
Glossary
© 2013 Harmonic Inc.
378
Ellipse 3000 r.3.0, Rev. B
DVB-ASI
DVB Asynchronous Serial Interface. A 270 Mbps serial interface to carry MPEG-2 Transport
Stream.
DVB-CI
Digital Video Broadcasting – Common Interface
DVB-S
Digital Video Broadcasting - Satellite.
DVB-S2
Digital Video Broadcasting - Satellite - second generation.
E
ECM
Entitlement Control Message. An ECM is a message generated by the conditional access
system (
). The ECM contains an encrypted version of the control word that only
authorized subscribers can decrypt.
.
ECM Stream
The data flow between ECMG and a multiplexer involved in the generation of a specific
.
ECMG
ECM Generator. A
application that produces the
messages.
EDH
Error Detection and Handling
EIA
Electronic Industries Alliance. A U.S. trade organization that was once responsible for
establishing hardware interface standards. The EIA broke apart into several more specialized
standards development organizations (SDOs) including the CEA and TIA. This break-up
resulted in the renaming of a number of key standards (such as CEA-708 and TIA-232) which
has caused industry confusion. Harmonic is careful to use the current and correct names of
relevant standards.
EIT
Event Information Table. This table provides information in chronological order for the events
contained within each service.
elementary stream
The basic raw output of either video or audio compression, not intended for physical
manifestation beyond the creating device. Each elementary stream will be carried in a
sequence of
packets with a single PID within the eventual TS.