BOBCAT Hardware User’s Manual
Imperx, Inc.
Rev. 1.0
6421 Congress Ave.
5/4/2010
Boca Raton, FL 33487
+1 (561) 989-0006
90 of 212
2.9.2 Digital Data Shift
The “Digital Shift” feature allows the user to change the group of bits sent to the
camera output and therefore manipulate the camera brightness. The user can
implement up to 7 bits left or right digital shift. The internal camera processing of
the data is 14 bits. If the camera is set to output 10 bits of data then the four least
significant bits are truncated. In some cases the user may need to convert from 14 to
10 bit by preserving the 4 least significant bits and truncating the 4 most significant
ones – Figure 2.22. Please note that the camera signal-to-noise ratio will be reduced
using the data shift option.
Standard 10 bit Output Data
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
Camera Data - 14 bit
0
0
Modified 10 bit Output Data - (10 bit data + 4 bits shifted right)
D12
D13
0
0
0
0
0
0
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
Figure 2.22 – Output data using 4 bits digital right shift
2.9.3 Output Format
BOBCAT camera series supports several out formats, which are based primarily on
the CCD imager used in the camera, and the number of outputs available. For more
information, please refer to Table 2.1.
A.
Single Output Cameras
For the single output cameras (B0610, B1410 and B1610) the user has several
options based on the CDD imager used. For the camera with monochrome imager
the user has only one option – 1 Tap Sequential. If the camera has a color imager
user can select the raw Bayer data output (1 Tap Sequential) or the interpolated
color – 3 Tap RGB.
-
“
1 Tap Sequential
” – In this mode all pixels (for every line) are sent to one
output (Tap 1) in a sequence, starting with the first and ending with the last (L)
pixel (1, 2, 3, … L-1, L) – Figure 2.23. Each pixel can be 8, 10, 12 or 14 bit
deep.
