- SS-HQ1 Application Notes -
Ver.1.0.0 January 7, 2005
127
10.7.2. WB Operation
The modes shown in “WB Modes” can be selected by switching AWBMODE(CAT15_Byte1_bit0-3).
Table 10.7-1 WB Modes
MODE
AWB1
AWB2
AWB3
AWBMODE
ATW 0
0
0
0
Manual White Balance
0
0
1
4
Push 0
1
0
2
Hold 0
1
1
6
User fixed value 1
1
0
0
1
User fixed value 2
1
0
1
5
User fixed value 3
1
1
0
3
User fixed value 4
1
1
1
7
ATW
ATW is the Auto Trace White balance mode.
ATW is a feedforward system that automatically aligns the white balance by detecting the R,G and B before
WB amplifire.
Please be sure to carry out pre white balance adjustment before using ATW. See "Pre-WB adjustment mode"
under "11. Description of Operation of Each Mode" for the pre white balance adjustment method.
Push
Push mode has no operation frame or other limitations, and performs correction so that the R:G:B evaluation
value is always 1:1:1.
In addition, the convergence speed can be adjusted by ALLSTEP (CAT15_Byte 32_bit 0-7). Reducing this
parameter value increases the convergence speed.
Note that luminance specific integration is not performed in this mode.
Table 10.7-2 Push Related Parameters
Parameter
Description
Settings range
ALLSTEP(CAT15_Byte32_bit0-7)
Push convergence speed
adjustment parameter
0[h]:Maximum speed
FF[h]:Minimum speed