參數(shù)資料
型號: LM9617CCEA
廠商: National Semiconductor Corporation
英文描述: Monochrome CMOS Image Sensor VGA 30 FPS
中文描述: 單色CMOS圖像傳感器顯卡30醫(yī)科
文件頁數(shù): 12/37頁
文件大?。?/td> 366K
代理商: LM9617CCEA
Confidential
12
www.national.com
Functional Description
(continued)
4.0
SUBSAMPLING MODES
4.1
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 2:1 as illustrated in Figure16
Column/Horizontal
2:1 Sub-Sampling
0
1
2
3
4
5
6
7
8
9
Column/Horizontal
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
0
1
2
3
4
5
6
7
8
9
b) Vertical Sub-Sampling
R
q r
a b c d e f g h i
j k l m n o p q r
0
1
2
3
4
5
6
7
8
Column/Horizontal
R
9
a) Horizontal Sub-Sampling
c) Horizontal & Vertical Sub-Sampling
Read Out
Not Read Out
R
Figure 16: 2:1 Horizontal and Vertical Sub-Sampling
4.2
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 Figure17.
Column/Horizontal
a b c d e f g h i j k l m n o p q r
0
1
2
3
4
5
6
7
8
9
4:2 Sub-Sampling
a) Horizontal Sub-sampling
Read Out
Not Read Out
R
a b c d e f g h i j k l m n o p q r
0
1
2
3
4
5
6
7
8
9
Column/Horizontal
R
a b c d e f g h i j k l m n o p q r
0
1
2
3
4
5
6
7
8
9
Column/Horizontal
R
c) Horizontal & Vertical Sub-sampling
b) Vertical Sub-sampling
Figure 17: 4:2 Horizontal and Vertical Sub-Sampling
L
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