JPS645287A - Auto-white balance device - Google Patents
Auto-white balance deviceInfo
- Publication number
- JPS645287A JPS645287A JP62163247A JP16324787A JPS645287A JP S645287 A JPS645287 A JP S645287A JP 62163247 A JP62163247 A JP 62163247A JP 16324787 A JP16324787 A JP 16324787A JP S645287 A JPS645287 A JP S645287A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- gain control
- field period
- integrating
- output
- 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.)
- Granted
Links
Landscapes
- Processing Of Color Television Signals (AREA)
Abstract
PURPOSE:To obtain the highly speedy and stable responsiveness of a gain control by providing a gain control transmitting element to transmit a color signal, the color signal integrating means of an input side and a gain holding means to keep the gain control signal of an obtained level stationary and to supply it to the gain control transmitting element. CONSTITUTION:The signal of a first field period f1 is inputted through analog switches 8 and 9 to gain control amplifiers GCA 4 and 5. In a vertical blanking period B2, when the integrating output value of R and B signals of the f1 passes through the GCAs 4 and 5, this value is feedback controlled so as to be matched to the integrating output value of a C signal. The output signal is controlled so as to be the almost same level as the output of a G signal line 2. Samely, as for an image signal after a field period f2, based on the color signal of a preceding field period, a white balance control is executed. Thus, since an delaying element is not included to a feedback loop, a response is speedy and stability is satisfactory.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62163247A JP2547215B2 (en) | 1987-06-29 | 1987-06-29 | Auto white balance device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62163247A JP2547215B2 (en) | 1987-06-29 | 1987-06-29 | Auto white balance device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS645287A true JPS645287A (en) | 1989-01-10 |
JP2547215B2 JP2547215B2 (en) | 1996-10-23 |
Family
ID=15770154
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62163247A Expired - Fee Related JP2547215B2 (en) | 1987-06-29 | 1987-06-29 | Auto white balance device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2547215B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016003958A1 (en) | 2015-04-03 | 2016-10-06 | Hirata Corporation | Processing method, manufacturing method and positioning device |
-
1987
- 1987-06-29 JP JP62163247A patent/JP2547215B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016003958A1 (en) | 2015-04-03 | 2016-10-06 | Hirata Corporation | Processing method, manufacturing method and positioning device |
Also Published As
Publication number | Publication date |
---|---|
JP2547215B2 (en) | 1996-10-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS53106520A (en) | Memory type gain controller | |
ES448125A1 (en) | Gain control arrangement useful in a television signal processing system | |
KR900002985B1 (en) | Automatic gain control circuit | |
JPS645287A (en) | Auto-white balance device | |
JPS52134982A (en) | Control system | |
EP0251530A3 (en) | Improvements relating to amplifier gain control circuit arrangements | |
DE3477452D1 (en) | Circuit arrangement for a digital level control | |
ES463657A1 (en) | Automatic chrominance gain control system | |
ES8306949A1 (en) | Signal gain control with DC compensation | |
JPS6460088A (en) | Automatic white balance control circuit | |
JPS645286A (en) | White balance device | |
JPS5525243A (en) | Color temperature correction device | |
GB1512149A (en) | Colour television | |
JPS56141689A (en) | Color stabilizing equipment | |
JPS5526784A (en) | Video amplifier | |
JPS57138280A (en) | Color image pickup device | |
JPS56169973A (en) | Automatic gain controlling device | |
MY129300A (en) | Automatic chroma control circuit with controlled saturation reduction | |
JPS6460090A (en) | Automatic white balance control circuit | |
JPS55163970A (en) | Color solid-state pickup unit | |
JPS5690688A (en) | Automatic white balance circuit of color television camera | |
JPS536553A (en) | Variable gain amplifier | |
JPS6423688A (en) | Automatic gain control circuit | |
JPS6437190A (en) | White balance setting circuit | |
JPS6472685A (en) | Automatic white balance adjusting circuit for color television camera |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |