National Instruments IEEE 1394 Manual De Usuario
© National Instruments Corporation
G-1
Glossary
A
acquisition window
The image size specific to a video standard or camera resolution.
address
Value that identifies a specific location (or series of locations) in memory.
API
Application programming interface.
area
A rectangular portion of an acquisition window or frame that is controlled
and defined by software.
and defined by software.
array
Ordered, indexed set of data elements of the same type.
aspect ratio
The ratio of a picture or image’s width to its height.
asynchronous
(1) Independent in time from any other event. (2) Communication
mechanism on the IEEE 1394 bus, which guarantees delivery of the
message but does not guarantee timing.
mechanism on the IEEE 1394 bus, which guarantees delivery of the
message but does not guarantee timing.
B
big endian
Describes computers that store bytes of memory by placing the most
significant byte at the memory location with the lowest address, the next
significant byte at the next memory location, and so on.
significant byte at the memory location with the lowest address, the next
significant byte at the next memory location, and so on.
buffer
Temporary storage for acquired data.
C
camera session
A process-safe handle to a IEEE 1394 camera.
chroma
The color information in a video signal.
D
default setting
A default parameter value recorded in the driver. In many cases, the default
input of a control is a certain value (often 0).
input of a control is a certain value (often 0).