135
rate of data transmission. Additional bits are
inserted into the data stream, so that error-
correction algorithms can be used on reception.
The FEC error rate corresponds to the
Viterbi rate.
FTP – File Transfer Protocol
File transfer method. FTP is a network protocol
for the transmission of
fi
les via IP (Internet
Protocol) networks
GNU
GNU is not Unix, it is an open operating system
for software developers.
HD – Ready
This is a label created by the EICTA (European
Information, Communications and Consumer
Electronics Industry Technology Association) for
equipment that is capable of reproducing HDTV.
HDCP – High-bandwidth Digital Content
Protection
Encryption system which protects the HDMI and
DVI interfaces for secure transmission of video
and audio data.
HDMI – High De
fi
nition Multimedia Interface
Digital interface for digital video and audio data
transmission between TV and receiver (preferred
for HDTV).
HDTV – High De
fi
nition Television
High resolution television with a resolution up to
fi
ve times higher or
fi
ner than PAL or NTSC.
High band
Satellite frequency range between 11.7 GHz and
12.75 GHz.
H.264
Another designation for MPEG-4.
IP address
Internet Protocol address. Every unit that can be
used in a network has a dedicated IP address
so as to obtain an unambiguous assignment
(address) for e.g. the exchange of data.
JPEG – Joint Photographic Experts Group
Image compression technique.
LAN – Local Area Network
Local network
Linux
Operating system
LNB – Low Noise Block Converter
Converts the satellite downlink frequencies into
the Sat IF.
Low band
Satellite frequency range between 10.7 GHz and
11.7 GHz.
MP3
File format for compressed audio
fi
les
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.
Network
Connection of several PCs that as a result can
communicate and exchange data
NIT
The channel identi
fi
cation number is also
referred to as the Network ID or NIT.
NTFS
File system for storage media
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. Sky). Encrypted channels which can
Brief technical glossary
