kac-9637 ETC-unknow, kac-9637 Datasheet - Page 14

• 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
5.3
The timing and control circuit can be programmed to sub-sam-
ple pixels in the display window vertically, horizontally or both,
with an aspect ratio of 4:2 as illustrated in figure 15
Note a:
Note b:
www.kodak.com/go/imagers 585-722-4385
Vertical
Horizontal
Both
Register
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
Bit
a b c d e f g h i j k l m n o p q r
a b c d e f g h i j k l m n o p q r
a b c d e f g h i j k l m n o p q r
4:2 Sub-Sampling
Read Out
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).
Figure 15. Example 4:2 Sub-sampling
c) Horizontal & Vertical Sub-sampling
a) Horizontal Sub-sampling
VIDCONFIG
Column/Horizontal
b) Vertical Sub-sampling
Column/Horizontal
1
1
1
Column/Horizontal
Color
1
0
1
VSCAN
VSub
(continued)
Not Read Out
0
1
1
HSCAN
HSub
14
5.4
The timing and control circuit can be programmed to average
neighboring pixels of the same color in the analog domain
before subsampling. This can be done 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 16. The value of the combined pixel is given by
Horizontal
Figure 16. :4:2Horizontal Subsampling with Averaging
4:2 Sub-Sampling with Averaging
Register
Bit
1
2
H
H
H
H
a
1
1
1
1
H
H
H
H
b
1
1
1
1
H
H
H
H
c
VIDCONFIG
2
2
2
2
1
H
H
H
H
H
Color
1
d
2
2
2
2
+ H
H
H
e
H
H
2
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1
1
1
1
H
H
H
H
f
1
1
1
1
VSCAN
0
VAvr
H
H
H
g
H
2
2
2
2
H
H
H
H
h
2
2
2
2
HSCAN
1
HAvr