GLOSSARY
Dolby Digital
Dolby Laboratories audio compression
technology that allows up to 6 channels
(Right, Left, Center, Surround Right,
Surround Left and Subwoofer) in one audio
stream (AC3). Most DVDs contain Dolby
Digital audio.
Dolby Surround
Dolby Laboratories audio encoding
technology that combines the information for
two additional channels (Center, Surround)
in a standard stereo signal. The Dolby
Surround signal can be played on any stereo
equipment, however a Dolby Surround
Decoder is needed to separate the Center
and Surround channels from the stereo
channels.
Dolby Surround Pro Logic
An optimized decoder technology for Dolby
Surround encoded signals.
DRC (Dynamic Range Control)
DRC lets you limit the dynamic range of a
Dolby Digital encoded program.
DTS
An audio compression system for cinemas
developed by Digital Theater Systems, Inc.
DVD (Digital Versatile Disc)
The DVD disc is a 12 cm disc, containing
two layers of digital information. The
maximum amount of data on a single-layer,
single-sided DVD can be up to 4.7
Gigabytes.
A two-layer double-sided DVD can be up to
18 Gigabytes.
JPEG (Joint Photographic Expert Group)
JPEG images are bitmapped images that
use a compression method in order to save
memory space.
Macrovision
Copyright protection technology developed
by Macrovision Corporation. Copyright
owners can protect their videocassettes
from unauthorized recording on VCRs by
using Macrovision technology.
MP3
Digital audio data compressed in MPEG1
Layer 3 format. MP3 files are approximately
ten times smaller than the non-compressed
PCM data.
OSD (On Screen Display)
Information about the disc and player status
are displayed directly on the monitor screen.
Parental guidance function
Frequently Termed “Parental Control” or
“Parental Management Level”, this function
is based on a movie rating assigned by the
MPAA (Motion Picture Association of
America). Depending on the DVD player
setting, this classification enables entire
DVDs to be blocked for viewing by children
and teenagers. Note - not all DVD
manufacturers support this rating system.
Currently, the following levels are officially
recognized by the MPAA:
• G (General audience): suitable for all
members of the general public including
children
• PG (Parental Guidance): allowed for
general viewing but with parental
supervision
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