Bedienungsanleitung Yamaha BD-S2900 (Seite 33 von 35) (Englisch)

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REFERENCE

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English

■ AVCHD

AVCHD is a new format (standard) for high definition video cameras that

can be used to record and play high-resolution HD images.

■ BD-J

Some BD-Video discs contain Java applications, and these applications are

called BD-J. You can enjoy various interactive features in addition to playing

normal video.

■ Bitstream

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

it is decoded into its various channels.

■ 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.

■ Dolby Digital Plus

Multi-channel audio and higher audio quality is made possible using Dolby

Digital Plus. BD-Video supports up to 7.1 channel output.

■ Dolby TrueHD

Dolby TrueHD is a very high quality audio format that reproduces the studio

master audio. BD-Video supports up to 7.1 channel output.

■ Down-mixing

This is the process of remixing the multi-channel audio found on some discs

into fewer 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.

■ DTS-HD

DTS-HD is a high-quality, sophisticated audio format used in movie theaters.

Previous DTS Digital Surround-compatible equipment can play DTS-HD as

DTS Digital Surround audio. BD-Video supports up to 7.1 channel output.

■ 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-Video 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.

■ Final Standard Profile (FSP)

This is a BD-Video [BD-ROM version 2 (Profile 1 version 1.1)] that supports

the new functions such as Picture-in-picture, Secondary Audio, and Virtual

Package, etc.

■ 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.

■ HDMI (High-Definition Multimedia Interface)

HDMI is a digital interface for consumer electronic products. Unlike

conventional connections, it transmits uncompressed digital video and audio

signals on a single cable.

■ 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 benefit of JPEG is less

deterioration in picture quality considering the degree of compression.

■ Local storage

This storage area is used as a destination for sub contents for playing virtual

packages on BD-Video.

■ LPCM (Linear PCM)

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 significant loss of audio quality.

■ 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.

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.

■ Picture-in-picture

This is a new function of BD-Video that plays the primary video and

secondary video simultaneously. For instance, the function is capable of

playing the original movie as the primary video while playing video

commentary from the film director on a small screen as a secondary video.

■ 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.

■ 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.

■ Virtual package

Some BD-Video discs copy data to other media (local storage) and then play

the secondary video, secondary audio, and subtitles (sub contents)

simultaneously.

These functions are called virtual packages.

Sub contents are automatically recorded to other media from the disc prior to

playing the virtual package. The playback methods vary depending on discs.

■ 1080i (1125i)

In one high definition image, 1080 (1125) alternating scan lines pass to create

an interlaced image. Because 1080i (1125i) more than doubles current

television broadcasts of 480i, the detail is much clearer and creates a more

realistic and rich image.

■ 1080p (1125p)

In one high definition image, 1080 (1125) scan lines pass at the same time to

create a progressive image. Since progressive video does not alternate scan

lines like interlace, there is a minimal amount of screen flicker.

■ 24p

This is a progressive image recorded at a rate of 24 frames per second.

■ 720p (750p)

In one high definition image, 720 (750) scan lines pass at the same time to

create a progressive image. Since progressive video does not alternate scan

lines like interlace, there is a minimal amount of screen flicker.

GLOSSARY

Frame

Field

Yamaha BD-S2900 Seite 33

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