Allied Vision Technologies F-131B, Technical Manual, Page: 101 / 183

Controlling image capture
9.8 Frame memory and deferred image transport
using the deferred image transport feature.
eras a ped with 8 MB . The table be hows h es can be
iFo (Fir First o
in nneces
An image is normally captured and transported in consecutive steps. The image is taken, read out
from the sensor, digitized and sent over the 1394 bus.
As all Marlin cameras are equipped with built in image memory, this order of events can be
aused or delayed by p
Marlin cam
stored by each model. The memory is arranged in
re equip of RAM low s
st in
ow many fram
ut) manner. T a F
sary.
his makes
addressing for dividual images u
Model Memory Size
MF-033 frames 17
MF-046 13 frames
MF-080 7 frames
MF-131 4 frames
MF-145 frames 3
Table ize
Deferred image transport is especially useful for multi camera applications where a multitude of
cameras grab a certain number of images without having to take available bus bandwidth, DMA-
er is controlled from the host computer by
read ed er of i ty is
controlled by the following register:
50: FiFo memory s
and ISO-channels into account. Image transf
addressing individual cameras and
ing out the desir numb mages. Functionali
Register Name Field Bit Description
0xF1000260 DEFERRED_TRANS Presence_Inq [0] Indicates presence of this
ture read only) fea (
--- [1..4]
SendImage [5] Send N
(auto reset) umOfImages now
Enable/Disable deferred
transport mode
HoldImg [6]
FastCapture [7] Enable/disable fast capture
mode
--- [8..15]
FiFoSize [16..23] Size of FiFo in number of
images (read only)
NumOfImages [24..31] W: Number of images to send
R: Number of images in
buffer
Table 51: Deferred mode configuration register
MARLIN Technical Manual
Page 101