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Glossary
DVI (Digital Visual Interface) : A digital interface
standard created by the Digital Display Working Group
(DDWG) to convert analog signals into digital signals to
accommodate both analog and digital monitors.
RGB signals : These are the three video signals,
Red Green Blue, which make up the picture. Using
these signals improves picture quality.
S-VHS signals : These are 2 separate Y/C video
signals from the S-VHS and Hi-8 recording
standards. The luminance signals Y (black and white)
and chrominance signals C (colour) are recorded
separately on the tape. This provides better picture
quality than with standard video (VHS and 8 mm)
where the Y/C signals are combined to provide only
one video signal.
NICAM sound : Process by which digital sound
can be transmitted.
16:9 : Refers to the ratio between the length
and height of the screen. Wide screen televisions
have a ratio of 16/9, conventional screen TV sets
have a ratio of 4/3.
MHEG (Multimedia and Hypermedia information
coding Expert Group) : provides standards for the
coded representation of multimedia hypermedia
information objects that are interchanged among
applications and services using a variety of media.
The objects define the structure of a multimedia
hypermedia presentation.
HDMI (High-Definition Multimedia Interface) :
Provides an uncompressed, all digital audio/video
interface between the TV and any HDMI-equipped
audio/video component, such as set-top box, DVD
player and A/V receiver. HDMI supports enhanced or
high-definition video plus two-channel digital audio.
System : Television pictures are not broadcast in the
same way in all countries. There are different standards:
BG, DK, I, and LL’. The System setting (page 24) is used to
select these different standards. This is not to be confused
with PAL or SECAM colour coding. PAL is used in most
countries in Europe, SECAM in France, Russia and most
African countries. The United States and Japan use a
different system called NTSC.
HDCP (High-bandwidth Digital-Content Protection):
HDCP encrypts the transmission of digital content
between the video source or transmitter such as a
computer, DVD player or set-top box and the digital
display or receiver such as a monitor, television or
projector.
PCM (Pulse Code Modulation) is a common method
of storing and transmitting uncompressed digital audio.
Since it is a generic format, it can be read by most audio
applications—similar to the way a plain text file can be
read by any word-processing program. PCM is used by
Audio CDs and digital audio tapes (DATs).
AC3 (Audio Coding 3) also known as Dolby Digital is
supported as optional audio standard by Digital Video
Broadcast. Dolby Digtial signal adapts to the viewer’s
playback system, delivering the best posible sound to all
viewers regardless of their equipment.
MPEG (Moving Picture Experts Group) is the
nickname given to a family of International Standards
used for coding audio-visual information in a digital
compressed format.