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HDMI – High Denition Multimedia Interface
Digital interface for digital video and audio data
transmission (preferred for HDTV).
HDTV – High Denition Television
High resolution television with a resolution up to 5 times
higher or ner than PAL or NTSC. However, there is
no compatibility, as the transmission process DVB-S2
and the compression technique MPEG4 are used for
broadcasting.
The principal features of HDTV are the larger picture format
(16:9), the doubled number of scanning lines (increased
from the currently 625 to 1,250) and digital sound quality.
High band
Satellite frequency range between 11.7 GHz and
12.75 GHz.
H.264
Another designation for MPEG-4.
LNB - Low Noise Block Converter
Converts the satellite downlink frequencies into the Sat-IF
for the rst satellite.
Low band
Satellite frequency range between 10.7 GHz and
11.7 GHz.
MPEG-2
MPEG is the abbreviation for Moving Picture Experts
Group, a working group that formulates internationally
applicable standards for the digital compression of video
and audio. MPEG-2 has become established as the
standard for compression of digital TV signals. MPEG-2
works up to a data rate of 100 Mbit/s.
MPEG-4
A further development of MPEG-2 with even higher data
compression, intended for HDTV transmissions.
NID
The channel identication number is also referred to as
the Network ID or NID.
OSD – On-Screen Display
Displays by the receiver on the TV screen (e.g. main
menu)
PAL
Analogue TV standard
Pay TV
Television channels available on subscription (e.g.
PREMIERE). Encrypted transmitters which can only be
decrypted by using the appropriate smart card. As a rule
these services are subscription-only.
PCMCIA
Standard for internal decoder interface for pay-TV
PID
The PID (Packet IDentication) number is an identication
number for video signals and audio signals in the digital
data stream of DVB-MPEG -2 signals. The receiver
uses the PID number to create a unique assignment for
the video and audio data transmission. The PCR PID is
the identication number for the synchronization signal.
The PID-PCR is normally identical to the video PID. For
programmes broadcast in multiple languages, the audio
PD can be entered manually to assign a different language
to the TV programme. After the PID is entered, the digital
receiver automatically selects the audio data identied by
the PID number from the data stream and assigns it to the
video signal.
PIN
Personal Identication Number. For this unit the PIN is a
4-digit numeric code which must be entered to unlock the
unit to allow access to certain functions and channels.
QAM - Quadrature-Amplitude-Modulation
Digital modulation process with phase shift keying, which
is used for transmissions in cable networks.
QPSK - Quadrature Phase Shift Keying
Digital modulation process that is used for satellite
transmission (8PSK is also used in connection with
HDTV).
Receivers
Satellite receiver
RGB
Video signal made up of three individual colour signals
(red, green, blue)
SAT IF signal
Receiver input signal
Scart cable
21-pin connecting cable (e.g. receiver/TV)
Smart card
Card from Pay TV provider to decrypt its channels
Stand-by
Standby mode
Symbol Rate
The symbol rate describes the quantity of data that is
transmitted per second. The symbol rate is measured
in MSymbols/s and is equal to the number of symbols
received per second.
Brief Technical Glossary