Technical Terms - TechniSat DIGIT MF4-K CC Handbuch

9 Technical terms

Antenna cable:
Connecting cable between the modulator of the cable recei-
ver and the antenna input of the television set, used as an
alternative if no SCART socket is available.
AV: see SCART
Cable receiver:
The television set cannot process the digital signals received
via the cable network. The cable receiver processes the sig-
nal in such a way that Audio and Video signals (AV) are pro-
vided at the receiver outputs in a form that can be processed
by the television set.
CATV:
Abbreviation for Community Antenna Television. Reception
of radio and television programmes via a community anten-
na. In the case of cable television networks, this is used inter-
nationally in the form of cable television or broadband cable
networks.
Channel:
Part of a frequency band that is delivered in accordance with
a specified allocation procedure. A TV channel consists of
two frequencies, one for the vidual and one for the audio con-
tent. Each channel is designated with a specific number (with
the exception of television channels in Europe broadcast on
the 40-230 MHz frequency band, these are designated by let-
ters).
Co-axial cable:
Connection cable between antenna socket and cable recei-
ver,used to transmit the signals received.
Data compression/MPEG1/MPEG2:
The volume of data involved in transmitting the current televi-
sion standard (625 lines, and a picture frequency of 50 Hz
results in a figure of 216 MBit/s of digital data. This would
require bandwidths that can currently not be provided, whet-
her by cable or by terrestrial systems. For this reason, the
total volume of data transmitted is reduced by means of a
compression algorithm. For Europe, MPEG-2 has been
accepted as the international standard for data compression.
MPEG-2 is an expanded version of MPEG-1.
DVB:
Digital Video Broadcasting: A universal digital transmission
technology used for pictures, graphics, sound and text, i.e.
for data in any shape or form, and in any possible, always
appropriate quality.
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