Operation Manual

APPENDIX
Appendix
Glossary
AC-3
Dolby Digital Surround Sound System. A digitally compressed audio format characterized by its
ability to offer as many as six separate digital audio channels. AC-3 is used for DVD-Video titles in
the NTSC format. PAL titles use MPEG-2 audio.
ATSC
“Advanced Television Standard Committee” It’s established by the FCC to define new standards for
publicly regulated broadcast television in the U.S.
Bandwidth
The frequency range allocated to any communication circuit.
COFDM
Coded Orthogonal Frequency Division Multiplexing : It’s the modulation scheme selected by the
DVB committee for digital terrestrial broadcast television. See modulation.
Digital
Describes a system or device in which information is transferred by electrical “on-off”, high-low”,
or “1/0” pulses instead of continuously varying signals or states as in an analog message.
FCC
The Federal Communications Commission, the regulatory board which sets standards for
communications within the United States.
MPEG
Motion Picture Expert Group. A system for compression of digital data.
DVB
Digital Video Broadcast. International Standard for digital TV broadcasting.
EPG
Electronic Programming Guide.
NTSC
“National Television Systems Committee”. A committee of the Electronic Industries Association
that prepared the standards for commercial television broadcasting in the United States, Canada,
Korea, Japan and parts of Central and South America. NTSC format has 525 scan lines (rows) of
resolution at thirty frames per second (30Hz)
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