Panasonic DMP-BD50 Operating Instructions Manual - Glossary
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RQT9184
(ENG)
Glossary
AVCHD
AVCHD is a new format (standard) for high definition video cameras
that can be used to record and play high-resolution HD images.
BD-J
Some BD-Video discs contain Java applications, and these
applications are called BD-J. You can enjoy various interactive
features in addition to playing normal video.
BD-Live
This is a BD-Video (BD-ROM version 2 Profile 2) that supports the
new functions such as Internet connection, etc. in addition to the
BONUSVIEW function.
Bitstream
This is the digital form of multi-channel audio data (e.g., 5.1 channel)
before it is decoded into its various channels.
BONUSVIEW (Final Standard Profile)
This is a BD-Video (BD-ROM version 2 Profile 1 version 1.1) that
supports the new functions such as Picture-in-picture, Secondary
Audio, and Virtual Package, etc.
DivX
DivX is a popular media technology created by DivX, Inc. DivX
media files contain highly compressed video with high visual quality
that maintains a relatively small file size.
DNS Server
A server which acts like a telephone directory and translates Internet
domain names into IP addresses.
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.
Dolby Digital Plus
Multi-channel audio and higher audio quality is made possible using
Dolby Digital Plus. BD-Video supports up to 7.1 channel output.
Dolby TrueHD
Dolby TrueHD is a very high quality audio format that reproduces the
studio master audio. BD-Video supports up to 7.1 channel output.
Down-mixing
This is the process of remixing the multi-channel audio found on
some discs into fewer channels.
DTS (Digital Theater Systems)
This surround system is used in many movie theaters. There is good
separation between the channels, so realistic sound effects are
possible.
DTS-HD
DTS-HD is a high-quality, sophisticated audio format used in movie
theaters. Previous DTS Digital Surround-compatible equipment can
play DTS-HD as DTS Digital Surround audio. BD-Video supports up
to 7.1 channel output.
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.
Dynamic range compression means reducing the gap between the
loudest and softest sounds. This means you can listen at low
volumes but still hear dialog clearly.
Film and video
DVD-Video are recorded using either film or video. This unit can
determine which type has been used, then uses the most suitable
method of progressive output.
Film:
Recorded at 24 frames per second. (Recorded at 30
frames per second as well). Generally appropriate for
motion picture films.
Video:
Recorded at 30 frames/60 fields per second. Generally
appropriate for TV drama programs or animation.
Frames and fields
Frames refer to the single images that constitute the video you see
on your television. Each frame consists of two fields.
A frame still shows two fields, so there may be some blurring, but
picture quality is generally better.
A field still shows less picture information so it may be rougher, but
there is no blurring.
Gateway
IP address of the electronic device providing Internet access.
Usually called a router IP address. (e.g., 192.168.0.1)
HDMI (High-Definition Multimedia Interface)
HDMI is a digital interface for consumer electronic products. Unlike
conventional connections, it transmits uncompressed digital video
and audio signals on a single cable.
Hub
Used for connecting more than one device to the network.
IP address
A set of numbers which distinguish each device on the network
when, for example, connected to the Internet. When using a PC in a
LAN to access a PC or device that is not included in the LAN, the IP
address is called the local IP address. (e.g., 192.168.0.10)
JPEG (Joint Photographic Experts Group)
This is a system used for compressing/decoding color still pictures. If
you select JPEG as the storage system on digital cameras, etc., the
data will be compressed to 1/10–1/100 of its original size. The
benefit of JPEG is less deterioration in picture quality considering
the degree of compression.
LAN (Local Area Network)
A group of linked devices in a company, school or home.
Indicates the boundaries of a particular network.
Local storage
This storage area is used as a destination for sub contents for
playing virtual packages on BD-Video.
LPCM (Linear PCM)
These are a kind of PCM format.
These are uncompressed digital signals, similar to those found on
CDs.
MP3 (MPEG Audio Layer 3)
An audio compression method that compresses audio to
approximately one tenth of its size without any significant loss of
audio quality.
Pan&Scan/Letterbox
In general, DVD-Video are produced with the intention that they be
viewed on a widescreen television (16:9 aspect ratio), so images
often don’t fit regular (4:3 aspect ratio) televisions. Two styles of
picture, “Pan & Scan” and “Letterbox”, deal with this problem.
Pan&Scan:The sides are cut off so the picture fills
the screen.
Letterbox: Black bands appear at the top and
bottom of the picture so the picture itself
appears in an aspect ratio of 16:9.
PCM (Pulse Code Modulation)
This is one format for converting analog audio into digital audio,
enabling you to enjoy digital audio with no hassle.
Picture-in-picture
This is a new function of BD-Video that plays the primary video and
secondary video simultaneously. For instance, the function is
capable of playing the original movie as the primary video while
playing video commentary from the film director on a small screen
as a secondary video.
Progressive/Interlace
The video signal standard of NTSC has 480 interlaced (i) scan lines,
whereas progressive (p) scanning uses twice the number of scan
lines, and this is referred to as 480p. Using progressive output, you
can enjoy watching high resolution video.
Router
Distinguishes the IP address assigned to each device, such as the
PC, and relays the flow of data within the network.
Sampling frequency
Sampling is the process of converting the heights of sound wave
(analog signal) samples taken at set periods into digits (digital
encoding). Sampling frequency is the number of samples taken per
second, so larger numbers mean more faithful reproduction of the
original sound.
Subnet mask
Enables efficient network use. A set of numbers which identify which
part of the IP address allocated to every device connected to the
router is the network portion.
Virtual package
Some BD-Video discs copy data to other media (local storage) and
then play the secondary video, secondary audio, and subtitles (sub
contents) simultaneously.
These functions are called virtual packages.
Sub contents are automatically recorded to other media from the
Internet or disc prior to playing the virtual package. The playback
methods vary depending on discs.
1080i (1125i)
In one high definition image, 1080 (1125) alternating scan lines pass
to create an interlaced image. Because 1080i (1125i) more than
doubles current television broadcasts of 480i, the detail is much
clearer and creates a more realistic and rich image.
Frame
Field
Field
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