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DNS: Abbreviation of Domain Name System. Readable names (e.g. www.
loewe-int.de) are assigned to numerical IP addresses. DNS servers are
responsible for the resolution of readable addresses into the correspon-
ding IP addresses.
Dolby Digital: Digital multi-channel audio. The digital standard for high
quality home movie systems. The individual channels are broadcast sepa-
rately in this standard. The three front channels right, left and centre,
the two surround channels right and left and the external subwoofer
channels are called a 5.1 signal. Another term for Dolby Digital is AC3.
Dolby Pro Logic: Analogue multi-channel audio. Converts a Dolby-coded
stereo signal into a surround sound. This usually contains four channels
(front left, centre, front right, surround channel). A special subwoofer
channel is not generated in this method.
Dolby Pro Logic II: Analog multi-channel audio. Dolby Pro Logic II is a fur-
ther development of Dolby Pro Logic. This method generates a 6-channel
spatial sound from a stereo or Pro-Logic signal (front left, centre, front
right, surround left, surround right, subwoofer).
Dolby Surround: Analogue multi-channel audio system that brings four
audio channels down to two audio tracks with the aid of a matrix coding.
Dolby Virtual Speaker: The Dolby Virtual Speaker technology simulates the
surround playback of a real 5.1-channel playback with only two speakers.
DRM: Digital Rights Management. Processes to control copyright pro-
tected data. To be used correctly, DRM protected contents require not
only a DRM capable device but also the possession of a license issued
by the provider (to be paid for).
DTS: Digital Theater Systems; Digital multi-channel audio.
DVB-C/-S/-T: Digital Video Broadcasting stands for digital television.
Technical DVB is the standardised process for transmitting digital content
(television, radio, multi-channel audio, room sound, EPG, Teletext, and
other supplemental services) through digital technology. C stands for
transmission via cable, S for distribution via satellite and T for terrestrial
or antenna distribution.
DVD: Abbreviation of Digital Video Disk and later Digital Versatile Disk.
DVD preceiver: Combi-device of DVD player and radio without integrated
amplifier.
DVI: Digital Visual Interface, is an interface for transmitting digital video
and graphic data (without audio).
Dynamic contrast ratio: Here the light intensity of the display is adapted
in case of a high black portion in the picture. The so-called backlights
are dimmed automatically and the contrast ratio increases temporarily,
i.e. dynamically.
E
Electronic Programme Guide: See EPG.
EPG: Electronic Programme Guide is the electronic variant of a printed
television programme guide. Using the EPG you can watch the TV
programme of the TV stations which transfer the appropriate data. The
overview of the programmes contains the title, beginning and end and
the duration of the programme. In addition also a brief description of
respective content of the programme is displayed.
Ethernet: Cable linked data net technology for local networks (LANs). Also
covers standards for e.g. plug connectors and transfer speeds.
Euro AV socket: Interface for connecting video devices to a TV set. This
socket is also referred to as Scart socket.
F
FLOF: Full Level One Facilities. Teletext system in which designations and
numbers of the jump destinations are transmitted separately for every
page on the bottom line. This guides the reader to related topics for
example. An information about which pages exist and which pages have
sub-pages is not available in FLOF.
G
Gateway: Transfer into another network; in this case connection from
home network to internet.
The network device is usually used as the standard gateway which
produces this connection. The DSL router generally also represents the
internet gateway.
H
HDCP: High-bandwidth Digital Content Protection. Coding system
provided for the interfaces DVI and HDMI for protected transmission of
audio and video data.
HDMI: High Definition Multimedia Interface is a newly developed interface
for full digital transmission of audio and video data.
HDTV: High Definition Television is an umbrella term that covers a number
of high resolution television standards.
HD-Ready: A quality seal that is awarded to products which are capable
of displaying high-definition television (HDTV).
High band and Low band: Transmission ranges for satellites.
Host: Computer that the server services are provided from, i.e. that makes
data available. Refer also to media server.
I
ID3 tags: Additional information for MP3 and WMA audio files. Informa-
tion about the singer, title, album and album cover can be saved here
among other things. These data are edited on the PC by an ID3 tag editor.
IP address: IP addresses (Internet Protocol Addresses) are used to identify
devices in an Internet Protocol (IP) network. IP addresses are made up of
four groups of numbers of three digits each.
Glossary
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