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Black bands appear at the top and
bottom of the picture so the picture
itself appears
in
an aspect ratio of 16:9.
Letterbox:
HDMI (High-Definition Multimedia Interface)
HDMI is a next-generation digital interface for consumer
electronic products. Unlike conventional connections, it transmits
uncompressed digital video and audio signals on a single cable. This
unit supports high-definition video output (720p, 1080i and 1080p)
from HDMI AV
OUT
terminal.
To
enjoy high-definition video a high
definition compatible television is required.
Pan & Scan/Letterbox
In general, DVD-Video are produced with the intention that they will
be viewed on a widescreen TV (16:9 aspect ratio), so images often
don't fit
regularTVs
(4:3 aspect ratio). 2 styles of picture, "Pan &
Scan" and "Letterbox", deal with this problem.
Pan
& Scan:
The
sides are cut off so the picture
fills the screen.
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.
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.
CPRM (Content Protection for Recordable Media)
CPRM
is technology used to protect broadcasts that are allowed to
be recorded only once. Such broadcasts can be recorded only with
CPRM-compatible recorders and discs.
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.
Down-mixing
This
is
the
process
of
remixing
the
multi-channel
audio
found
on
some
discs
into
two
channels.
It
is
useful
when
you
want
to
listen
to
the
5.1-channel
audio
recorded
on
DVDs
through
your
TV's
speakers.
Some
discs
prohibit
down-mixing.
If
this
is
the
case,
this
unit
can
only
output
the
front
two
channels.
DivX
A video compression format developed by DivX, Inc. that
compresses video files without any considerable loss of video quality.
Decoder
A decoder restores the coded audio signals on DVDs to normal. This
is called decoding.
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.
Glossary
/-_.
._-"-----------------------------------...
Bitstream
This
is
a signal compressed
and
converted into digital form.
It
is
converted
back
to
a multi-channel audio signal,
e.g.,
5.1-channel,
by
a decoder.
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
hear
dialog
clearly
at
low
volume.
Film and Video
DVD-Video are recorded using either film
or
video.
The
unit
can
determine which type
has
been used, then uses the
most
suitable
method of progressive output.
Film is
24
or
30 frames
per
second, with motion picture film generalty
being
24
frames per second.
Video is 60 fields per second (2 fields making
up
1 frame).
Finalize
A process
that
makes
play of a recorded
CD-R,
CD-RW,
DVD-R,
etc.
possible
on
equipment that
can
play
such
media.
You
can
finalize
DVD-R,
DVD-R
DL,
DVD-RW
(DVD-Video format), +R,and
+R
DL
on
the
unit. After
finalizing,
the
disc becomes play-only
and
you
can
no
longer record or edit.
However,
finalized
DVD-RW
can
be
formatted
to
become recordable.
Folder
This is a place on the
memory
card where groups
of
data are stored
together. In the case
of
this unit, it refers to the place where stilt
pictures (JPEG) are stored.
Formatting
Formatting is the process of making media such as DVD-RAM
recordable on recording equipment.
You
can format DVD-RAM, DVD-RW (only
as
DVD-Video format),
+RW
and
SD card on this unit.
Formatting irrevocably erases all contents.
Frame and field
Frame refers to the single images that constitute the video you see
on your
TV.
Each frame consists of 2 fields.
Progressive/lnterlace
NTSC, the video signal standard, has 480 interlaced (i) scan lines,
whereas progressive scanning uses twice the
number
of scan lines.
This is calted 480p.
Using progressive output, you can enjoy the high-resolution video
recorded on media such
as
DVD-Video.
Your
TV must
be
compatible to enjoy progressive video.
Protection
You
can prevent accidental erasure by setting writing protection
or
erasure protection.
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.
Thumbnail
This refers to a miniature representation of a picture used to display
multiple pictures in the form of a matrix.
1080i
In
one high definition image, 1080 alternating scan lines pass every
1/60th of a second to create an interlace image. Because 1080i
more than doubles current television broadcasts
of
480i, the detail is
much clearer and creates a more realistic and rich image.
1080p
In
one high definition image, 1080 scan lines pass at the same
time every 1/6Oth
of
a
second
to create a progressive image. Since
progressive video
does
not alternate scan lines like interlace, there
is a minimal
amount
of screen flicker.
720p
In
one high definition image,
720
scan lines pass at the same time
every 1/60th
of
a
second
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
• A frame still shows 2 fields, so there may
be
some blurring
between them,
but
picture quality is generally better.
• A field still shows less picture information so it
may
be
rougher, but
there is
no
blurring.
\
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RQT9046
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