JPS62143363U - - Google Patents
Info
- Publication number
- JPS62143363U JPS62143363U JP3054186U JP3054186U JPS62143363U JP S62143363 U JPS62143363 U JP S62143363U JP 3054186 U JP3054186 U JP 3054186U JP 3054186 U JP3054186 U JP 3054186U JP S62143363 U JPS62143363 U JP S62143363U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- iris
- circuit
- control signal
- video 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 2
Description
第２図は従来のオートアイリス回路のブロツク
図、第１図は本考案によるオートアイリス回路の
一例のブロツク図である。
２：アイリス、５：仲均値回路、７：直流増幅
器、８：アイリス駆動モータ、９：微分回路、１
０：加減算回路。
FIG. 2 is a block diagram of a conventional auto-iris circuit, and FIG. 1 is a block diagram of an example of an auto-iris circuit according to the present invention. 2: Iris, 5: Average value circuit, 7: DC amplifier, 8: Iris drive motor, 9: Differential circuit, 1
0: Addition/subtraction circuit.
Claims (1)
ータや駆動するオートアイリス回路において、映
像信号のレベル変化速度に比例する信号を作り出
す手段を有し、該信号も制御信号としたことを特
徴とするオートアイリス回路。 An auto iris circuit comprising means for generating a signal proportional to a level change rate of a video signal in an iris motor or an auto iris circuit that drives an iris motor using the average value of a video signal as a control signal, and said signal also being used as a control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3054186U JPS62143363U (en) | 1986-03-05 | 1986-03-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3054186U JPS62143363U (en) | 1986-03-05 | 1986-03-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62143363U true JPS62143363U (en) | 1987-09-10 |
Family
ID=30835444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3054186U Pending JPS62143363U (en) | 1986-03-05 | 1986-03-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62143363U (en) |
-
1986
- 1986-03-05 JP JP3054186U patent/JPS62143363U/ja active Pending