2 - 12
Index
Abbreviation/Term
Explanation
I
I/P/B
DVD recorders normally use data that is common between images, and
individually record different data for each image.
I-picture: Images recorded independently for the reference of commonly used
data.
P-picture: Images created from past I-picture or P-picture
B-picture: Images created from both I and P pictures, which interact between
both types
Since I-picture delivers the highest image quality, selecting I-picture is
recommended when adjusting image quality.
J
JPEG
Joint Photographic Expert Group: International standard format for compressing
still images.
M
MPEG
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.
MPEG Audio Layer
2
One of three audio compression standards (layers 1-3) defi ned by MPEG
MP3
MPEG1 Audio Layer-3: Audio data digital compression technology.
O
Optical digital audio
output
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 fi ber.
P
Pan & Scan/
Letterbox
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 fi t 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.
Playback Control
(PBC)
One format to play Video CD: User can select desired screens and data while
watching the displayed menu screen.
Progressive
playback function
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.
S
S-Video Output
The video signal is separated into chrominance (C) and luminance (L) signals
and transmitted to TV: This delivers clearer images.
Sampling
Frequency
Sampling slices audio waves (analog signal) at a specifi ed 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.
W
WMA
Windows Media Audio: Codec that was developed by Microsoft Corporation in
USA.
Num.
3D surround
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 specifi ed positions to both ears of listener
located in a specifi ed position, taking into account the shape of head and the
effect of earlobes, and the two transfer functions from any position to both ears.
General Description > List of Abbreviations and Terms for DVD Recorder
