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Istruzioni per l'uso Panasonic, Modello DMREH65

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EH65.book Page 73 Monday, April 3, 2006 5:10 PM
Glossary
Bitstream
HDD (Hard disk drive)
This is the digital form of multi-channel audio data (e.g., 5.1 channel)
This is a mass data storage device used in computers, etc. A disk
before it is decoded into its various channels.
with a surface that has been treated with magnetic fluid is spun and
CPPM (Content Protection for Prerecorded Media)
a magnetic head is brought in close proximity to facilitate the reading
A copy protection system used for DVD-Audio files. This unit
and writing of large amounts of data at high speed.
supports CPPM.
HDMI (High Definition Multimedia Interface)
CPRM (Content Protection for Recordable Media)
HDMI is a next-generation digital interface for consumer electronic
products. Unlike conventional connections, it transmits
CPRM is technology used to protect broadcasts that are allowed to
uncompressed digital video and audio signals on a single cable. This
be recorded only once. Such broadcasts can be recorded only with
unit supports high-definition video output [720p (750p), 1080i
r
y

CPRM compatible recorders and discs.
a
(1125i)] from HDMI AV OUT terminals. To enjoy high-definition video
s
Decoder
a high definition compatible television is required.
A decoder restores the coded audio signals on DVDs to normal. This
JPEG (Joint Photographic Experts Group)
is called decoding.
This is a system used for compressing/decoding colour still pictures.
/Glos
DivX
If you select JPEG as the storage system on digital cameras, etc.,
A video compression format developed by DivXNetworks, Inc. that
the data will be compressed to 1/10–1/100 of its original size. The
compresses video files without any considerable loss of video quality.
benefit of JPEG is less deterioration in picture quality considering
Dolby Digital
the degree of compression.
g guide
This is a method of coding digital signals developed by Dolby
LPCM (Linear PCM)
i
n

Laboratories. Apart from stereo (2-channel) audio, these signals can
These are uncompressed digital signals, similar to those found on
also be multi-channel audio. A large amount of audio information can
CDs. LPCM sound is available when recording in XP mode.
hoot
be recorded on one disc using this method.
MPEG2 (Moving Picture Experts Group)
s
When recording on this unit Dolby Digital (2 channel) is the default audio.
A standard for efficiently compressing and expanding colour video.
le
Down-mixing
MPEG2 is a compression standard used for DVD and satellite based
This is the process of remixing the multi-channel audio found on
digital broadcasting. This unit records programmes using MPEG2.
r
oub

some discs into two channels. It is useful when you want to listen to
MPEG2 moving picture files shot with a Panasonic SD multi-camera,
T
the 5.1-channel audio recorded on DVDs through your television’s
etc. can be copied to the HDD or a DVD-RAM disc.
speakers. Some discs prohibit down-mixing and this unit can then
MP3 (MPEG Audio Layer 3)
only output the front two channels.
An audio compression method that compresses audio to approximately
[DVD-A] Tracks that do not allow down-mixing will not play correctly on
one tenth of its size without any considerable loss of audio quality. You
this unit except when connecting with an HDMI cable to an amplifier
can play MP3 you have recorded onto CD-R and CD-RW.
that meets HDMI standards (Ver. 1.1 or later) and is CPPM compatible.
Pan&Scan/Letterbox
DPOF (Digital Print Order Format)
In general, DVD-Video are produced with the intention that they be
DPOF is the standard printing format for still picture data taken by a
viewed on a widescreen television (16:9 aspect ratio), so images
digital camera, etc. It is used for automatic printing at a photo
often don’t fit regular (4:3 aspect ratio) televisions. Two styles of
developing store or on your home printer.
picture, “Pan & Scan” and “Letterbox”, deal with this problem.
Pan & Scan: The sides are cut off so the picture fills
Drive
the screen.
In the instance of this unit, this refers to the hard disk (HDD), disc (DVD)
and SD card (SD). These perform the reading and writing of data.
DTS (Digital Theater Systems)
Letterbox: Black bands appear at the top and
This surround system is used in many movie theaters. There is good
bottom of the picture so the picture itself
separation between the channels, so realistic sound effects are possible.
appears in an aspect ratio of 16:9.
Dynamic range
Dynamic range is the difference between the lowest level of sound
Playback control (PBC)
that can be heard above the noise of the equipment and the highest
If a Video CD has playback control, you can select scenes and
level of sound before distortion occurs.
information with menus.
Dynamic range compression means reducing the gap between the
(This unit is compatible with version 2.0 and 1.1.)
loudest and softest sounds. This means you can listen at low
Progressive/Interlace
volumes but still hear dialogue clearly.
The PAL video signal standard has 625 (or 576) interlaced (i) scan
Film and video
lines, whereas progressive scanning, called 625p (or 576p), uses
DVD-Videos are recorded using either film or video. This unit can
twice the number of scan lines. For the NTSC standard, these are
determine which type has been used, then uses the most suitable
called 525i (or 480i) and 525p (or 480p) respectively.
method of progressive output.
Using progressive output, you can enjoy the high-resolution video
Film: Recorded at 25 frames per second (PAL discs) or 24 frames
recorded on media such as DVD-Video.
per second (NTSC discs). (NTSC discs recorded at 30 frames
Your television must be compatible to enjoy progressive video.
per second as well.)
Panasonic televisions with 625 (576)/50i · 50p, 525 (480)/60i · 60p
Generally appropriate for motion picture films.
input terminals are progressive compatible.
Video: Recorded at 25 frames/50 fields per second. (PAL discs) or
Protection
30 frames/60 fields per second (NTSC discs). Generally
You can prevent accidental deletion by setting writing protection or
appropriate for TV drama programmes or animation.
deletion protection.
Finalize
RGB
A process that makes play of a recorded CD-R, CD-RW, DVD-R, etc.
This refers to the three primary colours of light, red (R), green (G),
possible on equipment that can play such media. You can finalize DVD-
and blue (B) and also the method of producing video that uses them.
R, DVD-R DL, DVD-RW (DVD-Video format), +R, +R DL on this unit.
By dividing the video signal into the three colours for transmission,
After finalizing, the disc becomes play-only and you can no longer
noise is reduced for even higher quality images.
record or edit. However, finalized DVD-RW can be formatted to
become recordable.
Sampling frequency
Sampling is the process of converting the heights of sound wave (analog
Folder
signal) samples taken at set periods into digits (digital encoding).
This is a place on the hard disk or memory card where groups of
Sampling frequency is the number of samples taken per second, so
data are stored together. In the case of this unit, it refers to the place
larger numbers mean more faithful reproduction of the original sound.
where still pictures (JPEG, TIFF) and MPEG2 are stored.
Thumbnail
Formatting
This refers to a miniature representation of a picture used to display
Formatting is the process of making media such as DVD-RAM
multiple pictures in the form of a list.
recordable on recording equipment.
You can format DVD-RAM, DVD-RW (only as DVD-Video format),
TIFF (Tag Image File Format)
+RW, SD Memory Cards and the HDD or unused +R and +R DL on
This is a system used for compressing/decoding colour still pictures,
this unit. Formatting deletes irrevocably all contents.
a common format for storing high quality images on digital cameras
and other devices.
Frames and fields
1080i
Frames refer to the single images that constitute the video you see
In one high definition image, 1080 (1125) alternating scan lines pass
on your television. Each frame consists of two fields.
every 1/60th of a second to create an interlace image. Because
1080i (1125i) more than doubles current television broadcasts of
u
r
480i (525i), the detail is much clearer and creates a more realistic
and rich image.
Frame
Field
Field
720p
≥A frame still shows two fields, so there may be some blurring, but
In one high definition image, 720 (750) scan lines pass at the same
picture quality is generally better.
time every 1/60th of a second to create a progressive image. Since
RQT8380
≥A field still shows less picture information so it may be rougher, but
progressive video does not alternate scan lines like interlace, there
there is no blurring.
is a minimal amount of screen flicker.
73


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