Glossary

Definitions of DTV, HDTV & 3DTV Terms

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Term Definition

EAS Emergency Alert System. This is designed to provide the President with a means to address the American people in the event of a national emergency.
EDTV Enhanced Definition TV. A better digital television transmission than SDTV with at least 480p (progressive), in a 16:9 or 4:3 display and Dolby digital surround sound. The quality of most progressive scan DVDs and players is 480p.
Emergency Video Description Video descriptions are a way to inform people who are blind or have other vision disabilities of what is happening on the television screen. Video description is the insertion of verbal descriptions about the setting and/or action in a program when information about these visual elements is not contained in the audio portion of the program. These descriptions supplement the regular audio track of the program.
EPG Electronic Program Guide. An interactive list of upcoming TV programming that can be transmitted along with a DTV program.