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General Description > List of Abbreviations and Terms for DVD Recorder
Index
Abbreviation/Term
J
JPEG
M
MPEG
MPEG Audio Layer
2
MP3
O
Optical digital
audio output
P
Pan & Scan/
Letterbox
Playback Control
(PBC)
Progressive
playback function
S
S-Video Output
Sampling
Frequency
SDMI
T
Tracking
V
Virtual surround
W
WMA
Joint Photographic Expert Group: International standard format for
compressing still images.
Moving Picture Experts Group: Standard related to compression of digital video
and audio. MPEG2 is a higher standard of MPEG and is applied to video (movie)
requiring higher quality.
One of three audio compression standards (layers 1-3) defined by MPEG
MPEG1 Audio Layer-3: Audio data digital compression technology.
Audio is usually converted to an electrical signal and transmitted from DVD to a
device such as amp: When audio is converted to a digital signal, this optical
digital audio output can be transmitted on optical fiber.
Most DVD videos are produced assuming that they will be displayed on wide TV
screen (aspect ratio of 16:9): If they are displayed on TV screens with 4:3 aspect
ratio, 16:9 images will not quite fit on 4:3 screens. There are two ways of
displaying 16:9 images on 4:3 TV:
· Pan & Scan: Cuts out the left and right ends of images and displays them on
whole screen.
· Letterbox: Reproduces 16:9 images on 4:3 screens with black bands across the
top and bottom of screen.
One format to play Video CD: User can select desired screens and data while
watching the displayed menu screen.
This function converts interlaced images to non-interlaced images and displays
them. It can play back 24-frame/second images included in DVD movie software,
etc.
The video signal is separated into chrominance (C) and luminance (L) signals
and transmitted to TV: This delivers clearer images.
Sampling slices audio waves (analog signal) at a specified time interval, and
digitizes the levels of the sliced waves. The slicing number per second is referred
to as the sampling frequency: The higher the number, the closer the sound to
the original.
Secure Digital Music Initiative: This conference was established by hardware
makers, the Recording Industry Association of America (RIAA) and music
industry companies, to protect copyrights of musical compositions.
To make adjustment for clearer playback image, by reducing noise that appears
on screen during videotape playback.
This technology localizes sound at any position using only two front speakers, by
subjecting the L and R signals to matrix operation. It uses the four transfer
functions from L/R speakers located at specified positions to both ears of listener
located in a specified position, taking into account the shape of head and the
effect of earlobes, and the two transfer functions from any position to both ears.
Windows Media Audio: Codec that was developed by Microsoft Corporation in
USA.
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Explanation
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