Configuration MC130x
Users Manual Rev. 2.1
ImageBLITZ defines one specific line or a part of the 1024 lines as
trigger window. This is true even if the selected image size is less
1024 lines or outside of the selected image area.
After activation of ImageBLITZ and after issuing the EXP signal as
an enable signal, the MC1300 hardware checks the grey values in
the trigger window at a repetition rate that is defined by the expo-
sure time selected with bits 3..0 of r6.
If a selectable number of pixels along that trigger window exceed
or fall short of a selectable threshold, one single image is exposed
and output.
To adjust ImageBLITZ®, the trigger line can be superimposed to
the image. Within the selected line, 10 pixel are displayed as a dot-
ted black- and white line as long as the selected threshold is not
passed.
ImageBLITZ is configured with the registers r8..rC
h
:
6.15.1 ImageBLITZ® processing
When ImageBLITZ® is activated and an active transition of the
EXP input has once occurred, the following cycle is repeated:
1. MC130x Hardware checks at a repetition rate defined by
the inverse of exposure time (:r6[3..0]), the intensity of a
group of 10 pixel along the selected trigger window are
compared against an adjustable threshold (:rA
h
[7..0],
Range: 255..0).
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