Bedienungsanleitung Panasonic SCPT175 (Seite 35 von 40) (Englisch)

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RQTX0246

Getting StartedPlaying DiscsOther OperationsReference

Glossary

Decoder

A decoder restores the coded audio signals on DVDs to

normal. This is called decoding.

DivX

DivX is a popular media technology created by DivX, Inc.

DivX media files contain highly compressed video with high

visual quality that maintains a relatively small file size.

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 5.1-channel sound.

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 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

programs or animation.

Frame still and field 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 fields. A regular TV shows

these fields 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 fields, so the picture may

appear blurred, but overall quality is high.

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

of a frame still so picture quality is lower.

HDMI (High-Definition 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-definition video

output (720p, 1080i, 1080p) from the HDMI AV OUT

terminal. To enjoy high-definition video, a high-definition

compatible TV 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 colour still

pictures. The benefit 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.

MPEG4

A compression system for use on mobile devices or a

network, that allows highly efficient recording at a low bit

rate.

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 TV 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

WMA is a compression format developed by Microsoft

Corporation. It achieves the same sound quality as MP3

with a file size that is smaller than that of MP3.

SC-PT170-175EB-RQTX0246-B_eng.book Page 35 Wednesday, February 4, 2009 3:20 PM

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