JPS6342589A - Tv camera for outputting digital signal - Google Patents

Tv camera for outputting digital signal

Info

Publication number
JPS6342589A
JPS6342589A JP61187625A JP18762586A JPS6342589A JP S6342589 A JPS6342589 A JP S6342589A JP 61187625 A JP61187625 A JP 61187625A JP 18762586 A JP18762586 A JP 18762586A JP S6342589 A JPS6342589 A JP S6342589A
Authority
JP
Japan
Prior art keywords
signal
control circuit
memory
sensor
camera
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
JP61187625A
Other languages
Japanese (ja)
Inventor
Eiji Karaki
栄二 唐木
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.)
Seiko Epson Corp
Original Assignee
Seiko Epson 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 Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP61187625A priority Critical patent/JPS6342589A/en
Publication of JPS6342589A publication Critical patent/JPS6342589A/en
Pending legal-status Critical Current

Links

Landscapes

  • Transforming Light Signals Into Electric Signals (AREA)
  • Closed-Circuit Television Systems (AREA)

Abstract

PURPOSE:To realize a long distance transmission, and an inexpensive transmission type, and to enable a camera operation to be controlled from an outside, by providing a control circuit, an A/D converter, a memory, and an interface circuit, and outputting a video signal as a digital signal. CONSTITUTION:A synchronizing signal generator 2 generates a synchronizing signal which drives a sensor 1, an amplifier 3, and the A/D converter 4. The video signal converted to an electric signal being outputted from the sensor 1, is amplified at the amplifier 3, and is converted to the digital signal at the A/D converter 4. The memory 5 stores the digital signal outputted by th A/D convert 4, and also, stores the arithmetic result of the control circuit 6. The interface circuit 7 outputs th data of the memory 5, or intermediates between the outside and the control signal of the control circuit 6. The synchronizing signal generator 2 is controlled by the control circuit 6, and by changing the scanning cycle of the sensor 1 corresponding to the intensity of light, the sensitivity of the camera 1 can be adjusted. Also, the control circuit 6 performs an arithmetic processing such as the extraction of a feature, the comparison of an image, the detection of abnormality, and a picture precessing, and stores the data in the memory again.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、監視用T’7カメラ、工業用TVカメラに関
する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a T'7 surveillance camera and an industrial TV camera.

(従来の技術〕 従来の監視用TVカメラ、工業用TVカメラは内部発振
ある穎は、外部信号に基いて同期信号を発生する同期信
号発生器の信号により駆動され、光学eを電気信号に変
換する撮慮管、COD等のセンサーの出力を増幅及び信
号処理して映像信号をアナログ信号のまま出力するもの
であった。
(Prior art) Conventional surveillance TV cameras and industrial TV cameras are driven by internal oscillation signals from a synchronization signal generator that generates synchronization signals based on external signals, converting optical signals into electrical signals. The output of a sensor such as a camera tube or COD was amplified and signal-processed, and a video signal was output as an analog signal.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

しかし、前述の従来技術では、映像信号がアナログであ
るため伝送ケーブルとして同軸ケーブルが必要であった
。同軸ケーブルは1周波数特性の劣下のため伝送距離が
限られ、また、ケーブル設置にもコスト面で問題がある
However, in the prior art described above, since the video signal is analog, a coaxial cable is required as the transmission cable. Coaxial cables have a limited transmission distance due to poor single-frequency characteristics, and there are also problems with cable installation costs.

さらに、カメラの動作を外からコントロールできないと
いり問題がある。
Furthermore, there is a problem in that the operation of the camera cannot be controlled from the outside.

そこで本発明は、このような問題点を解決するもので、
その目的とするところは、伝送距離が良く、また、既設
電話線を使用することができるカメラを提供するところ
にある。また、センサー駆動、信号処理、蓄積率インテ
リジェントなカメラ金提供するところにある。
Therefore, the present invention aims to solve these problems.
The objective is to provide a camera that has a good transmission distance and can use existing telephone lines. In addition, the sensor drive, signal processing, and storage rate are in place to provide intelligent camera gold.

〔問題点を解決するための手段〕[Means for solving problems]

本発明のデジタル信号出力TVカメラは、同期信号発生
器の信号により駆動され、光学gRt−電気信号に変換
するセンサーと、センサーの出力信号を増幅して映像信
号を出力する′rvカメラにおいて、インターフェース
回路を通して外部コントロール信号をうけとフ、前記同
期信号発生器及びメモリーをコントロールすると同時に
演算処E1行り制御回路と、アナログ映像信号をデジタ
ル映像信号に変換するA/D変換器と、デジタル映像信
号を前記制御回路のコントロールによフ、記憶するメモ
リーと、前記メモリーの内容を出力すると同時に、前記
制御回路と外部との信号を仲介するインターフェース回
路を−りの筐体に備え次ことを特徴とする。
The digital signal output TV camera of the present invention has an interface between a sensor that is driven by a signal from a synchronous signal generator and converts it into an optical gRt-electrical signal, and an 'rv camera that amplifies the output signal of the sensor and outputs a video signal. A control circuit that receives an external control signal through a circuit, controls the synchronizing signal generator and memory, and at the same time performs arithmetic processing E1, an A/D converter that converts an analog video signal into a digital video signal, and a digital video signal. A memory for storing information under the control of the control circuit, and an interface circuit for outputting the contents of the memory and at the same time mediating signals between the control circuit and the outside, are provided in one housing. do.

〔実施列〕[Implementation row]

第1図は本発明におけるブロック図であって、1はレン
ズによシ結象した光学@をその光の強さく従って電気信
号にに換する撮慮管あるいは、半導体操@素子等のセン
サーである。2は、センサーlを駆動する同期信号、増
幅器3、A/I)変換器4を駆動する同期信号を発生す
る同期信号発生器である。3は、センサーlから出力さ
れる電気信号に変換され九信号(以下、映像信号)を増
幅する増幅器、4は、映像信号を、アナログ信号からデ
ジタル信号に変換するへρ変換器である。5はA/D変
換器4によフ出力されるデジタル信号を記憶し、また、
制御回路6の演算結果を記憶するメモリーである。6は
、同期信号発生器2の駆動時間インターバル等の指令を
与えるとともに、メモリー5のデータ演算処理を行な5
制御回路である。
Fig. 1 is a block diagram of the present invention, and 1 is a sensor such as a photo-taking tube or a semiconductor device that converts the optical image formed by the lens into an electrical signal according to the intensity of the light. be. Reference numeral 2 denotes a synchronous signal generator that generates a synchronous signal that drives the sensor 1, an amplifier 3, and an A/I converter 4. Reference numeral 3 denotes an amplifier that amplifies the nine signals (hereinafter referred to as video signals) outputted from the sensor 1, which are converted into electrical signals, and 4 is a ρ converter that converts the video signals from analog signals to digital signals. 5 stores the digital signal outputted by the A/D converter 4, and
This is a memory that stores the calculation results of the control circuit 6. 6 gives commands such as driving time intervals to the synchronizing signal generator 2, and also performs data arithmetic processing in the memory 5.
It is a control circuit.

7は、メモリー5のデータを外部出力したり、外部と制
御回路6のコントロール信号を仲介するインターフェー
ス回路である。
Reference numeral 7 denotes an interface circuit that outputs data from the memory 5 to the outside and mediates control signals between the outside and the control circuit 6.

さらに詳しい動作説明を行う1通常TVカメラはセンサ
ーlの撮濠面を走査する方式によフ、1秒VC30枚O
映it−取フ出している。これは動画を撮慮するために
必要な巖底の枚数である。しかし監視用カメラ、工業用
カメラの場合、必ずしも動画が必要なわけではない、ま
た、画家処理、面識認識等の技術を用いて、異常検知、
あるいは、製品の不良判定等を行う場合、その演算速度
から言っても1秒に加枚もの画像データは処理しきれな
い。
More detailed explanation of operation 1. Normal TV cameras use a method of scanning the moat surface of the sensor 1, which takes 30 VC images per second.
The movie is out. This is the number of frames required to record a video. However, in the case of surveillance cameras and industrial cameras, videos are not necessarily required, and technologies such as painter processing and face recognition are used to detect abnormalities and
Alternatively, when determining whether a product is defective or the like, it is impossible to process more than one page of image data per second in terms of calculation speed.

また、センサー1は、光の量を電荷に変換するものであ
シ、走査の周期が長ければ長いほど、信号電荷の蓄積が
多くできるので、大きな電気信号1■出せるわけである
。つまり、センサー1の走査周期を変えれば、カメラの
感度を変わられるわけである。
Furthermore, the sensor 1 converts the amount of light into electric charges, and the longer the scanning period, the more signal charges can be accumulated, and therefore the larger the electric signal 1 can be output. In other words, by changing the scanning period of sensor 1, the sensitivity of the camera can be changed.

そこで第1図では制御回路6によシ、同期信号発生器2
t−コントロールし、光の強さに応じて、センサー1の
走査周期を変化させて、カメラの感度全調整する。この
時制御回路6は、メモリー6のデータにより、光の強さ
を検出して自動的に、同期信号発生器6をコントロール
でき、また、外部からの信号によりてもコントロールで
きる。同期信号発生器6のコントロールは、通常1/3
0秒に1回出しているスタートパルスの周期を変化させ
ることで行う。
Therefore, in FIG. 1, the control circuit 6 and the synchronization signal generator 2
t-control, the scanning period of sensor 1 is changed according to the intensity of light, and the sensitivity of the camera is fully adjusted. At this time, the control circuit 6 can detect the intensity of light based on the data in the memory 6 and automatically control the synchronizing signal generator 6, or can also control it using an external signal. The control of the synchronization signal generator 6 is usually 1/3
This is done by changing the cycle of the start pulse, which is issued once every 0 seconds.

ま九、制御回路6は、メモリー5のデータを用いて、特
徴抽出、画像比較、異常検出、画微処理等、演算処°瑠
を行い、再びメモリーにデータ記憶する。
Finally, the control circuit 6 uses the data in the memory 5 to perform arithmetic operations such as feature extraction, image comparison, abnormality detection, image microprocessing, etc., and stores the data in the memory again.

さらにインターフェース回路7からは、メモリー5の内
容の一部ちるいは全部あるいは、前データと異なった部
分のみをデジタル信号として出力する。これらの動作は
、外部からインターフェース回路7よシ!Ij御回路6
にコントロール信号を送シ、それに基いて制御回路6が
自動的に行なうものである。
Furthermore, the interface circuit 7 outputs part or all of the contents of the memory 5, or only the portion that is different from the previous data, as a digital signal. These operations are controlled by the interface circuit 7 from the outside! Ij control circuit 6
A control signal is sent to the controller, and the control circuit 6 automatically performs the operation based on the control signal.

これらの演算、制御は、工C化さh九マイクロコンピュ
ータによる制御回路6を構成でき、そのプログラムによ
V様々な処理が行えることは周知である。
It is well known that these calculations and controls can be performed by a control circuit 6 using a computerized microcomputer, and that various processes can be performed by the program.

〔発明の効果〕〔Effect of the invention〕

以と述べたように発明によれば、制御回路、A/D変換
器、メモリー、インターフェース回路を備えていること
により、デジタル信号として映像信号を出力するので、
電話線等の既設信号線を用いることができ、長距離伝送
、安価な伝送形標がとれるという効果を有する。
As described above, according to the invention, since the video signal is output as a digital signal by being equipped with a control circuit, an A/D converter, a memory, and an interface circuit,
Existing signal lines such as telephone lines can be used, which has the advantage of long-distance transmission and inexpensive transmission formats.

また、デジタル信号処理が行えるので、センサー感度の
コントロール、両縁処理、異常検知等の動作を行うこと
ができ、いままでの監視用TVカメラ、工業用TV右カ
メラない、高機能なT’7カメラを提供できる。
In addition, since it can perform digital signal processing, it can perform operations such as sensor sensitivity control, double edge processing, and abnormality detection, making it a highly functional T'7 that does not have conventional surveillance TV cameras or industrial TV right cameras. We can provide cameras.

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

第1図は本発明のデジタル信号出力TVカメラの一実施
列を示すブロック図。 1・・・センサー 2・−同期信号発生器3・・・増幅
器 4・・・A/D変換器5・・・メそリ−6・Φ・制
御回路 7・・・インターフェース回路 以   上
FIG. 1 is a block diagram showing one embodiment of a digital signal output TV camera according to the present invention. 1...Sensor 2-Synchronization signal generator 3...Amplifier 4...A/D converter 5...Method 6/Φ/Control circuit 7...Interface circuit

Claims (1)

【特許請求の範囲】[Claims] (1)a)同期信号発生器の信号により駆動され、光学
像を電気信号に変換するセンサーと、センサーの出力信
号を増幅して映像信号を出力するTVカメラにおいて、 b)インターフェース回路を通して外部コントロール信
号をうけとり、前記同期信号発生器及びメモリーをコン
トロールすると同時に演算処理を行う制御回路と c)アナログ映像信号をデジタル映像信号に変換するA
/D変換器と、 d)デジタル映像信号を前記制御回路のコントロールに
より、記憶するメモリーと、 e)前記メモリーの内容を出力すると同時に前記制御回
路と外部との信号を仲介するインターフェース回路を一
つの筐体に備えたことを特徴とするデジタル信号出力T
Vカメラ。
(1) a) A sensor that is driven by a signal from a synchronization signal generator and converts an optical image into an electrical signal, and a TV camera that amplifies the output signal of the sensor and outputs a video signal, and b) External control through an interface circuit. c) A control circuit that receives the signal, controls the synchronization signal generator and memory, and simultaneously performs arithmetic processing; and c) A that converts the analog video signal into a digital video signal.
/D converter; d) a memory that stores digital video signals under the control of the control circuit; and e) an interface circuit that outputs the contents of the memory and at the same time mediates signals between the control circuit and the outside. Digital signal output T featured in the housing
V camera.
JP61187625A 1986-08-08 1986-08-08 Tv camera for outputting digital signal Pending JPS6342589A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61187625A JPS6342589A (en) 1986-08-08 1986-08-08 Tv camera for outputting digital signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61187625A JPS6342589A (en) 1986-08-08 1986-08-08 Tv camera for outputting digital signal

Publications (1)

Publication Number Publication Date
JPS6342589A true JPS6342589A (en) 1988-02-23

Family

ID=16209380

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61187625A Pending JPS6342589A (en) 1986-08-08 1986-08-08 Tv camera for outputting digital signal

Country Status (1)

Country Link
JP (1) JPS6342589A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0258960U (en) * 1988-10-18 1990-04-27

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0258960U (en) * 1988-10-18 1990-04-27
JPH0521421Y2 (en) * 1988-10-18 1993-06-01

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