Copyright © 2008 LG Electronics. Inc. All right reserved. 40 LGE Internal Use Only
Only for training and service purposes
40
“Component”. Choosing the first item “Auto Calibration” in factory mode will reach this basic requirement. The
detail calibration method is shown at section 1.4.1. After signal calibration, we can go to next step, color
temperature alignment. The default calibration values are as below
AV-CVBS NTSC
Tuner-CVBS NTSC
Contrast
134
156
Brightness
33
15
Saturation
173
209
Hue
128
128
Component NTSC
PC 1024x768@60Hz
Digital R Gain
642
702
Digital G Gain
636
700
Digital B Gain
643
708
Digital R Offset
1741
2033
Digital G Offset
2010
2033
Digital B Offset
1741
2033
Analog R Gain
0
0
Analog G Gain
0
0
Analog B Gain
0
0
Analog R Offset
240
128
Analog G Offset
192
128
Analog B Offset
240
128
Below are basic concepts of adjusting RGB gain/offset that can meet spec requirement. When tuning white
balance (color temperature), we manually adjust R, G and B gain and offset by following below rules to satisfy
spec requirement.
x
y
Red gain
↓
x
↓
-
Green gain
↓
-
y
↓
Blue gain
↓
x
↑
y
↑
Red offset
↑
x
↑
-
Green offset
↑
-
y
↑
Blue offset
↑
x
↓
y
↓