Bedienungsanleitung Panasonic sc pt450 (Seite 37 von 40) (Englisch)

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REFERENCE

ENGLISHENGLISH

Decoder

A decoder restores the coded audio signals on DVDs to

normal. This is called decoding.

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.

DTS (Digital Theater Systems)

This surround system is used in many movie theaters

around the world. 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.

Film and video

DVD-Videos are recorded using either ﬁ lm 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 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

programs or animation.

Frame still and ﬁ eld still

Frames are the still pictures that go together to make a

moving picture.

There are about 30 frames shown each second.

One frame is made up of two ﬁ elds. A regular television

shows these ﬁ elds one after the other to create frames.

A still is shown when you pause a moving picture. A frame

still is made up of two alternating ﬁ elds, so the picture may

appear blurred, but overall quality is high.

A ﬁ eld still is not blurred, but it has only half the information

of a frame still so picture quality is lower.

HDMI (High-Deﬁ nition Multimedia Interface)

HDMI is a next-generation digital interface for consumer

electronic products. Unlike conventional connections, it

transmits uncompressed digital video and audio signals on a

single cable. This unit supports high-deﬁ nition video output

(720p,1080p) from the HDMI AV OUT terminal. To enjoy

high-deﬁ nition video, a high-deﬁ nition compatible television

is required.

I/P/B

MPEG 2, the video compression standard adopted for use

with DVD-Video, codes frames using these 3 picture types.

I: Intra coded picture

This picture has the best quality and is the best to use

when adjusting the picture.

P: Predictive coded picture

This picture is calculated based on past I or P-pictures.

B: Bidirectionally-predictive coded picture

This picture is calculated by comparing past and

future I and P-pictures so it has the lowest volume of

information.

JPEG (Joint Photographic Experts Group)

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.

Linear PCM (Pulse Code Modulation)

These are uncompressed digital signals, similar to those

found on CDs.

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.

Playback control (PBC)

If a Video CD has playback control, you can select scenes

and information with menus.

Progressive/Interlaced

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

lines, whereas progressive scanning, called 576p, uses

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

these are called 480i and 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.

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.

WMA (Windows Media

Audio)

WMA is a compression format developed by Microsoft

Corporation. It achieves the same sound quality as MP3

with a ﬁ le size that is smaller than that of MP3.

Glossary

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