Panasonic DMR-EZ485VK Mode D’Emploi

91

RQT9056

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.

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.

A video compression format developed by DivX, Inc. that compresses 
video fi les without any considerable loss of video quality.

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.

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.

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 dialog 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 is 24 or 30 frames per second, with motion picture fi lm generally 
being 24 frames per second.
Video is 60 fi elds per second (2 fi elds making up 1 frame).

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

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 still 
pictures (JPEG) 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 
and SD Card 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.

Unlike conventional connections, it transmits uncompressed digital 
video and audio signals on a single cable. This unit supports high-
defi nition video output (720p, 1080i and 1080p) 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.

An audio compression method that compresses audio to approximately 
one-tenth of its size without any signifi cant loss of audio quality. 

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.

The sides are cut off so the picture 
fi lls the screen.

Black bands appear at the top and 
bottom of the picture so the picture 
itself appears in an aspect ratio of 
16:9.

  

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.

You can prevent accidental erasure by setting writing protection or 
erasure protection.

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.

This refers to a miniature representation of a picture used to display 
multiple pictures in the form of a matrix.

In one high defi nition image, 1080 alternating scan lines pass every 
1/60

th

 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.

In one high defi nition image, 1080 scan lines pass at the same 
time every 1/60

th

 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 fl icker.

In one high defi nition image, 720 scan lines pass at the same 
time every 1/60

th

 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 fl icker.

DMR-EZ48VP.indb   91

DMR-EZ48VP.indb   91

2007/12/13   20:44:34

2007/12/13   20:44:34