JPH10224774A - Supervisory camera equipment - Google Patents

Supervisory camera equipment

Info

Publication number
JPH10224774A
JPH10224774A JP9019366A JP1936697A JPH10224774A JP H10224774 A JPH10224774 A JP H10224774A JP 9019366 A JP9019366 A JP 9019366A JP 1936697 A JP1936697 A JP 1936697A JP H10224774 A JPH10224774 A JP H10224774A
Authority
JP
Japan
Prior art keywords
video
signal
video signal
circuit
signals
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP9019366A
Other languages
Japanese (ja)
Inventor
Toshimi Yasui
俊美 安井
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.)
Aiphone Co Ltd
Original Assignee
Aiphone Co Ltd
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 Aiphone Co Ltd filed Critical Aiphone Co Ltd
Priority to JP9019366A priority Critical patent/JPH10224774A/en
Publication of JPH10224774A publication Critical patent/JPH10224774A/en
Pending legal-status Critical Current

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  • Closed-Circuit Television Systems (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

PROBLEM TO BE SOLVED: To simplify an installation work of the supervisory camera equipment. SOLUTION: In the case that a synchronizing signal S1 from a synchronizing signal generating circuit 29 is in time division and fed assigned to each of supervisory cameras 11-14, each of the supervisory cameras 11-14 outputs video signals S21-S24 for each field synchronously with the synchronizing signal S1. The video signals S21-S24 are synthesized into a video signal synthesis signal S2, which is sent through a couple of transmission lines 40 and given to an image reproduction distribution device 20. The synthesis video signal S2 is digitized and distributed to video distribution signals S51-S54 synchronously with the synchronizing signal S1 and written in video memories 23-26 by a video signal distribution circuit S2. The written video distribution signals S51-S54 are read synchronously with the synchronizing signal S1 by a video memory circuit 27 and converted into analog signals and displayed on a monitor television receiver 30 via a transmission line 50.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は、異なる場所に設置され
た複数の監視カメラを備えた監視カメラ装置に関し、特
に、各監視カメラから出力される映像の伝送を1対の伝
送線で伝送し得る監視カメラ装置に係わる。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surveillance camera device having a plurality of surveillance cameras installed at different places, and more particularly, to transmitting a video output from each surveillance camera via a pair of transmission lines. The present invention relates to a surveillance camera device.

【0002】[0002]

【従来技術】従来から、異なる場所に設置された複数の
監視カメラからの映像を1箇所に設けられたモニタテレ
ビでモニタ可能な監視カメラ装置が知られている。この
種の監視カメラ装置としては、図5に示すように、複数
の監視カメラ、例えば4台の監視カメラ11〜14と、
各監視カメラ11〜14から出力される映像を時分割処
理する分割表示装置60と、分割表示装置60からの出
力を出画する1台のモニタテレビ30とを設けたものが
あった。
2. Description of the Related Art Conventionally, there has been known a surveillance camera device capable of monitoring images from a plurality of surveillance cameras installed at different locations on a monitor television provided at one location. As shown in FIG. 5, this type of surveillance camera device includes a plurality of surveillance cameras, for example, four surveillance cameras 11 to 14,
In some cases, a split display device 60 that performs time-division processing on the video output from each of the monitoring cameras 11 to 14 and one monitor television 30 that outputs an output from the split display device 60 are provided.

【0003】分割表示装置60には、各監視カメラ11
〜14にそれぞれ伝送線41〜44を介して接続される
A/D変換回路61〜64と、各A/D変換回路61〜
64に接続される映像メモリ65〜68と、映像メモリ
65〜68に接続される映像メモリ読込回路69と、映
像メモリ読込回路69に接続されるD/A変換回路70
が設けられ、D/A変換回路70は伝送線50を介して
モニタテレビ30に接続される。
[0003] Each of the monitoring cameras 11
To A / D conversion circuits 61 to 64 connected to transmission lines 41 to 44, respectively, and A / D conversion circuits 61 to 64 respectively.
64, a video memory reading circuit 69 connected to the video memories 65 to 68, and a D / A conversion circuit 70 connected to the video memory reading circuit 69.
Is provided, and the D / A conversion circuit 70 is connected to the monitor television 30 via the transmission line 50.

【0004】このような構成の監視カメラ装置において
は、各監視カメラ11〜14によって撮像された映像は
アナログ信号として出力され、それぞれ伝送線41〜4
4を伝送されて各監視カメラ11〜14毎に対応して設
けられるA/D変換回路61〜64に入力され、デジタ
ル信号に変換される。各A/D変換回路61〜64から
出力されるデジタル信号は、それぞれ映像メモリ65〜
68に入力され、書込まれる。各監視カメラ11〜14
によって撮像された映像をモニタする場合、各映像メモ
リ65〜68に書込まれたデジタル信号が、映像メモリ
読込回路69によって間引き走査により読込まれ、D/
A変換回路70に出力される。D/A変換回路70でア
ナログ信号に変換され、伝送線50を伝送されて、モニ
タテレビ30に送出される。モニタテレビ30において
監視カメラ11〜14で撮像されたそれぞれの映像がモ
ニタテレビ30の画面を4分割されて出画される。
In the surveillance camera device having such a configuration, images picked up by the respective surveillance cameras 11 to 14 are output as analog signals, and are transmitted through transmission lines 41 to 4 respectively.
4 are transmitted and input to A / D conversion circuits 61 to 64 provided corresponding to each of the monitoring cameras 11 to 14, and are converted into digital signals. The digital signals output from the A / D conversion circuits 61 to 64 are respectively stored in the video memories 65 to 65.
68 is entered and written. Each monitoring camera 11-14
In the case of monitoring the image captured by the digital camera, the digital signal written in each of the video memories 65 to 68 is read by the video memory reading circuit 69 by thinning scanning,
The signal is output to the A conversion circuit 70. The signal is converted into an analog signal by the D / A conversion circuit 70, transmitted through the transmission line 50, and transmitted to the monitor television 30. Each image captured by the monitoring cameras 11 to 14 on the monitor television 30 is output by dividing the screen of the monitor television 30 into four parts.

【0005】[0005]

【発明が解決しようとする課題】しかしながら、このよ
うな監視カメラ装置においては、各監視カメラ11〜1
4で撮像され分割表示装置60に送出される映像信号
は、各監視カメラからの出力毎にA/D変換し、映像メ
モリ65〜68に書込まれるようになっているため、設
置カメラの数に対応した伝送線41〜44を必要とし、
配線工事に労力を要し効率が悪かった。
However, in such a surveillance camera device, each of the surveillance cameras 11 to 1 is required.
The video signal imaged at 4 and sent to the split display device 60 is A / D converted for each output from each monitoring camera, and written into the video memories 65 to 68. Requires transmission lines 41 to 44 corresponding to
Wiring was labor-intensive and inefficient.

【0006】本発明は上記課題を解決するためになされ
たものであって、各監視カメラ毎の伝送線を不要とし、
1対の伝送線で映像信号を伝送できるため、設置工事を
容易に行うことができる監視カメラ装置を提供すること
を目的とする。
SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and eliminates the need for a transmission line for each monitoring camera.
An object of the present invention is to provide a surveillance camera device capable of easily performing installation work because a video signal can be transmitted through a pair of transmission lines.

【0007】[0007]

【課題を解決するための手段】このような目的を達成す
る本発明の監視カメラ装置は、複数の監視カメラからの
映像をカメラ映像合成装置で映像合成して1対の伝送線
で伝送し画面再生分割装置で画面再生分割し、画面再生
分割された映像信号を画面分割してモニタ装置で出画す
る監視カメラ装置であって、カメラ映像合成装置は、画
面再生分割装置の同期信号発生回路から伝送されてきた
各監視カメラに割当てられた同期信号を分配して各監視
カメラにそれぞれ供給する同期信号分配回路と、複数の
監視カメラから送出されてきた1フィールド分の映像信
号を多重して1つの映像信号として合成する映像信号合
成回路とを備え、画面再生分割装置は、映像信号合成回
路から伝送線を介して伝送されてきた映像信号をA/D
変換するA/D変換器と、A/D変換された映像信号を
各監視カメラに割当てられた同期信号とそれぞれ同期さ
れた選択信号と論理積が取られフィールド毎に分割して
映像信号を分配する映像信号分配回路と、映像信号分配
回路から出力された映像信号をそれぞれ書込む映像メモ
リと、映像メモリに書込まれた映像信号を同期信号と同
期した間引き走査により順次読込む映像メモリ読込回路
と、映像メモリ読込回路で読込まれた映像信号を同期信
号と同期してD/A変換しモニタ装置で画面分割して出
画するD/A変換回路とを備えたものである。
A surveillance camera device according to the present invention which achieves the above object is a system for synthesizing images from a plurality of surveillance cameras with a camera image synthesizing device and transmitting the synthesized images via a pair of transmission lines. A surveillance camera device which performs screen reproduction division by a reproduction division device, divides the screen reproduction divided video signal into a screen, and outputs the divided image signal to a monitor device. A synchronizing signal distribution circuit that distributes the transmitted synchronizing signal assigned to each surveillance camera and supplies the synchronizing signal to each surveillance camera, and multiplexes the video signal for one field transmitted from the plurality of surveillance cameras into one. And a video signal synthesizing circuit for synthesizing the video signal as one video signal.
An A / D converter for conversion, and a logical product of the A / D converted video signal and a synchronizing signal assigned to each surveillance camera and a selection signal synchronized with each other, are divided for each field, and the video signal is distributed. Video signal distribution circuit, a video memory for writing video signals output from the video signal distribution circuit, and a video memory reading circuit for sequentially reading video signals written in the video memory by thinning-out scanning synchronized with a synchronization signal And a D / A conversion circuit that D / A converts the video signal read by the video memory reading circuit in synchronization with the synchronization signal, divides the screen by the monitor device, and outputs the image.

【0008】複数の監視カメラからの映像をカメラ映像
合成装置で映像合成して、画面再生分割装置に出力し、
画面再生分割装置で画面再生分割し、画面再生分割され
た映像信号を画面分割してモニタ装置で出画するため、
監視カメラからの映像信号は1対の伝送線で伝送するこ
とができる。このため、監視カメラの設置工事を簡略化
することができる。
[0008] Images from a plurality of surveillance cameras are synthesized by a camera image synthesizing device and output to a screen reproduction and division device.
In order to divide the screen signal by the screen reproduction division device and divide the screen signal by the screen reproduction and display it on the monitor device,
Video signals from the surveillance camera can be transmitted over a pair of transmission lines. For this reason, installation work of the monitoring camera can be simplified.

【0009】[0009]

【発明の実施の形態】本発明の監視カメラ装置を適用し
た一実施形態について、図面を参照して説明する。監視
カメラ装置は、図1に示すように、所望の箇所に設置さ
れる監視カメラ11〜14と、監視カメラ11〜14か
らの映像信号を入力し、伝送線40に送出するカメラ映
像合成装置10と、カメラ映像合成装置10から送出さ
れる映像信号を再生し、伝送線50に出力する画面再生
分割装置20と、画面再生分割装置20からの映像を出
画するモニタテレビ30とを備えたものである。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment to which a surveillance camera device of the present invention is applied will be described with reference to the drawings. As shown in FIG. 1, the surveillance camera device includes surveillance cameras 11 to 14 installed at desired locations, and a camera image synthesizing device 10 that inputs video signals from the surveillance cameras 11 to 14 and transmits the signals to a transmission line 40. A screen reproducing / splitting device 20 for reproducing a video signal transmitted from the camera video synthesizing device 10 and outputting the video signal to the transmission line 50; and a monitor television 30 for outputting a video from the screen reproducing / splitting device 20. It is.

【0010】カメラ映像合成装置10には、画面再生分
割装置20に設けられる同期信号発生回路29から出力
され伝送線45で伝送される同期信号S1が入力される
同期信号分配回路16が設けられる。同期信号分配回路
16は、図2に示すように、同期信号S1を時分割して
分割同期信号S11〜S14として、各監視カメラ11〜1
4に割当て、それぞれの監視カメラ11〜14に分配し
て供給する。
The camera image synthesizing apparatus 10 is provided with a synchronizing signal distribution circuit 16 to which a synchronizing signal S1 output from a synchronizing signal generating circuit 29 provided in the screen reproducing and dividing apparatus 20 and transmitted through a transmission line 45 is input. As shown in FIG. 2, the synchronization signal distribution circuit 16 time-divides the synchronization signal S1 and divides the synchronization signal S1 into divided synchronization signals S11 to S14.
4 and distributed and supplied to the respective monitoring cameras 11 to 14.

【0011】このような分割同期信号S11〜S14がそれ
ぞれ供給された各監視カメラ11〜14においては、図
3に示すように、分割同期信号S11〜S14に同期して1
フィールド毎に映像信号S21〜S24を出力するようにな
っている。更に、カメラ映像合成装置10には監視カメ
ラ11〜14から出力される映像信号を入力する映像信
号合成回路15が設けられる。映像信号合成回路15
は、分割同期信号S11〜S14に同期して各監視カメラ1
1〜14から出力される1フィールドの映像信号S21〜
S24を、時分割多重化し1つの合成映像信号S2に合成
し、伝送線40に出力するものである。
In each of the surveillance cameras 11 to 14 supplied with such divided synchronization signals S11 to S14, as shown in FIG. 3, one is synchronized with the divided synchronization signals S11 to S14.
The video signals S21 to S24 are output for each field. Further, the camera image synthesizing device 10 is provided with an image signal synthesizing circuit 15 for inputting image signals output from the monitoring cameras 11 to 14. Video signal synthesis circuit 15
Are synchronized with the division synchronization signals S11 to S14.
1 field video signals S21 to
S24 is time-division multiplexed, combined into one combined video signal S2, and output to the transmission line 40.

【0012】1対の伝送線40は各監視カメラ11〜1
4からの映像信号が1つに合成された合成映像信号S2
を伝送する。画面再生分割装置20には、このようなカ
メラ映像合成装置10から伝送線40を介して伝送され
た合成映像信号S2をデジタル信号に変換し、デジタル
合成映像信号S3を出力するA/D変換器であるA/D
変換回路21が設けられる。更に、画面再生分割装置2
0には、A/D変換回路21に接続されると共に、同期
信号発生回路29に接続される映像信号分配回路22が
設けられる。映像信号分配回路22は、A/D変換回路
21からデジタル合成映像信号S3が入力されると共
に、同期信号発生回路29から出力される選択信号S4
が入力される。選択信号S4は、時分割された分割選択
信号S41〜S44からなり、図4に示すように、分割選択
信号S41〜S44は各監視カメラ11〜14に割当てられ
た分割同期信号S11〜S14とそれぞれ同期した信号であ
る。映像信号分配回路22において、各分割選択信号S
41〜S44とデジタル合成映像信号S3との理論積が取ら
れ、デジタル合成映像信号S3から選択信号S41〜S44
に応じて抽出された信号は、監視カメラ11〜14から
1フィールド毎に出力される各映像信号に対応した映像
分配信号S51〜S54として出力される。映像信号分配回
路22の出力側には、映像メモリ23〜26が接続さ
れ、映像分配信号S51〜S54がそれぞれ入力され、書込
まれるようになっている。更に、映像メモリ23〜26
には映像メモリ読込回路27が接続される。映像メモリ
読込回路27には、選択信号S4と同期した選択信号S6
が同期信号発生回路29から入力されると、対応する各
映像メモリ23〜26から書込まれた映像分配信号S51
〜S54を選択信号S6に同期して間引き走査により順次
読込み、デジタル映像メモリ出力信号S7を出力するも
のである。映像メモリ読込回路27に接続されるD/A
変換回路28は、同期信号発生回路29に接続され、映
像メモリ読込回路27から出力されるデジタル映像メモ
リ出力信号S7と、同期信号発生回路29から出力され
る選択信号S6と同期した選択信号S8とが入力される
と、選択信号S8に同期してデジタル映像メモリ出力信
号S7をアナログ変換し、アナログ映像メモリ出力信号
S9として出力するようになっている。
A pair of transmission lines 40 are connected to the respective monitoring cameras 11-1.
4 is a composite video signal S2 in which the video signals from
Is transmitted. An A / D converter that converts the composite video signal S2 transmitted from the camera video composition device 10 via the transmission line 40 into a digital signal and outputs the digital composite video signal S3 A / D
A conversion circuit 21 is provided. Further, the screen reproduction division device 2
At 0, a video signal distribution circuit 22 connected to the A / D conversion circuit 21 and to the synchronization signal generation circuit 29 is provided. The video signal distribution circuit 22 receives the digital composite video signal S3 from the A / D conversion circuit 21 and the selection signal S4 output from the synchronization signal generation circuit 29.
Is entered. The selection signal S4 is composed of time-divided division selection signals S41 to S44. As shown in FIG. 4, the division selection signals S41 to S44 correspond to the division synchronization signals S11 to S14 assigned to the respective monitoring cameras 11 to 14, respectively. It is a synchronized signal. In the video signal distribution circuit 22, each divided selection signal S
The logical product of the digital composite video signal S3 and the digital composite video signal S3 is calculated, and the selection signals S41 to S44 are obtained from the digital composite video signal S3.
Are output as video distribution signals S51 to S54 corresponding to the respective video signals output from the monitoring cameras 11 to 14 for each field. Video memories 23 to 26 are connected to the output side of the video signal distribution circuit 22, and video distribution signals S51 to S54 are input and written, respectively. Further, the video memories 23 to 26
Is connected to a video memory reading circuit 27. The video memory reading circuit 27 has a selection signal S6 synchronized with the selection signal S4.
Is input from the synchronization signal generation circuit 29, the video distribution signal S51 written from the corresponding video memory 23 to 26 is output.
Through S54 are sequentially read by thinning-out scanning in synchronization with the selection signal S6, and a digital video memory output signal S7 is output. D / A connected to video memory reading circuit 27
The conversion circuit 28 is connected to the synchronization signal generation circuit 29, and outputs a digital video memory output signal S7 output from the video memory reading circuit 27, and a selection signal S8 synchronized with the selection signal S6 output from the synchronization signal generation circuit 29. Is input, the digital video memory output signal S7 is converted into an analog signal in synchronization with the selection signal S8 and output as an analog video memory output signal S9.

【0013】このような画面再生分割装置20のD/A
変換回路28の出力側には1対の伝送線50が接続さ
れ、伝送線50を介してモニタテレビ30が接続され
る。モニタテレビ30は伝送線50から伝送されるアナ
ログ映像メモリ出力信号S9が出画され、各監視カメラ
11〜14で撮像された映像がモニタテレビ30におい
て画面を4分割された映像として再現される。
The D / A of the screen reproduction / segmentation device 20 as described above
A pair of transmission lines 50 are connected to the output side of the conversion circuit 28, and the monitor television 30 is connected via the transmission lines 50. The monitor television 30 receives the analog video memory output signal S9 transmitted from the transmission line 50, and the video captured by each of the monitoring cameras 11 to 14 is reproduced on the monitor television 30 as a video obtained by dividing the screen into four.

【0014】このような監視カメラ装置において、画面
再生分割装置20の同期信号発生回路29から出力され
る同期信号S1を時分割して分割同期信号S11〜S14と
して、各監視カメラ11〜14に割当て、それぞれの監
視カメラ11〜14に分配して供給する。各監視カメラ
11〜14から、それぞれ供給された分割同期信号S11
〜S14に従って1フィールド毎に映像信号S21〜S24が
出力され、この1フィールド毎の映像信号S21〜S24を
多重して合成することにより、1対の伝送線で全部の監
視カメラ11〜14からの映像が伝送される。更に、伝
送された映像を画面再生分割装置20において、映像信
号分配回路22で分割同期信号S11〜S14に同期した分
割選択信号S41〜S44により、各監視カメラ11〜14
から出力される1フィールド毎の映像をそれぞれ映像メ
モリ23〜26に書込み、映像メモリ読込回路27によ
り書込まれた映像信号を同期信号S1に同期した選択信
号S6によって間引き走査し、各監視カメラ11〜14
からの1フィールド毎の映像を読込んだデジタル映像メ
モリ出力信号S7として出力される。デジタル映像メモ
リ出力信号S7はアナログ変換されて、伝送線50を介
して、モニタテレビ30に出力され、モニタテレビ30
の画面を4分割し、各監視カメラ11〜14において撮
像された映像を一括して出画する。
In such a surveillance camera device, the synchronization signal S1 output from the synchronization signal generation circuit 29 of the screen reproduction / division device 20 is time-divided and assigned to each of the monitoring cameras 11 to 14 as divided synchronization signals S11 to S14. Are distributed to the respective monitoring cameras 11 to 14 and supplied. The divided synchronization signal S11 supplied from each of the monitoring cameras 11 to 14, respectively.
The video signals S21 to S24 are output for each field in accordance with steps S14 to S14, and the video signals S21 to S24 for each field are multiplexed and synthesized. Video is transmitted. Further, in the screen reproduction / division device 20, the transmitted video is divided by the video signal distribution circuit 22 into division selection signals S41 to S44 synchronized with the division synchronization signals S11 to S14, so that the surveillance cameras 11 to 14 are transmitted.
The video signals written by the video memory are written into the video memories 23 to 26, and the video signals written by the video memory reading circuit 27 are decimated and scanned by the selection signal S6 synchronized with the synchronization signal S1. ~ 14
Is output as a digital video memory output signal S7 in which the video for each field from the data is read. The digital video memory output signal S7 is converted into an analog signal and output to the monitor television 30 via the transmission line 50.
Is divided into four, and the images captured by the respective monitoring cameras 11 to 14 are collectively output.

【0015】上記実施例では監視カメラを4台設けたも
のを示したが、本発明はこれに限定されず複数台設けた
ものに適用できる。また、各監視カメラへの同期信号の
分配比率を特に設けないものであるが、均等に配分する
ものに限定するものではなく、予め分配比率を設定し、
重点的に監視したい監視カメラへの配分を多くしてモニ
タテレビに出画することもできる。
In the above embodiment, the case where four surveillance cameras are provided has been described. However, the present invention is not limited to this and can be applied to a case where a plurality of surveillance cameras are provided. In addition, although the distribution ratio of the synchronization signal to each monitoring camera is not particularly provided, the distribution ratio is not limited to the distribution evenly, and the distribution ratio is set in advance,
It is also possible to increase the distribution to the surveillance cameras that you want to monitor in a focused manner and display the images on a monitor television.

【0016】[0016]

【発明の効果】上記の説明からも明らかなように、本発
明の監視カメラ装置によれば、同期信号を各監視カメラ
に時分割して分配して割当て、各監視カメラからの映像
信号を時分割多重して合成することにより、1対の伝送
線で全部の監視カメラからの映像を伝送でき、更に、伝
送された映像を同期信号に同期して時分割し、各監視カ
メラの映像に分割して映像メモリに書込み、書込まれた
映像信号を分配された同期信号に応じて間引き走査して
読出すことにより、各監視カメラからの映像を一括して
モニタテレビに出画することができるので、設置工事の
簡略化を図ることができる。
As is clear from the above description, according to the surveillance camera device of the present invention, the synchronization signal is time-divided and distributed and assigned to each surveillance camera, and the video signal from each surveillance camera is time-divided. By dividing and multiplexing and synthesizing, video from all surveillance cameras can be transmitted over a pair of transmission lines. Further, the transmitted video is time-divided in synchronization with a synchronization signal and divided into video of each surveillance camera. Then, the video signals from the respective monitoring cameras can be displayed on the monitor television at a time by thinning out and scanning the written video signals in accordance with the distributed synchronization signal and reading out the written video signals. Therefore, the installation work can be simplified.

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

【図1】本発明の一実施例を示すブロック図。FIG. 1 is a block diagram showing one embodiment of the present invention.

【図2】図1に示す実施例の動作を示す説明図。FIG. 2 is an explanatory diagram showing the operation of the embodiment shown in FIG.

【図3】図1に示す実施例の動作を示す説明図。FIG. 3 is an explanatory diagram showing the operation of the embodiment shown in FIG. 1;

【図4】図1に示す実施例の動作を示す説明図。FIG. 4 is an explanatory diagram showing the operation of the embodiment shown in FIG. 1;

【図5】従来例を示すブロック図。FIG. 5 is a block diagram showing a conventional example.

【符号の説明】[Explanation of symbols]

10‥‥‥カメラ映像合成装置 11〜14‥‥‥監視カメラ 15‥‥‥映像信号合成回路 16‥‥‥同期信号分配回路 20‥‥‥画面再生分割装置 21‥‥‥A/D変換回路 22‥‥‥映像信号分配回路 23〜26‥‥‥映像メモリ 27‥‥‥映像メモリ読込回路 28‥‥‥D/A変換回路 29‥‥‥同期信号発生回路 30‥‥‥モニタ装置 40‥‥‥1対の伝送線 Reference Signs List 10 camera video synthesizing device 11 to 14 surveillance camera 15 video signal synthesizing circuit 16 synchronizing signal distribution circuit 20 screen reproduction division device 21 A / D conversion circuit 22 {Video signal distribution circuit 23-26} Video memory 27 {Video memory read circuit 28} D / A conversion circuit 29} Synchronous signal generation circuit 30 {Monitor device 40} A pair of transmission lines

【手続補正書】[Procedure amendment]

【提出日】平成9年10月24日[Submission date] October 24, 1997

【手続補正1】[Procedure amendment 1]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】0002[Correction target item name] 0002

【補正方法】変更[Correction method] Change

【補正内容】[Correction contents]

【0002】[0002]

【従来技術】従来から、異なる場所に設置された複数の
監視カメラからの映像を1箇所に設けられたモニタテレ
ビでモニタ可能な監視カメラ装置が知られている。この
種の監視カメラ装置としては、図5に示すように、複数
の監視カメラ、例えば4台の監視カメラ11〜14と、
各監視カメラ11〜14から出力される映像を分割処理
する分割表示装置60と、分割表示装置60からの出力
を出画する1台のモニタテレビ30とを設けたものがあ
った。
2. Description of the Related Art Conventionally, there has been known a surveillance camera device capable of monitoring images from a plurality of surveillance cameras installed at different locations on a monitor television provided at one location. As shown in FIG. 5, this type of surveillance camera device includes a plurality of surveillance cameras, for example, four surveillance cameras 11 to 14,
Video processing output from each monitoring camera 11-14 is divided
Some display devices have a divided display device 60 and one monitor television 30 that outputs an output from the divided display device 60.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】複数の監視カメラ(11〜14)からの映
像をカメラ映像合成装置(10)で映像合成して1対の
伝送線(40)で伝送し画面再生分割装置(20)で画
面再生分割し、画面再生分割された映像信号を画面分割
してモニタ装置(30)で出画する監視カメラ装置であ
って、 前記カメラ映像合成装置は、前記画面再生分割装置の同
期信号発生回路(29)から伝送されてきた各監視カメ
ラに割当てられた同期信号を分配して各監視カメラにそ
れぞれ供給する同期信号分配回路(16)と、前記複数
の監視カメラから送出されてきた1フィールド分の映像
信号を多重して1つの映像信号として合成する映像信号
合成回路(15)とを備え、 前記画面再生分割装置は、前記映像信号合成回路から前
記伝送線を介して伝送されてきた映像信号をA/D変換
するA/D変換器(21)と、A/D変換された映像信
号を前記各監視カメラに割当てられた同期信号とそれぞ
れ同期された選択信号と論理積が取られフィールド毎に
分割して映像信号を分配する映像信号分配回路(22)
と、前記映像信号分配回路から出力された映像信号をそ
れぞれ書込む映像メモリ(23〜26)と、前記映像メ
モリに書込まれた映像信号を前記同期信号と同期した間
引き走査により順次読込む映像メモリ読込回路(27)
と、前記映像メモリ読込回路で読込まれた映像信号を前
記同期信号と同期してD/A変換し前記モニタ装置で画
面分割して出画するD/A変換回路(28)とを備えた
ことを特徴とする監視カメラ装置。
An image from a plurality of surveillance cameras (11 to 14) is synthesized by a camera image synthesizing device (10), transmitted over a pair of transmission lines (40), and displayed by a screen reproduction splitting device (20). A surveillance camera device that divides a video signal subjected to reproduction division and screen reproduction division into screens and outputs the divided image on a monitor device (30), wherein the camera video synthesis device includes a synchronization signal generation circuit ( 29) a synchronizing signal distribution circuit (16) for distributing the synchronizing signal assigned to each surveillance camera transmitted from the surveillance cameras and supplying the synchronizing signal to each surveillance camera, and one field of one field transmitted from the plurality of surveillance cameras. A video signal synthesizing circuit (15) for multiplexing the video signals and synthesizing them as one video signal, wherein the screen reproduction / splitting device transmits the video signal transmitted from the video signal synthesizing circuit via the transmission line. An A / D converter (21) for A / D-converting the signal, and a logical product of the A / D-converted video signal and a synchronizing signal assigned to each of the surveillance cameras and a selection signal synchronized with each other, and A video signal distribution circuit (22) that distributes a video signal by dividing each video signal
A video memory (23 to 26) for writing the video signal output from the video signal distribution circuit, and a video for sequentially reading the video signal written in the video memory by thinning-out scanning synchronized with the synchronization signal Memory reading circuit (27)
And a D / A conversion circuit (28) that D / A converts the video signal read by the video memory reading circuit in synchronization with the synchronization signal and divides the screen by the monitor device and outputs the screen. A surveillance camera device characterized by the above-mentioned.
JP9019366A 1997-01-31 1997-01-31 Supervisory camera equipment Pending JPH10224774A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9019366A JPH10224774A (en) 1997-01-31 1997-01-31 Supervisory camera equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9019366A JPH10224774A (en) 1997-01-31 1997-01-31 Supervisory camera equipment

Publications (1)

Publication Number Publication Date
JPH10224774A true JPH10224774A (en) 1998-08-21

Family

ID=11997363

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9019366A Pending JPH10224774A (en) 1997-01-31 1997-01-31 Supervisory camera equipment

Country Status (1)

Country Link
JP (1) JPH10224774A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007259133A (en) * 2006-03-23 2007-10-04 Matsushita Electric Works Ltd Video transmission system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007259133A (en) * 2006-03-23 2007-10-04 Matsushita Electric Works Ltd Video transmission system

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