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Helpful Hints
Bitstream
This is the digital form of multi-channel audio data (e.g., 5.1 channel)
before it is decoded into its various channels.
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.
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-Videos 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.
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Film is 24 or 30 frames per second, with motion picture film
generally being 24 frames per second.
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Video is 60 fields per second (two fields making up one 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 on this unit.
Formatting
Formatting is the process of making media such as DVD-RAM
recordable on recording equipment.
You can format DVD-RAM on this unit.
Formatting irrevocably erases all recordings on the disc.
Frame and field
Frame refers to the single images that constitute the video you see
on your TV. Each frame consists of two fields.
Frame
Field
Field
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A frame still shows two fields, so there may be some blurring, but
picture quality is generally better.
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A field still shows less picture information so it may be rougher, but
there is no blurring.
Linear PCM (LPCM)
These are uncompressed digital signals. CDs are recorded with 44.1
kHz/16 bit PCM, while DVDs use PCM between 48 kHz/16 bit and 96
kHz/24 bit, allowing playback with greater quality sound.
The linear PCM signals output from the DIGITAL AUDIO OUT
OPTICAL terminal are stereo (2 channel).
LPCM sound is available when recording in XP mode.
MP3 (MPEG Audio Layer 3)
An audio compression method that compresses audio to
approximately one tenth of its size without any considerable loss of
audio quality. You can play MP3s you have recorded onto CD-R and
CD-RW.
Pan & Scan/Letterbox
In general, DVD-Video are produced with the intention that they be
viewed on a widescreen TV (16:9 aspect ratio), so images often
don’t fit regular (4:3 aspect ratio) TVs. 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.
Playback control (PBC)
If a Video CD has playback control, you can select scenes and
information with menus.
(This unit is compatible with version 2.0 and 1.1.)
Progressive/Interlace
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.
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.
VBR (Variable Bitrate)
This is a method of video recording that adjusts the bit rate according
to video signal.
Title/Chapter (DVD-Video)
DVD-Video are divided into large sections (titles) and smaller
sections (chapters). The numbers allocated to these sections are
called title numbers and chapter numbers.
Example
(1) Title 1
(2) Title 2
(3) Chapter 1
(4) Chapter 2
(5) Chapter 3
Track
This is the smallest division on CD and Video CD.
Example
(1) Track 1
(2) Track 2
(3) Track 3
(4) Track 4
(5) Track 5
Glossary
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