B
background image -
The part of a display
image, such as a form overlay, that is not changed during a particular sequence
of transactions. Contrast with foreground image.
background
music -
In videotaping, music that accompanies
dialog or action.
balance -
For
audio, refers to the relative strength of the left and right channels. A
balance level of 0 is left channel only. A balance level of 100 is right
channel only.
basic input/output system (BIOS)
-
In an IBM personal computer, microcode that
controls basic hardware operations, such as interactions with diskette drives,
hard disk drives, and the keyboard. (For example, the IBM Enhanced Graphics
Adapter has an addressable BIOS, located on the adapter itself, that is
used to control the IBM InfoWindow* graphics functions.)
beta
format -
A consumer and industrial 0.5-inch
tape format.
BG -
Script
abbreviation for background.
BIOS
-
Basic input/output system.
bitmap
-
A coded representation in which each bit,
or group of bits, represents or corresponds to an item, for example, a configuration
of bits in main storage in which each bit indicates whether a peripheral
device or a storage block is available or in which each group of bits corresponds
to one pel of a display image.
bit-block transfer
-
Transfer of a rectangular array of bitmap
data.
bitblt -
Bit-block
transfer. Synonym for blit.
bitmap graphics
-
A form of graphics whereby all points on the
display are directly addressable. See also all points addressable.
blit -
blitter -
Hardware
that performs bit-block transfer operations.
BND
-
(1) An internal I/O procedure, provided by
the MMPM/2 system, that supports RIFF compound files (commonly called bundle
files). (2) The four-character code (FOURCC) of a bundle file.
(3) See also RIFF compound file.
BND file
-
BND
IOProc -
An internal I/O procedure, provided
by the MMPM/2 system, that supports the elements in a RIFF compound file.
See also CF IOProc.
boom -
A
long, relatively horizontal supporting brace used for holding a microphone
or camera; sometimes used to refer to the machinery that supports the camera
and allows it to move while shooting.
brightness
-
Refers to the level of luminosity of the video
signal. A brightness level of 0 produces a maximally white signal. A brightness
level of 100 produces a maximally black signal.
buffer
-
A portion of storage used to hold input or
output data temporarily.
bundle file (BND)
-
(1) A file that contains many individual files,
called file elements, bound together. The MMIO file manager provides
services to locate, query, and access file elements in a bundle file. (2)
A RIFF compound file.
bus -
A
facility for transferring data between several devices located between two
end points, only one device being able to transmit at a given moment.
buy
-
(1) In videotaping, footage that is judged
acceptable for use in the final video. (2) Synonym for keeper.
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