Glossary - Panasonic SC-PM91D Operating Instructions Manual

Glossary

Decoder
A decoder restores the coded audio signals on DVDs to normal. This is
called decoding.
Dolby Digital
This is a method of coding digital signals developed by Dolby
Laboratories. Apart from stereo (2-channel) audio, these signals can
also be multi-channel audio. A large amount of audio information can be
recorded on one disc using this method.
DTS (Digital Theater Systems)
This surround system is used in many movie theaters around the world.
There is good separation between the channels, so realistic sound
effects are possible.
Dynamic range
Dynamic range is the difference between the lowest level of sound that
can be heard above the noise of the equipment and the highest level of
sound before distortion occurs.
Film and video
DVD-Videos are recorded using either film or video. Usually, film is
recorded at 24 frames per second, the rate movies are filmed at, while
video is recorded at 30 frames per second.
Frame still and field still
Frames are the still pictures that go together to make a moving picture.
There are about 30 frames shown each second.
One frame is made up of two fields. A regular television shows these
fields one after the other to create frames.
A still is shown when you pause a moving picture. A frame still is made
up of two alternating fields, so the picture may appear blurred, but overall
quality is high.
A field still is not blurred, but it has only half the information of a frame
still so picture quality is lower.
Interlace and progressive output
NTSC, the video signal standard, has 480 interlaced (I) scan lines,
whereas progressive scanning uses twice the number of scan lines. This
is called 480P. The video signals output from this unit's COMPONENT
VIDEO OUT terminals (Y, P , P
B
pictures than if the signals were output from the VIDEO OUT terminal or
S-VIDEO OUT terminal.
I/P/B
MPEG 2, the video compression standard adapted for use with DVD-
Video, codes frames using these 3 picture types.
I: Intra coded picture
This picture has the best quality and is the best to use when adjusting
the picture.
P: Predictive coded picture
This picture is calculated based on past I or P-pictures.
B: Bidirectionally-predictive coded picture
This picture is calculated by comparing past and future I and
P-pictures so it has the lowest volume of information.
Linear PCM (pulse code modulation)
These are uncompressed digital signals, similar to those found on CDs.
Playback control (PBC)
If a Video CD has playback control, you can select scenes and
information with menus.
) allow you to enjoy higher quality
R
Manufactured under license from Dolby Laboratories.
"Dolby" and the double-D symbol are trademarks of Dolby
Laboratories.
"DTS" and "DTS 2.0 + Digital Out" are trademarks of Digital
Theater Systems, Inc.
,HDCD , High Definition Compatible Digital
®
Pacific Microsonics are either registered trademarks or trade-
TM
marks of Pacific Microsonics, Inc. in the United States and/or
other countries.
HDCD system manufactured under license from Pacific
Microsonics, Inc. This product is covered by one or more of the
following: In the USA: 5,479,168, 5,638,074, 5,640,161,
5,808,574, 5,838,274, 5,854,600, 5,864,311, 5,872,531, and in
Australia: 669114, with other patents pending.
Apparatus Claims of U.S. Patent Nos. 4,631,603, 4,577,216,
and 4,819,098, licensed for limited viewing uses only.
This product incorporates copyright protection technology that
is protected by method claims of certain U.S. patents and other
intellectual property rights owned by Macrovision Corporation
and other rights owners. Use of this copyright protection tech-
nology must be authorized by Macrovision Corporation, and is
intended for home and other limited viewing uses only unless
otherwise authorized by Macrovision Corporation. Reverse en-
gineering or disassembly is prohibited.
MPEG Layer-3 audio decoding technology licensed from
Fraunhofer IIS and Thomson multimedia.
Windows Media, and the Windows logo
are trademarks, or registered trademarks
of Microsoft Corporation in the United
States and/or other countries.
WMA is a compression format developed
by Microsoft Corporation. It achieves the
same sound quality as MP3 with a file
size that is smaller than that of MP3.
and
®
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