Panasonic DMREH56 User Manual download pdf (Page 81)

RQT8415

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.

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.

Decoder

A decoder restores the coded audio signals on DVDs to normal. This

is called decoding.

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.

When recording on this unit Dolby Digital (2 channel) is the default

audio.

Down-mixing

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 television’s

speakers. Some discs prohibit down-mixing and this unit can then

only output the front two channels.

DPOF (Digital Print Order Format)

DPOF is the standard printing format for still picture data taken by a

digital camera, etc. It is used for automatic printing at a photo

developing store or on your home printer.

Drive

In the instance of this unit, this refers to the hard disk (HDD), disc

(DVD) and SD card (SD). These perform the reading and writing of

data.

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 dialogue clearly.

Electronic Programme Guide (EPG)

This is a system used to display the television programme list on

televisions, computers and cellular phones. Data is transmitted using

the internet or television waves. This unit is compatible with the

method using television waves. You can use the television

programme list for functions such as timer recording.

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, +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.

Folder

This is a place on the hard disk or memory card where groups of

data are stored together. In the case of this unit, it refers to the place

where still pictures (JPEG, TIFF) and MPEG2 are stored.

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),

+RW, SD Memory Cards and the HDD or unused +R and +R DL on

this unit. 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.

HDD (Hard disk drive)

This is a mass data storage device used in computers, etc. A disk

with a surface that has been treated with magnetic fluid is spun and

a magnetic head is brought in close proximity to facilitate the reading

and writing of large amounts of data at high speed.

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.

LPCM (Linear PCM)

These are uncompressed digital signals, similar to those found on

CDs. LPCM sound is available when recording in XP mode.

MPEG2 (Moving Picture Experts Group)

A standard for efficiently compressing and expanding colour video.

MPEG2 is a compression standard used for DVD and satellite based

digital broadcasting. This unit records programmes using MPEG2.

MPEG2 moving picture files shot with a Panasonic SD multi-camera,

etc. can be copied to the HDD or a DVD-RAM disc.

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 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.

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.

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

Troubleshooting guide/Glossary

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