e2v ELiiXA UC4, User Manual

Page: 48 / 62

ELiiXA® UC8/UC4
48
Eliixa_Color–revF 04/11
e2v semiconductors SAS 2011
ƒ
“ w ffcp 0 ”: Disabled the FFC
• FPN/DSNU Calibration
:
Launches the FFC process for the Offsets calculation . This command is available
in the CommCam “Flat Field Correction/Automatic Calibration ” section:
Ö
Read function : “ r calo ”: Returns the FPN Calculation Process Status (0 if finished, 1 if
processing)
Ö
Write function :
ƒ
“ w calo 1 ” : Launch the FPN Calibration Process.
ƒ
“ w calo 0 ”: Abort the FPN Calibration Process.
Some Warnings can be issued from the FPN Calibration Process as “pixel underflow” because some pixel
have been detected at “0” level. The Calculation result will be proposed anyway as it’s just a warning
message.
This will change the Status Register which is displayed in CommCam :
The warning messages possible are detailed in the Appendix 6 (Table 2, §6.2).
•
FPN coefficient Reset
:
Reset the FPN (Offsets) coefficient in Memory . This command is available in
the CommCam “Flat Field Correction / Manual Calibration ” section :
Ö
Write function : “ w rsto 0 ” : Reset (set to 0) the FPN coefficients in memory. This doesn’t
affect the FFC User Memory Bank but only the active coefficients in Memory.
•
PRNU Calibration
:
Launches the PRNU process for the Gains calculation . This command is available in
the CommCam “Flat Field Correction / Automatic Calibration ” section :
Ö
Read function : “ r calg ”: Returns the PRNU Calculation Process Status (0 if finished, 1 if
processing)
Ö
Write function :
ƒ
“ w calg 1 ”: Launch the PRNU Calibration Process.
ƒ
“ w calg 0 ”: Abort the PRNU Calibration Process.