6.1.2 Spec and Default Settings
a) System Gamma definition is S-curve based on LGE PQ set and also is generated based on the color
temperature Cool, Medium and Warm (see below definition).
b) Spec of color temperatures (for RD development stage)
Color Temp. x y Tolerance
Cool 0.276 0.283 ±0.002
Medium 0.285 0.293 ±0.002
Warm 0.313 0.329 ±0.002
c) Default settings
- Component with NTSC signal
Color Temperature(NTSC) Cool Medium Warm
Red Gain 50.00 50.00 50.00
Green Gain 50.00 50.00 50.00
Blue Gain 50.00 50.00 50.00
Red Offset 50.00 50.00 50.00
Green Offset 50.00 50.00 50.00
Blue Offset 50.00 50.00 50.00
Note: RGB gain/offsets are in the range from 48 to 52 is suggested.
6.1.3 Color Temperature Alignment and Theorem
a) Measurement equipment and condition
- Equipment
Color Meter: Minolta CA210 or equivalent
Signal Generator: Astro VG859 or equivalent
- Condition
Measurement Point: Center of screen
Measurement Distance: 50mm
Measurement Angle: 90 degree
b) Adjustment method
First, correct signal level is a must. Front-end video digital level is calibrated and implemented as default in
software. Since analog signals are processed via ADC, we need to calibration three signals “AV-CVBS” “PC”
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