Description of the data path
STINGRAY Technical Manual
V2.2.0
141
HoldImg mode
By setting the
HoldImg
flag, transport of the image over the 1394 bus is
stopped completely. All captured images are stored in the internal
ImageFiFo
. The camera reports the maximum possible number of images in
the
FiFoSize
variable.
Note
L
Configuration
To configure this feature in an advanced register: See
Table
127: Advanced register: Deferred image transport
on page
270.
Note
L
•
Pay attention to the maximum number of images that
can be stored in
FIFO
. If you capture more images than
the number in
FIFOSize
, the oldest images are over-
written.
•
The extra
SendImage
flag is set to
true
to import the
images from the camera. The camera sends the number
of images set in the
NumOfImages
parameter.
•
If
NumOfImages
is
0,
all images stored in FIFO will be
sent.
•
If
NumOfImages
is not
0
, the corresponding number of
images will be sent.
•
If the
HoldImg
field is set to
false
, all images in
ImageFIFO
will be deleted. No images will be sent.
•
The last image in the FIFO will be corrupted, when
simultaneously used as input buffer while being read
out. In this case read out one image less than max.
buffer size.
•
NumOfImages
is incremented after an image was read
out of the sensor and therefore stored into the onboard
image FIFO.
•
NumOfImages
is decremented after the last isochro-
nous packet of an image was handed over to the
IEEE1394 chipset of the camera.