Edje-2000
Real Time MPEG 2 Streaming Encoder
Version 1.3
Adtec Digital, Inc. USA
Page 43 of 43
ETSI -
European Telecommunication Standard Institute.
ETT -
Extended Text Table. This table is part of the ATSC PSIP. It carries relatively long text
messages for additional descriptions of events and channels. There are two
types of ETTs, the Channel ETT, which describes a channel, and the Event ETT,
which describes individual events in a channel. The PID for this table is identified
in the MGT.
Event -
A collection of elementary stream\ms with a common time base and an associated start
time and end time. An event is equivalent to the common industry usage of
“television program”.
FEC -
Forward Error Correction. This method adds error control bits before RF modulation. With
these bits, errors in the transport stream may be detected and corrected prior to
decoding.
Frame -
Lines of spatial information for a video signal.
GOP -
See Group Of Pictures.
Group of Pictures -
A set of pictures usually 12-15 frames long used for temporal encoding of MPEG-2 video.
HDTV -
High Definition Television. HDTV’s resolution is approximately twice as high as that of
Standard Definition Television (SDTV) for both horizontal and vertical
dimensions. HDTV has an aspect ratio of 16x9 as compared to the 4x3 aspect
ratio of SDTV.
IEC -
International Electrotechnical Commission.
IEEE -
Institute of Electrical and Electronics Engineers.
I/F -
Interface.
I-frame -
Intra-coded frame, or a picture encoded without reference to any other picture. I-frames
provide a reference for Predicted and Bidirectionally predicted frames in a
compressed video stream.
IRD -
Integrated Receiver Decoder. This is a receiver with an MPEG-2 decoder, also known as a
set-top box.
ISO -
International Standardization Organization.
ITU -
International Telecommunications Union (UTI).
LVDS -
Low Voltage Differential Signal. An electrical specification used by some manufactures,
usually on a parallel interface. It is a balanced interface with a low signal voltage
swing (about 300mV).
Macroblock -
A group of 16x16 pixels used for motion estimation in temporal encoding of MPEG-2 video.
MFN -
Multiple Frequency Network (DVB-T).
MGT -
Master Guide Table. This table is part of the ATSC PSIP. It defines sizes, types, PIDs,
and version numbers for all of the relevant tables within the transport stream.
The PID value for this table is 0x1FFB.
MHEG -
Multimedia and Hypermedia Expert Group.
MIP -
Megaframe Initialization Packet. This packet is used by DVB-T to synchronize the
transmitters in a multi-frequency network.
MP@HL
-
Main Profile at High Level. MPEG-2 specifies different degrees of compression vs. quality.
Of these, Main Profile at High Level is the most commonly used for HDTV.
MP@ML
-
Main Profile at Main Level. MPEG-2 specifies different degrees of compression vs. quality.
Of these, Main Profile at Main Level is the most commonly used.
MPEG -
Moving Picture Experts Group, also called Motion Picture Experts Group.
