GLOSSARY

A | B | C | D | E | F | G | | H | I | J | K | L | M | N
O | P | Q | R | S | T | U | V | W | X | Y | Z


A
APID: Audio Packed Identification. Since a transponder carries more than one channel, each channel has to be identified. Pro7 audio for example has APID 256. Sat1 on the same transponder has APID 1792. By swapping their APIDs you could watch Pro7 video with Sat1 audio.
D
DHCP: Dynamic Host Client Protocol. Method to automatically assign IP addresses to different devices within a LAN
DVB: Digital Video Broadcast
E
EPG: Electronic Program Guide
F
FEC: Forward Error Correction. A method to reduce error rates in digital data streams.
H
HDD: Hard Disc Drive, external storage device.
L
LAN: Local Area Network
Letter Box: Scaling of some TV formats like 16:9 or movie formats like Cinemascope 21:9 to the width of a normal 4.3 TV screen.
M
Mosaic: Display of multiple Program windows on screen.
N
NIT: Network Information Table. Service information on provider and parameters used within the DVB data stream.
O
OSD: On Screen Display.
OTA: Over The Air, via satellite.
P
Pan&Scan: Method to display a part of a widescreen picture on a 4:3 TV screen. Reduces the viewable part of the original movie significantly.
PCR = PCR PID: addresses the synchronisation signal. Important for broadcasts with multiple audio and video signals. Mostly identical with VPID.
PID: Packet Identifier, part of the dynamic multiplex method with digital video broadcasting.
PPV: Pay Per View
R
RCU: Remote Control Unit
RGB: Red – Green – Blue. Method of colour transmission. The primary colours red, green and blue are transmitted on a dedicated channel each.
S
STB: Set Top Box. Receiving device independent from the TV set.
V
Video Freeze: Freezing of video picture, still.
VPID: Video Packed Identification. Since a transponder carries more than one channel, each channel has to be identified. Pro7 video for example has VPID 123. Sat1 on the same transponder has VPID 789. By swapping their VPIDs you could watch Pro7 audio with Sat1 video.
Y
YPbPr: Colour coding method. Component Video consists of the brightness signal “Y” as well as of the colour deviation signals “Pb” for deviation from gray on a blue-yellow scale and “Pr” for deviation from gray on a red-turquoise scale. The synchronisation signal does not require a separate cable but is contained in the brightness signal “Y”