TANDBERG TT1260 Reference Manual page 109

TOT
Transport Stream
Transport Stream
Packet Header
TS
TSDT
TSP
U
UART
Upconvert
Uplink
UPS
UTC
VITC
VITS
VPS
WSS
WST
XILINX
XLR
Y (Luminance)
Y/C
YUV
Reference Guide: TT1260 Contribution Receiver
ST.RE.E10100.3
Time Offset Table: This optional SI table supports the use of local offsets as well as the UTC
time/date combination.
The purpose of the table is to list by country the current offset from UTC and the next
expected change to that offset (to track when daylight saving occurs).
The offset resolution is to within 1 minute over a range of ±12 hours from UTC.
A set of packetised elementary data streams and SI streams, which may comprise more than
one programme, but with common synchronisation and error protection. The data structure is
defined in ISO/IEC 13818-1 [1] and is the basis of the ETSI Digital Video Broadcasting
standards.
A data structure used to convey information about the transport stream payload.
Transport Stream.
Transport Stream Descriptor Table: A component of the MPEG-2 PSI data. This table
describes which type of Transport stream it is in (i.e. DVB, ATSC etc.). It may also contain
other descriptors.
Transport Stream Processor.
44.45 mm (rack height standard).
Universal Asynchronous Receiver Transmitter: A device providing a serial interface for
transmitting and receiving data.
The process by which the frequency of a broadcast transport stream is shifted to a higher
frequency range.
The part of the communications satellite circuit that extends from the Earth to the satellite.
Uninterruptable Power Supply: A method of supplying backup power when the electrical
power fails or drops to an unacceptable voltage level. Small UPS systems provide battery
power for a few minutes; enough to power down the computer in an orderly manner. This is
particularly important where write back cache is used.
Write back cache is where modified data intended for the disk is temporarily stored in RAM
and can be lost in the event of a power failure. Sophisticated systems are tied to electrical
generators that can provide power for days. UPS systems typically provide surge suppression
and may provide voltage regulation.
Universal Time Co-ordinate: An internationally agreed basis for timekeeping introduced in
1972 and based on international atomic time (corresponds to Greenwich Mean Time or GMT).
Vertical Interval Time Code.
Vertical Interval Test Signal: See: ITS.
Video Programming System: A German precursor to PDC
Wide Screen Switching: Data used in wide-screen analogue services, which enables a
receiver to select the appropriate picture display mode.
World System Teletext: System B Teletext. Used in 625 line / 50 Hz television systems (ITU-
R 653).
A type of programmable Integrated Circuit.
Audio connector featuring three leads, two for signal and one for GND.
Defines the brightness of a particular point on a TV line. The only signal required for black and
white pictures.
Broadcast video with separate colour, Y (luminance) and C (Chroma) (sometimes called S-
Video).
Y: Luminance component (Brightness), U and V: Chrominance (Colour difference)
Glossary
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