kac-9637 ETC-unknow, kac-9637 Datasheet - Page 13

• Manufacturer Part Number: kac-9637
• Description: Cmos Image Sensor 648 H X 488 V Vga 68 Fps Monochrome Cis
• Manufacturer: ETC-unknow

IMAGE SENSOR SOLUTIONS
Functional Description
5.0
5.1
The timing and control circuit can be programmed to sub-sam-
ple pixels in the “Active Window” vertically, horizontally or both,
with an aspect ratio of 2:1 as illustrated in figure 13.
Note a:
Note b:
www.kodak.com/go/imagers 585-722-4385
Vertical
Horizontal
Both
Register
Bit
9
SUB-SAMPLING MODES
2:1 Sub-Sampling
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
0
1
2
3
4
5
6
7
8
9
a b c d e f g h i j k l m n o p
Note that the pixel read out will depend on the pro-
grammed scan order as described in section 4.0.
For max FPN performance it is recommended to
always switch on the averaging feature when sub-
sampling (see next section).
a b c d e f g h i j k l l n o p q r
a b c d e f g h i j k l m n o p q r
Figure 13. Example of 2:1 Sub-sampling
Read Out
c) Horizontal & Vertical Sub-Sampling
VIDCONFIG
0
0
0
a) Horizontal Sub-Sampling
Color
Column/Horizontal
b) Vertical Sub-Sampling
Column/Horizontal
Column/Horizontal
1
0
1
VSCAN
VSub
(continued)
Not Read Out
0
1
1
HSCAN
HSub
q r
13
5.2
The timing and control circuit can be programmed to average
neighboring pixels in the analog domain before sub-sampling in
the horizontal direction only as shown in the table below
When horizontal 2:1 subsampling with averaging is selected,
neighboring pixels in the horizontal direction are combined as
shown in figure 14. The value of the combined pixel is given by
Horizontal
Figure 14. :2:1Horizontal Subsampling with Averaging
1
2:1 Sub-Sampling with Averaging
2
Register
Bit
H
H
H
H
a
1
1
1
1
H
H
H
H
b
2
2
2
2
H
H
H
H
c
1
1
1
1
H
H
H
H
d
VIDCONFIG
2
2
2
2
0
H
Color
H
H
H
H
1
e
1
1
1
1
+ H
H
H
H
H
f
2
2
2
2
2
Email:[e-mail]
g
H
H
H
H
1
1
1
1
VSCAN
0
VAvr
H
H
H
H
h
2
2
2
2
H
H
H
i
H
1
1
1
1
H
H
H
H
HSCAN
j
2
2
2
1
2
HAvr