined number of images are taken at predetermined time intervals, for example, an image is taken with the previous setting. Therefore, even when the expected image quality cannot be obtained unless the setting is changed due to the physique of the visitor or other reasons, the imaging is continued as it is.
Further, even if the object to be imaged falls within the frame of the camera, the image quality is affected by the time zone of shooting, the weather, the climate, and the season.
[0006]
In view of the above problems, it is an object of the invention of claim 1 to make it possible to obtain an expected image quality without manually operating a camera while watching a captured image. Further, the inventions of claims 2 to 5 aim at enabling good camera imaging even when a resident is absent, and the invention of claim 6 performs good imaging regardless of brightness. The purpose is to:
A seventh object of the present invention is to enable automatic selection of an optimal imaging condition by detecting an external condition, and an eighth object of the present invention is to improve security.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention according to claim 1 is a door phone system in which at least one of a door phone slave unit with a camera and a camera with a human body detection sensor is connected to a door phone master unit, wherein the door phone master unit is a camera. A setting change unit that can arbitrarily set or change an imaging condition such as an imaging range, an imaging interval, and an imaging date and time; a storage unit that stores the imaging condition set or changed by the setting change unit; and a storage unit that stores the imaging condition. Control means for controlling the imaging in accordance with the imaging conditions.
With this configuration, by controlling the imaging operation of the camera in accordance with the set imaging conditions, it is possible to obtain the expected image quality without manually operating the camera while viewing the captured image, thereby improving the security performance.
[0008]
According to a second aspect of the present invention, in the first aspect of the present invention, an external device is connected to the intercom master unit directly or via a public communication network, and the external device is connected to the external device by a predetermined operation. An external setting change unit for setting or changing an imaging condition such as an imaging interval and an imaging date and time is provided.
With this configuration, camera imaging conditions can be set or changed from a remote location, so that settings can be made or changed even when the user is away from home. It is effective. Further, since the imaging conditions of the camera can be set or changed by the external device, the setting or changing operation can be performed without complicating the configuration of the door phone master unit.
[0009]
According to a third aspect of the present invention, in the first aspect of the invention, an external device is connected to the intercom master device directly or via a public communication network, and the external device is connected to the intercom master device by a predetermined operation. An operating means for operating the provided setting changing means is provided.
With this configuration, camera imaging conditions can be set or changed from a remote location, so that settings can be made or changed even when the user is away from home. It is effective. Further, since the imaging conditions of the camera can be set or changed by the external device, the setting or changing operation can be performed without complicating the configuration of the door phone master unit.
[0010]
According to a fourth aspect of the present invention, in the second or third aspect, the plurality of imaging conditions can be set by the setting change unit, and the plurality of imaging conditions set by the storage unit are stored. The imaging condition is arbitrarily read from the storage unit by operation of either the intercom master unit or an external device connected to the intercom master unit, and setting or changing of the camera imaging condition is controlled.
With this configuration, a plurality of imaging conditions are stored in the imaging condition storage unit, so that the best imaging condition according to the situation can be selected and the imaging operation can be performed, and the setting or change operation can be performed even when going out. Good imaging is possible even when absent.
[0011]
According to a fifth aspect of the present invention, in the second aspect of the invention, the external setting change means of the external device can set a plurality of imaging conditions, the storage means stores the plurality of imaging conditions set, and the control means Is characterized in that the imaging condition is arbitrarily read by operating the intercom master device or an external device connected to the intercom master device, and setting or changing the camera imaging condition is controlled.
With this configuration, a plurality of imaging conditions are stored in the imaging condition storage unit, so that the best imaging condition according to the situation can be selected and the imaging operation can be performed, and the setting or change operation can be performed even when going out. Good imaging is possible even when absent.
[0012]
According to a sixth aspect of the present invention, in the fourth or fifth aspect, the control unit reads out an imaging condition corresponding to a preset time zone from among a plurality of imaging conditions stored in the storage unit, and automatically reads out the imaging condition. In this configuration, the imaging operation can be controlled by predicting a change in the brightness of a camera installation location such as a door, so that good imaging can be performed regardless of the imaging time. be able to.
[0013]
According to a seventh aspect of the present invention, in the invention of the fourth or fifth aspect, the intercom master unit has an external condition detecting means for detecting at least illuminance and a distance to a subject, and the control means has a function of the external condition detecting means. The imaging control is performed by selecting one of the plurality of imaging conditions based on information.
With this configuration, the imaging condition is selected according to external conditions such as illuminance, so that the optimal imaging condition can always be selected.
[0014]
According to an eighth aspect of the present invention, in any one of the first to seventh aspects of the present invention, the control unit performs control for imaging at a predetermined time, and this configuration can further improve security. .
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a first embodiment of a door phone system according to the present invention, wherein 1 is a door phone slave unit with a camera, 2 is a camera with a human body detection sensor, 3 is a door phone master unit, and a door phone slave unit with a camera. 1 and the camera 2 with a human body detection sensor are connected to the intercom master unit 3 by transmission lines 6a and 6b, respectively. Further, the door phone master unit 3 is connected to a known illuminance sensor 4 as external condition detecting means and a distance sensor 5 for measuring a distance to a visitor via transmission lines 6c and 6d, respectively.
[0016]
The intercom master unit 3 includes an imaging condition storage unit 8 as a storage unit, an image / video storage unit 9 for storing a captured image / video, a setting input unit 10 as a setting change unit for setting or changing an imaging condition, and capturing an image. An image / video display unit 11 for displaying images / videos, a central processing unit 12 as control means, an interface unit 13 for data transmission with the outside, and the like. Utilizing, a plurality of imaging ranges and intervals, and date and time, a direction, an elevation angle, an enlargement ratio, the number of images, an imaging condition according to illuminance, an imaging condition according to a distance to a visitor, and the like are set and stored. I have. The setting input unit 10 can also edit images / videos taken out of the image / video storage unit. In addition, what is necessary is just to use a well-known thing as an illuminance sensor and a distance sensor.
[0017]
FIG. 2 is a flowchart showing the operation flow of the intercom system of FIG. 1. The operation of the intercom system having the above configuration will be described with reference to FIG. First, the calling operation of the intercom slave unit 1 with the camera and the sensor of the camera 2 with the human body detection sensor operate to notify the intercom master unit 3 (step 1 (S1)). Then, the central processing unit 12 receives the information and makes the camera of the intercom unit with camera 1 and the camera with the human body detection sensor 2 available (S2), and displays an image or video on the image / video display unit 11 (S3). ).
Next, it is determined whether or not an imaging condition has been set (S4). If not, an imaging operation is performed according to a prescribed condition prepared for a non-setting time or the previous imaging condition (S6). Then, the captured image / video is stored in the image / video storage unit 9 and the image capturing operation ends (S8).
[0018]
On the other hand, if there is the set imaging condition (S4), it is determined whether there is information from the connected illuminance sensor 4 and distance sensor 5 (S5). If there is no sensor information, the imaging operation is performed under the specified conditions prepared for the unset time or the previous imaging condition (S6), and if there is the sensor information, a plurality of imaging conditions stored in the imaging condition storage unit 8 are used. Appropriate imaging conditions are called up based on the information or time of the illuminance sensor 4 and the distance sensor 5, and instructions are issued to the cameras of the intercom unit with camera and the camera of the human body detection sensor according to the called setting conditions to take images ( S7). Then, the captured image / video is stored in the image / video storage unit 9 and the image capturing operation ends (S8).
In addition to the operations shown in this flowchart, the central processing unit 12 is set so as to automatically capture images at a set date and time at a set interval and a set number.
[0019]
As described above, it is possible to set the imaging range and interval of the camera, and the imaging conditions such as date and time, direction, elevation angle, enlargement ratio, number of images, and the like, and control the imaging operation of the camera according to the set imaging conditions. It is possible to set the best imaging conditions according to the conditions, and to obtain the expected image quality without manually operating the camera while viewing the captured image, thereby improving the security performance.
Further, since a plurality of imaging conditions are stored in the imaging condition storage unit, the best imaging condition according to the situation can be selected to perform an imaging operation, and good imaging can be performed.
Furthermore, since the imaging conditions can be selected based on the information from the illuminance sensor and the distance sensor, the optimal imaging conditions can be selected, and always favorable irrespective of external conditions such as brightness, the physique of the visitor, and the standing position. Images can be taken in the state.
[0020]
In the above embodiment, the illuminance sensor 4 and the distance sensor 5 are provided as the external condition detecting means. However, such sensors need not be provided, and the imaging condition is automatically changed according to a preset time zone. If it is set to control, the imaging operation is controlled by predicting the change in the brightness of the camera installation location such as the entrance, so it is possible to perform imaging according to the brightness without taking in information such as an illuminance sensor etc. Become.
In addition, in addition to the illuminance sensor 4 and the distance sensor 5, if a known temperature sensor, humidity sensor, rain sensor, and wind speed sensor are provided as external condition detecting means, it is possible to determine the season and the weather. The best imaging conditions can be selected, and a clearer image of a visitor can be obtained.
[0021]
Next, a second embodiment of the present invention will be described. FIG. 3 is a block diagram showing a second embodiment of the door phone system of the present invention. In FIG. 3, in addition to the configuration of FIG. 1, the door phone master unit 3a is configured to be able to connect external devices 15 (15a, 15b). ing. The same components as those in FIG. 1 are denoted by the same reference numerals.
The external device 15 is used for setting or changing the imaging conditions of the camera. The door phone master unit 3a is provided with an external interface unit 16 for connecting the external device 15 in addition to the configuration of FIG. ing. A first external device 15a, which is an external device, is directly connected to the external interface unit 16, and a second external device 15b is connected via the public communication network 19 as an external device.
[0022]
The first external device 15a includes an external setting change unit 17 that directly sets or changes an imaging range, an imaging interval, an imaging date, and the like of the camera without using the setting input unit 10 of the intercom master unit 3a. The device 15b includes operation means 18 for operating the setting input unit 10 of the door phone master unit 3a. As the external devices 15 (15a, 15b), for example, a personal computer can be used, and the imaging conditions can be directly set by the personal computer, or the imaging conditions can be set by operating the setting input unit 10 of the intercom master unit 3a by the personal computer. Can also be set. Further, the first external device 15a and the second external device 15b can be exchanged, and the setting or changing operation of the imaging condition can be performed only by connecting one of them.
[0023]
As described above, since the imaging condition of the camera can be set or changed by the external device, it can be set or changed from a remote place. Therefore, even if the resident is absent, it is possible to image the visitor satisfactorily, which is effective for security measures. Also, setting or changing operation can be performed without complicating the configuration of the door phone master unit.
[0024]
The door phone system according to the above-described embodiment is provided with a door phone slave unit 1 with a camera and a camera 2 with a human body detection sensor, respectively. One or a plurality of cameras may be connected, or only one or more cameras with sensors may be connected. Similarly, by setting or changing the imaging conditions, any of the imaging operations can be performed well.
In addition, an imaging condition storage unit 8, an image / video storage unit 9, a setting input unit 10, and the like are provided in the door phone master unit 3, and a part or all of them are provided with a door phone slave unit 1 with a camera and a human body detection sensor. It can be provided in the camera 2, the illuminance sensor 4, the distance sensor 5, and any one of the external devices 15a and 15b.
[0025]
【The invention's effect】
As described in detail above, according to the present invention, it is possible to obtain the expected image quality without manually operating the camera while viewing the captured image, and regardless of the physique or standing position of the visitor to be imaged. In addition, it is possible to perform imaging with a camera as expected without being affected by time, weather, or climate. Furthermore, even if a resident is absent, it is possible to perform a good imaging operation with a camera, and it is possible to improve security performance.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a first embodiment of a door phone system according to the present invention.
FIG. 2 is a flowchart showing a flow of operation of the door phone system of FIG.
FIG. 3 is a block diagram of a door phone system according to a second embodiment of the present invention.
[Explanation of symbols]
1. Doorphone slave unit with camera, 2. Camera with human body detection sensor, 3, 3a Doorphone master unit, 4. Illuminance sensor, 5. Distance sensor, 6a, 6b, 6c, 6d Transmission line ..., Imaging condition storage unit, 9 image / video storage unit, 10 / setting input unit as setting change unit, 11 / image / video display unit, 12 central processing unit as control unit, 15 (15a, 15b) · · · external equipment, 17 · · · · external setting change means, 18 · · · operation means, 19 · · · public communication network.

Claims (8)

カメラ付ドアホン子機、人体検知センサ付カメラのうち少なくとも一つがドアホン親機と接続されて成るドアホンシステムにおいて、
前記ドアホン親機は、カメラの撮像範囲や撮像間隔、撮像日時等の撮像条件を任意に設定或いは変更可能な設定変更手段と、前記設定変更手段で設定或いは変更した撮像条件を記憶する記憶手段と、前記記憶手段によって記憶された撮像条件に従って撮像の制御を行う制御手段と、を備えたことを特徴とするドアホンシステム。
In a door phone system in which at least one of a camera-equipped door phone slave unit and a camera with a human body detection sensor is connected to a door phone master unit,
The intercom master unit includes a setting change unit that can arbitrarily set or change an imaging condition such as an imaging range, an imaging interval, and an imaging date and time of a camera, and a storage unit that stores the imaging condition set or changed by the setting change unit. And a control unit for controlling the imaging in accordance with the imaging conditions stored by the storage unit.
前記ドアホン親機には、直接または公衆通信ネットワークを介して外部機器が接続され、前記外部機器には、所定の操作によりカメラの撮像範囲や撮像間隔、撮像日時等の撮像条件を設定或いは変更する外部設定変更手段が備えられて成る請求項1記載のドアホンシステム。An external device is connected to the intercom master unit directly or via a public communication network, and the external device sets or changes an imaging condition such as an imaging range, an imaging interval, and an imaging date and time of a camera by a predetermined operation. 2. The intercom system according to claim 1, further comprising external setting change means. 前記ドアホン親機には、直接または公衆通信ネットワークを介して外部機器が接続され、前記外部機器には、所定の操作により前記ドアホン親機に備えられた前記設定変更手段を操作する操作手段が備えられて成る請求項1記載のドアホンシステム。An external device is connected to the intercom master unit directly or via a public communication network, and the external device includes an operation unit that operates the setting change unit provided in the intercom master unit by a predetermined operation. The doorphone system according to claim 1, wherein the doorphone system is provided. 前記設定変更手段により複数の撮像条件が設定でき、前記記憶手段が設定した前記複数の撮像条件を記憶すると共に、前記制御手段が前記ドアホン親機或いは前記ドアホン親機に接続される外部機器の何れかの操作によって前記記憶手段から撮像条件を任意に読み出してカメラ撮像条件の設定或いは変更の制御を行う請求項2又は3記載のドアホンシステム。A plurality of imaging conditions can be set by the setting change unit, and the storage unit stores the plurality of imaging conditions set, and the control unit controls the intercom master unit or an external device connected to the intercom master unit. 4. The intercom system according to claim 2, wherein the image pickup condition is arbitrarily read from the storage means by the operation to control setting or changing of the camera image pickup condition. 前記外部機器の外部設定変更手段が複数の撮像条件を設定でき、前記記憶手段が設定した前記複数の撮像条件を記憶すると共に、前記制御手段が前記ドアホン親機の操作或いは前記ドアホン親機に接続される外部機器の操作によって前記撮像条件を任意に読み出してカメラ撮像条件の設定或いは変更の制御を行う請求項2記載のドアホンシステム。The external setting change means of the external device can set a plurality of imaging conditions, the storage means stores the plurality of imaging conditions set, and the control means operates the intercom master unit or connects to the intercom master unit. 3. The door phone system according to claim 2, wherein the imaging condition is read out arbitrarily by an operation of an external device to be performed to control setting or changing of a camera imaging condition. 前記制御手段は、前記記憶手段に記憶された複数の撮像条件のうち、予め設定した時間帯に応じた撮像条件を読み出し、自動的に撮像条件を変更する制御を行う請求項4又は5記載のドアホンシステム。6. The control unit according to claim 4, wherein the control unit reads out an imaging condition corresponding to a preset time zone from among the plurality of imaging conditions stored in the storage unit, and performs control for automatically changing the imaging condition. Door phone system. 前記ドアホン親機は、少なくとも照度、被写体までの距離を検知する外部条件検知手段を有し、前記制御手段は前記外部条件検知手段の情報を基に前記複数の撮像条件のうちの一つを選択して撮像制御を行う請求項4又は5記載のドアホンシステム。The intercom master unit has at least illuminance and external condition detecting means for detecting a distance to a subject, and the control means selects one of the plurality of imaging conditions based on information of the external condition detecting means. The door phone system according to claim 4, wherein image pickup control is performed by performing the control. 前記制御手段は、予め決められた時刻に撮像する制御を行う請求項1乃至7の何れかに記載のドアホンシステム。The intercom system according to any one of claims 1 to 7, wherein the control unit performs control for imaging at a predetermined time.
JP2002279661A 2002-09-25 2002-09-25 Doorphone system Pending JP2004120236A (en)

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