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AR0141CS датащи(PDF) 35 Page - ON Semiconductor

номер детали AR0141CS
подробное описание детали  1/4-Inch Digital Image Sensor
PDF  64 Pages
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производитель  ONSEMI [ON Semiconductor]
домашняя страница  http://www.onsemi.com
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AR0141CS датащи(HTML) 35 Page - ON Semiconductor

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AR0141CS/D Rev. 6, 4/16 EN
35
©Semiconductor Components Industries, LLC, 2016.
AR0141CS: 1/4-Inch Digital Image Sensor
Changing Sensor Modes
Figure 31:
Example of Changing the Sensor from Context A to Context B
Compression
The AR0141CS can optionally compress 12-bit data to 10-bit using A-law compression.
The compression is applied after the data pedestal has been added to the data. See “Data
Pedestals” on page 19.
The A-law compression is disabled by default and can be enabled by setting R0x31D0
from “0” to “1” and 0x31AC needs to be set to 0x0C0A.
Table 16:
A-Law Compression Table for 12-10 bits
Input Range
Input Values
Compressed Codeword
11
10
9
8
7
6
5
4
3
2
1
0
9
8
7
6
5
4
3
2
1
0
0 to 127
0
0
0
0
0
a
b
c
d
e
f
g
0
0
0
a
b
c
d
e
f
g
128 to 255
0
0
0
0
1
a
b
c
d
e
f
g
0
0
1
a
b
c
d
e
f
g
256 to 511
0
0
0
1
a
b
c
d
e
f
g
X
0
1
0
a
b
c
d
e
f
g
512 to 1023
0
0
1
a
b
c
d
e
f
g
X
X
0
1
1
a
b
c
d
e
f
g
1024 to 2047
0
1
a
b
c
d
e
f
g
h
X
X
1
0
a
b
c
d
e
f
g
h
2048 to 4095
1
a
b
c
d
e
f
g
h
X
X
X
1
1
a
b
c
d
e
f
g
h
Active Rows
V ertical B lanking
Tim e
1/6 0s
1/6 0s
Start of Vertic al Blankin g
Start of Fram e
S ta rt o f A c tiv e R o w
End of Fram e
Serial SYNC Codes
End of Fram e
Readout
End of Fram e
Readout
End of Fram e
Readout
1/3 0s
1280 x 720
F ram e N+1
1 280 x 720
Fra m e N
H B (370 P ixels/C olum n)
H B (370 P ixels/C olum n)
1280 x 720
F ram e N+2
H B (370 P ixels/C olum n)
Write context A to B
during readout of Frame N
Integration time of context
B mode implemented
during readout of frame
N+1
Context B mode is
implemented in frame N+2



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