Imagine communications Selenio BNP 2xr, User Manual

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Selenio TM BNP User Guide, Release 3.7.1 270
Glossary
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D
DCCT Direct Channel Change Table, part of 9 tables in the ATCS PSIP. The DCCT instructs the
receiver to change channels based on viewer preferences, demographics or
geographical location. This table works with a DCCSDT in the set top box.
DCCSDT DCC Selected Code Change Table, part of 9 tables in the ATCS PSIP.
DES Data Encryption Standard. DES specifies a FIPS approved cryptographic algorithm as
required by FIPS 140-1. Encrypting data converts it to an unintelligible form called
cipher. The cryptographic security of the data depends on the security provided for the
key used to encipher and decipher the data. Data can be recovered from cipher only by
using exactly the same key used to encipher it.
DET Data Event Table, part of 9 tables in the ATCS PSIP. The DET announces the data portion
of a video/audio/data event when the data event does not match the exact duration of
an video/audio event.
DHCP Dynamic Host Configuration Protocol. DHCP servers let individual computers on an IP
network extract their configurations. DHCP servers have no specific information about
the individual computers until they request the information.
DOCSIS Data Over Cable Service Interface Specifications. Now known as CableLabs Certified
Cable Modems. DOCSIS specifies modulation schemes and the protocol for
exchanging bidirectional signals over cable.
DPI Digital Program Insertion. The digital splicing of one MPEG program (typically a
commercial) into another based on digital cues within the MPEG transport stream.
DVB Digital Video Broadcast. A European set of defined transmission standards for digital
broadcasting systems.
DWDM Dense Wavelength Division Multiplexing. A fiber-optic transmission technique using
light wavelengths to transmit data parallel-by-bit or serial-by-character.
E
EAS Emergency Alert System. An operational structure for national and local emergency
alerts used by broadcast, cable, and wireless cable.
EBIF Enhanced Binary Interchange Format. EBIF standard provides a solution for the delivery
of interactive data to existing set-top boxes (STBs), including older models of STBs. EBIF
condenses interactive applications in order to use the minimal STB resources available
for interactive data delivery
ECM Entitlement Control Messages.
ECMG ECM Generator.
EISS ETV Integrated Signaling Stream data ES — carries timing signals that trigger events
associated with the user-agent application loaded onto the STB.
EIT Event Information Table, part of 9 tables in the ATCS PSIP. EITs are associated with a
specific virtual channel in the VCT , contain event information, and point to the location
of extended text in the ETT . Each EIT PID contains 3 hours worth of events per program.
EM Element Manager. The graphical user interface for the BNP.
EMM Entitlement Management Message. A packet containing the information necessary to
decrypt the picture.
EMMG Entitlement Management Message Generator. The component of the conditional
access headend that delivers entitlements to the multiplexers.