JPS5683181A - Television camera device - Google Patents
Television camera deviceInfo
- Publication number
- JPS5683181A JPS5683181A JP15989979A JP15989979A JPS5683181A JP S5683181 A JPS5683181 A JP S5683181A JP 15989979 A JP15989979 A JP 15989979A JP 15989979 A JP15989979 A JP 15989979A JP S5683181 A JPS5683181 A JP S5683181A
- Authority
- JP
- Japan
- Prior art keywords
- output
- circuit
- adder
- fed
- iris
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
Abstract
PURPOSE:To enable to obtain the best quality of a picture at all times, by changing an iris of lens within a range of iris where the performance of a lens is excellent and changing the gain of amplifier at other ranges. CONSTITUTION:Video signals R, G, B are fed to a level detector 10 to detect the peak level. The detected output from the detector 10 and the control signal from the iris servo remote control 11 are added at the adder 12. In the iris control, the output of the adder 12 is input to comparators 13, 14, and compared with the upper and lower limit set values, and the output is fed to the sample hold circuit 16 via the NAND circuit 15 to control the operation of the circuit 16 to receive the output of the adder 12. On the other hand, the output of the adder 12 is fed to one input terminal of the differential amplifier 17 and the output of the circuit 16 is fed to another input terminal. Further, when the circuit feeds the input as it is to the output side, the sample hold circuit 18 keeps the video gain control voltage to a constant value. Thus, the output of the circuit 18 is changed according to the output of the adder 12 in other range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15989979A JPS5683181A (en) | 1979-12-10 | 1979-12-10 | Television camera device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15989979A JPS5683181A (en) | 1979-12-10 | 1979-12-10 | Television camera device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5683181A true JPS5683181A (en) | 1981-07-07 |
Family
ID=15703598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15989979A Pending JPS5683181A (en) | 1979-12-10 | 1979-12-10 | Television camera device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5683181A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5711583A (en) * | 1980-06-25 | 1982-01-21 | Hitachi Ltd | Television camera |
| JPS58111576A (en) * | 1981-12-25 | 1983-07-02 | Matsushita Electric Ind Co Ltd | Television camera device |
| JPS58194469A (en) * | 1982-05-07 | 1983-11-12 | Canon Inc | Method and device for image pickup |
| JPS6057777A (en) * | 1983-09-08 | 1985-04-03 | Canon Inc | Image pickup device used together with lighting device |
| JPS6050568U (en) * | 1983-09-14 | 1985-04-09 | ミノルタ株式会社 | electronic still camera |
| JPS6066579A (en) * | 1983-09-22 | 1985-04-16 | Sony Corp | Video camera |
| JPH05127218A (en) * | 1991-04-02 | 1993-05-25 | Gold Star Co Ltd | Circuit and method for adjusting opening and closing of cam coder iris diaphragm |
| JP2007104510A (en) * | 2005-10-07 | 2007-04-19 | Hitachi Kokusai Electric Inc | Sensitivity adjustment method and sensitivity adjustment apparatus for television camera |
-
1979
- 1979-12-10 JP JP15989979A patent/JPS5683181A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5711583A (en) * | 1980-06-25 | 1982-01-21 | Hitachi Ltd | Television camera |
| JPS58111576A (en) * | 1981-12-25 | 1983-07-02 | Matsushita Electric Ind Co Ltd | Television camera device |
| JPS58194469A (en) * | 1982-05-07 | 1983-11-12 | Canon Inc | Method and device for image pickup |
| JPS6057777A (en) * | 1983-09-08 | 1985-04-03 | Canon Inc | Image pickup device used together with lighting device |
| JPS6050568U (en) * | 1983-09-14 | 1985-04-09 | ミノルタ株式会社 | electronic still camera |
| JPS6066579A (en) * | 1983-09-22 | 1985-04-16 | Sony Corp | Video camera |
| JPH05127218A (en) * | 1991-04-02 | 1993-05-25 | Gold Star Co Ltd | Circuit and method for adjusting opening and closing of cam coder iris diaphragm |
| JP2007104510A (en) * | 2005-10-07 | 2007-04-19 | Hitachi Kokusai Electric Inc | Sensitivity adjustment method and sensitivity adjustment apparatus for television camera |
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