JPS6429967U - - Google Patents
Info
- Publication number
- JPS6429967U JPS6429967U JP12445887U JP12445887U JPS6429967U JP S6429967 U JPS6429967 U JP S6429967U JP 12445887 U JP12445887 U JP 12445887U JP 12445887 U JP12445887 U JP 12445887U JP S6429967 U JPS6429967 U JP S6429967U
- Authority
- JP
- Japan
- Prior art keywords
- solid
- image sensor
- video signal
- state image
- deriving
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Description
第1図はこの考案の一実施例を示す回路図であ
る。
12…固体撮像素子、13…ドライブ回路、1
4…シヤツタドライブ回路、15…サンプリング
回路、16…平均レベル検出回路、17,19…
増幅器、18…自動利得制御回路、21…切換回
路。
FIG. 1 is a circuit diagram showing an embodiment of this invention. 12... Solid-state image sensor, 13... Drive circuit, 1
4... Shutter drive circuit, 15... Sampling circuit, 16... Average level detection circuit, 17, 19...
Amplifier, 18... automatic gain control circuit, 21... switching circuit.
Claims (1)
用いたテレビジヨン方式カメラにおいて、前記固
体撮像素子から映像信号を導出する導出手段と、
この手段から得られた映像信号のレベルに応じた
出力を得る平均レベル検出回路と、この平均レベ
ル検出回路の出力に応じて、上記固体撮像素子の
電子シヤツタ機能を得るためのドライブパルスの
タイミングを調整するシヤツタドライブ回路と、
前記導出手段からの映像信号を増幅する自動利得
制御増幅器とを具備したことを特徴とする電子カ
メラの自動感度制御回路。 In a television camera using a solid-state image sensor capable of varying electronic shutter speed, a deriving means for deriving a video signal from the solid-state image sensor;
An average level detection circuit that obtains an output according to the level of the video signal obtained from this means, and a timing of a drive pulse for obtaining the electronic shutter function of the solid-state image sensor according to the output of this average level detection circuit. Shutter drive circuit to adjust,
An automatic sensitivity control circuit for an electronic camera, comprising an automatic gain control amplifier for amplifying the video signal from the deriving means.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12445887U JPS6429967U (en) | 1987-08-14 | 1987-08-14 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12445887U JPS6429967U (en) | 1987-08-14 | 1987-08-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6429967U true JPS6429967U (en) | 1989-02-22 |
Family
ID=31374207
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12445887U Pending JPS6429967U (en) | 1987-08-14 | 1987-08-14 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6429967U (en) |
-
1987
- 1987-08-14 JP JP12445887U patent/JPS6429967U/ja active Pending
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