JPS611982U - Automatic white balance adjustment device - Google Patents
Automatic white balance adjustment deviceInfo
- Publication number
- JPS611982U JPS611982U JP8650484U JP8650484U JPS611982U JP S611982 U JPS611982 U JP S611982U JP 8650484 U JP8650484 U JP 8650484U JP 8650484 U JP8650484 U JP 8650484U JP S611982 U JPS611982 U JP S611982U
- Authority
- JP
- Japan
- Prior art keywords
- output
- white balance
- green
- red
- 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
Landscapes
- Color Television Image Signal Generators (AREA)
- Processing Of Color Television Signals (AREA)
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図はこの考案の一例のブロック図、第２図はこの考
案装置の概要を説明するための図、第３図は従来装置の
説明のための図、第４図はこの種装置の他の例のブロッ
ク図である。
ＩＲ，ＩＧ及び１Ｂは外部受光素子、２は白色半透明板
、５はＡＧＣアンプ、９Ｒ及び９Ｂはゲインコントロー
ルアンプ、１２Ｒ及び１２Ｂはホワイトバランス調整用
の制御電圧を記憶するメモリとしてのコンデンサである
。FIG. 1 is a block diagram of an example of this invention, FIG. 2 is a diagram for explaining the outline of the device of this invention, FIG. 3 is a diagram for explaining a conventional device, and FIG. 4 is a diagram for explaining other devices of this type. FIG. 2 is a block diagram of an example of FIG. IR, IG, and 1B are external light receiving elements, 2 is a white translucent plate, 5 is an AGC amplifier, 9R and 9B are gain control amplifiers, and 12R and 12B are capacitors as a memory for storing control voltages for white balance adjustment. .
Claims (1)
特性と同じ分光特性をもった外部受光素子を上記カメラ
の主センサーの他に設けると共にこの外部受光素子の前
面に白色半透明板を設け、上記外部受光素子から得られ
る赤、緑及び青の色光の受光出力を時分割的に切り換え
て上記カメラの絞りに応じたＡＧＣがかけられるＡＧＣ
アンプに供給すると共に、このＡＧＣアンプの出力を上
記時分割に同期したタイミングで赤、緑及び青用の出力
のサンプリングホールド回路に供給し、このサンプリン
グホールド回路の出力に基いて形成したホワイトバラン
ス調整信号をビデオ信号の垂直ブランキング期間で記憶
し、その記憶出力によつて上記カメラの出力である赤、
緑及び青の原色信号に対してホワイトバランスがかけら
れるようにされた自動ホワイトバランス調整装置。In addition to the main sensor of the camera, an external light-receiving element having the same spectral characteristics as the main sensor of the camera for red, green, and blue color light is provided, and a white translucent plate is provided in front of the external light-receiving element. AGC that performs AGC according to the aperture of the camera by time-divisionally switching the light receiving output of red, green, and blue color light obtained from the external light receiving element.
In addition to supplying the output to the amplifier, the output of this AGC amplifier is also supplied to a sampling and holding circuit for outputs for red, green, and blue at a timing synchronized with the above time division, and white balance adjustment is performed based on the output of this sampling and holding circuit. The signal is stored in the vertical blanking period of the video signal, and the stored output produces the red, which is the output of the camera,
An automatic white balance adjustment device capable of applying white balance to primary color signals of green and blue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8650484U JPS611982U (en) | 1984-06-11 | 1984-06-11 | Automatic white balance adjustment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8650484U JPS611982U (en) | 1984-06-11 | 1984-06-11 | Automatic white balance adjustment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS611982U true JPS611982U (en) | 1986-01-08 |
Family
ID=30637878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8650484U Pending JPS611982U (en) | 1984-06-11 | 1984-06-11 | Automatic white balance adjustment device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS611982U (en) |
-
1984
- 1984-06-11 JP JP8650484U patent/JPS611982U/en active Pending
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