BOBCAT HD-SDI
Hardware User’s Manual
Imperx, Inc.
Rev. 1.4
6421 Congress Ave.
6/2/2014
Boca Raton, FL 33487
+1 (561) 989-0006
43 of 175
B.
Processing AOI (PAOI)
All AOIs are functionally equal except PAOI. PAOI can be enabled as LUT or
image processing Region of Interest (ROI). When enabled as LUT ROI, the
LUT function will apply only to the selected ROI, all data outside of the region
will not be processed with the LUT function. When enabled as processing ROI,
the selected processing function will apply only to the selected ROI, all data
outside of the region will not be processed with the selected function – Figure
2.4.
Figure 2.4 – PAOI enabled as processing ROI.
(All data within the selected ROI are processed with “One Point Correction”, all data outside
of the ROI are not processed)
2.4.
EXPOSURE CONTROL
2.4.1.
Internal Exposure Control - Electronic Shutter
During normal camera operation, the exposure time is fixed and determined by
the readout (frame) time. The electronic shutter can be used to precisely control
the image exposure time under bright light conditions. The electronic shutter
does not affect the frame rate; it only reduces the amount of electrons
collected. Positioning a short pulse “SHUTTER”, with respect to the vertical
transfer pulse, VCCD – Figure 2.5, sets the exposure time. The electronic
shutter pulse can be positioned within the entire frame period with a precision
of 1.0us. The maximum exposure is frame time dependent and the minimum
exposure is ~ 2 microseconds (camera dependent).
