DANE-ELEC SO SMART User Manual page 53

Glossary
Aspect Ratio Used to describe the distribution of pixels in a digital
image. Increasing the aspect ratio of an image lowers
the efficiency of the use of the pixels. The resulting
image will have less detail than an image with the
same amount of pixels, but with a lower aspect ratio.
Developed by Microsoft, a multimedia container format
Audio Video
which contains both audio as well as video data allowing
Interleave (AVI)
Simultaneous playback.
Bandwidth The range of signal frequencies that a piece of audio or
video equipment can encode or decode; the difference
between the limiting frequencies of a continuous
frequency band. Video uses higher frequency that audio,
thus requires a wider bandwidth
Composite A picture signal combined with synchronization and
(possibly) color information. It is a composite of three
Video
source signals called Y, U and V (together referred to as
YUV).
Created by DivX Inc., a video codec that is able to
DivX®
compress large video segments into smaller sizes while
maintaining a high visual quality.
Audio compression technology developed by dolby ®
dolby ® Digital
laboratories. The technology contains up to 6 channels
or AC3
of sound, five channels for normal range speakers,
which include Right front, Center, Left Front, Right
Rear and Left Rear, as well as one channel for the
subwoofer. Mono and Stereo usages are also supported
by this format.
Technology used by publishers to control access to and
Digital Rights
usage of hardware and digital data, such as software,
Management
music and movies.
(DRM)
Digital Theater A multi-channel digital surround sound form at that is
used for theatrical as well as consumer grade
Systems (DTS™)
applications.
Downmixing allows playback device' to deliver a 5.1
Downmixing
channel signal to a mono signal. This allows the
traditional 2-CH television to use a 5.1CH audio signal.
Broadcasting of television signals with a significantly
Hi-Definition
higher resolution than traditional formats, such as PAL or
(HDTV)
NTSC, would allow.
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MP3 Also known as MPEG-1 Audio Layer 3. A popular digital
audio format that was designed to reduce the amount of
data required to represent audio, without compromising
the audio quality.
The Moving Picture Experts Group is a working group that
MPEG
is responsible for the development of video and encoding
standards.
NTSC Adopted by the National Television Systems Committee,
the analog television system that is currently in use in
Canada, Japan, South Korea, the United States and some
other countries, mostly in the Americas.
OGG Vorbis An audio compression format that is absolutely free, open
and unpatented
The analog (a 625-line / 50 Hz) television system that is
Phase
currently in use in Europe and several countries in Asia.
Alternation Line
(PAL)
A method for displaying, storing or transmitting moving
Progressive
images in which the lines of each frame are drawn in
Scan
sequence. It subjectively increases vertical resolution and
reduces flickering.
S-Video Separate video is an analog video signal that carries the
video data as two separate signals. S-Video works in
480i or 576i resolution.
DVD-Video A file format that contain DVD-Video media. It includes
the video, audio, subtitle and the menu contents in a
Object (VOB)
streaming format.
Variable Bit Rate means that a bit stream has a
VBR
changing number of bits per second. Simple scenes can
be assigned a low bit rate, with complex scenes using a
higher bit rate. This enables maintaining the consistency
across audio and video quality with optimal file size.
A Microsoft product that is a compressed audio format
Windows Media
developed to compete with the MP3 audio format.
Audio (WMA)
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