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Chapter 2
Acquisition Operations
Video Format
60 Hz
50 Hz
26
The DT3120 board can acquire interlaced frames or individual fields
either synchronously or asynchronously, and store them in system
memory. In a synchronous acquisition, you cannot perform another
operation until the synchronous acquisition completes. In an
asynchronous acquisition, the operation starts but gives control to
you immediately, allowing you to perform other operations while
data is acquired.
Using the DT3120, you can acquire a single full frame, a single field
(subframe), multiple full frames, or multiple fields. Data is stored to
an area in system memory that is allocated by the DT3120 Device
Driver (called device memory).
used for each image format and image type supported.
Table 2: Memory Used
Storage Image
Format
RGB or RGB24
RGB16 or YUYV422
MONO
RGB or RGB24
RGB16 or YUYV422
MONO
Table 2
lists the memory size that is
Maximum Memory Used
(Bytes)
1,228,800
614,400
307,200
1,769,472
884,736
442,368
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