JPS6423698A - Ttl white balance circuit - Google Patents
Ttl white balance circuitInfo
- Publication number
- JPS6423698A JPS6423698A JP62179467A JP17946787A JPS6423698A JP S6423698 A JPS6423698 A JP S6423698A JP 62179467 A JP62179467 A JP 62179467A JP 17946787 A JP17946787 A JP 17946787A JP S6423698 A JPS6423698 A JP S6423698A
- Authority
- JP
- Japan
- Prior art keywords
- high brightness
- white balance
- color difference
- detecting
- information
- 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 set a white balance with high accuracy by providing a gate circuit for gating a white balance adjusting output with the high brightness part detecting output of an object. CONSTITUTION:High brightness object information is discriminated by comparing a luminance signal with a high brightness level voltage in a high brightness detecting circuit 11. The high brightness part in the object is detected. A part discriminated to be the high brightness, namely, the color difference signal information of the detecting part of the high brightness part is sampled in the gate circuit 12 so as not to use as the color difference information for setting the white balance. Thereby, the white balance is set by the color difference signal information except the high brightness part to prevent a color dislocation and set the white balance with high accuracy.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62179467A JPS6423698A (en) | 1987-07-17 | 1987-07-17 | Ttl white balance circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62179467A JPS6423698A (en) | 1987-07-17 | 1987-07-17 | Ttl white balance circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6423698A true JPS6423698A (en) | 1989-01-26 |
Family
ID=16066360
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62179467A Pending JPS6423698A (en) | 1987-07-17 | 1987-07-17 | Ttl white balance circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6423698A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH031790A (en) * | 1989-05-30 | 1991-01-08 | Canon Inc | Image pickup device |
JPH031762A (en) * | 1989-05-30 | 1991-01-08 | Canon Inc | Image pickup device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6235792A (en) * | 1985-08-09 | 1987-02-16 | Hitachi Ltd | Adjustment system for white balance |
-
1987
- 1987-07-17 JP JP62179467A patent/JPS6423698A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6235792A (en) * | 1985-08-09 | 1987-02-16 | Hitachi Ltd | Adjustment system for white balance |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH031790A (en) * | 1989-05-30 | 1991-01-08 | Canon Inc | Image pickup device |
JPH031762A (en) * | 1989-05-30 | 1991-01-08 | Canon Inc | Image pickup device |
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