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Edje-2000
Real Time MPEG 2 Streaming Encoder
Version 1.3
Adtec Digital, Inc. USA
Page 41 of 41
Appendix B
Glossary
AC-3 -
Audio compression standard adopted by ATSC and owned by Dolby.
ADC -
Analog to Digital Converter.
ASCII -
American Standard Code for information Interchange.
ASI -
Asynchronous Serial Interface. A standard DVB interface for a transport stream.
ATM -
Asynchronous Transfer Mode.
ATSC -
Advanced Television Systems Committee. Digital broadcasting standard developed in
North America.
ATV -
Advanced television. North American standard for digital Broadcasting.
BAT -
Bouquet Association Table. This DVB table describes a set of services grouped together
by a broadcaster and sold as a single entity. It is always found on PID 0x0011.
BER -
Bit Error Rate.
B-frames -
Bi-directional predicted pictures, o pictures created from referenced to past and future
pictures.
Bitrate -
The rate at which a bit stream arrives at the input of a decoder.
Block -
A set of 8x8 pixels used during Discrete Cosine Transformation (DCT).
Bouquet -
A set of services sold as a single entity.
Broadcaster -
Someone who provides a sequence of scheduled events or programs to the viewer.
CA -
Conditional Access. This system allows service providers to control subscriber access to
programs and services via encryption.
CAT -
Conditional Access Table. This table identifies EMM streams with a unique PID value. The
CAT is always found on PID 0x0001.
CATV -
Community Access Television, otherwise known as Cable TV.
Channel -
A digital medium that stores or transports an MPEG-2 transport stream.
COFDM -
Coded Orthogonal Frequency-Division Modulation.
Compression -
Reduction of the number of bits needed to represent an item of data.
Conditional Access -
A system used to control viewer access to programming based on subscription.
CRC -
Cyclic Redundancy Check. This 32-bit field is used to verify the correctness of able data
before decoding.
CVCT -
Cable Virtual Channel Table. This ATSC table describes a set of one or more channels
using a number or name within a cable network. Information in the table includes
major and minor numbers, carrier frequency, short channel name, and
information for navigation and tuning. This table is located on PID=0x01FFB.
D/A -
Digital to Analog Converter.
DAVIC -
Digital Audio Visual Council.
DBS -
Direct Broadcasting Satellite or system.
DCT -
Discrete Cosine Transform. Temporal-to-frequency transform used during spatial encoding
of MPEG video.