Dreambox DM 7000-S Instruction Manual page 65

20. Glossary of terms
Transponder
Satellite transponder/channel with defined frequency bandwidth. In analog
technology, one TV programme and a number of sound channels can be
transmitted per transponder. In digital technology (QPSK), the transmission
capacity is 6-10 TV programmes with sound channels.
UDMA
Ultra Direct Memory Access. A technology for DIE disk drives, which offers
twice the speed of the EIDE transmission mode.
USB
Universal Serial Bus. An open, public domain, plug-and-play capable serial
bus for connecting devices which operate at up to 12 Mbits/second, and also
for slower devices such as keyboard, mouse and monitor. Developed by Intel
with Microsoft, IBM, Compaq, DEC, NEC and Northern Telecom. It has only
one type of plug, allows connection of up to 127 devices, asynchronous and
isochronous (precisely times) data transfer, flexible data packets, and con-
nection while running (Hotplug).
Encryption systems
1. Seca: The encryption system developed by the company Societé
Européenne de Controle d'Acces (Seca) for Canal plus was first used in
France for the Canal numerique package.
2. Irdeto: Dutch producer of the encryption system of the same name for
digital Pay TV, currently used in Italy, Greece, and the Benelux countries as
well as in many other countries. Irdeto now belongs to the Mindport group.
3. Viaccess: The encryption developed by France Telecom, is used principally
for the French packages AB-Sat and TPS (both on Eutelsat 13 degrees east).
It is, however, also used by SRG for encryption of its digital SAT programme
range (restriction of the technical coverage for licensing reasons).
4. Cryptoworks: A CA system developed by Philips.
5. Nagra: With Seca (Canal+) the second digital coding method used in Spain.
The programme package Via Digital on Hispasat (30 degrees west) is coded
in Nagra, as are Pay TV programmes in the cable network of the Spanish
Telefonica.
6. Conax: since the reorganisation of the Pay TV providers in Scandinavia, the
general coding standard for the Scandinavian Telenor. The satellite receivers,
with Common Interface, are thus ready for the digitial age. Already, almost all
65
20. Glossary of terms