Datasheet

PDF: 09005aef8202ec2e/Source: 09005aef8202ebf7 Micron Technology, Inc., reserves the right to change products or specifications without notice.
MT9D111__7_REV5.fm - Rev. B 2/06 EN
160 ©2004 Micron Technology, Inc. All rights reserved.
MT9D111 - 1/3.2-Inch 2-Megapixel SOC Digital Image Sensor
Start-Up and Usage
Micron Confidential and Proprietary
and are defined independently for each dimension. These can be expressed further as
(EQ 5)
(EQ 6)
In order to implement the function F (x, y) for each zone the MT9D111 provides a set of
registers that allow flexible definition of the function F (x, y). These registers contain the
following parameters:
• operation mode R128:2
• zone boundaries and center offset R129:2-R135:2
• initial conditions of
(EQ 7)
for each color (12-bit wide) R136:2-R141:2
• initial conditions of the first derivate of
(EQ 8)
for each color (12-bit wide) R142:2-R147:2
• second derivatives of
(EQ 9)
for each color and each zone (8-bit wide) R148:2-R171:2
• values for k(10-bit wide) and G(8-bit wide) in (2) for all colors and zones are specified
in R173:2 and R174:2. Sign for k is specified in R R128:2.
There are x2 factor that can be applied to the second derivatives inside each zone
(R172:2) if correction curvature in the particular zone is to be increased. There are also
global x2 factors for all zones in X and Y direction located in R128:2. The first derivative
(for both X and Y directions) can be divided by a number (devisor) specified in R128:2
before it is applied to the F function. Higher numbers result in more precise curve (full-
scale expanse).
Color Correction
Color correction in the color pipeline is achieved by
1. Apply digital gain to raw RGB, R106:110:1
2. Subtract second black level D from raw RGB, see R59:1
3. Multiply result by CCM, R96-102:1
φ xx
2
, ()= a
i
x
2
+ b
i
x + c
i
ϕ yy
2
, ()= d
i
y
2
+ e
i
y + f
i
φ xx
2
, () and ϕ yy
2
, ()
φ xx
2
, () and ϕ yy
2
, ()
φ xx
2
, () and ϕ yy
2
, ()