JPS55133192A - Color temperature correction unit of color television camera unit - Google Patents
Color temperature correction unit of color television camera unitInfo
- Publication number
- JPS55133192A JPS55133192A JP4029979A JP4029979A JPS55133192A JP S55133192 A JPS55133192 A JP S55133192A JP 4029979 A JP4029979 A JP 4029979A JP 4029979 A JP4029979 A JP 4029979A JP S55133192 A JPS55133192 A JP S55133192A
- Authority
- JP
- Japan
- Prior art keywords
- red
- green
- color temperature
- color
- temperature correction
- 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
- H04N23/80—Camera processing pipelines; Components thereof
- H04N23/84—Camera processing pipelines; Components thereof for processing colour signals
- H04N23/88—Camera processing pipelines; Components thereof for processing colour signals for colour balance, e.g. white-balance circuits or colour temperature control
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Color Television Image Signal Generators (AREA)
Abstract
PURPOSE:To enable the color temperature correction automatically and accurately, by detecting the surrounding light of objective with the detectors of red, green and blue light provided at the external of the camera console for color temperature correction. CONSTITUTION:The light collector 6 is provided on the upper part of the TV camera console 2. The color detectors 8, 10, 12 detecting red, green and blue light are provided in the light collector 6. The output of the detectors 8, 10, 12 is integrated with the integration circuits 14, 16, 18 and fed to the subtraction circuit 20. The circuit 20 introduces the signal subtracting green component from the red and blue light component respectively. These signals are held at the hold circuits 24, 24 via the limiter circuits 22, 22. On the other hand, the output signal from the pick up tube 30 is fed to the signal processing circuit as the red, green and blue signals. These red and blue signals are fed to the amplifiers 34, 36, to control the gain in response to the output level from the circuits 24, 24. Accordingly, each output level is equal to the green level being the reference for color temperature control.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4029979A JPS55133192A (en) | 1979-04-05 | 1979-04-05 | Color temperature correction unit of color television camera unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4029979A JPS55133192A (en) | 1979-04-05 | 1979-04-05 | Color temperature correction unit of color television camera unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55133192A true JPS55133192A (en) | 1980-10-16 |
Family
ID=12576725
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4029979A Pending JPS55133192A (en) | 1979-04-05 | 1979-04-05 | Color temperature correction unit of color television camera unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55133192A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57181170U (en) * | 1981-05-11 | 1982-11-17 | ||
JPS5972079U (en) * | 1982-11-05 | 1984-05-16 | 株式会社エコ− | White balance filter in video camera |
US5365267A (en) * | 1992-06-19 | 1994-11-15 | Linvatec Corporation | White balance target |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5055221A (en) * | 1973-09-12 | 1975-05-15 | ||
JPS53106520A (en) * | 1977-02-28 | 1978-09-16 | Sony Corp | Memory type gain controller |
-
1979
- 1979-04-05 JP JP4029979A patent/JPS55133192A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5055221A (en) * | 1973-09-12 | 1975-05-15 | ||
JPS53106520A (en) * | 1977-02-28 | 1978-09-16 | Sony Corp | Memory type gain controller |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57181170U (en) * | 1981-05-11 | 1982-11-17 | ||
JPS636943Y2 (en) * | 1981-05-11 | 1988-02-27 | ||
JPS5972079U (en) * | 1982-11-05 | 1984-05-16 | 株式会社エコ− | White balance filter in video camera |
US5365267A (en) * | 1992-06-19 | 1994-11-15 | Linvatec Corporation | White balance target |
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