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HD9084 HDTV Caption Encoder Manual
Page 7-4 GLOSSARY
DST (DAYLIGHT SAVING TIME): The civil time observed when daylight saving time is adopted in a
country or region. It is usually standard time + 1 hour. (see also Standard Time )
DTVCC: Digital Television Closed Captioning, defined in CEA-708.
EBU (European Broadcasting Union): An organization of European broadcasters that among
other activities provides technical recommendations for the 625/50 line television
systems.
EBU TECH 3267-E: The EBU recommendation for the parallel interface of 625 line digital video
signal. This is a revision of the earlier EBU Tech 3246-E standard that was in turn
derived from ITU-R601.
EDH: Error Detection and Handling (EDH) is defined in SMPTE RP-165 as a method of
determining when bit errors have occurred along the digital video path. Check words
and flags are combined into a special error detection data packet that is included as
ancillary data in the serial digital signal.
EMBEDDED AUDIO: Digital audio is multiplexed onto a serial digital video data stream.
EXTENDED DATA SERVICES (XDS): XDS is a third data service in field 2 that is intended to
supply program related and other information to the viewer. This information may
include such items as program title, length of show, type of show and program content
codes such as V-Chip program ratings.
ITU: The United Nations regulatory body governing all forms of communications. ITU-R
(previously CCIR) regulates the radio frequency spectrum, while ITU-T (previously
CCITT) deals with the telecommunications standards.
ITU-R601: (This document previously known as CCIR-601). An international standard for
component digital television from which was derived SMPTE 125M and EBU 3246-E
standards. ITU-R601 defines the sampling systems, matrix values and filter
characteristics for both Y, B-Y, R-Y and RGB component digital television signals.
ITU-R656 (This document previously known as CCIR-656). The physical parallel and serial
interconnect scheme for ITU-R601. ITU-R656 defines the parallel connector pinouts
as well as the blanking, sync and multiplexing schemes used in both parallel and serial
interfaces. It reflects definitions found in EBU Tech 3267 (for 625 line systems) and
SMPTE 125M (parallel 525 line systems) and SMPTE 259M-C (serial 525 line
systems).
JULIAN DATE: The Julian day number is a count of days elapsed since Greenwich mean noon on
January 1, 4713B.C. January 1st, 1993 was JD 2448989; January 1st, 2000 was JD
2451545.
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