Edje-2000
Real Time MPEG 2 Streaming Encoder
Version 1.3
Adtec Digital, Inc. USA
Page 46 of 46
System Target Decoder -
A hypothetical reference model of the decoding process defined by MPEG-2.
(STD)
Table -
Service Information is transmitted in the form of tables, which are further divided into
subtables, then into sections, before being transmitted. Several types of tables
are specified by MPEG, DVB and ATSC. Refer to the Pocket Guide for more
information on the different types of Service Information tables and their
functions.
TDT -
Time and Date Table. This mandatory DVB SI table supplies the time reference expressed
in terms of UTC time/date. This enables joint management of the events
corresponding to the services accessible from a single reception point. The PID
for this table is 0x0014.
Time-stamp -
An indication of the time at which a specific action must occur in order to ensure proper
decoding and presentation.
TOT -
Time Offset Table. This optional DVB SI table supplies the UTC time and date and shows
the difference between UTC time and the local time for various geographical
regions. The PID for this table is 0x0014.
Transponder -
Trans(mitter) and (res)ponder. This refers to the equipment inside a satellite that receives
and re-sends information.
Transport Packet -
188-byte packet of information in a transport stream. Each packet contains a header and a
payload.
Transport Stream -
A stream of 188-byte transport packets that contains audio, video and data belonging to
one or several programs.
T-STD -
See System Target Decoder.
TV -
Television.
TVCT -
Terrestrial Virtual Channel Table. This ATSC table describes a s4t of one or more
channels or services using a number or name within a terrestrial broadcast.
Information in the table includes major and minor numbers, short channel name,
and information for navigation and tuning. This table is located on PID=0x1FFB.
Uplink -
Communication link from earth to a satellite.
UTC -
Universal Time, Co-ordinated.
VTC -
Virtual Channel Table. This ATSC table describes a set of one or more channels o
services. In formation in the table includes major and minor numbers, short
channel name, and information for navigation and tuning. There are two types of
VTCs, the TVCT for terrestrial systems and the CVCT for cable systems.
VLC -
Variable Length Coding. This refers to a data compression method (Huffman).
VoD -
Video on Demand.
VSB -
Vestigial Sideband Modulation. This is the terrestrial modulation method used in the ATSC.
It can have either 8 (8VSB) or 16 (16 VSB) discrete amplitude levels.
