User manual

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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.
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.
Audio Video
Interleave (AVI)
Developed by Microsoft, a multimedia
container format Whic h contains both
audio as well as video data allowing
Simultaneous playback.
MPEG The Moving Picture Experts Group is a
working group that is responsible for
the development of video and encoding
standards.
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.
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.
Composite
Video
A picture signal combined with
synchronization and (possibly) color
information. It is a composite of three
source signals called Y, U and V (together
referred to as YUV).
OGG Vorbis An audio compression format that is
absolutely free, open
and unpatented.
DivX
®
Created by DivX Inc., a video codec that
is able to compress large video segments
into smaller sizes while maintaining a high
visual quality.
Phase Alternation
Line (PAL)
The analog (a 625-line / 50 Hz) television
system that is currently in use in Europe
and several countries in Asia.
Dolby ® Digital
or AC3
Audio compression technology developed
by dolby
®
laboratories. The technology
contains up to 6 channels 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.
Progressive
Scan
A method for displaying, storing or
transmitting moving images in which the
lines of each frame are drawn in sequence.
It subjectively increases vertical resolution
and reduces flickering.
Digital Rights
Management
(DRM)
echnology used by publishers to control
access to and usage of hardware and digital
data, such as software, music and movies.
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.
Digital Theater
Systems (DTS™)
A multi-channel digital surround sound
form at that is used for theatrical as well as
consumer grade applications.
DVD-Video
Object (VOB)
A file format that contain DVD-Video media.
It includes the video, audio, subtitle and the
menu contents in a streaming format.
Downmixing Downmixing allows playback device’ to
deliver a 5.1 channel signal to a mono
signal. This allows the traditional 2-CH
television to use a 5.1CH audio signal.
VBR Variable Bit Rate means that a bit stream
has a 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.
Broadcasting of television signals with
a significantly higher resolution than
traditional formats, such as PAL or NTSC,
would allow.
Windows Media
Audio (WMA)
A Microsoft product that is a compressed
audio format developed to compete with
the MP3 audio format.
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