JPS60181969U - Video camera - Google Patents
Video cameraInfo
- Publication number
- JPS60181969U JPS60181969U JP6920684U JP6920684U JPS60181969U JP S60181969 U JPS60181969 U JP S60181969U JP 6920684 U JP6920684 U JP 6920684U JP 6920684 U JP6920684 U JP 6920684U JP S60181969 U JPS60181969 U JP S60181969U
- Authority
- JP
- Japan
- Prior art keywords
- aperture
- illuminance
- video signal
- output
- video 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
Links
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は、従来のビデオカメラのブロック図である。第
２図は、この考案の一実施例であるビデオカメラのブロ
ック図である。第３図は、被写体の照度と照度検出装置
出力との関係を示す図である。第４図は、絞り制御回路
の制御特性を示す図である。第５図は、この考案の一実
施例であるビデオカメラにおける被写体の照度とテレビ
ジョン合成映像信号レベルとの関係を示す図である。
図において、１は被写体、２はレンズ、３は絞り、４は
光電変換回路、５は映像信号処理回路、６は絞り調整回
路、７は映像信号出力端子、８は照度検出装置、９は絞
り制御回路である。なお各図中同一符号は同一または相
当部分を示すものとする。FIG. 1 is a block diagram of a conventional video camera. FIG. 2 is a block diagram of a video camera that is an embodiment of this invention. FIG. 3 is a diagram showing the relationship between the illuminance of a subject and the output of the illuminance detection device. FIG. 4 is a diagram showing control characteristics of the aperture control circuit. FIG. 5 is a diagram showing the relationship between the illuminance of a subject and the television composite video signal level in a video camera that is an embodiment of the invention. In the figure, 1 is the subject, 2 is the lens, 3 is the aperture, 4 is the photoelectric conversion circuit, 5 is the video signal processing circuit, 6 is the aperture adjustment circuit, 7 is the video signal output terminal, 8 is the illuminance detection device, 9 is the aperture It is a control circuit. Note that the same reference numerals in each figure indicate the same or corresponding parts.
Claims (2)
手段を介して入射する光を電気信号に変換する光電変換
手段と、 前記光電変換手段に入射する光を調整する絞り手段と１ 、前記光電変換手段の出力を映像信号処理する映像信号
処理手段と、 前記映像信号処理手段の出力を予め定めるレベルにすべ
く、前記映像信号処理手段から帰還する信号に応答して
前記絞り手段を調整する絞り調整手段とを備えるビデオ
カメラにおいて、前記被写体の照度を検出する照度検出
手段と、 前記照度検出手段の出力に応答して前記絞り調整手段を
さらに制御する絞り制御手段とを備えることを特徴とす
るビデオカメラ。(1) an optical means for condensing light from a subject; a photoelectric conversion means for converting the light incident through the optical means into an electrical signal; and an aperture means for adjusting the light incident on the photoelectric conversion means; , a video signal processing means for processing the output of the photoelectric conversion means into a video signal; and a diaphragm means for controlling the aperture in response to a signal fed back from the video signal processing means in order to bring the output of the video signal processing means to a predetermined level. The video camera is provided with an aperture adjustment means for adjusting the aperture adjustment means, further comprising an illuminance detection means for detecting the illuminance of the subject, and an aperture control means for further controlling the aperture adjustment means in response to an output of the illuminance detection means. Features a video camera.
予め定める第２の照度間にあるときには、前記映像信号
処理手段の出力を前記予め定める゛ レベルに対し相対
的に小さくなるように、前記絞り制御手段により前記絞
り調整手段を制御して前記絞り手段を絞る特許請求の範
囲第１項記載のビデオカメラ。(2) when the illuminance of the subject is between a predetermined first illuminance and a predetermined second illuminance, the output of the video signal processing means is made to be smaller relative to the predetermined level; 2. A video camera according to claim 1, wherein said aperture control means controls said aperture adjustment means to narrow down said aperture means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6920684U JPS60181969U (en) | 1984-05-10 | 1984-05-10 | Video camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6920684U JPS60181969U (en) | 1984-05-10 | 1984-05-10 | Video camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60181969U true JPS60181969U (en) | 1985-12-03 |
Family
ID=30604659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6920684U Pending JPS60181969U (en) | 1984-05-10 | 1984-05-10 | Video camera |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60181969U (en) |
-
1984
- 1984-05-10 JP JP6920684U patent/JPS60181969U/en active Pending
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