JPH0271676A - Television camera - Google Patents
Television cameraInfo
- Publication number
- JPH0271676A JPH0271676A JP63223091A JP22309188A JPH0271676A JP H0271676 A JPH0271676 A JP H0271676A JP 63223091 A JP63223091 A JP 63223091A JP 22309188 A JP22309188 A JP 22309188A JP H0271676 A JPH0271676 A JP H0271676A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- synchronizing signal
- section
- control
- 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
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 3
- 238000003384 imaging method Methods 0.000 claims description 15
- 230000010355 oscillation Effects 0.000 abstract description 10
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000005070 sampling Methods 0.000 description 6
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Transforming Light Signals Into Electric Signals (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明は、テレビカメラに関し、特に、同期信号の伝送
方法に特徴を有する撮像部と制御部とが分離した構造の
テレビカメラに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a television camera, and more particularly to a television camera having a structure in which an imaging section and a control section are separated, which is characterized by a synchronization signal transmission method.
［従来の技術］
従来、この種のテレビカメラは、第２図に示すように撮
像部１と制御部３及びその間を接続する制御線２からな
っている。ｔｊｉ像部１は、固体撮像素子１０とその駆
動回路２０及びサンプリング回路４０から構成されてい
る。撮像部の駆動回路２０は制御部３から制御線２を通
して伝送された垂直同期信号及び水平同期信号に同期し
て動作し、固体撮像素子１０の駆動信号等を作成する。[Prior Art] Conventionally, this type of television camera is comprised of an imaging section 1, a control section 3, and a control line 2 connecting them, as shown in FIG. The tji image unit 1 includes a solid-state image sensor 10, its drive circuit 20, and a sampling circuit 40. The drive circuit 20 of the imaging section operates in synchronization with the vertical synchronization signal and horizontal synchronization signal transmitted from the control section 3 through the control line 2, and creates drive signals for the solid-state image sensor 10 and the like.
サンプリング回１？ｉ４０は、固体撮像素子１０の映像
出力信号を駆動回路２０から出力されるサンプルパルス
によってサンプリングしている。制御線２は、制御部３
から撮像部１へ垂直同期信号及び水平同期信号並びに撮
像部１の動作に必要な各種の電圧を伝送すると同時に、
撮像部１から制御部３へ映像出力信号の伝送を行う。Sampling time 1? i40 samples the video output signal of the solid-state image sensor 10 using a sample pulse output from the drive circuit 20. The control line 2 is connected to the control unit 3
At the same time, a vertical synchronization signal, a horizontal synchronization signal, and various voltages necessary for the operation of the imaging section 1 are transmitted from the imaging section 1 to the imaging section 1.
A video output signal is transmitted from the imaging section 1 to the control section 3.
［発明が解決しようとする課題］
上述した従来のテレビカメラは、制御線２によって伝送
すべき信号の種類が多く、制御線２の芯数が多い為め、
ケーブルの直径が大きくなる、単位長あたりケーブル単
価が高いといった欠点がある。[Problems to be Solved by the Invention] The conventional television camera described above has many types of signals to be transmitted through the control line 2, and the number of cores of the control line 2 is large.
The disadvantages are that the cable diameter becomes larger and the cable unit cost per unit length is higher.
［課題を解決する。ための手段］
本発明は、上述した従来のテレビカメラの課題を解決し
、制御線で伝送すべき信号の数を減らし、それによって
、制御線の芯数を減らし価格を低減する、あるいは、各
信号線の直径を大きくすることによって、電気抵抗を減
らし、結果として、制御線の長さを従来より長くできる
テレビカメラを提供することを目的とする。[Solve the problem. Means for Solving the Problem] The present invention solves the problems of the conventional television camera described above, reduces the number of signals to be transmitted by the control line, and thereby reduces the number of cores of the control line and reduces the cost. An object of the present invention is to provide a television camera in which electric resistance can be reduced by increasing the diameter of a signal line, and as a result, the length of a control line can be made longer than before.
本発明は、上記目的を達成するため、固体撮像素子を用
いた撮像部と制御部とか分１１ｉ１ した横道のテレビ
カメラにおいて、撮像部から制ｍ部に伝送する映像信号
の伝送線にテレビ信号の垂直同期信号成分と水平同期信
号成分とを重畳させて伝送することを特徴とする。In order to achieve the above object, the present invention provides a horizontal television camera in which an imaging section and a control section using a solid-state imaging device are separated. It is characterized by transmitting a vertical synchronizing signal component and a horizontal synchronizing signal component in a superimposed manner.
［実施例］
次に、本発明のテレビカメラについて図面を参照して説
明する。[Example] Next, a television camera of the present invention will be described with reference to the drawings.
第１図は、本発明に係るテレビカメラの一実施例のブロ
ックダイヤグラムである。FIG. 1 is a block diagram of an embodiment of a television camera according to the present invention.
Ｉｆｊｉ像部１は、発振回路５０、固体撮像素子１０、
その駆動回路２０及びサンプリング回１７８４０、並び
に、映像信号と水平垂直向１明信号の混合回路３０から
構成されている。撮像部１は、制御線２によって制御部
３に接続されている。制御部３は映像同期分Ｉｆｆ回路
６０．映１！Ａ信号処理回１／１ｓ７０．ＶＣＯ方式で
構成された発振回！／８９０及び同期信号発生回路８０
から構成されている。Ifji image unit 1 includes an oscillation circuit 50, a solid-state image sensor 10,
It is composed of a driving circuit 20, a sampling circuit 17840, and a mixing circuit 30 for mixing video signals and horizontal and vertical one-light signals. The imaging section 1 is connected to the control section 3 by a control line 2. The control unit 3 includes a video synchronization Iff circuit 60. Movie 1! A signal processing time 1/1s70. Oscillation circuit configured with VCO method! /890 and synchronization signal generation circuit 80
It consists of
１星像部１では、発振回路５０によって発振された信号
が駆動回路２０に送らｔＬ、垂直同期信号、水平同期信
号及び固体ｆｆｌ像素子の駆動信号並びにサンプル信号
が作成される。固体撮像素子の映像出力信号は、サンプ
リング回路４０にて駆動回路２０により作Ｉ戊されたサ
ンプル１３号て゛サンプリングされ、混合回１＋８３０
に送られる。混合回（￥Ｒ３０では、サンプリングされ
た映像信号と駆動回路２Ｏからの垂直同期信号と水平開
１明信号が混合して出力される。混合回路３０の出力信
号は、制御線２を通して制御部３に送られる。In the 1-star image unit 1, a signal oscillated by an oscillation circuit 50 is sent to a drive circuit 20 to generate tL, a vertical synchronization signal, a horizontal synchronization signal, a drive signal for the solid-state ffl image element, and a sample signal. The video output signal of the solid-state image sensor is sampled by the sampling circuit 40 using the sample No. 13 produced by the drive circuit 20, and the video output signal is sampled by the sampling circuit 40 using the sample No.
sent to. In the mixing circuit (¥R30), the sampled video signal, the vertical synchronization signal from the drive circuit 2O, and the horizontal open 1 bright signal are mixed and output.The output signal of the mixing circuit 30 is sent to the control unit 3 through the control line 2. sent to.
制御部３に伝送されて来た出力信号は、映像同期分離回
路６０によって映像信号と同期信号に分離される１分離
された同期信号のうち水平同期信号は制御部３の同期信
号発生回路８０の水平同期信号と位相比教され、制御部
３の発振回ＩＲｔ９０に発振周波数制御電圧として出力
される。映１象同期分離回１６０にて分離された同期信
号のうち垂直同期信号は、同期信号発生回路８０の垂直
リセット信号として使用され、制御部３とＭｉ像部１と
が完全に同期する様に構成されている。The output signal transmitted to the control section 3 is separated into a video signal and a synchronization signal by the video synchronization separation circuit 60. Among the separated synchronization signals, the horizontal synchronization signal is sent to the synchronization signal generation circuit 80 of the control section 3. It has a phase ratio with the horizontal synchronizing signal and is output to the oscillation circuit IRt90 of the control section 3 as an oscillation frequency control voltage. The vertical synchronization signal among the synchronization signals separated by the image one-image synchronization separation circuit 160 is used as a vertical reset signal of the synchronization signal generation circuit 80, so that the control section 3 and the Mi image section 1 are completely synchronized. It is configured.
映像信号は、制御部３の映像信号処理回路７０にて処理
され出力される。ここで、映像信号との重畳に使用する
水平及び垂直同期信号は、制御部３での映像信号処理の
都合り、固体ｖＩｉ像素子の光学的黒部分（オプチカル
ブラック）を避けた位相にしておく事か必要である。The video signal is processed by the video signal processing circuit 70 of the control section 3 and output. Here, the horizontal and vertical synchronizing signals used for superimposition with the video signal are set to a phase that avoids the optical black portion of the solid-state vIi image element for convenience of video signal processing in the control unit 3. It is necessary.
以上説明したように、本発明は、撮像部からの映像出力
信号に垂直同期信号と水平同期信号を重畳して伝送し、
制御部にて映像信号と同期信号を分離して撮像部と制御
部との同期を収る事により、従来の方式では必要となっ
ていた垂直同期信号及び水平同期信号の伝送線を不要に
することができる。これによって、制御線の芯数を減ら
し価格を低減できる。As explained above, the present invention superimposes a vertical synchronization signal and a horizontal synchronization signal on a video output signal from an imaging unit and transmits the superimposed signal.
By separating the video signal and synchronization signal in the control section and achieving synchronization between the imaging section and the control section, the transmission lines for the vertical and horizontal synchronization signals, which were required in the conventional method, are no longer required. be able to. This makes it possible to reduce the number of control wire cores and reduce the cost.
また、同じ直径の制御線で考えると、各信号線の直径を
太くすることができ、電気抵抗が低下するなめ、制御線
の長さを従来より延長できる効果がある。Furthermore, considering control lines of the same diameter, the diameter of each signal line can be made thicker, and the electric resistance is reduced, which has the effect of making the length of the control line longer than before.
第１図は、本発明に係るテレビカメラの一実施例のブロ
ック図である。そして、第２図は、従来のテレビカメラ
のブロック図である。
ｌ・・・＃Ｍ像部 ２・・・制御線３・・・
制御部 １０・・・固体ｔｉｌ像素子２０・・
・駆動回路 ３０・・・混合回路４０・・・サンプ
リング回路 ５０・・・発振回路６０・・・映像同
期分離回路
７０・・・映像信号処理回路
８０・・・同期信号発生回路
９０．１００・・・発振回路FIG. 1 is a block diagram of an embodiment of a television camera according to the present invention. FIG. 2 is a block diagram of a conventional television camera. l...#M image section 2...control line 3...
Control unit 10...Solid til image element 20...
・Drive circuit 30...Mixing circuit 40...Sampling circuit 50...Oscillation circuit 60...Video synchronization separation circuit 70...Video signal processing circuit 80...Synchronization signal generation circuit 90.100...・Oscillation circuit
Claims (1)
のテレビカメラにおいて、前記撮像部から前記制御部に
伝送する映像信号の伝送線にテレビ信号の垂直同期信号
成分と水平同期信号成分とを重畳させて伝送することを
特徴とするテレビカメラ。In a television camera having a structure in which an imaging section using a solid-state imaging device and a control section are separated, a transmission line for a video signal transmitted from the imaging section to the control section includes a vertical synchronization signal component and a horizontal synchronization signal component of the television signal. A television camera characterized by superimposing and transmitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63223091A JPH0271676A (en) | 1988-09-06 | 1988-09-06 | Television camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63223091A JPH0271676A (en) | 1988-09-06 | 1988-09-06 | Television camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0271676A true JPH0271676A (en) | 1990-03-12 |
Family
ID=16792693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63223091A Pending JPH0271676A (en) | 1988-09-06 | 1988-09-06 | Television camera |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0271676A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5387932A (en) * | 1991-07-06 | 1995-02-07 | Sony Corporation | Video camera capable of adding, transmitting, and extracting a reference signal indicative of the position of a reference pixel |
-
1988
- 1988-09-06 JP JP63223091A patent/JPH0271676A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5387932A (en) * | 1991-07-06 | 1995-02-07 | Sony Corporation | Video camera capable of adding, transmitting, and extracting a reference signal indicative of the position of a reference pixel |
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