Dreambox DM 7000-S Instruction Manual page 60

20. Glossary of terms
CF
Compact Flash. Standard for a storage medium (memory card) with Flash
memory which retains information even without power. CF is a scaled-down,
minimally altered version of PCMCIA memory cards with the ATA interface.
This makes it possible to operate them over a simple PCMCIA adapter
without controller logic. The cards come in three variants (I, II and III),
according to their thickness. However, most devices prefer type I.
DAB
Digital Audio Broadcasting. The system offers additional capacity for data
transmission, Data compression is by MPEG-2.
Data reduction
Compression of picture and sound signals. Redundant information is omitted.
Digital
The signal transmission method of the future. Signals are transformed into
binary code (0´s and 1´s) and broadcast in this form. See, by contrast, Analog.
The latest digital satellite receivers implement the future in this way.
DiSEqC
Digital Satellite Equipment Control (pronounced: die-sec). Developed by
Philips for Eutelsat. Anyone who wants to receive analog and digital
programs from Astra, Eutelsat, and potentially other satellites cannot avoid
DiSEqC. The set-top box delivers control signals in digital form with which
multiple antennae can be selected. In contrast to previous analog control
signals (14 / 18 volt and 22 kHz), the DiSEqC system provides a much larger
number of switching possibilities for control and monitoring of the equipment
components of a receiving set-up. DiSEqC is a trademark of the European
Satellite Organization (EUTELSAT).
Dolby Digital 5.1
Dolby Digital is a sound transmission system which makes it possible to
reproduce digital surround sound on a home cinema system.
Downlink
The transmission segment from the satellite to the receiving antenna on the
ground is described as the downlink. Television boradcasters often use
satellite transmission from the filming location to the broadcasting station.
The advantage: It is the quickest way to transport large data volumes over
long distances.
DTS
Digital Theatre System, sound system
60
20. Glossary of terms