Harmonic ProView 7000 - Page 205

Glossary
Numerics  A B C  D E F G H I J L M N O P 
Q R S T U V W Y 
© 2011 Harmonic Inc. 205 ProView 7000 v.2.4, Rev. A
DVB-S2
Digital Video Broadcasting - Satellite - second generation.
E
ECM
Entitlement Control Message. An ECM is a message generated by the conditional access system
(
CAS ). The ECM contains an encrypted version of the control word that only authorized
subscribers can decrypt. See also
EMM .
ECM Stream
The data flow between ECMG and a multiplex involved in the generation of a specific ECM .
ECMG
ECM Generator. A CAS application that produces the ECM 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
PES packets with a single PID within the eventual TS.
embedded controller
A processing unit located within each component that is responsible for the control of that
component.
EMM
Entitlement Management Message. An EMM is a message generated by the conditional access
system (
CAS ). The EMM authorizes an individual subscriber or group of subscribers to
descramble a program. The EMM is used with the ECM. See also
ECM .