Sharp LC-24LE150M - White Balance Calibration Calculations

LC-24LE150M
6 – 4
(19) Set the G of point Max. to the default value
(4080 x G value of point 2 / R2). Set the R,B
Max. value [G
max
– G value of point 2 + (R,B
value of point 2)
(20) Calculate the slope R2
slope,
G2
slope,
B2
slope
between MAX and Point2. R2
slope =
(R
max
-R
high
)/(4080-3664)
(21) Calculate the correction value پR
high,
پG
high,
پB
high.
R
high =
R2
slope X
(3840-3664)
(22)
Set the reference value R,G,B of point 2
(R2’)=R2+پR
high
(23) Calculate the slope R1
slope,
G1
slope,
B1
slope
between Point2 and Point1. R1
slope =
(R
high
-R
low
)/(3664-816)
(24) Calculate the correction value پR
low,
پG
low,
پB
low.
R
low =
R1
slope X
(915-816)
(25) Set the reference value R,G,B of point 1
(R1’)=R1+پR
low
(26) Shut down the AC power.
䯲
Initial value at RGB 2 point : 3664
䯲
Initial value at RGB 1 point : 816
[Adjustment value]
侀
Teaching set send by engineering dept is set as
reference.
[Reference values for adjustment reference]
Equipment : Luminance meter [Minolta CA-210]
Level
Spec
Data
Adjustment
Spec.
Inspection
Spec.
Point
2 ref.
values
229
x=0.272
y=0.277
0.0010 0.0020
Point
1 ref.
values
51
x=0.272
y=0.277
0.0045 0.0090
Ref. : For inspection, set the LCD TV as below.
AV MODE : [DYNAMIC] (Reset)
Aging Time : Minimum 5 minutes