Frame memory and deferred image transport, Deferred image transport, Ls in – ALLIED Vision Technologies Stingray F-504 User Manual
Page 171: Table 54: fifo memory size
Description of the data path
STINGRAY Technical Manual V4.4.4
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Frame memory and deferred image transport
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.
Deferred image transport
As all Stingray cameras are equipped with built-in image memory, this order
of events can be paused or delayed by using the deferred image transport
feature.
Stingray cameras are equipped with 32 MByte of RAM (Stingray F-504:
64 MByte). The table below shows how many frames can be stored by each
model. The memory operates according to the FIFO (first in, first out) prin-
ciple. This makes addressing for individual images unnecessary.
Deferred image transport is especially useful for multi-camera applications:
Assuming several cameras acquire images concurrently. These are stored in
the built-in image memory of every camera. Until this memory is full, the lim-
iting factor of available bus bandwidth, DMA- or ISO-channel is overcome.
Model
Memory size
Stingray F-033B/C
Stingray F-033B/C fiber
32 MB memory: 50 frames
Stingray F-046B/C
Stingray F-046B/C fiber
32 MB memory: 35 frames
Stingray F-080B/C
Stingray F-080B/C fiber
32 MB memory: 19 frames
Stingray F-125B/C
Stingray F-125B/C fiber
32 MB memory: 12 frames
Stingray F-145B/C
Stingray F-145B/C fiber
32 MB memory: 10 frames
Stingray F-146B/C
Stingray F-146B/C fiber
32 MB memory: 10 frames
Stingray F-201B/C
Stingray F-201B/C fiber
32 MB memory:
7 frames
Stingray F-504B/C
Stingray F-504B/C fiber
64 MB memory:
5 frames
Table 54: FIFO memory size