JPS5528627A - Automatic white balance system in color pick up unit - Google Patents
Automatic white balance system in color pick up unitInfo
- Publication number
- JPS5528627A JPS5528627A JP10181578A JP10181578A JPS5528627A JP S5528627 A JPS5528627 A JP S5528627A JP 10181578 A JP10181578 A JP 10181578A JP 10181578 A JP10181578 A JP 10181578A JP S5528627 A JPS5528627 A JP S5528627A
- Authority
- JP
- Japan
- Prior art keywords
- white balance
- ratio
- light incident
- photo electric
- color
- 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
Landscapes
- Processing Of Color Television Signals (AREA)
Abstract
PURPOSE: To obtain automatically the suited white balance at all times, by the ratio of the photo electric conversion element outputs of two colors taking light widely.
CONSTITUTION: The light incident from a broad range including the light incident to the optical system 1 passes through the wide lens 18 and is separated into two color components by the color filters 19, and 20, and they are converted into electric amount with the photo electric converters 21 and 22. The light incident to the wide lens 18 is from a broad range. Although the light component at a reference color temperature can be regarded as the same amount, if the color temperature is shifted, the ratio of outputs from the photo electric conversion elements 21 and 22 is changed. Thus, the memory controller 23 detects and processes the ration of output to produce the control signal based on the ratio of output given in advance depending on the shift of the white balance and to control the gain of the chroma signal amplifiers 8,9,10, allowing to keep the white balance.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10181578A JPS5528627A (en) | 1978-08-23 | 1978-08-23 | Automatic white balance system in color pick up unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10181578A JPS5528627A (en) | 1978-08-23 | 1978-08-23 | Automatic white balance system in color pick up unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5528627A true JPS5528627A (en) | 1980-02-29 |
Family
ID=14310613
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10181578A Pending JPS5528627A (en) | 1978-08-23 | 1978-08-23 | Automatic white balance system in color pick up unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5528627A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57155888A (en) * | 1981-03-23 | 1982-09-27 | Sony Corp | Auto white balancing circuit |
JPS57193193A (en) * | 1981-05-25 | 1982-11-27 | Hitachi Denshi Ltd | Automatic registration compensating method of color television camera |
JPS58215884A (en) * | 1982-06-10 | 1983-12-15 | Sony Corp | Electronic camera |
JPS59174084A (en) * | 1983-03-24 | 1984-10-02 | Hitachi Ltd | Color video camera |
JPS6185982U (en) * | 1984-11-12 | 1986-06-05 | ||
JPH0263295A (en) * | 1988-08-29 | 1990-03-02 | Sony Corp | White balance adjustment circuit |
US5185658A (en) * | 1990-02-05 | 1993-02-09 | Mitsubishi Denki Kabushiki Kaisha | Automatic white balance regulating device with exposure detecting optical sensor |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4116011Y1 (en) * | 1966-04-01 | 1966-07-26 |
-
1978
- 1978-08-23 JP JP10181578A patent/JPS5528627A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4116011Y1 (en) * | 1966-04-01 | 1966-07-26 |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57155888A (en) * | 1981-03-23 | 1982-09-27 | Sony Corp | Auto white balancing circuit |
JPH0230230B2 (en) * | 1981-03-23 | 1990-07-05 | Sony Corp | |
JPS57193193A (en) * | 1981-05-25 | 1982-11-27 | Hitachi Denshi Ltd | Automatic registration compensating method of color television camera |
JPS58215884A (en) * | 1982-06-10 | 1983-12-15 | Sony Corp | Electronic camera |
JPS59174084A (en) * | 1983-03-24 | 1984-10-02 | Hitachi Ltd | Color video camera |
JPH026473B2 (en) * | 1983-03-24 | 1990-02-09 | Hitachi Ltd | |
JPS6185982U (en) * | 1984-11-12 | 1986-06-05 | ||
JPH0263295A (en) * | 1988-08-29 | 1990-03-02 | Sony Corp | White balance adjustment circuit |
US5185658A (en) * | 1990-02-05 | 1993-02-09 | Mitsubishi Denki Kabushiki Kaisha | Automatic white balance regulating device with exposure detecting optical sensor |
US5298980A (en) * | 1990-02-05 | 1994-03-29 | Mitsubishi Denki Kabushiki Kaisha | Automatic white balance regulating device with exposure detecting optical sensor |
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