CameraLink Area Scan Camera
·
User Manual
17
Chapter 4 Camera Feature
4.1 Global Shutter
The camera mentioned in this user manual is a global shutter camera. For camera that supports
global shutter, its exposure starts and ends in each line simultaneously. After the exposure, data
readout starts line by line. All pixels expose at the same time, then readout at different time, as
shown below.
Line 1
Line 2
Line 3
Line 4
Line 5
Line n
Line n-1
Readout
Readout
Exposure
Figure 4-1
Global Shutter
4.2 Overlap Exposure
The process that camera captures one frame of image includes two stages, exposure and readout.
According to the overlap relation between the exposure time and the readout time, cameras with
different sensors can be divided into overlap exposure and non-overlap exposure. The camera
mentioned in this user manual uses overlap exposure to process image data.
Overlap exposure refers to the overlap between the current frame exposure and the previous
frame readout. In other words, when the previous frame starts to read out, the current frame
starts to expose simultaneously, as shown below.
Overlap Exposure under Internal Trigger Mode
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