JAI CB-141MCL - Manual (Page 17)

CM-141MCL/PMCL/RA / CB-141MCL/PMCL/-RA
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6.1.2 CB-141MCL Bayer mosaic filter
CB-141MCL is a color camera based on a CCD sensor
with a Bayer RGB color mosaic.
The color image reconstruction is done in the host PC.
The color sequence in the video signal is the same for
all scanning formats.
The line readout follows LVAL.
The first valid pixel is the same timing as DVAL.
The Bayer color sequence starts with:

RGR for odd line numbers.
When the variable partial scan is used and an even
line is selected as the start line, color sequence is;

GBG for even line numbers.
Figure 12 shows the timing sequence for the Bayer mosaic read-out for the available partial
scan modes.
6.1.3 Partial Scanning (fixed rate and variable)
The partial scanning function uses the middle of the image vertically to achieve faster frame
rates. This is very useful when capturing and inspecting an image which does not require full
height. CM-141MCL/CB-141MCL has 4 types of partial scan modes such as 2/3, 1/2, 1/4 an 1/8.
Fig.13. Fixed partial scan
In addition to the fixed rate partial scan modes, CM/CB-141MCL has a variable partial scan
mode. The start line can be set from the 1st line to the 1024th line and the scanned lines can
be set from 8 lines to 1032 lines. Please note that if an odd line is selected as the start line,
the Bayer color sequence is RGR and if an even line is selected, it is GBG.
Mode Start line End line Frame Rate
Fast Dump
Fast Dump
Normal Scan
2/3
1/2
1/4
1/8
173
261
391
455
866
780
650
584
41.05 fps
50.06 fps
74.57 fps
98.73 fps
FVAL Timing
LVAL
DVAL
1
55
81
94
37
8
Full
2/3 Partial
1/2 Partial
1/4 Partial
1/8 Partial
1
Line # from FVAL triming
G B
R G
R
G B
R G
G
R
G B
R G
G
R
Actual V Line #
1
173
261
391
455
G B
R G
G
R
G B
R G
G
R
G B
R G
G
R
Fig.12. Bayer layout for each scanning