Panasonic DMRES15 User Manual download pdf (Page 50)

RQT8318

Glossary

Bitstream

This is the digital form of multi-channel audio data (e.g., 5.1 channel)

before it is decoded into its various channels.

Component video output

Component signal outputs the colour difference signals (P

B/PR) and

luminance signal (Y) separately in order to achieve high fidelity in

reproducing colours. If the television is compatible with progressive

output, a high quality picture can be output because this unit’s

component video output terminal outputs a progressive output

signal.

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.

DivX

A video compression format developed by DivXNetworks, Inc. that

compresses video files without any considerable loss of video

quality.

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 for stereo output. It is useful when you

want to listen to the 5.1-channel audio recorded on DVDs through

your television’s speakers. Some discs prohibit down-mixing and this

unit can then only output the front two channels.

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.

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.

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 films.

Video:

Recorded at 25 frames/50 fields per second (PAL discs) or 30

frames/60 fields per second (NTSC discs). Generally appropriate for

TV drama programmes or animation.

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 or +R DL on

this 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.

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),

+R, +R DL or +RW on this unit.

When you use a new DVD-RW, +R, +R DL or +RW, it must be

formatted.

Formatting deletes irrevocably all contents.

Frames and fields

Frames refer to the single images that constitute the video you see

on your television. Each frame consists of two fields.

• A frame still shows two fields, so there may be some blurring, but

picture quality is generally better.

• A field still shows less picture information so it may be rougher, but

there is no blurring.

JPEG (Joint Photographic Experts Group)

This is a system used for compressing/decoding colour 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

feature 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 considerable loss of

audio quality. You can play MP3 you have recorded onto DVD-R,

CD-R and CD-RW.

Pan & Scan/Letterbox

In general, DVD-Video are produced with the intention that they be

viewed on a widescreen television (16:9 aspect ratio), so images

often don’t fit regular (4:3 aspect ratio) televisions. Two styles of

picture, “Pan & Scan” and “Letterbox”, deal with this problem.

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

The PAL video signal standard has 625 (or 576) interlaced (i) scan

lines, whereas progressive scanning, called 625p (or 576p), uses

twice the number of scan lines. For the NTSC standard, these are

called 525i (or 480i) and 525p (or 480p) respectively.

Using progressive output, you can enjoy the high-resolution video

recorded on media such as DVD-Video.

Your television must be compatible to enjoy progressive video.

Panasonic televisions with 625 (576)/50i · 50p, 525 (480)/60i · 60p

input terminals are progressive compatible.

Protection

You can prevent accidental deletion by setting writing protection or

deletion protection.

RGB

This refers to the three primary colours of light, red (R), green (G),

and blue (B) and also the method of producing video that uses them.

By dividing the video signal into the three colours for transmission,

noise is reduced for even higher quality images.

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 list.

TIFF (Tag Image File Format)

This is a system used for compressing/decoding colour still pictures.

A common format for storing high quality images on digital cameras

and other devices.

Frame Field Field

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.

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Panasonic DMRES15 User Manual Page 50

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