pciGrabber-4x4
104
PHYTEC Messtechnik GmbH 2008 L-720e_0
De-/Activation of the Interlaced Mode
void Set_Interlace(WORD nDevNo, WORD nInterlace);
nInterlace:
0 = Non-Interlace
1 = Interlace
2 = Field Aligned
This function indicates to the Grabber, that the incoming videosignal
is an interlaced or none interlaced signal. This will influence the
vertical scaling filter. For a whole frame the option
Interlace
and for a
field the option
Non-Interlace
should be selected in order to reduce
artefacts from the motion.
When displaying only half frames, a 20 ms recess usually occurs
between the two digitization events. This is because the other half
frame cannot be displayed due to the half frame rastering delay. In the
Field Aligned
mode, the second half frame is internally moved over by
a half row, so that the frame can fit onto the first field. This method
allows a field to be returned in a 20 ms rhythm.
Because the half frame is altered during the electronic filtering, this
function is only suitable in a range limited for measuring and
automation tasks.
