Allied International V2.4.0 Manual Do Utilizador

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Description of the data path
 OSCAR Technical Manual V2.4.0
62
If the image capture is active (e.g. IsoEnable set in register 614h), the 
frames used by the camera for white balance are also output on the 1394 bus. 
Any previously active image capture is restarted after the completion of 
white balance.
Automatic white balance can also be enabled by using an external trigger. 
However, if there is a pause of >10 seconds between capturing individual 
frames, this process is aborted.
The following flow diagram illustrates the automatic white balance sequence.
Finally, the calculated correction values can be read from the 
WHITE_BALANCE register 80Ch.
 Figure 28: Auto white balance sequence
Pause image 
capture
Capture image 
via One_shot
Calculate and 
set correction 
values
Restart image 
capture if 
necessary
Repeat steps 
nine times