JPS58171176A - Camera switching device of transmitting device of still picture - Google Patents

Camera switching device of transmitting device of still picture

Info

Publication number
JPS58171176A
JPS58171176A JP5227782A JP5227782A JPS58171176A JP S58171176 A JPS58171176 A JP S58171176A JP 5227782 A JP5227782 A JP 5227782A JP 5227782 A JP5227782 A JP 5227782A JP S58171176 A JPS58171176 A JP S58171176A
Authority
JP
Japan
Prior art keywords
signal
camera
alarm
output
circuit
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
JP5227782A
Other languages
Japanese (ja)
Inventor
Kenji Morita
森田 健次
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.)
Hitachi Denshi KK
Original Assignee
Hitachi Denshi KK
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 Hitachi Denshi KK filed Critical Hitachi Denshi KK
Priority to JP5227782A priority Critical patent/JPS58171176A/en
Publication of JPS58171176A publication Critical patent/JPS58171176A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00Burglar, theft or intruder alarms
    • G08B13/18Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/189Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/194Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
    • G08B13/196Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
    • G08B13/19634Electrical details of the system, e.g. component blocks for carrying out specific functions
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00Burglar, theft or intruder alarms
    • G08B13/18Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/189Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/194Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
    • G08B13/196Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Studio Circuits (AREA)
  • Emergency Alarm Devices (AREA)

Abstract

PURPOSE:To monitor a picture from a camera completely, by switching the camera only by an alarm signal initially generated after the timing of the generation of a picture transmission completing signal. CONSTITUTION:If any one of alarm devices is actuated and an alarm signal al-1 e.g. is generated, a pulse signal alp-1 is generated from a pulse generating 2-1 and a flip-flop 4 is set up. A latch circuit 6 latches the pulse signal alp-1 and supplies a camera switching signal CS-1 to an output terminal 7-1. The latch circuit 6 is enabled to execute the succeeding latch operation after the timing of the generation of the succeeding transmission end signal TREND to be outputted by writing the whole picture signals of one frame through the camera selected and switched by the alarm signal al-1.

Description

【発明の詳細な説明】 本発明は、監視システム々ど複数のカメラを備え、警報
装置により自動的にカメラを切換えて必要な画像の伝送
が行なえるようにした静止画伝送装置におけるカメラ切
換器に関すゐ◇ 静止画伝送装置は各種の監視システム力どに広く用いら
れているが、このようなシステムにおいては、監視すべ
き場所が1個所に限られる場合を除き、多数のカメラが
設置され、それらによる画像を必要に応じて順次、或い
は任意に切換えて伝送し、モニタするようにかってい石
。しかして、このとき、たまたまモニタしていないカメ
ラが設置されている場所で異常事態が発生したような場
合には、その発見が遅れたり、見逃がされたりする虞れ
があゐため、カメラが設置されている場所に異常事態を
検量してアラーム信号を発生する警報装置を設け、アラ
ーム信号によって自動的にカメラの切換えを行ない、異
常事態が発生し穴場所に設置されているカメラからの画
像のモニタに自動的に切換えられるようにしたシステム
が広く用いられるようになってきた。
DETAILED DESCRIPTION OF THE INVENTION The present invention provides a camera switching device for a still image transmission device, which is equipped with a plurality of cameras in each monitoring system, and is configured to automatically switch cameras using an alarm device to transmit necessary images. ◇Still image transmission devices are widely used in various surveillance systems, but in such systems, unless the location to be monitored is limited to one location, many cameras are installed. These images can then be transmitted and monitored sequentially or arbitrarily as needed. However, if an abnormal situation happens to occur in a place where a camera that is not being monitored is installed, there is a risk that the detection will be delayed or overlooked. An alarm device is installed at the location where the hole is installed to detect an abnormal situation and generate an alarm signal, and the camera is automatically switched depending on the alarm signal. Systems that automatically switch to image monitors have become widely used.

なお、このような場合、警報装置から発生されるアラー
ム信号は異常な状態が接続されている間は継続している
。従って、複数の警報装置全取扱うシステムで先発のア
ラーム信号が継続しているときに後発のアラーム信号が
発生し几場合には複数のアラーム信号が同時に存在して
しまい、後発のアラーム信号によるカメラ切換えが行彦
えなくアラーム信号の前縁からパルスを得、これにより
カメラの切換えを行なう方式が一般に採用されている。
In addition, in such a case, the alarm signal generated from the alarm device continues while the abnormal condition is connected. Therefore, in a system that handles multiple alarm devices, if a later alarm signal occurs while the earlier alarm signal continues, multiple alarm signals will exist simultaneously, and the camera will be switched due to the later alarm signal. Generally, a method is adopted in which a pulse is obtained from the leading edge of the alarm signal without interruption, and the camera is switched using this pulse.

トコろで、静止画伝送システムにおいては、一般に電話
回線などの狭帯域電送路による画像伝送であるため、画
像1フレ一ム分の信号伝送に数十秒もの時間を必要とす
る0 そのため、上記のようなアラーム信号によりカメラの切
換えを行なうようにしたシステムにおいて、先発のアラ
ーム信号によりカメラが切換えられ、それによる1フレ
一ム分の信号の伝送が完了しないうちに後発のアラーム
信号が現われると、この時点でカメラが切換えられてし
まうため、先発のアラーム信号によって切換えられてい
たカメラからの画像が乱れ、モニタが困難になった夛不
能になったりしてしまうO 一般に、複数のカメラと警報装置を備えたシステムにお
いては、何らかの異常事態を生じたときに最初にアラー
ム信号を発した場所のモニタdi%に重要になゐことが
多いoしかるに、上記したシステムでは、ひき続いて複
数の警報装置d!作動したときには、順次に次々とカメ
ラが切換えられてし壕い、その間、次々と不完全な画像
しか得られなくなってしまうことになり、必要なモニタ
を行かうことができない。
Generally speaking, in still image transmission systems, images are transmitted through narrowband transmission lines such as telephone lines, so it takes several tens of seconds to transmit the signal for one image frame. In a system in which cameras are switched in response to an alarm signal such as this, if the camera is switched in response to an earlier alarm signal, and a later alarm signal appears before the signal transmission for one frame has been completed. , since the camera is switched at this point, the image from the camera that was switched by the earlier alarm signal is distorted, making it difficult to monitor or even impossible to recover.In general, multiple cameras and alarms In systems equipped with equipment, it is often important to monitor di% of the location where an alarm signal is first issued when some abnormal situation occurs.However, in the above system, multiple alarms are Device d! When activated, the cameras are switched one after another, and during this time only incomplete images are obtained one after another, making it impossible to perform the necessary monitoring.

従って、上記した従来のカメラ切換システムにおいては
、複数のアラーム信号がひき続いて発生したときのモニ
タを充分に行なうこと75≦できないという欠点があっ
之。
Therefore, the conventional camera switching system described above has the disadvantage that it is not possible to adequately monitor when a plurality of alarm signals occur one after the other.

本発明の目的は、上記した従来技術の欠点を除き、異な
った警報装置から順次アラーム信号が発生したときでも
、最先のアラーム信号により切換えられたカメラからの
画像のモニタが完全に行なえるようにしたカメラ切換器
を提供するにある。
An object of the present invention is to eliminate the drawbacks of the prior art described above, and to enable complete monitoring of images from a camera switched by the earliest alarm signal even when alarm signals are sequentially generated from different alarm devices. It is to provide a camera switcher that can be used in various ways.

この目的を達成す石ため、本発明は、静止画伝送装置に
おいて、1フレ一ム分の画像信号が終了す石ごとに発生
される画像伝送終了信号の発生タイミング後に最初に発
生したアラーム信号によってだけカメラの切換えが行な
われ、それ以後、次の画像伝送終了信号が発生するまで
の期間内に発生したアラーム信号は無視されてしまうよ
うにした点を特徴とする。
In order to achieve this object, the present invention provides a still image transmission device that uses an alarm signal that is first generated after the generation timing of an image transmission end signal that is generated every time an image signal for one frame ends. The present invention is characterized in that the camera is switched only once, and then any alarm signal generated within a period until the next image transmission end signal is generated is ignored.

以下、本発明による静止画伝送装置用カメラ切換器の実
施例を図面について説明する。
Embodiments of a camera switch for a still image transmission device according to the present invention will be described below with reference to the drawings.

図は本発明の一実施例で、この図において、1−0〜1
−nitn台の警報装置からのアラーム信号入力1子、
2−□〜2−nはパルス発生回路、3はn入力のオアゲ
ート(論理和回路〕、4はR−Sフリップフロップ(以
下、FFと略記する)、5は画像伝送終了信号(TRE
ND)の入力端子、6はnビットのラッチ回路、7−□
〜7..−nはカメラ切換信号の出力端子、8は遅延パ
ルス発生回路、9は画像書換信号の出力端子である。な
お、&l−1〜&L、はアラーム信号、alp−1〜a
ip−,はアラームパルス信号、CS、〜C81はカメ
ラ切換信号、WRは画像書換信号である。
The figure shows one embodiment of the present invention, and in this figure, 1-0 to 1
-1 alarm signal input from nitn alarm device,
2-□ to 2-n are pulse generation circuits, 3 is an n-input OR gate (OR circuit), 4 is an R-S flip-flop (hereinafter abbreviated as FF), and 5 is an image transmission end signal (TRE
ND) input terminal, 6 is an n-bit latch circuit, 7-□
~7. .. -n is an output terminal for a camera switching signal, 8 is a delay pulse generation circuit, and 9 is an output terminal for an image rewriting signal. In addition, &l-1~&L are alarm signals, alp-1~a
ip-, is an alarm pulse signal, CS, to C81 are camera switching signals, and WR is an image rewriting signal.

入力端子1−8〜1−nにはn台の警報装置からのそれ
ぞれのアラーム信号aA 1〜&4−4が供給される。
Input terminals 1-8 to 1-n are supplied with respective alarm signals aA1 to &4-4 from n alarm devices.

n個のパルス発生回路2−□〜2−nはそれぞれアラー
ム信号al−1〜al−1を入力とし、その前縁立ち上
9部分でパルス信号alp−1〜aA’p4を発生する
働きをする。
The n pulse generating circuits 2-□ to 2-n each receive alarm signals al-1 to al-1 as inputs, and function to generate pulse signals alp-1 to aA'p4 at the rising edge of the leading edge. do.

オアゲート3はパルス信号alp−1〜a/p−Bのい
ずれか一つでも発生したときにはFF40セット人力S
にパルスを供給する働きをする。
OR gate 3 sets FF40 manually when any one of pulse signals alp-1 to a/p-B occurs.
It functions to supply pulses to the

FF4は入力端子5から供給される信号TRENDによ
ってリセットされ、オアゲート3の出力パルスによシセ
ットされてQ出力にクロックclを発生する働きをする
The FF4 is reset by the signal TREND supplied from the input terminal 5, and is reset by the output pulse of the OR gate 3, and functions to generate a clock cl at the Q output.

ラッチ回路6はクロックclO前縁立ち上り部分のタイ
ミングでパルス信号a l P−t 〜alp−0のい
ずれか一つをラッチし、次にクロックC/の前縁立ち上
9部分が供給されるまで保持する働きをする。そして、
このラッチ回路6で保持された信号をカメラ切換信号C
S−1〜CS−、として出力端子7.〜7−nから出力
する。
The latch circuit 6 latches any one of the pulse signals a l P-t to alp-0 at the timing of the rising edge of the leading edge of the clock CLO, and then latches the pulse signal a l P-t to alp-0 until the rising edge of the leading edge of the clock C/ is supplied. It functions to hold. and,
The signal held in this latch circuit 6 is used as the camera switching signal C.
S-1 to CS-, output terminals 7. Output from ~7-n.

遅延パルス発生回路8はクロックclO前縁立ち上り部
でトリガされ、所定の時間だけ遅れて所宥のパルス幅を
有す為パルス信号を発生し、出方端子9に画像書換信号
WRを供給する働きをすゐ。
The delayed pulse generation circuit 8 is triggered by the rising edge of the leading edge of the clock CLO, generates a pulse signal having a desired pulse width after a predetermined delay, and supplies the image rewriting signal WR to the output terminal 9. Sui.

なお、図示してないが、出力端子7−1〜7−nのカメ
ラ切換信号C8−□〜CS−,は、n台のカメラのそれ
ぞれ対応するカメラからの画像信号の伝送切換に利用さ
れ、出力端子9からの画像書換信号WRFi受信側での
画像メモリの書換え開始に用いられ石。
Although not shown, the camera switching signals C8-□ to CS- of the output terminals 7-1 to 7-n are used to switch the transmission of image signals from the respective cameras of the n cameras. This stone is used to start rewriting the image memory on the receiving side of the image rewriting signal WRFi from the output terminal 9.

次に、この実施例の動作について説明する。Next, the operation of this embodiment will be explained.

いま、信号TRENDが発生し、その後、アラーム信号
1−1〜1−nのいずれもが発生してぃなかったとし、
これKよりFF4はリセットされ次ままとなっていたと
する。
Now, suppose that the signal TREND is generated, and then none of the alarm signals 1-1 to 1-n are generated.
Assume that FF4 is reset from this K and remains as it was.

そこで、この状態でn台の警報装置のうちのいずれか窄
動作し、例えばアラーム信号a/−1が発生したとする
Therefore, suppose that one of the n alarm devices is activated in this state and, for example, an alarm signal a/-1 is generated.

そうすると、パルス発生回路2−1からはアラーム信号
a1.1の前縁立ち上多部分のタイミングでパルス信号
aA!p−1が発生するので、これによυオア回路3が
出力を発生し、FF4t−セットする。
Then, the pulse generating circuit 2-1 outputs the pulse signal aA! at the timing of the rising edge of the leading edge of the alarm signal a1.1. Since p-1 is generated, the υOR circuit 3 generates an output and sets FF4t-.

そこで、FF4のQ出力にはクロックclが発生し、そ
の前縁立ち上9部分でラッチ回路6はパルス信号aIp
−t  をランチして出力端子7−□にカメラ切換信号
C8−□を供給する。
Therefore, the clock cl is generated at the Q output of the FF4, and at the 9 rising edge of the leading edge, the latch circuit 6 outputs the pulse signal aIp.
-t and supplies the camera switching signal C8-□ to the output terminal 7-□.

この結果、アラーム信号al−1を発生した警報装置に
対応したカメラが選択され、その画像信号の伝送に切換
えられる。
As a result, the camera corresponding to the alarm device that generated the alarm signal al-1 is selected, and the transmission of the image signal is switched to that camera.

一方、出力端子9は、このカメラに対する切換えタイミ
ングから所定の遅れをもって両便書換信号WRが供給さ
れるから、この信号WRが供給されたタイミングで受信
側の画像メモリにはアラーム信号hl−1によって選択
切換えられ逢カメラがらの画像信号の書込みが開始し、
このカメラにょる画像のモニタを行なうことができる。
On the other hand, since the output terminal 9 is supplied with the dual flight rewriting signal WR with a predetermined delay from the switching timing for this camera, the image memory on the receiving side is sent by the alarm signal hl-1 at the timing when this signal WR is supplied. The selection is changed and writing of the image signal from the camera starts.
Images captured by this camera can be monitored.

しかして、このとき、選択切換えられたカメラからの画
像信号が受信側の画像メモリに全部、っまり1フレ一ム
分書込まれない間は伝送終了信号TRENDは発生しな
いから、FF4はセットされたまま保持されている。
At this time, FF4 is not set because the transmission end signal TREND is not generated until the entire image signal from the selected camera is written into the image memory on the receiving side for exactly one frame. It is kept as it is.

そこで、このとき、上記の警報装置とは異なり九警報装
置が動作し、これにょシ例えばアラーム信号al−Hが
発生し、パルス信号aA’p−nがオアゲート3からF
F4のセット入カSK供給されたとしても、FF4の状
態は変化しないから、このときのパルス信号alp−n
Jiラッチ回路6にはう□ッチされずに無視されてしま
う。そして、これは他(7)7ラ一ム信号a l−2〜
a l−(n−1)についても全く同じであシいずれも
無視されてしまう。
Therefore, at this time, unlike the above-mentioned alarm devices, a nine alarm device is activated, for example, an alarm signal al-H is generated, and a pulse signal aA'p-n is transmitted from the OR gate 3 to the F
Even if the set input SK of F4 is supplied, the state of FF4 does not change, so the pulse signal alp-n at this time
It is ignored without being latched by the Ji latch circuit 6. And this is the other (7) 7 ram signal a l-2~
The same is true for a l-(n-1), and both are ignored.

こうして、次にラッチ回路6によるラッチ動作が可能に
なるのは、アラーム信号hl−1によって選択切換えら
れ次カメラによる17レ一ム分の画像信号が受信側の画
像メモリに全て書込まれ、次の伝送終了信号TREND
が発生したタイミング以降となり、従って、この実施例
によれば、成る警報装置が動作してそれに対応したカメ
ラに切換えられたとき、そのカメラによる1フレ一ム分
の画像信号の伝送が完了するまでは、念とえ他の警報装
置が作動してもカメラが切換えられることはなく、最初
に切換えられたカメラにょゐ画像の七二夕を充分に行な
うことができる。
In this way, the next time the latch operation by the latch circuit 6 becomes possible, the selection is switched by the alarm signal hl-1, and all the image signals for 17 frames from the next camera are written into the image memory on the receiving side, and then the next transmission end signal TREND
Therefore, according to this embodiment, when the alarm device is activated and the camera is switched to the corresponding camera, the transmission of the image signal for one frame by that camera is completed. In this case, even if another alarm device is activated, the camera will not be switched, and the Tanabata festival can be fully captured using the camera that was switched first.

なお、上記実施例で、遅延パルス発生回路8が設けられ
、クロックclO前縁立ち上多部分から所定のタイミン
グだけ遅らせて画像書換信号WRを発生するようにして
いるのは、次の理由による。
The reason why the delay pulse generating circuit 8 is provided in the above embodiment and generates the image rewriting signal WR with a predetermined timing delay from the rising edge of the leading edge of the clock CLO is as follows.

即ち、カメラを切換えた瞬間には、同期状態に入るのに
必要なタイミング遅れなどのために直ちに正しい画像信
号が得られない場合があり、従って、このタイミングを
外して画像メモリの書換えを開始させることによシ乱れ
のない画像のモニタが行なえるようにするためである。
That is, at the moment when the camera is switched, the correct image signal may not be obtained immediately due to the timing delay required to enter the synchronization state, so this timing is removed and rewriting of the image memory is started. In particular, this is to enable undisturbed image monitoring.

以上説明l−たように、本発明によれば、静止画伝送装
置の画像伝送終了信号が発生後、最初に現われたアラー
ム信号に対応して切換えられたカメラからの画像は、そ
の後のアラーム信号の発生とは全く無関係に常に完全な
画像として再生することがで1!石から、従来技術の欠
点を除き、監視システムなどにおいて特に必要とするカ
メラからの画像を正しい状態で充分にモニタすることが
でき、しかも簡単な構成のカメラ切換器をローコストで
提供することができる。
As explained above, according to the present invention, after the image transmission end signal of the still image transmission device is generated, the image from the camera switched in response to the first alarm signal that appears will be transmitted to the next alarm signal. 1! It can always be reproduced as a complete image regardless of its occurrence! By eliminating the shortcomings of the conventional technology, it is possible to provide a camera switching device with a simple configuration at a low cost, which can sufficiently monitor images from cameras in the correct conditions, which are particularly required in surveillance systems, etc. .

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

図は本発明による静止画伝送装置用カメラ切換器の一実
施例を示す回路図である。 2−1〜2−n・・・・・・パルス発生回路、3・・・
・・・オアケート、4・・・・・・R−Sフリップフロ
ップ(FF)、6・・・・・・nビットラッチ回路、8
・・・・・・遅延パルス発生回路。 代理人 弁理士 武 順次部(ほか1名)−48/
The figure is a circuit diagram showing an embodiment of a camera switching device for a still image transmission device according to the present invention. 2-1 to 2-n...Pulse generation circuit, 3...
...ORK, 4...R-S flip-flop (FF), 6...n-bit latch circuit, 8
...Delayed pulse generation circuit. Agent: Patent Attorney Junjibu Takeshi (and 1 other person) -48/

Claims (1)

【特許請求の範囲】[Claims] 複数のカメラと、それらに対応した複数の警報装置と全
備え、警報装置からのアラーム信号にょシ対応した1台
のカメラを選択して画像の切換えを行なう方式の静止画
伝送装置において、上記アラーム信号の前縁で動作する
複数のパルス発生回路と、これら複数のパルス発生回路
の出力パルス倉入力とする論理和回路と、該論理和回路
の出力をセット入力とし静止画伝送装置の画像伝送終了
信号をリセット入力とするフリップフロップと、上記複
数のパルス発生回路の出力パルスをラッチ入力とし上記
フリップフロップのセット出力の前縁をクロックとする
ラッチ回路と、上記フリップフロップのセット出力を入
力とする遅! パルス発生回路とを設け、上記ラッチ回
路の出力により上記複数のカメラの切換えを行なうと共
に上記遅延パルス発生回路の出力により画像の書換えを
行なうように構成したことを特徴とする静止画伝送装置
のカメラ切換器。
In a still image transmission device that is fully equipped with multiple cameras and multiple alarm devices corresponding to them, and switches images by selecting one camera that corresponds to the alarm signal from the alarm device, the above-mentioned alarm A plurality of pulse generation circuits that operate at the leading edge of the signal, an OR circuit that uses the output pulses of the plurality of pulse generation circuits as input, and an output of the OR circuit that uses the output of the OR circuit as a set input to complete the image transmission of the still image transmission device. A flip-flop that uses the signal as a reset input, a latch circuit that uses the output pulses of the plurality of pulse generation circuits as the latch input, and uses the leading edge of the set output of the flip-flop as a clock, and the set output of the flip-flop as the input. Late! A camera of a still image transmission device, characterized in that the camera is provided with a pulse generation circuit, and is configured to switch between the plurality of cameras using the output of the latch circuit, and rewrite an image using the output of the delayed pulse generation circuit. Switcher.
JP5227782A 1982-04-01 1982-04-01 Camera switching device of transmitting device of still picture Pending JPS58171176A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5227782A JPS58171176A (en) 1982-04-01 1982-04-01 Camera switching device of transmitting device of still picture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5227782A JPS58171176A (en) 1982-04-01 1982-04-01 Camera switching device of transmitting device of still picture

Publications (1)

Publication Number Publication Date
JPS58171176A true JPS58171176A (en) 1983-10-07

Family

ID=12910291

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5227782A Pending JPS58171176A (en) 1982-04-01 1982-04-01 Camera switching device of transmitting device of still picture

Country Status (1)

Country Link
JP (1) JPS58171176A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6172397A (en) * 1984-09-17 1986-04-14 三菱電機株式会社 Monitor system
JPS63163681A (en) * 1986-12-26 1988-07-07 Matsushita Electric Ind Co Ltd Automatic supervisory equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6172397A (en) * 1984-09-17 1986-04-14 三菱電機株式会社 Monitor system
JPS63163681A (en) * 1986-12-26 1988-07-07 Matsushita Electric Ind Co Ltd Automatic supervisory equipment

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