Thompson ViBE EM4000, User Manual

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Glossary
238 ViBE EM4000 — Release 1.10
User Manual — 46073586AB02
ETSI EN 300 775 The European Telecommunications Standards Institute (ETSI)
specification for the Carriage of Vertical Blanking Information Data in DVB
bitstreams. VBI data is carried in MPEG-2 packetized elementary stream
(PES) packets as private stream 1, which in turn is carried in MPEG2
transport packets. The packet identifier (PID) of a VBI data stream
associated with a service is identified in the program map table (PMT) of
the program specific information (PSI) for that service. A VBI PES packet
contains data for only one video frame and always carries a PTS. A
Data_unit_ID identifies the type of data as EBU teletext non-subtitle data,
EBU teletext subtitle data, video program system (VPS), or widescreen
signaling (WSS). Data encoded in the data fields are supposed to be
transcoded into the VBI of 625-line video but may be interpreted directly
by a decoder.
ETT Extended Text Table
FCC Federal Communications Commission.
FEC Forward Error Correction.
A system of error control for data transmission, whereby the sender adds
systematically generated redundant data to its messages. The carefully
designed redundancy allows the receiver to detect and correct a limited
number of errors occurring anywhere in the message without the need to
ask the sender for additional data. FEC enables the receiver to correct
errors without the need for a reverse channel to request retransmission of
data, but this advantage is at the cost of a fixed higher forward channel
bandwidth
Field For an interlaced video signal, a "field" is the assembly of alternate lines of
a frame. Therefore, an interlaced frame is composed of two fields, a top
field and a bottom field.
Fps Frame Per Second.
FTP File Transfer Protocol.
A standard network protocol used to copy a file from one host to another
over a TCP-based network.
Frame A frame contains lines of spatial information of a video signal. For
progressive video, these lines contain samples starting from one time
instant and continuing through successive lines to the bottom of the
frame. For interlaced video a frame consists of two fields, a top field and a
bottom field. One of these fields will commence one field later than the
other.
GOP Group of Pictures.
In MPEG video, a GOP represents one or more I pictures, followed by P and
B pictures.
GPI General Purpose Interface
GUI Graphical User Interface
A type of user interface that allows users to interact with electronic devices
with images rather than text commands. A GUI represents the information
and actions available to a user through graphical icons and visual
indicators such as secondary notation, as opposed to text-based
interfaces, typed command labels or text navigation.
H.264 ITU/ETSI name for MPEG-4 Part-10 (ISO/IEC 14496-10).