JPS6285061U - - Google Patents
Info
- Publication number
- JPS6285061U JPS6285061U JP1985175719U JP17571985U JPS6285061U JP S6285061 U JPS6285061 U JP S6285061U JP 1985175719 U JP1985175719 U JP 1985175719U JP 17571985 U JP17571985 U JP 17571985U JP S6285061 U JPS6285061 U JP S6285061U
- Authority
- JP
- Japan
- Prior art keywords
- automatic gain
- aperture
- gain control
- control circuit
- switching circuit
- 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
- 230000007246 mechanism Effects 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 1
Description
第１図及び第２図は夫々本考案回路の一実施例
のブロツク系統図及びその一部機構の具体的構成
図、第３図は従来における絞り値対映像出力特性
図、第４図は従来回路の一例のブロツク系統図で
ある。
１……絞り機構、２……駆動コイル、６……自
動絞りレベル検出器、７……利得制御増幅器、８
……自動利得調整レベル検出回路、９……自動―
手動切換スイツチ、１０……手動絞り調節器、１
１……固定利得制御電位発生回路、１２……出力
端子、１３……切換スイツチ。
Figures 1 and 2 are block diagrams of an embodiment of the circuit of the present invention and specific configuration diagrams of some of its mechanisms, Figure 3 is a conventional aperture value vs. video output characteristic diagram, and Figure 4 is a conventional diagram. FIG. 2 is a block system diagram of an example of a circuit. DESCRIPTION OF SYMBOLS 1... Aperture mechanism, 2... Drive coil, 6... Automatic aperture level detector, 7... Gain control amplifier, 8
...Automatic gain adjustment level detection circuit, 9...Automatic -
Manual selector switch, 10...Manual aperture adjuster, 1
1... Fixed gain control potential generation circuit, 12... Output terminal, 13... Changeover switch.
Claims (1)
り機構の絞り値調整を手動でも行ない得る手段と
を有するテレビジヨンカメラにおいて、手動によ
り絞り調節器の変位位置が該絞り機構の開放状態
又はその近傍に達したことを検出して上記自動利
得制御回路又は自動利得切換回路の動作をオンせ
しめる一方、該絞り調節器の変位位置が該絞り機
構が開放又はその近傍でない位置に調整された状
態の位置にある時上記自動利得制御回路又は自動
利得切換回路の動作をオフせしめる手段を設けて
なるテレビジヨンカメラ。 In a television camera having an automatic gain control circuit or an automatic gain switching circuit and a means for manually adjusting the aperture value of the aperture mechanism, the aperture adjuster is manually displaced to the open state of the aperture mechanism or in the vicinity thereof. is detected and turns on the operation of the automatic gain control circuit or the automatic gain switching circuit, while the displacement position of the diaphragm adjuster is adjusted to a position where the diaphragm mechanism is not open or close to it. A television camera comprising means for turning off the operation of the automatic gain control circuit or the automatic gain switching circuit at certain times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985175719U JPS6285061U (en) | 1985-11-15 | 1985-11-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985175719U JPS6285061U (en) | 1985-11-15 | 1985-11-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6285061U true JPS6285061U (en) | 1987-05-30 |
Family
ID=31115296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985175719U Pending JPS6285061U (en) | 1985-11-15 | 1985-11-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6285061U (en) |
-
1985
- 1985-11-15 JP JP1985175719U patent/JPS6285061U/ja active Pending