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Construction of Gamma Adjustment System
This is an example of gamma adjustment system. User can
create adjustment system by PC Software for Color
Analyzer CA-SDK which comes as standard accessory.
Software controls CA-210 and pattern generator to obtain
color and chromaticity data with each out put level. After
calculating correction factor of gamma curve, software will
write the look up table of coefficient to monitor firmware.
The white balance adjustment system can be constructed
by a similar method.
Gamma Adjustment System
Display Unit
Pattern
Signal
Writing gain
and cutoff level
Input of
Pattern
test pattern
Generator
luminance
PC Software for Color Analyzer
CA-SDK (Standard accessory)
Standard accessory SDK helps create software easily
according to needs.
Sample software is bundled; you can start data collection
easily.
Example of White Balance Adjustment Software made by SDK
Required system
OS : Windows
®
98,2000,ME,XP
®
®
Windows
and Excel
are a trademark of Microsoft Corporation in the USA and
other countries.
CA-210
POWER
CH01 EXT Fa P1
∆x
x
[EXT D-1.50]
ON
y
∆y
PQRS
OFF
∆Lv
v
GHI
White
0
MEMORY CH
-CAL
MODE
REMOTE
HOLD
MR
Red
Data from
Command
CA-210
to CA-210
(x64 Edition not supported)
User's own matrix correction factor is set to the memory
channels by measuring three monochrome colors (R, G, B
and W) of known values and setting the obtained calibration
values (xyLv) and emission characteristic to the instrument.
Once this factor is set,a the measured values will be
displayed after correction by this factor and output each
time measurement is taken.
Performing matrix calibration enables high-accuracy
measurements of displays that provide colors through
additive color mixing of three monochrome colors (R, G and B).
Since the matrix correction factor obtained from Minolta's
calibration standard has been set, measured values
calculated based on this factor will be acquired when this
instrument is used for the first time since shipment from the
factory.
TUV
WXYZ
7
8
9
MENU
JKL
MNO
LOCK
4
5
6
ALPHA
ABC
DEF
- SPACE
1
2
3
CAL
Green
Blue
0
.
ENTER
Software made
with SDK
Sample software (Standard)
Cal
CA-210 can be corrected in the matrix calibration method using
Konica Minolta's spectroradiometer CS-1000A.
Color
The measurement data of CA-210 can be acquired into the PC.
Drift tests, LCD stability test and so on can be performed easily.
The acquired data can be read with Excel ® or other spreadsheet
software.
Contrast
Multi-point measurement (5, 9, or 25 points) can be made for
white uniformity and contrast measurement.
Gamma
R, G, B, and W gamma measurements for gradations of 16, 32,
64, 128, and 256 steps.
Matrix Calibration
Sample software Gamma
Sample software Color
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