Panasonic DMREX87 Operating Guide

96

RQT8866

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.

[EX87]

A copy protection system used for DVD-Audio fi les. This unit supports 
CPPM.

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.

A decoder restores the coded audio signals on DVDs to normal. This is 
called decoding.

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.
When recording on this unit Dolby Digital (2 channel) is the default 
audio.

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.
[EX87] [DVD-A] Tracks that do not allow down-mixing will not play 
correctly on this unit except when connecting with an HDMI cable to an 
amplifi er that meets HDMI standards (Ver. 1.1 or later) and is CPPM 
compatible.

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.

This surround system is used in many movie theaters. There is good 
separation between the channels, so realistic sound effects are 
possible.

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 dialogue clearly at low volume.

DVD-Video are recorded using either fi lm or video. The 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 fi lms.

Video: 

Recorded at 25 frames/50 fi elds per second. (PAL discs) 
or 30 frames/60 fi elds per second (NTSC discs). Generally 
appropriate for TV drama programmes or animation.

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 fi nalise DVD-
R, DVD-R DL, DVD-RW (DVD-Video format), +R, and +R DL on the 
unit. After fi nalising, the disc becomes play-only and you can no longer 
record or edit. However, fi nalised DVD-RW can be formatted to become 
recordable.

This is a place on the hard disk, disc or SD Card where groups of data 
are stored together. In the case of this unit, it refers to the place where 
still pictures (JPEG) and MPEG2 are stored.

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, 
SD Card and the HDD or unused +R and +R DL on this unit.
Formatting irrevocably erases all contents.

Frame refers to the single images that constitute the video you see on 
your TV. Each frame consists of 2 fi elds.

W

T

Frame

Field

Field

 A frame still shows 2 fi elds, so there may be some blurring between 

them, but picture quality is generally better.

 A fi eld still shows less picture information so it may be rougher, but 

there is no blurring.

This is a mass data storage device used in computers, etc. A disk 
with a surface that has been treated with magnetic fl uid is spun and a 
magnetic head is brought in close proximity to facilitate the reading and 
writing of large amounts of data at high speed.

Unlike conventional connections, it transmits uncompressed digital 
video and audio signals on a single cable. This unit supports high-
defi nition video output [720p (750p), 1080i (1125i) and 1080p (1125p)] 
from HDMI AV OUT terminal. To enjoy high-defi nition video a high 
defi nition compatible television is required.

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 benefi t of 
JPEG is less deterioration in picture quality considering the degree of 
compression.

These are uncompressed digital signals, similar to those found on CDs. 
LPCM sound is available when recording in XP mode.

A standard for effi ciently compressing and expanding colour video. 
MPEG2 is a compression standard used for DVD and satellite based 
digital broadcasting. This unit records programmes using MPEG2.
SD Video fi les shot with a Panasonic SD video camera, etc. can be 
copied to the HDD or a DVD-RAM disc. 

An audio compression method that compresses audio to approximately 
one-tenth of its size without any signifi cant loss of audio quality. You 
can play MP3s you have recorded onto DVD-R, DVD-R DL, CD-R and 
CD-RW.

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 
fi t regular TVs (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 
fi lls 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.

If a Video CD has playback control, you can select scenes and 
information with menus on the screen.
(This unit is compatible with version 2.0 and 1.1.)

DMR-EX77_87EB.indb   96

DMR-EX77_87EB.indb   96

2007/05/17   11:12:44

2007/05/17   11:12:44