Matrox DigiSuite LX MAX, Руководство пользователя и инструкция по установке

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Appendix B, DigiSuite Glossary
filled key
A key effect in which the key source
image is different from the foreground image.
Areas not keyed (that is, not made transparent) in
the key source image are filled with the
corresponding areas of the foreground image.
Contrast with self-key.
FireWire Apple computer’s original
implementation of the technology that would be
standardized as IEEE-1394 in 1995.
Flex 3D A fully programmable architecture that
applies 3D texture mapping to video using a
Matrox 3D graphics accelerator chip and graphics
memory.
See also texture mapping.
frame A single video image. An interlaced
video frame is comprised of two consecutive fields
(the odd and even fields).
G
graphics overlay Text or a graphics image
that’s superimposed on video.
genlock
The process of synchronizing the
timing between different video signals by
generating a new video signal that is time-locked
to the sync of the original signals. Genlock devices
enable computer text and graphics to be
superimposed onto video.
See also blackburst.
GOP Group of Pictures. The sequence of I, B,
and P-frames produced during MPEG or MPEG-2
IBP compression. This sequence of frames
contains all of the information required to
reproduce a complete video segment. The longer
the GOP, the less editable it is.
GPI
General Purpose Interface. An interface that
controls an external device through a remote data
signal.
See also GPI trigger.
GPI trigger
The signal sent by a GPI that
instructs an external device to execute a particular
command, such as to start or stop playback of a
video effect.
H
hard key A key effect in which areas of the
keyed image are either completely transparent or
completely opaque, creating a hard edge between
the keyed image and background image.
See also
soft key.
host bus
Computer system bus to which a
DigiSuite card is connected by insertion in the
appropriate slot. This will be either a PCI, an
EISA, or an ISA bus.
hue The tint or tone of a color. For example, the
difference between the color green and red is its
hue.
I
IBP compression
See MPEG-2 IBP.
IEEE-1394 An international standard data
transfer protocol created by Apple Computer
under the FireWire trademark and standardized by
the Institute of Electrical and Electronics
Engineers (IEEE). It enables simple, low-cost,
realtime data transfer between computers and
consumer and prosumer electronics products, such
as DV camcorders and DV decks. Commonly
referred to as 1394.
I-frame compression See MPEG-2 I-frame.
I-frame (Intra-frame)
A frame created during
the MPEG or MPEG-2 compression process that
contains all the information required to reproduce
a complete image. It allows random access points
within a video stream, and acts as a reference point
for B-frames and P-frames to be built. I-frames are
editable because they contain enough data to
construct an entire video frame, unlike B-frames
or P-frames.
See also MPEG-2 IBP, B-frame (Bi-
directional frame), and P-frame (Predicted frame).
insert editing
Recording new video and/or
audio material onto a prerecorded (or striped) tape.
Insert edits can be made in any order, unlike
assemble edits, which must be made sequentially.