Panasonic DMP-BD30 - Manual (Page 30)

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RQT9189
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.
Bitstream
This is the digital form of multi-channel audio data (e.g., 5.1 channel)
before it is decoded into its various channels.
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 theatres. 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
theatres. 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 dialogue 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 25 frames per second (PAL discs) or 24
frames per second (NTSC discs). (NTSC discs recorded
at 30 frames per second as well.)
Generally appropriate for motion picture films.
Video: Recorded at 25 frames/50 fields per second. (PAL discs)
or 30 frames/60 fields per second (NTSC discs).
Generally appropriate for TV drama programmes or
animation.
Final Standard Profile (FSP)
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.
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.
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.
JPEG (Joint Photographic Experts Group)
This is a system used for compressing/decoding colour 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.
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 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.
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 PAL video signal standard has 625 (or 576) interlaced (i) scan
lines, whereas progressive scanning, called 625p (or 576p), uses
twice the number of scan lines. For the NTSC standard, these are
called 525i (or 480i) and 525p (or 480p) respectively.
Using progressive output, you can enjoy the high-resolution video
recorded on media such as DVD-Video.
Your television must be compatible to enjoy progressive video.
Panasonic televisions with 625 (576)/50i · 50p, 525 (480)/60i · 60p
input terminals are progressive compatible.
Sampling frequency
Sampling is the process of converting the heights of sound wave
(analogue 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.
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
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.
1080p (1125p)
In one high definition image, 1080 (1125) scan lines pass at the
same time to create a progressive image. Since progressive video
does not alternate scan lines like interlace, there is a minimal
amount of screen flicker.
24p
This is a progressive image recorded at a rate of 24 frames per
second.
720p (750p)
In one high definition image, 720 (750) scan lines pass at the same
time to create a progressive image. Since progressive video does
not alternate scan lines like interlace, there is a minimal amount of
screen flicker.
Frame Field Field
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