JPH048579U - - Google Patents
Info
- Publication number
- JPH048579U JPH048579U JP1990049353U JP4935390U JPH048579U JP H048579 U JPH048579 U JP H048579U JP 1990049353 U JP1990049353 U JP 1990049353U JP 4935390 U JP4935390 U JP 4935390U JP H048579 U JPH048579 U JP H048579U
- Authority
- JP
- Japan
- Prior art keywords
- camera device
- video signal
- television camera
- aperture
- signal
- 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
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Exposure Control For Cameras (AREA)
Description
第１図は本考案の一実施例の構成図、第２図は
第１図の乗算器５の入出力波形図、第３図は従来
の自動アイリス系の構成図、第４図は第３図のゲ
ート回路１６の入出力波形図である。
１……映像入力信号、２……映像入力信号端子
、３……映像入力端子、４……コントロール信号
入力端子、５……乗算回路、６……検波回路、７
……基準設定器、８……比較出力増幅器、９……
制御電圧信号出力端子、１０……乗算回路出力信
号、１１……ゲート信号、１２，１３，１４……
抵抗器、１５……ＦＥＴ、１６……ゲート回路、
１７……ゲート回路出力信号、１８……ゲート信
号入力端子、１９……制御電圧信号。
FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is an input/output waveform diagram of the multiplier 5 shown in FIG. 1, FIG. 3 is a block diagram of a conventional automatic iris system, and FIG. 3 is an input/output waveform diagram of the gate circuit 16 shown in the figure. FIG. DESCRIPTION OF SYMBOLS 1...Video input signal, 2...Video input signal terminal, 3...Video input terminal, 4...Control signal input terminal, 5...Multiplication circuit, 6...Detection circuit, 7
...Reference setter, 8...Comparison output amplifier, 9...
Control voltage signal output terminal, 10... Multiplier circuit output signal, 11... Gate signal, 12, 13, 14...
Resistor, 15...FET, 16...gate circuit,
17...Gate circuit output signal, 18...Gate signal input terminal, 19...Control voltage signal.
Claims (1)
て求めた被写体の明るさに応じて自動的に制御す
る自動アイリス系を備えたテレビジヨンカメラ装
置において、映像信号を切り出す期間と切出しレ
ベルを任意に変えることができるようにしたこと
を特徴とするテレビジヨンカメラ装置。 ２ 前記映像信号の切出しを、全画面領域の映像
信号と、レンズの絞り値の変化がスムーズになる
ようにあらかじめ設定した絞り特性を有するコン
トロール信号との重み付け乗算にもとづいて行な
うことを特徴とする請求項１記載のテレビジヨン
カメラ装置。[Scope of Claim for Utility Model Registration] 1. In a television camera device equipped with an automatic iris system that automatically controls the aperture of the lens according to the brightness of the subject determined by cutting out a part of the video signal, A television camera device characterized in that the period and level of clipping can be arbitrarily changed. 2. The video signal is cut out based on a weighted multiplication of the video signal of the entire screen area and a control signal having an aperture characteristic set in advance so that the aperture value of the lens changes smoothly. A television camera device according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990049353U JPH048579U (en) | 1990-05-11 | 1990-05-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990049353U JPH048579U (en) | 1990-05-11 | 1990-05-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH048579U true JPH048579U (en) | 1992-01-27 |
Family
ID=31566966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990049353U Pending JPH048579U (en) | 1990-05-11 | 1990-05-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH048579U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59140869A (en) * | 1983-01-27 | 1984-08-13 | Iseki & Co Ltd | Apparatus for removing protecting bag from fruit |
-
1990
- 1990-05-11 JP JP1990049353U patent/JPH048579U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59140869A (en) * | 1983-01-27 | 1984-08-13 | Iseki & Co Ltd | Apparatus for removing protecting bag from fruit |
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