84
Glossary
Bitstream
This is the compressed form of digital signals. A decoder decodes
these signals into 5.1 surround and multi-channel signals.
Channel (when referring to DVD)
Sound is divided into channels based on the sound’s role.
For example, 5.1 channel
≥Front speakers— 1 left channel and 1 right channel
≥Center speaker —1 channel
≥Surround speakers—1 left channel and 1 right channel
≥Subwoofer— 1 channelk0.1 (the ratio of bass to the total amount
of sound output)
Examples as shown in the status display
(1) 1: Subwoofer signal
(not displayed if there is no subwoofer signal)
(2) 0: No surround
1: Mono surround
2: Stereo surround (left/right)
(3) 1: Center
2: Front leftiFront right
3: Front leftiFront rightiCenter
Direct navigator
This is a list of programmes you have recorded. You can select
programmes from the list to view. The list also shows the date and
time of recording, the channel, and the titles of titled programmes.
The selected programme is played in the background, making
selection even simpler.
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 audio. A large amount of audio
information can be recorded on one disc using this method.
Dolby Pro Logic
A surround system where a 4-channel audio track is recorded as
2 channels and then is restored to 4 channels for play. The
surround channel is monaural.
DPOF (Digital Print Order Format)
DPOF is the standard printing format for still picture data. It is used
at a photo studio to print out the still picture data taken with a digital
camera etc or when you print out using a domestic printer.
Drive
In the instance of this unit, this refers to the hard disk (HDD) and
DVD. These perform the reading and writing of data. Select them
by pressing [HDD] (6) and [DVD] (6).
DTS Digital Surround
This surround system is used in many movie theaters around the
world. The separation between channels is good and the
compression ratio is low, so realistic sound effects are possible.
DTS soundtracks are produced with the assumption that all
channels will be used.
Finalize
This process allows DVD-R to be played on compatible equipment.
Frame and field
Frames are the still pictures that go together to make a moving
picture. A frame is made up of 2 fields.
Frame Field Field
≥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.
Hard disk (HDD)
This is a mass data storage device used in computers etc. A disk
the surface of which 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 special quality of this standard is that there is little
deterioration in picture quality in comparison to the degree of
compression.
Linear PCM
This is a form of signal that has been digitized without compressing
it. CDs are recorded with 44.1 kHz/16 bit PCM, while DVDs use
PCM between 48 kHz/16 bit and 96 kHz/24 bit, allowing
reproduction of greater quality sound.
The linear PCM signals output from the DIGITAL AUDIO OUT,
OPTICAL terminal are stereo (2 channel).
NICAM (NICAM Broadcasting System)
This is a 2 channel sound broadcast system which in most
instances provides high quality stereo sound. Broadcasters can
also transmit two separate mono soundtracks on this system.
3/2 .1 ch
2
1
3
DVD(PAL).book84ページ２００３年５月１３日 火曜日 午後１２時３分
To Next Page
Loading...
